WO2007039778A2

WO2007039778A2 - Vhs pistol

Info

Publication number: WO2007039778A2
Application number: PCT/HR2006/000031
Authority: WO
Inventors: Marko Vukovic
Original assignee: Marko Vukovic
Priority date: 2005-10-06
Filing date: 2006-10-05
Publication date: 2007-04-12
Also published as: WO2007039778A3; HRP20050883A2; HRPK20050883B3

Abstract

The reactive gasses in the VHS pistol unlock the breach (6) by rotating the barrel (1) around the turning point 'A', and it is again locked when the return spring (7) presses the rear end of the barrel to the firing position. This pistol has the same distance between the turning point 'A' and the head of the breach (6) , as well as the same shape and same dimensions of the cog on the barrel (1) and the groove in the breach, so barrels (1) of all lengths and calibres can be interchanged. The rear sight (10) and front sight (9) have a hole drilled along their length. On the handgrip (2) safety catches (5) and (5a) protrude from the handgrip (2).

Description

VHS PISTOL

DESCRIPTION OF THE INVENTION

1. TECHNICAL FIELD

This invention refers to a pistol that has, among other, a cocking indicator, safety catch, connecting barrel and breach so various lengths and calibres can be changed, and a according to the International Patent Classification (IPC) is classified as: F 41 C 3/00 pistols; revolvers.

2. TECHNICAL PROBLEM

Known pistols have cocking indicators assembled from several parts, which makes them more complicated, and thus more expensive to manufacture.

On known pistols, when the barrel is changed to obtain different length or calibre, several parts connected to it have to be changed as well, and users often decide to rather buy another pistol with the desired barrel length and calibre.

The known pistols have front and rear sights marked with visible spots in different colours, optical reflection threads or with tritium ampoules. This manner of marking the sights is relatively expensive and complex.

For moveable sights on the pistols used are assemblies with separate housing, that are fixed to the pistol by a bolt or swallow-tail notch, and moving of the sighting channel along the housing is achieved by a screw or a wheel.

The connections between the barrel and breach are axially and radially elastic. In each subsequent locking there is possibility that the barrel is locked in a different position, thus aiming to a different spot and missing the target although the marksman aimed the pistol properly.

The pistols that have a special elastic connection as additional part are more complex and more expensive to manufacture. For so constructed pistols special attention must be paid to method of placement of the return spring of the breach, regardless of is it placed on the barrel or bellow it. This increases the pistol's volume and also the weight.

With older types of safety catches the marksman, to fire a round, must consciously move the catch into another position, and if his life is endangered, the marksman cannot be sure did he put the safety catch on or off.

With more recent types of safety catches, the marksman sets the catch to off just by gripping the pistol but. However, this new system is more complicated than the previous one, since more parts are used, thus making the product more expensive.

The known pistols had a very complex and complicated safety catch and firing system. The practice has shown that some of the pistols even had unreliable safety catches that permitted firing of a round even when the safety feature was on.

3. STATE OF THE ART

Some of the worlds known pistols resolve some of the problems described in the section 2 above, but in a more complicated manner, thus significantly increasing the production costs or, because of inferior solutions applied, show lower target results. However, some of the problems like aiming through a hole on the rear and front sights, connection of barrel with the breach that permits changing the barrels of various lengths and calibres, are not solved by any pistol worldwide, which means that no pistol solves all the problems described in the section 2.

4. EXPLANATION OF THE NATURE OF THE INVENTION AND DESCRIPTION

The cocking indicator is solved in a new way, so the firing pin 13, Figure 1 when the pistol is cocked and caught in the firing position protrudes from the rear end of the pistol for approximately 3 mm, which is enough to be seen, or touched by finger, if in darkness.

Distance of turning point "A" Figure 1, from the breach head 6 is always the same for all different barrel lengths and calibres, as is the position of the cog on the barrel 1 at the rear end of the locking groove on the breach head 6 - they are of the same dimensions and shape for all calibres and barrel lengths.

On the rear sight 10 and front sight 9 Figure2, a hole is drilled along the whole length in the direction of aiming, that the aiming marksman notices better than the markings used on the rear and front sights of the known pistols.

The breach 6 has a groove where the parts of the sliding sights 10 are fitted, but without sight housing.

The Figure 3 shows the method of adjusting the sight 10, in vertical and horizontal direction. By turning the wheel 16, the screw moves the sight 10 in vertical direction. The wheel 17 and screw are used to adjust the sight 10 in the horizontal direction.

The spring 18 holds the sight 10, around the turning point "E" tensed, and the wheels 16 and 17, that are depressed by the bulge on the breach 6, and which together with the groves on the wheel 16 and 17 edges prevent self-adjustment.

When the pistol is closed as shown on the Figure 1, the head of the breach 6 fits to the mouth of the barrel 1, the cog on the barrel 1 is in the groove of the breach 6, locked and ready for firing. The firing action force holds the barrel 1 in the locked condition until the bullet leaves the barrel 1, when the powder gasses reaction again rotates the rear of the barrel 1 around the turning point "A" downwards, thus unlocking the barrel 1 and the breach 6. The breach 6 moves backwards, presses the return spring 7 and ejects the cartridge. The return spring 7 returns the breach 6 into the front position and loads the barrel 1 with a new round from the magazine.

Depending on the charge in the round, i.e. the bullet calibre, the bore for the turning point "A" on the barrel 1 is done in the form of a groove whose axis is parallel to the barrel 1. The groove is 0- 12 mm long, with a semicircle on both ends. This way we can optimally select the pistol recoil for the desired calibre.

When the breach head 6 hits the mouth of the barrel 1, it pushes the barrel mouth 1 around the turning point "A" upwards, thus forcing the locking cog on the barrel 1, into the locking groove on the breach 6, and the process is repeated.

The number of cogs on the barrel 1 , and the corresponding number of grooves on the breach 6 depends on the charge strength, i.e. the calibre and hardness of the materials from which the barrel 1 and the breach 6 are made. The cogs on the barrel 1 and the grooves on the breach 6 can be of various profiles (square, trapezoidal, saw-toothed, and sloped, etc.).

The Figure 2 shows the safety catches 5 and 5a that protrude on the both sides of the handgrip 2, Figure 1 and 2. In that position the safety catch 5 and 5a displaces the lever 15 from the grip with the trigger spring 11 on Figure2, and the trigger spring head 11 leans on the full parts of the catch 5 and 5a, thus preventing it's forward move, it cannot move the catch 12 and free the firing pin 13, thus ensuring double safety.

When the marksman grabs the handgrip 2, Figure 1 and 2, he at the same time presses the safety catch 5 and 5a towards the centre of the handgrip 2 Figure2, thus opening the cogs on the safety catch 5 and 5a, Figure2. The head of the cocking spring llcan move through this gap. The lever 15 enters the notch on the cocking spring 11 and the round can be fired. If the marksman presses the safety catch 5 or 5a, i.e. just one side, the system is blocked and the round cannot be fired. This means that if the pistol is dropped and falls on one of its sides, only one side of the safety catch 5 or 5a will be pressed and the round would not be fired accidentally. The Figure 1 shows that the return spring 7 of breach 6 is placed in the centre behind the bullet cradle, and the spring 4 of the firing pin 13 is placed in the centre of the return spring 7, which significantly reduces the volume of the whole pistol, and everything functions.

Claims

PATENT CLAIMS

1. The VHS pistol is characterised by that the firing pin (13), Figure 1, when cocked and hold in the firing position, protrudes from the rear end of the pistol for approximately 3 mm and so can be seen and felt with finger, thus indicating the pistol is cocked.

2. The VHS pistol is characterised by that the distance between the turning point "A" Figure 1 and the head of the breach (6) is the same for barrels (1) of different lengths and calibres, as well as the shape and the dimension of the cog on the barrel (1) and the locking groove on the head of the breach (6) are the same on all barrels (1), regardless of their lengths and calibres.

3. The VHS pistol is characterised by that the rear sight (10) and front sight (9) Figure 1, have a hole drilled along their length, through which the marksman aims at the target.

4. The VHS pistol is characterised by that the breach (6), Figure 1, has a groove into which the parts of the sight (10) are fitted.

5. The VHS pistol is characterised by, according to the claim 4, that the rear sight (10) is vertically adjusted by the wheel (16) Figure 1 and screw, and horizontally by the wheel (17) and screw.

6. The VHS pistol is characterised by that according to the claims 4 and 5, that the spring (18), Figure 1, holds the rear sight (10) around the turning point "E" tensed, and the wheels (16) and (17), that are depressed by the bulge on the breach (6), and which together with the groves on the wheel (16) and (17) edges prevent self-adjustment..

7. The VHS pistol is characterised by that the safety catches (5) and (5a) protrude from both sides of the handgrip (2) Figure 1 and 2, and in that position they displace the lever (15) from the grip with the trigger spring (11) on Figure 2, and the trigger spring head (11) leans on the full parts of the catch (5) and (5a), thus preventing move of the catch 12 and freeing the firing pin (13), thus preventing accidental firing of a round.

8. The VHS pistol is characterised by that according to the claim 7, that when the marksman grabs the handgrip (2), Figure 1 and 2, he at the presses the safety catches (5) and (5a), thus opening the passage for the head of the cocking spring (11), when the lever 15 enters the notch on the cocking spring (11) and the round can be fired by pulling the trigger (8).

9. The VHS pistol is characterised by that according to the claims 7 and 8, that when only one of the safety catches (5) or (5a) Figure2 is pressed, the space for passing of the trigger spring (11) is not opened, the catch (12) and the firing pin (13) cannot be released.

10. The VHS pistol is characterised by that the rear end of the barrel (1), Figure 1, rotates around the turning point "A" downwards, thus unlocking the cog on the rear end of the barrel (1) from the groove in the breach (6), thus enabling ejection of the cartridge and loading of a new round. During this, the breach (6) presses the head of the barrel (1), which, by turning around the turning point "A" takes the rear of the barrel (1) in the upper position where the cog on the barrel (1) slips into the groove on the breach (6) and thus locks the barrel again.

11. The VHS pistol is characterised by that the return spring (7) is placed in the centre behind the bullet cradle, and the spring (4) of the firing pin is placed in the centre of the return spring 7, and the breach (6), Figure 1.

12. The VHS pistol is characterised by that the number of cogs on the barrel (1) and the grooves on the breach (6) is from 1 to 6, and they can be of various profiles (square, trapezoidal, saw-toothed, and sloped, etc.).

13. The VHS pistol is characterised by that the bore for the turning point "A" on the barrel (1) is done in the form of a groove, parallel to the barrel (1) axis. The groove is 0-12 mm long, with a semicircle on both ends.