AU2008201059A1 - Activating pin - Google Patents

Description

18,Maj. 2005 21:15 NVB Intern, a/s +45 4582 1557 Nr.2182 S. 4/48 00 8-i- SField of the Invention 0, The invention concerns an activating pin for a valve connector for connecting to inflation valves, the connector comprising a housing to be connected to a pressure source, within the housing a coupling hole having a central axis and an inner o0 diameter approximately corresponding to the outer diameter of the inflation valve to q which the valve connector is to be connected, and a cylinder and means for CN conducting gaseous media between the cylinder and the pressure source, and where the activating pin is arranged to engage a central spring-force operated core pin of the inflation valve, is arranged to be situated within the housing in continuation of the coupling hole coaxially with the central axis thereof, and comprises a piston pawith-a-pistonwhich-piston is--tobe.positoned-inthe cylindemovably betweena first piston position and a second piston position.

Background Art It is well-known from PCT/DK96/00055 that an activating pin located within the coupling house can be designed as a piston equipped with a suitable seal and a piston rod that is slidable in the cylinder-shaped coupling house. The piston can be held in a longitudinal position against the cylinder valve without applying physical force so that the piston automatically slides, after the valve connector is placed on the inflation valve, by means of compressed air. This compressed air comes from the pressure source such that the piston, in the proximal position to the valve, (1) opens up the inner valve, opens the air passage to the valve and, tightens less than 100% against the cylinder wall while in the distal position from the valve.

Figure 14 in PCT/DK96/00055 shows a valve (360) which must be closed against the piston control. The disadvantage is that the above-mentioned two seals must be operational at a certain section of the sliding. This requires very accurate calibration of the cylinder wall and the piston movement. Furthermore, the piston has a precisely defined opening zone and can thus only adjust itself to a minor extent to the tolerances of the pump valve in question.

18-Maj. 2005 21:15 NVB Intern, a/s +45 4582 1557 Nr-2182 S. 5/48 00 S-2- Figures 8, 9, 10, 14, and 15 in PCT/DK96/00055 show various activating pins equipped with a center blind drilling or a center drilling, side drillings and a V-shaped S milling at the bottom which is perpendicular to the center axial drilling of the piston.

SThe effect of this is that more force than necessary has to be applied when pumping, especially at high air velocities.

Figure 9 in PCT/DK96/00055 shows an activating pin which has a center drilling and, side drillings and a V-shaped milling at the bottom. When the coupling is 00 Sconnected to e.g. a high pressure pump with a built-in check valve, the spring keeps N the valve of the activating pin in a closed position after uncoupling of a Schrader 1 10 valve. If a tire with a Sclaverand valve has to be pumped immediately afterwards, one has to apply a large force to slide the activating pin which opens the inner valve of the Sclaverand valve. Air will escape and consequently the pumping time will be substantially longer if the tire has already been partly pumped. This last-mentioned problem also exists in the embodiments shown in Figures 10 and 15 in PCT/DK96/00055.

Disclosure of the Invention The purpose of the present invention is to produce a reliable activating pin which is: inexpensive, has low aerodynamic drag making it comfortable to use for pumping purposes, and provides the shortest possible pumping time.

These tasks are solved by the invention mentioned in the characteristic part of claim 1. Specifically, the present invention provides an activation pin for a valve connector for connecting to inflation valves, the connector comprising a housing to be connected to a pressure source, within the housing a coupling hole having a central axis and an Inner diameter approximately corresponding to the outer diameter of the inflation valve to which the valve connector is to be connected, and 18.Maj. 2005 21:16 NVB Intern. a/s +45 4582 1557 Nr.2182 S. 6/48 00 0 -3a cylinder and means for conducting gaseous media between the cylinder and the Spressure source, and where the activation pin S- is arranged to engage a central spring-force operated core pin of the inflation valve, -4 n is arranged to be situated within the housing in continuation of the coupling hole 5 coaxially with the central axis thereof, and 00 comprises a piston part with a piston, which piston is to be positioned in the 0 cylinder movable between a first piston position and a second piston position, wherein the activation pin comprising a channel, said piston part comprises a first end and a second end, wherein the piston is located at said first end and said channel has an opening at said first end, a valve part being movable in the channel, drivable by difference in forces acting on surfaces of the valve part, between a first valve position and a second valve position, wherein said first valve position leaves said opening open, and said second valve position closes said opening, and the top of the piston part forming a valve seat for a seal face of the valve the valve means.

These tasks are solved by the invention mentioned in the characteristic part of claim 1, where the activating pin further comprises a valve part, the piston part comprises within it a channel, the cross-section of said channel is, at least one part of said piston part, flower-shaped, consisting of essentially identical sectors, wherein in each sector the distance between the center point of the channel cross-section and the outermost limiting surface of the channel is larger than the corresponding distance measured along the line separating the sector from and adjacent sector, and said valve part is positioned movably with respect to said piston part between a first valve position and a second valve position for enabling the conduction of NVB Intern. a/s +45 4582 1557 Nr.2182 S. 7/48 IB.Mai. 2005 21:16 -4gaseous and/or liquid media through said channel when said valve part Is In said first valve position, and inhibiting the conduction of gaseous and/or liquid media through said channel when said valve part is in said second valve position.

The channels are positioned in a mainly longitudinal direction in relation to the center axis of the housing and can be defined by at least one cross section which approximately can be defined by at least one curve. The curve is closed and can be defined by two unique modular parametrisation Fourier Series expansions, one for each co-ordinate function: f c, cos sin (px) 2 0 where 2 c,-Jf

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2 o dil cos(px) dx si(px) dx O0x xeR p>O,peN c, cos-weighted average values of f(x), dp sin-weighted average values off(x), p representing the order of trigonometrical fineness thereby resulting in a large flow cross section area. All kinds of dosed curves can be described with this formula, e.g. a C-curve. One characteristic of these curves is that when a line is drawn from the mathematical pole which lies in the section plane it will intersect the curve at least one time. A regular curve bounding a region which 18-Maj. 2005 21:16 NVB Intern. a/s +45 4582 1557 Nr.2182 S. 8/48 00 cIn )o is symmetric with reference to at least one line which lies in the section plane through the mathematical pole can be defined by a single Fourier Series expansion: +Zc,cos(px) where 2 f cos(px) dx O0x<2r, xe R pO,peN c, weighted average values off(x), p representing the order of trigonometrical fineness.

When a line is drawn from the mathematical pole it will always intersect the curve only one time. In order to minimize the aerodynamic friction the channels are positioned mainly parallel to the centerline of the activating pin.

When the curves are approximately defined by the following formula, the cross section area of the channels is optimized by a certain given cross section: e.g. a section which combines approximately laminar flow and which can guide a central piston valve rod. It is then also possible to obtain a contact area for a Schrader valve core. This means that a bridge is unnecessary. In the following description, curves defined by the formula have been given the name "flower-shaped" The formula is: 18-Maj. 2005 21:16 18.Ma 20Gb21:16 NVB Intern, a/s +45 4582 1557N.28 S. /4 Nr-21B2 S. 9/48 1(x) EC cos (Spx) where 2 cos(3px) dx P :O,PE N q= weighted average values of f(x), p representing the order of trigonometrical fineness and where this cross-section in polar co-ordinates approximately is represented by the following formula: +-r 0 a. sin (n P) 2 where ro 0, a 0.

mn z:0, m r=R 17 0, n e R 0 -5 2wr,

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18.Mai. 2005 21:17 NVB Intern. a/s +45 4582 1557 Nr.2182 S. 10/48 00 -7and where r the limit of the "petals" In the circular cross section of the activating O pin, 5 ro the radius of the circular cross section around the axis of the activating S' pin, 00 a the scale factor for the length of the "petals", Srmax ro +a m the parameter for definition of the "petal" width n the parameter for definition of the number of "petals" <p the angle which bounds the curve.

Pursuant to the invention, an activating pin ensures a large flow cross section which, by means of radial fins, also produces an approximately laminar flow which contributes to a reduced pressure drop during the flow. Similarly, the radial fins can control any centrally positioned valve without blocking the air passage.

In a first embodiment of the invention, the piston rod is equipped with two blind drillings parallel to the center axis that reaches the activating pin at both ends of the activating pin. The piston rod is also equipped with a concentric valve made of an elastic material, e.g. a valve rubber used on a Dunlop-Woods valve and squeezed onto the piston rod between e.g. its upper and lower part covering the radial drilling proximal to the pressure source. The radial drilling has an azimuth angle oc larger than or equal to 900 to the center axis of the piston, seen in the flow direction of the air at flow from the side of the pressure source. Furthermore, the distal radial drilling has an azimuth angle p larger than or equal to 900 to the distal center drilling of the piston, seen in the flow direction of the air at flow from the side of the pressure source. To ensure an interaction between the piston and the inner valve in a Schrader valve, the radius ro in the distal blind drilling is smaller than the radius ro of the proximal part of the center drilling. Due to evident arrangements in 18.Maj. 2005 21:17 NVB Intern. a/s +45 4582 1557 Nr.2182 S. 11/48 00 -8dimensioning the by-pass, the piston control is proximally equipped with longitudinal air ducts and/or having a bigger diameter. Moreover, the side of the piston is chamfered. If connected to e.g. a pump with a built-in check-valve, the connector needs to have an airing valve or a similar solution for providing the shortest pumping time. This results in a reliable activating pin because the pin valve works In independently of the piston control fit and tolerances of the pump valves in question.

SIt also results in a pin with low aerodynamic drag, which is comfortable for pumping C purposes and a pin which is inexpensive to produce.

00 A second embodiment is an improvement of the first embodiment shown in Fig 2,2A and 2B if the coupling is connected to e.g. a high-pressure pump with a builtin non-return valve. A spring force being produced by means of the combination of compressed air and the valve lever passing through the piston in an eccentric position ensures the lowest possible pumping time. The effect of the eccentric valve lever is that the air pressure in the space between the non-return valve of the pump and the activating pin becomes equal to the pressure of the surroundings as the valve lever opens the above-mentioned space if a Schrader valve is disconnected. It Is thus always possible to couple a Sdaverand valve without air escaping from the tire. Alteratively, an airing valve which is constantly shut could be established in the above-mentioned space when the connector is coupled to the valves or when the activating pin touches the core of the Schrader valve. This can take place if, for example, the airing is shaped as a narrow channel at the pressurized side of the activating pin relative to the distal end of it. In a special embodiment, it is proposed that the eccentric valve lever is integrated in the piston valve which makes the activating pin inexpensive to produce. The pin works independently of the piston control fit A third embodiment comprises a similar combination to the one described in the second embodiment, except here the pin has a center drilling. It is appropriate if the center drilling at each end expands gradually by a circular cross section and has an angle y or 5, respectively, with the center axis of the activating pin and each angle is larger than 0° and smaller than 20° (usually in the interval between 6" and 120). In an appropriate embodiment, the top of the piston of the activating pin forms a valve seat for the valve (304). This results in a large opening area created by a small 18-Maj. 2005 21:17 NVB Intern. a/s +45 4582 1557 Nr-2182 S. 12/48 00

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-9movement of the concentric valve lever. In a special embodiment, the concentric valve lever Is loose in the piston and a stop device is used to stop its movement.

The stop device is an integrated part of the piston valve and is resilient in relation to it. The piston valve rod has e.g. a "flower-shaped" cross section and the piston rod e.g. a circular cross section, resulting in channels (321). The activating pin is very V reliable and inexpensive to produce. The air flow in the valve connector is approximately laminar which ensures low aerodynamic drag so that it is comfortable c 1 when pumping even with (low pressure) pumps without an integrated non-return 00 01 valve. The improvement over the activating pin shown in figure 9 in cN 10 PCT/DK96/00055 is considerable regarding reduction in pumping force and 1 pumping time and Is as good as e.g. the valve connector of figures 5A, 5B, 6 and 7.

A fourth embodiment is an alternative to the third embodiment As the piston valve is rotating at an angle 0 in relation to the top of the piston, if activated by the eccentric valve lever, the rotation is limited with a stop device The cross section of the piston rod can have two main forms, according the specific formula each being "flowershaped" with different parameters, both resulting in an approximately laminar flow. In a special embodiment, the radius rg is smaller than the radius of the core of a Schrader valve while the air is flowing through the distals of the "flower shaped" cross section. The eccentric valve lever is similar to the loose type of Figure 5D, with the difference being that the top is rounded off. The characteristics of this model are almost in accordance with those of the third embodiment.

In a fifth embodiment of the invention, the activating pin is designed as a piston with a piston rod that is slidable in the cylinder-shaped coupling house. The activating pin has a center drilling with an axially slidable valve in the center drilling that is kept dosed by a spring where the center drilling of the activating pin has e.g.

a "flower-shaped" cross section figure 8B) and the piston valve rod has a circular one resulting in a reliable control and efficient air passage. The center drilling at each end expands gradually by a circular cross section. The walls of the gradual expansions form an angle p or cp, respectively, between 00 and 20° (usually in the interval between 6° and 120). The wall of the gradual expansion by the piston part of the center drilling forms a valve seat for the seal face of the valve. The seal face of the valve is pressed into the correct position by a spring, e.g. an elastic band. In a 18-Maj. 2005 21:18 NVB Intern. a/s +45 4582 1557 Nr-2182 S, 13/48 00 special embodiment, the sealing surface is a small area with an angle W, in relation E to the center axis, of approximately 900-1500 (incl.) as seen in the flow direction of the air at flow from the side of the pressure source. This enables improved sealing.

SIn a special embodiment, the valve is equipped with at least one fin or a similar device, which fits on the top of the edge of a Dunlop-Woods inner valve. It also fits Seither the top of the core of a Schrader valve, or the bridge of a Schrader valve without fitting the top of its core, as the activating pin does. In the last mentioned cI ,I embodiment, the fin is equipped with a device perpendicular to the fin. Furthermore, 00 the center drilling in the last-mentioned embodiment can also be designed In a way C j 10 that provides a favorable flow in the area around the fin of the piston part. If e.g.

combined with a pump with a built-in check-valve, the space between the connector and the check-valve need to have an airing or a similar solution. The activating pin is reliable, as it works independent of the piston rod fit and the tolerances of the pump valves. It is inexpensive to produce and it gives a low pump force, specifically with pumps without a check-valve. It works independent of piston control fit or pump valve tolerances.

In a sixth embodiment of the invention, the activating pin has a center axial drilling with a valve that is axially slidable in the drilling and is kept closed by means of a spring. The valve and the spring are made of one piece of deformable material. The axially slidable valve and the spring are partly formed by a conic section, with an apex angle and partly formed by an approximately cylindrical section with a mainly circular cross section. The spring is attached to the piston part of the activating pin by means of a securing device. This is expedient if the wall of the center drilling in the activating pin is gradually expanded and has an angle rl or v, respectively, in relation to the center axis of the activating pin. Each angle is larger than 0" and smaller than 200 (usually in the interval between 6° and 120). The wall of the gradual expansion of the center drilling thus forms a valve seat for the seal face of the valve. The valve is pulled to the tightening position by the spring. In a special embodiment of the invention, the piston part is equipped with at least one fin or a similar device which fits on top of the core of a Schrader valve.

In another embodiment of the activating pin, the slidable valve has two cones resting upon each other. This turns the air flow around the valve and in the grooves into an approximately laminar flow. The piston valve rod and the piston rod 18.Maj. 2005 21:18 NVB Intern. a/s +45 4582 1551 Nr.2182 S. 14/48 00 define e.g. a cylindrical channel, while the rest of the piston rod has a "flowershapedt' cross section. The embodiment of the flow ensures low aerodynamic drag -4so that it is comfortable when pumping even with low pressure pumps without an integrated non-return valve. In addition, the invention Is inexpensive. It works independently of piston control fit and pump valve tolerances. In a special embodiment, the sealing surface of the cones is a small area with an angle k in relation to the center axis of approximately 900-15O0 (incl.) with the center axis as c-i seen in the flow direction of the air at flow from the side of the pressure source. This 00) enables improved sealing. In the case of combining this embodiment with pumps with an built-in check-valve, the space between the connector and the check-valve needs to be equipped with airing or the like.

Instead of air, (mixes of) gasses and/or liquids of any kind can activate and flow through and around the embodiments of the activating pin. The invention can be used in all types of valve connectors, where at least a Schrader valve or any valve with a spring operated core can be coupled, irrespective of the method of coupling or the amount of coupling holes in the connector. Further, the Invention can be coupled to any pressure source irrespective of whether or not there Is a securing means in the valve connector. Any possible combination of the embodiments shown in the specification fall into the scope of the present invention. The various embodiments described above are provided by way of illustration and should not be constructed to limit the invention. Those skilled In the art will readily recognize various modifications and changes which may be made to the present invention without stictly following the exemplary embodiments and applications illustrated and descnibed herein, and without departing from the true spirit and scope of the present invention.

The present invention further provides activation pin for a valve connector, which activation pin is designed as a piston with a piston rod, moving in the coupling house of the valve connector where the activation pin has a central drilling and a piston valve kept closed by a spring force which is characterized by the fact that one or more channels are defined by the piston r-od andfor the piston valve rod in the assembled activation pin which channels are positioned in a mainly longitudinal direction in relation to the centre axis of the activation pin, of which the cross section 18-Maj. 2005 21:18 18.Mai 200521:18 NVB Intern. a/s +45 4582 1557 ~.12 S 54 Nr-2182 S. 15/48 00 -12approximately can be defined by at least one closed curve, which can be defined by two unique modular paramretzisation Fourier Series expansions, one for each coordinate function: 2 (cj Cos (PX) +isin (px) 00 where 2 f cos(px) dx dp- 2 0(f N sin('x) dX x !2z, x r= dpsin-woeightfed average values of f(x), p representing the order of trigonomnetrical fineness Brief Description of the Drawings In the following, the invention is described in details by means of the preferred embodiments of which the main construction elements are shown on the drawings.

The following is shown on the drawing: FRgure 1A shows an illustration of a channel's curve which is defined by two unique modular parametrisation Fourier Series expansion.

18,Maj. 2005 21:18 NVB Intern. a/s +45 4582 1557 Nr,2182 S. 16/48 00 00 CK1 -13- Figure 1B shows an Illustration of the mathematical model of the "flower-shaped" cross section.

Figure 2 shows a first embodiment of the activating pin shown in a distal position relative to the pressure source for a valve connector that can be squeezed onto valves.

Figure 2A broken line shows an enlargement of the piston valve according to Figure 2. The drawing shows the valve when it is open.

Figure 2B shows the embodiment of Figure 2 where the side drilling is positioned distally in the piston rod together with a center blind drilling.

Figure 3A shows an enlargement of a further development of the second embodiment of the activating pin where the valve in the activating pin is activated by the eccentric valve lever.

Figure 3B shows the activating pin according to Figure 3A where the valve in the activating pin is kept closed by air pressure.

Figure 3C shows section A-A of Figure 3A Figure 3D shows the top of the piston and valve of the activating pin according to Figure 3A (view X).

Figure 4 shows a third embodiment of the activating pin in a distal position relative to the pressure source for a valve connector that can be squeezed onto valves.

Figure 5A shows an enlargement of the activating pin according to Figure 4. The valve of the activating pin is activated by the eccentric valve lever.

Figure 5B shows the activating pin according to Figure 5A where the valve is shut by gas and/or liquldmix pressure.

18.Maj. 2005 21:19 NVB Intern. a/s +45 4582 1557 Nr.2182 S. 17/48 oO 00 -14- Figure 5C shows section B-B of Figure 5A (the piston is not shown).

0 Figure 50 shows a eccentric valve lever that is freely movable in the piston of the activating pin.

IFigure 6A shows the fourth embodiment of an activating pin similar to Figure with a rotatable piston valve which is activated by the concentric valve Slever.

00o O Figure 6B shows the activating pin according Figure 6A, where the piston valve is closed by gas and/or liquid mix pressure.

Figure 6C shows view Z of Figure 6A Figure 6D shows cross section C-C of Figure 6B.

Figure 7 shows a fifth embodiment of the Invention in a distal position relative to the pressure source for a valve connector that can be squeezed onto valves.

Figure 8A shows an enlargement of the invention according to Figure 7 where the valve in the activating pin is activated.

Figure 8B shows section D-D of figure 8A Figure 8C shows an enlargement of the invention according to Figure 7 where the valve in the activating pin is kept closed by the spring.

Figure 8D shows the embodiment according to Figure 8C, with a different sealing surface.

Figure 9 shows the sixth embodiment of the invention in a distal position relative to the pressure source for a valve connector that can be squeezed onto valves.

Figure 10A shows an enlargement of the embodiment of Figure 9 where the valve in the activating pin is in a closed position or activated position (broken lines).

Figure 10B shows the top of the activating pin according to Figure 10A with spring suspension and intake (view Y).

Figure 10C shows a section after the line E-E in Figure

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18-Maj. 2005 21:19 NVB Intern. a/s +45 4582 1557 Nr-2182 S. 18/48 00

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0"I 0, Figure 1 0D Figure 11A Figure 11B shows a section after the line F-F in Figure shows the embodiment according to Figure 10A, with a different sealing surface.

shows an enlargement of the sealing surface of the embodiment of Figure 11A.

Best Mode(s) for Carrying Out the Invention Figure 1A shows a cross section of e.g. a piston rod 801 with a channel 802. Its curve is defined by two unique modular parametrisation Fourier Series expansion.

Figure 1B shows a mathematical model of the 'flower-shaped" cross section that provides a suitable approximation. The general formula for this cross section is found above. In the model shown is: roP 0.

4 m 4 and n 6.

The change from a center drilling 303,410,533,653 to the circle section of expansions 312,313,411,412,538,539,658 can mathematically be expressed by ro ro x under retention of the other parameters.

Figure 2 shows the first embodiment with the piston 121 in its distal position relative to the pressure source for a valve connector that is squeezed onto valves. The piston 121 has a piston rod 122 and is equipped with a center blind drilling 123 which branches into at least one radial drilling 124. Both blind drillings 123, 128 have e.g. a "flower-shaped" cross section, of which the radius ro of blind drilling 123 is larger than radius ro of blind drilling 128. The proximal part of drilling 123 and the distal part of drilling 128 can be provided with gradual expansions (not shown), seen from the pressure source. Also shown is the piston ring 131.

18.Maj. 2005 21:19 NVB Intern. a/s +45 4582 1557 Nr.2182 S. 19/48 00 -16- Figure 2A shows the radial drilling 124 which has an azimuth angle of to the center axis 125 of the piston 121. The angle a~ is shown larger than 90. The radial drilling ,O .4124 leads to the underside of the valve 126. The valve 126 is shown in its open position by means of a broken line 126a. The valve 126 is fastened by being squeezed between e.g. the upper and lower part (not shown) of the piston rod.

Figure 2B shows the radial drilling 127 which is open at an angle p~ to the blind c1 drilling 128. The angle 13 is shown larger than 900. The radial drilling 127 leads to 00 e.g. a canter blind drilling 128 at a distal position on the piston rod 122.

'1 Figure 3A shows a further development of the activating pin shown in Figure 2. The axially movable piston valve 225 is shown in an activated position by operation of the eccentric valve lever 226 which is integrated in the piston valve 225. The piston valve rod 227 has a sealing surface 228 which is positioned at the end. This ensures that the piston valve 225 always opens up to make air flow possible. e.g. from the space between the non-return valve of a pump and the activating pin to the surroundings, when a Schrader valve is uncoupled. The piston rod 223 has a sealing 229 with a sealing surface 230. The piston valve 225 has a sealing 238 with sealing surface 239 and the top of the piston 222 has a sealing surface 240. The radius ro of drilling 248 is smaller than radius ro of drilling 224. The air flows through the center drilling 224, which has a "flower-shaped" section, and around the piston rod 227 which has a circular cross section resulting In channels 234 (section A-A) which formi the center drilling 224. A stop device 231 prevents the piston valve from being pulled out of the activating pin as It strokes against the piston rod 223. A radial drilling 247 is positioned distally. The center axis 237 of the activating pin is also shown. The piston valve can have a gradual expansion (not shown) proximal to the pressure source.

Figure 3B shows the activating pin according to Figure 3A where the piston valve 225 is kept shut by air pressure. The valve function is fulfilled by the sealing 236 in full accordance with Figure 2. The stop device 231 has a stop surface 232 and the piston rod 223 has a stop surface 233.

18.Maj. 2005 21:19 NVB Intern. a/s +45 4582 1557 Nr-2182 S. 20/48 oO 00 -17- Figure 3C shows section A-A of the piston valve 223, which has a "flower-shaped" section, and the piston valve rod 227 which has a circular cross section resulting in O air channel 234 in order to enable a suitable flow through the section with reliable guidance of the piston valve rod 227.

Figure 3D shows view X of the top of the activating pin where the piston valve rod 227 Is hung in the shackle 235. The figure also shows the eccentric valve lever 226 N which is integrated into the piston valve 225 and which is a section of a cylinder 00 surface. In an appropriate embodiment not shown the valve lever is made by means of at least two legs that can be arranged rotationally symmetric around the center s1 10 axis 237 of the activating pin. The embodiments described in Figure 3D are, of course, applicable in connection with the other embodiments. Channel 242 is located between the shackle 235, the piston valve 225.

Figure 4 shows the third embodiment of the activating pin with the piston 301 in its distal position relative to the pressure source In a coupling house of a valve connector that can be squeezed onto tire valves. The piston 301 has a piston rod 302 and a center drilling 303. The activating pin has a piston valve 304 and an eccentric valve lever 305. Also shown are the center axis 337. Piston ring 338.

Figure 5A shows an enlargement of the activating pin of Figure 4. The axially movable piston valve 304 is in activated position by the eccentric valve lever 305 and has a sealing 306 with a sealing surface 307. The piston 301 has a sealing surface 309. The air flows through the proximally gradual expansion 310 of the center drilling 303 which e.g has a "flower-shaped" section to the distally gradual expansion 311. The wall 312,313 forms an angle y or 5, respectively, with the center axis 337 of the center drilling 303. These angles are each larger than 0° and smaller than 200 and are usually in the interval between 6° and 12°. Both expansions 310,311 have an approximately circular section. Together, the "flower-shaped" cross-section of the piston valve rod 322 defines air channels 321 which e.g. four can be used in order to get an approximately laminar air flow. The stop 315 prevents the piston valve 304 from being pulled out of the activating pin in cases where the coupling is connected to a piston pump without a non-return valve. The stop 315 is resiliently mounted by means of the bar 316 in the bottom 317 of the piston valve H.Maj, 2005 21:20 NVB Intern. a/s +45 4582 1557 Nr.2182 S. 21/48 00 o -18rod 322. The cross section of this channel changes constantly over its length. The activating pin has distally at least one fin or a shackle 318 which is optimally shaped Sin terms of air flow. Channel 324 is defined by partly the inside and outside (see section B-B) of the piston rod 302, and partly by bar 316. Channel 325 is defined by piston rod 304, sealing 306 and the eccentric valve lever 305.

Figure 5B shows the activating pin according to Figure 5A where the piston valve 304 is kept shut by air pressure. The stop device 315 has a stop surface 319 and o 1 the stop surface 320 is a part of the piston rod 302.

Figure 5C shows a section B-B with the air channel 311 which has a suitable flow through the section area. Moreover, the stop device 315 and the fin 318 are shown.

Figure 5D shows the activating pin in an activated position with an eccentric valve lever 350 which is freely movable in the piston 301 of the activating pin and on which the piston valve 353 presses at the top 351. The stop device 352 ensures that the valve lever does not fall through the piston 301. In an appropriate embodiment not shown, the valve lever has at least two legs which can be positioned rotationally and symmetrically around the center axis 337 of the activating pin. The valve lever can also be designed as the valve lever 226 shown in Figure 3A Embodiments described in Figure 5D are, of course, also applicable in connection with the other embodiments.

Figure 6A shows a fourth embodiment of the activating pin, which is similar to the third embodiment, in a position where the piston valve 401 is opened by the activated eccentric valve lever 402. The piston valve 401 rotates over an angle 9 from the center axis 403 of the activating pin. The piston valve 401 rotates around an axis 404 which is perpendicular to the center axis 403. The rotation of the piston valve 401 is limited by the stop device 405. The piston valve 401 has a sealing 414 with a sealing surface 406, while the piston 407 has a sealing surface 408. The rest of the activating pin is similar to Figure 5A, except for the piston rod 420 and the eccentric valve lever 402 which has a rounded top 421 as shown in Fig. 5D. The channel 422 is defined by the piston valve 401, the sealing 414, the piston 407 and 18.Maj. 2005 21 :20 NVR Intern. a/s +45 4582 1557 Nr.2l82 S. 22/48 00 the eccentric valve lever 402. The channel 423 is defined by the piston 407 and the piston valve 401.

Figure 68 shows the activating pin similar to fig. 6A with the piston valve 401 shut The piston rod 409 has different parameters for the "flower-shaped' cross section of tn 5 the center drilling 418. Also here are two gradual expansions 410,419 and walls 0 411,412, respectively, with characteristics according to those of Figure 5A: angles Pi cI and xin relation to the center axis 403. The contact area 413 (see also Fig. 6B) of 00 C) the activating pin with a Schrader valve has a cone shape. No bridge is necessary, c-i as ro is smaller than the diameter of the core of a Schrader valve.

Figure 6C shows view Z of Fig. 6A with fin 415 and opening 416.

Figure 6D shows cross section C-C of Figure 6B with the "flower-shaped'r cross section of the piston rod 409 defining air channel 417. Also shown is a contact area 413 for engaging with the core of a Schrader valve.

Figure 7 shows a fifth embodiment with the piston 531 in its distal position relative to the pressure source in the coupling house of a valve connector that can be squeezed onto valves. The piston 531 has a piston rod 532 and is equipped with a center drilling 533.

Figure BA shows the activating pin In activated position where an axially slidable valve 534 has a seal face 535. The air flows through a proximal (to the pressure source) gradual expansion 536 of the center drilling 533 and through the latter to the distal gradual expansion 537. The wall 538,539 forms an angle p or respectively, to the wall 540 of the center drilling 533. These are larger than 00 and smaller than 2010 (usually in the interval between 60 and 1 20). Both expansions 536,537 have an approximately circular cross section distally from the connection to the. center drilling 533. Also shown are the center axis 543. Piston and the piston valve rod 544.

Figure 8B shows the section D-D from figure 8A where the channel 533 is defined by a t flower-shaped" cross section of the piston rod 532 and a circular cross section of the valve rod 544, Furthermore, a fin 542 is shown.

18-Maj. 2005 21:20 NVB Intern. a/s +45 4582 1557 Nr.2182 S. 23/48 00 C) Figure 8C shows the activating pin with a closed valve. The spring 541 secured In the piston 531 is an elastic band which presses the axially slidable valve 534 down so that the seal face 535 of the valve is pressed against the wall 538 of the expansion 536. The seal face 535 can have a similar sealing (not showed) with the wall 538 as showed in Figure 11 A, 11 B.

Figure 8D shows an Improved sealing surface arrangement: sealing 550 with surface 551 and piston rod 553 with sealing surface 552. Angle V is CI between 900-1 500 The channel 546 is defined by fth sealing surfaces 551 00) and 552, when these are seperated from each other.

Figure 9 shows a sixth embodiment with the piston 651 in its distal posItIon relative to the pressure source In a coupling house of a valve coninector that can be squeezed onto valves. The piston 651 has a piston rod 652 and is equipped with a center drilling 653.

Figure IDOA shows the activating pin in its closed position and its activated position (broken lines) where the axially slidable valve 654 has a seal face 655. The air flows through the expansion 656 of the center drilling 653 and through the latter to the distal gradual expansion 657 and the distal part of the piston rod with a "flower-shaped" cross section. The wall 658,659 forms an angle rl or v, respectively, to the wall 660 of the center drilling 653. These angles are each larger than 0QO and smaller than 200 (usually In the interval between &0 and 120). Both expansions 656,657 have ant approximately circular cross section. The valve 654 has a spring part 661 secured In a brace 662. Distally, the activating pin has at least one fin or brace 663. Furthermore, a cone 664 is shown.

Figure IlOB shows the top (view Y) of the activating pin shown in figure 1IOA with the three expansions 656 and braces 662. The braces serve as a securing device for the valve spring and the expansions 656 ensure a suitable flow cross section.

Figure 10C shows the section E-E in figure IDA resulting in a cylindrical air channel 653. A suitable flow cross section is also ensured here.

Figure 1IOD shows the section F-F in figure 10OA Internally, this section of the piston rod 652 Is "flower-shaped" to ensure a suitable flow cross section.

18.Maj. 2005 21:21 NVB Intern. a/s +45 4582 1557 Nr.2182 S. 24/48 00 oO -21- Furthermore, a fin designed as a brace 663 Is shown. Also shown is the channel S 666 between the brace 663 and the piston rod 652.

Figure 11A shows an activating pin similar to the one of Figure with 0 5 the sealing surface 704 of the cone 702 and the corresponding surface 703 for the 0 piston rod 701 having an angle equal to or larger than 90" and less than approximately 1500 with the center axis 665 seen in the direction of the flow of the o00 air at flow from the pressure source. Channel 705 is defined by the sealing surface O 703 and 704, when these are seperated from each other.

Throughout the specification, unless the context requires otherwise, the word "comprise" or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated integer or group of integers but not the exclusion of any other integer or group of integers.

Claims (31)

18.Maj. 2005 21:21 NVB Intern. a/s +45 4582 1557 Nr.2182 S. 25/48 00 oO -22- ,I The Claims Defining the Invention are as Follows 0 1. An activation pin for a valve connector for connecting to inflation valves, the N connector comprising a housing to be connected to a pressure source, within the housing S? a coupling hole having a central axis and an inner diameter approximately i corresponding to the outer diameter of the inflation valve to which the valve 00 oO connector is to be connected, and a cylinder and means for conducting gaseous media between the cylinder and the pressure source, and where the activation pin is arranged to engage a central spring-force operated core pin of the inflation valve, is arranged to be situated within the housing in continuation of the coupling hole coaxially with the central axis thereof, and comprises a piston part with a piston, which piston is to be positioned in the cylinder movable between a first piston position and a second piston position, wherein the activation pin comprising a channel, said piston part comprises a first end and a second end, wherein the piston is located at said first end and said channel has an opening at said first end, a valve part being movable in the channel, drivable by difference in forces acting on surfaces of the valve part, between a first valve position and a second valve position, wherein said first valve position leaves said opening open, and said second valve position closes said opening, and the top of the piston part forming a valve seat for a seal face of the valve the valve means. 2. An activation pin according to claim 1 in a valve connecter for connecting to Inflation valves, wherein the channel comprising a part being partly expanding in the direction towards the valve part, the angle of the expanding wall being 0-200, such as 6-12°, in relation to a central axis of the activation pin. 18.Maij 2005 21:21 NVB Intern. a/s +45 4582 1557 Nr.2182 S. 26/48 00 -23- c-I S3. An activation pin according to claim 1 or 2 in a valve connecter for connecting to inflation valves, wherein it comprises means for driving said valve part into said first valve position when the piston is in the first piston position. N Vt 4. An activation pin according to claim 1 in a valve connecter for connecting to S? Inflation valves, wherein said valve part is arranged to move in respect of said piston C part in the longitudinal direction of said piston part 00 0 I C- 10 5. An activation pin according to claim 1 in a valve connecter for connecting to inflation valves, wherein said valve part is arranged to rotate around a rotational axis mounted at said first end perpendicularly to the longitudinal axis of said piston part. 6. An activation pin according to claim 4 in a valve connecter for connecting to inflation valves, wherein it comprises stopping means to limit the movement of said valve part in the longitudinal direction of said piston part 7. An activation pin according to claim 5 in a valve connecter for connecting to inflation valves, wherein it comprises stopping means to limit the rotation of said valve part in the first valve position. 8. An activation pin according to claim 4 in a valve connecter for connecting to inflation valves, wherein said piston part comprises a first end and a second end, wherein the piston is located at said first end, said channel comprises a first channel portion and a second channel portion, both in the longitudinal direction of said piston part and connected to each other at a transition point, and said valve part comprises a valve rod arrangend to move within said first channel portion and having a free end; wherein said first valve position corresponds to said valve part being moved in the longitudinal direction of said piston part to a position where the free end of said valve rod leaves open the transition point between said first channel portion and said 18.Mai. 2005 21:21 NVB Intern. a/s +45 4582 1557 Nr,2182 S. 27/48 00 -24- 3 second channel portion, and said second valve position corresponds to said valve part being moved in the longitudinal direction of said piston part to a position where S the free end of said valve rod closes the transition point between said first channel portion and said second channel portion. In 9. An activation pin according to claim 8 in a valve connecter for connecting to inflation valves, wherein at least one end of said first channel portion and said 0-4 ,i second channel portion has a larger cross section area at Its other end than at its 00 0 next end to said transition point. S 10. An activation pin according to claim 4 in a valve connecter for connecting to inflation valves, wherein said piston part comprises a first end and a second end, wherein the piston is located at said first end, said channel comprises a drilling extending from said first end to said second end, the opening of said drilling at said first end being circular, and said valve part comprises a valve rod with a channel positioned in the longitudinal direction of said valve part, said valve rod arrangend to move within said drilling, and a cylindrical valve sealing at one end of said valve rod, the axis of said cylindrical valve sealing being In the longitudinal direction of said piston part, said drilling and said valve rod, and the outer diameter of said valve sealing being larger than the diameter of the circular opening of said drilling at said first end; wherein said first valve position corresponds to said valve part being moved in the longitudinal direction of said piston part to a position where said valve sealing leaves open the circular opening of said drilling at said first end, and said second valve position corresponds to said valve part being moved in the longitudinal direction of said piston part to a position where said valve part closes the circular opening of said drilling at said first end. 11. An activation pin according to claim 3 in a valve connecter for connecting to inflation valves, wherein said means is an integrated part of the valve part. 1B.Maj, 2005 21:22 NVB Intern. a/s +45 4582 1557 Nr.2182 S. 28/48 00 -\1 12. The use of an activation pin according to claim 1 in a valve connector for connecting to inflation valves. 13. Activation pin for a valve connector, which activation pin is designed as a piston (121,222,301,407,531,651) with a piston rod (122,223,302,409,420,532,652,701), moving in the coupling house of the valve connector where the activation pin has a central drilling (123,128,224,248,303,418,533,653) and a piston valve (126,225,304,353,401,534,654,702) kept closed by a spring force which Is characterized by the fact that one or more channels (123,128,224,234,303,321,417, 418,533,653,657) are defined by the piston rod (122,223,302,409,420,532,652,701) andlor the piston valve rod (227,322,544,661) in the assembled activation pin which channels (123,128,224,234,303,321,417,418, 533,653,657) are positioned in a mainly longitudinal direction in relation to the centre axis (125,237,337,403,543,665) of the activation pin, of which the cross section approximately can be defined by at least one closed curve, which can be defined by two unique modular parametrisation Fourier Series expansions, one for each co-ordinate function: I(x)-i+ccOs(Px)+Xdsin(px) 2 where 2 c-f cos(px)dA 2 d, f sin(px) d ;T Ox<27r, xeR p>O,peN cp cos-weighted average values off(x), dp sin-weighted average values of f(x), p representing the order of trigonometrical fineness 18-Maj. 2005 21:22 NVB Intern, a/s +45 4582 1557 18.ai 205 2:22 NVBintrn.a/s+45458 157 r2182 S. 29/48 00 00 -26- 14. Activation pin according to claim 13 characterized by the fact that the curves are approximately defined by at least one regular curve bounding a region which is symmetric with reference to at least one line which fie in the section plane through the mathematical pole and can be defined by a single Fourier Series expansion: f X 1C.0 Cos (PX) where 2 CP=-Jf cs(px) dx O--x -2x, xdP p !O,pE M cp weighted average values of fkx), p representing the order of trigonometrical fineness Activation pin according claims 13 or 14 characterized by the fact that the curves are approximately defined by the formula: f CX)- CO 1C, Cos (3pX) 2 P-0 where 18.Mai. 2005 21:22 NVB Intern. a/s +45 4582 1557 Nr-2182 S. 30/48 00 -27- 2 cj, JFsf cos(3px) dx g2r, x C 00 P !O,pEM c= weighted average values of f(x), p representing the order of tigonometrical fineness and where this cross section in polar co-ordinates is represented by the following formula: r =ro a sin(op) where ra 0, a 0, m 0, m rR, n n c-R 0 2Tr, and where r the limit of the "Petals" in the circular cross section of the activation pin, ro the radius of the circular cross section around the axis of the activation pin, a the scale factor for the length of the "petas, rmnx ro +a nnnr Ir ~n. I0.MaJ. ZUUo Z :ZZ NVB Intern. a/s +45 4582 1557 Nr.2182 S. 31/48 00 -28- m the parameter for definition of the "petal" width Sn the parameter for definition of the number of "petals" -4 0 16. Activation pin according to claims 13, 14 or 15 characterized by the fact that the channels (123,128,224,234,303,321,417,418,533,653,657) are positioned Iapproximately parallel with the centerline (125,237,337,403, 543,665) of the activation pin. '1 17. Activation pin according to any one of claims 13 to 16 characterized by the fact S 10 that the centre drilling (123,128) is designed as two blind drillings, parallel with the Scentre axis (125) which at both ends of the activation pin reach into the activation pin where it is connected by means of suitable radial drillings (124,127), that the proximal radial drilling (124) proximal to the pressure source has a azimuth angle (a) larger than or equal to 900 to the centre axis (125) of the piston (121) seen in the air flow direction at flow from the pressure source, and that the piston rod (122) is equipped with a concentric valve (126) of elastic material which is squeezed onto the piston rod (122) covering the side drilling (124). 18. Activation pin according to claim 17 characterized by the fact that the distal radial drilling (127) has an azimuth angle larger than or equal to 900 to the centre blind drilling (128) of the piston rod (122) seen in the flow direction of the air at flow from the pressure source.

19. Activation pin according to claim 18 characterized by the fact that the radius ro of the distal centre blind drilling (128) is smaller than ro of the proximal part of the centre drilling (123). Activation pin according to any one of claims 13 to 19 characterized by the fact that the spring force is procured by means of the combination of pressurized air and the valve lever (226,305,402), which passes through the piston (222,301,407) eccentrically. I 18-Maj. 2005 21:23 18.Mai 200521:23 NVB Intern. a/s 445 4582 1557 N.12 S 24 Nr.2182 S. 32/48 00 -29-

21. Activation pin according to claim 20 characterized by the fact that the piston valve (225,304) is axially movable.

22. Activation pin according to dlaim 20 characterized by the fact that the piston valve (225,304) is equipped with a stop device (231,315).

23. Activation pin according to any one of claims 13 to 22 characterized by the fact ci that the piston rod (223) is equipped with at least one radial drilling (244,247) and 00) with a concentric valve (236) of elastic material which is squeezed onto the piston Ni 10 rod (223) and which Is covering the radial drilling (244).

24. Activation pin according to claimn 23 characterized by the fact that the radial drilling (244) has an azimuth angle larger than or equal to 900 with the center axis (237) of the piston (223) seen in the flow direction of the air at flow from the pressure source. Activation pin according to any one of claims 13 to 24 where the radial drilling (247) is placed distally on the piston rod (223) which also has a central drilling (248) characterized by the fact that the radial drilling (247) has an azimuth angle (03) which is larger than or equal to 90' with the centre axis (237) of the piston rod (223) centre drilling (248) and where radial drilling (247) ends up in the centre drilling (248).

26. Activation pin according to claim 21 characterized by the fact that the piston valve rod (227) is hung up by means of a securing device (235).

27. Activation pin according to claim 20 characterized by t fact that the central drilling (303,418) at each end is gradually expanding to an approximately cirailar cross section (310,311,410,419).C

28. Activation pin according to claim 27 characterized by the fact that the expanding wall (312,313,411,412) has an angle or respectively, in relation to the central axis (337,403) of the activation pin which angles each are larger than 00 and smaller than 200. 18.Maj. 2005 21:23 18.Mai 200521:23 NVB Intern. a/s +45 4582 1557Nr12 S 3/4 Nr,2182 S. 33/48 00

29. Activation pin according to claim 28 characterized by the fact that the angle (y,p) or respectively, Is In the Interval between 60, and 120.

30. Activation pin according to claim 20 characterized by the fact that the top (240,309,408) of the piston (.112,3011,4107) of the activation pin at the central drilling (224,303) procures a valve seat for the sealing means (238,306,414) of the piston N- valve (225,304,401). 00

31. Activation pin according to claim 20 characterized by the fact that the bottom (228) of the piston valve rod (227) procures a valve seat for the sealing means (229) in the bottom of the central drilling (224).

32. Activation pin according to claim 20 characterized by the fact that the valve lever (350) is axially freely movable through the top surface (351) where the mobility is limited by the piston valve (353) and by the piston (301) through the stop device (352).

33. Activation pin according to any one of claims 13 to 32 characterized by the fact that the valve lever (226, 305) is equipped with at least two legs.

34. Activation pin according to claim 33 characterized by the fact that the legs of the valve lever (226,305) are organized rotationally symmetric around the central axis (237,337). Activation pin according to claim 34 characterized by the fact that the valve lever (226) is an integrated part of the piston valve (225) being a part of a cylinder surface.

36. Activation pin according to claim 20 characterized by the fact that the piston rod (302,420) is equipped with at least one fin (318). 18-Maj. 2005 21:23 18.Mai 200521:23 NVB Intern. a/s +45 4582 15517r28 S 44 Nr-2182 S. 34/48 00 -31

37. Activation pin according to claim 20 characterized by the fact that the piston valve (401) can rotate around an axis (404) which is perpendicular to the centre axis (403).

38. Activation pin according to claim 20 characterized by the fact that the rotation of the piston valve (401) is limited by a stop device (405). ci 39. Activation pin according to claim 20 characterized by the fact that the valve lever 00 (402) is axially freely movable where the mobility is limited by the piston valve (401) by through the top surface 351 and the piston (407) through the stop device (352). Activation pin according to claim 37 characterized by the fact that the radius ro of the central drilling (418) is smaller than the diameter of the core of a Schrader- valve contact area (413).

41. Activation pin according to any one of claims 13 to 40 characterized by the fact that the centre drilling (533) goes through the entire piston rod (532).

42. Activation pin pursuant to any one of claims 13 to 41 characterized by the fact that the piston valve rod (544,553) is controlled by the piston and that the valve spring device (541) consists of an elastic band.

43. Activation pin according to claim 42 characterized by the fact that the wall (538,539) of the centre drilling at each end of the piston rod (532,553) is gradually expanding to an approximately circular cross section at either end.

44. Activation pin according to claim 43 characterized by the fact that the wall (538539) of the gradual expansion (536,537) forms an angle p or p, respectively, with the centre axis (543) which is larger than 00 and smaller than 200. Activation pin according to claim 43 characterized by the fact that the angle p or q, respectively, is in the interval between 60 and 120. 18.Maj. 2005 21:23 NVB Intern, a/s +45 4582 1557 Nr.2182 S. 35/48 00 0 -32-

46. Activation pin according to claim 43 characterized by the fact that the wall (538) of the gradual expansion (536) by the piston part of the centre drilling (533) forms a valve seat for the seal face (535) of the piston valve (534). 4

47. Activation pin according to claim 41 characterized by the fact that the piston V valve (534) is equipped with at least one fin (542). 0-4 N 48. Activation pin according to claim 46 characterized by the fact that the sealing 00 Ssurface (551) of the sealing (550) forms an angle LP equal or larger than 90° and NC 10 equal or less than 1500 in relation to the centre axis (543) of the activation pin seen in the flow direction of the air at flow from the side of the pressure source.

49. Activation pin according to claim 41 characterized by the fact that the piston valve (654) and the spring (661) are made in one piece of a deformable material with a suitable modulus of elasticity. Activation pin according to claim 49 characterized by the fact that the slidable valve (654) and the spring (661) consist partly of a conic section with an apex angle (2E) and partly of an approximate cylindrical section with a mainly circular cross section and that the spring (661) is secured in the piston part (651) of the activation pin by means of a securing device (662).

51. Activation pin according to claim 50 characterized by the fact that the wall (658,659) of the centre drilling (653) in the activation pin is gradually expanding to an angle n or v, respectively, to the centre axis (665) of the activation pin.

52. Activation pin according to claim 51 characterized by the fact that the angle q or v, respectively, to the centre axis (665) of the activation pin are each larger than 00 and smaller than 200.

53. Activation pin according to claim 51 characterized by the fact that the angle n or v, respectively, is in the interval between 60 and 120. 18.Maj. 2005 21:24 NVB Intern. a/s +45 4582 1557 Nr.2182 S. 36/48 00 -33- S54. Activation pin according to claim 51 characterized by the fact that the wall (659) of the gradual expansion (657) of the centre drilling (653) forms a valve seat for the Sseal face (655) of the valve (654). 0-4

55. Activation pin according to claim 49 characterized by the fact that the conic n sFtrinn of the slidable valve (654) consists of two cone parts resting upon each other. 0 K 00

56. Activation pin according to claim 47 characterized by the fact that the fin (542) is 10 equipped with a device perpendicular to the fin.

57. Activation pin pursuant to claim 51 characterized by the fact that the sealing surface (704) of cone (702) forms an angle g equal or larger than 90° and less than approximately 150° in relation to the centre axis (665) of the activation pin seen in the flow direction of the air at flow from the pressure source.