CN2658698Y - Fluid Bullet Launcher - Google Patents

Abstract

The utility model discloses a device for catapulting liquid son through air, the utility model provides a device for with liquid molecule accelerate to basically the same speed, and make them release with minimum torrent after and.

Description

Fluid Bullet Launcher

technical field

This invention relates generally, but not exclusively, to toy projectile launchers, and more particularly to a mechanism for shooting substantially intact liquid "bullets" through the air.

Background technique

Long ago, attempts were made to create devices for firing solid projectiles. These devices were originally used for hunting, attack and defense. They may have become part of the human psyche by now. As such, the projectile launcher is an ever-popular children's toy.

In one prior art variation of this toy, a gun-like launcher supports one or more projectiles that can be fired by a spring-loaded firing mechanism or a pneumatically-actuated firing device. launch out. Projectiles have come in equivalently varying shapes, and have included ping pong balls, foam elastic balls, lightweight projectiles, and foam arrows or projectiles. Examples of these prior art solid projectile launchers are disclosed in US Patent No. 4,892,081 (1990), issued to Moormann, and US Patent No. 4,694,815 (1987), also issued thereto.

There are also many prior art water launchers. The toy industry is quite competitive and hundreds of different water launchers have been developed over the years in order to profit from the inherent popularity of the toy. However, in the prior art, the launched water never appeared as a solid, compact projectile. Instead, the emitted water shapes fall into one of three basic categories. The first category is a continuous stream of water interrupted periodically, as produced by a basic spray gun. The second type emits elongated, disconnected or irregular volumes of water, similar to the patterns formed by throwing water from a cup or bucket. Finally, there is the device that emits numerous water droplets. To date, there is no toy device that can fire water bullets that are largely free of droplets, similar to air-flying stones.

An example of a "continuous flow" emitter is disclosed in US Patent No. 5,074,437 (1991) to D'Andrade et al. In this device, air pressure is established and stored by suction and then selectively used to pressurize stored water. When the trigger is actuated, the movement of pressurized water through a narrow nozzle creates a propelled stream of water. This water flow is continuous when the trigger is engaged and stops when the trigger is disengaged or when the driving pressure of the water is equal to atmospheric pressure. An example of a second "continuous flow" emitter is described in Tarng, US Patent No. 5,433,646 (1995). This device interrupts the flow of water at a relatively high frequency without circulating the water.

An example of an "irregular volume" emitter is mentioned in US Patent No. 5,339,987 (1994) to D'Andrade. The invention provides a trigger mechanism for controlling the flow of water released by the burst. The burst is elongated and irregular in shape and consists of numerous small water jets.

US Patent No. 5,662,244 to Liu et al. presents an example of a "multiple droplet" emitter. The utility model states: "The present invention has the general advantages of the traditional water gun, but the water charge (water charge) ejected by the present invention can be in the shape of bursting or spraying water, and these waters can fall on the predetermined target more. , without precise aiming.

While the above-mentioned prior art devices have provided some means of entertainment and recreation for the user, they have disadvantages and there remains a need in the art for more interesting and improved transmitters. Some disadvantages of solid projectile launchers are:

(a) Solid projectiles are prone to loss, thereby losing or limiting the play value of the launcher.

(b) Solid projectiles must be retrieved, which will interrupt the game.

(c) Solid projectiles may cause pain or injury on impact.

(d) Solid projectiles will add additional manufacturing costs to the toy.

On the other hand, prior art launchers do not allow water to be emitted as a intermittent, compact, visually recognizable "bullet". In-game, this manifests itself as the following disadvantages:

(a) It is difficult for children to act as someone who shoots solid objects such as stones or bullets.

(b) The projected water does not provide the sensation of being hit by an object, and there is no satisfying "pop" upon impact.

(c) Water launched by prior art water launchers is not suitable for traditional target games because discrete projectiles are not retrieved.

Utility model content

Therefore, the utility model can be used to overcome the disadvantages of the prior art. The appearance and performance of the liquid projectile launched by the utility model and flying in the air are like a solid flying object.

The theoretical basis of the present invention is that in order for a single liquid bullet to remain intact when flying through a vacuum, each molecule of the fluid must run in the same direction and at the same speed (ie without turbulence). To achieve this state, the preferred embodiment of the present invention attempts to first fill a movable container with a predetermined amount of liquid and then accelerate said container so that each molecule of the liquid flows in the same manner without turbulence. speed in the same direction. Finally, the invention provides a means of releasing bullets from the container, again without causing turbulence. This is achieved by configuring the side walls of the container to minimize turbulence as the liquid flows along the side walls and out of the container and by releasing the vacuum between the rear container wall and the fluid at the moment the rear container wall decelerates. and achieved. The result of this release is an airborne, essentially intact liquid bullet in which all molecules are moving in the same direction and at the same speed.

purpose and advantages

Therefore, purpose and advantage of the present utility model are:

(a) Water can be used as a projectile, and this is usually available in large quantities. In this way the risk of losing the projectile produced and thus the unusable situation of the toy is eliminated.

(b) The progress of the game will not be interrupted by the need to retrieve the projectile.

(c) Launchers can be sold without having to sell production projectiles, which reduces costs to consumers.

(d) Although projectiles can be made of water, children can act as people shooting solid objects such as stones and bullets.

(e) Projectile bullets composed of liquids are less likely to cause pain or injury on impact.

(f) Different from the water launching toys in the prior art, the utility model can launch projectiles similar to solid objects. Can provide a "hit" feel and a "pop" sound when hit.

(g) The present invention can be used in target shooting games designed to use solid projectiles.

(h) Discrete water bullets with volumes that are multiples of the volume of raindrops can be shot through the air. Since water bullets of this size are rare in nature, the effect is miraculous and creates exciting opportunities for marketable toys. This magical quality also presents the opportunity to promote television commercials and package imagery displays.

(i) Solid projectile launchers and water guns are both successful products on the market. However, the utility model combines the advantages of the two to create a unique and novel product field.

Brief description of the drawings

Below, the utility model is described in detail with reference to the accompanying drawings, and the accompanying drawings are respectively:

Fig. 1A is a perspective view of a "moving cylinder and moving piston" pattern example of the present utility model, which is in the position of "ready to launch";

Figure 1B is a cross-sectional view of Figure 1A;

Fig. 1C is a perspective view of the "moving cylinder and moving piston" pattern example of the present invention, which is in the position of "just launched";

Figure 1D is a cross-sectional view of Figure 1C;

Fig. 2A is the perspective view of the "moving cylinder and rear opening" pattern example of the present invention, which is in the position of "ready to launch";

Figure 2B is a cross-sectional view of Figure 2A;

Fig. 2C is a perspective view of an example of the "moving cylinder and rear opening" pattern of the present invention, which is in the position of "just launched";

Figure 2D is a cross-sectional view of Figure 2C;

Figure 3 shows a left perspective view of the preferred embodiment of the invention in the "ready to launch" position with the left side panel removed;

Figures 4, 5 and 6 show, respectively, a perspective view, a front view and a left sectional view of the preferred embodiment launcher assembly in a "ready to launch" position;

Figure 7 shows a left perspective view of the preferred embodiment in the "just fired" position with the left panel removed;

Figures 8, 9 and 10 show, respectively, a perspective view, a front view and a left sectional view of the preferred embodiment launcher assembly in the "just launched" position;

Figure 11 is an exploded perspective view of the right side, which represents the various components of the safety door assembly in the position of "just launched";

Fig. 12A is the sectional view of the "fixed container and moving piston" pattern example of the present utility model, which is in the position of "preparing to accelerate the piston";

Figure 12B is a cross-sectional view of an example of the "fixed container and moving piston" pattern of the present invention, which is in the position of "releasing the piston";

Fig. 12C is a cross-sectional view of an example of the "fixed container and moving piston" pattern of the present invention, which is in the position of "stopping the piston";

Labels in the drawings

15 mobile containers and mobile piston fluid bullet launchers

16 containers

17 pistons

18 liquid bullets

19 stop

20 (of container 16) longitudinal axis

21 Rear axle end

22 mobile containers and rear-opening liquid bullet launchers

23 (of container 24) axis

25 valve

26 liquid bullets

27 block

28 water bullet launcher

29 Emitter Assembly

30 containers

31 water bullets

32 pistons

33 compression spring

34 elastic drive belt

35 shell

36 openings

37 shell track

38 brake parts

39 (piston 32) arm

40 security door

41 push door spring

42 Resilient door return spring

43 valve axis

44 water tank

45 straws

46 one-way pull valve

47 pump body

48 one-way transfer valve

49 delivery hose

50 pump rod

51 pump rod pivot pin

52 pump piston

53 pump piston pivot pin

54 pump spring

55 sliding handle

56 Notch in container 30

57 Brake Pivot Pin

58 brake spring

60 flange

61 Angled Surfaces

62 The bottom of the container is raised

63 elastic stop band

64 container side raised

65 axis

66 Fixed container and moving piston liquid bullet launcher

67 fixed containers

68 Axis of container

69 pistons

70 liquid bullets

71 rear axle end

Detailed ways

Physical Analysis of Shooting a Liquid Bullet Through Air

The utility model can make discrete liquid bullets shoot through the air, and there are only a small amount or no accompanying liquid droplets. This effect is unique because airborne liquid bullets significantly larger than raindrops are rare in nature. Accordingly, the description of the present invention begins with a discussion of the physical properties of liquids in flight.

It is known that as raindrops fall, if they accumulate too large, they break up into smaller droplets. In fact, formulas have been developed to calculate the maximum size of water droplets that fall to the ground. The variables in these formulas depend primarily on the shape of the droplet, the volume of the droplet, the speed at which the droplet is moving, and the density of the air through which the droplet is passing. In general, as the speed of the water bullet moving through the air increases, the air pressure against the front of the water eventually flattens it and breaks it into smaller droplets. These smaller droplets may continue to flatten and break apart until the resulting droplets are small enough that they eventually free-fall fast enough for them to break apart.

The preferred embodiment of the utility model can launch a cylindrical water bullet with a volume of about 2 cubic centimeters. As this bullet moves through the air, the pressure of the air against its front and the internal attractive forces in the liquid itself cause it to initially gather into a somewhat spherical shape. However, if the liquid bullet continues to move at too high a speed, the air pressure against its front will eventually flatten or split it.

Experiments carried out with the model of the utility model show that when the volume of the water bullet increases, the maximum speed at which the bullet splits decreases. Conversely, when the volume of a water bullet decreases, the maximum speed at which the bullet splits increases. In another experiment, by varying the speed at which water bullets travel through the air, a 2 cm3 cylinder 2 has a maximum speed of about 22 mph at atmospheric pressure at sea level before breaking apart. This information was used to select drive springs for models that unleashed a liquid bullet just below 22 mph.

Our attention now turns to the problem of accelerating and releasing a single liquid bullet into air with little or no accompanying liquid droplets. This problem can be solved by realizing that every molecule in the liquid should move at the same speed and direction so that the liquid bullet remains intact when released. If this condition is met, there will be no force other than air pressure to split the bullet. However, if the liquid bullet is released under turbulent conditions, that is, if its molecules move at different speeds, the liquid may break up into different droplets moving in different directions. The first problem solved by the utility model is to accelerate the liquid bullet without causing turbulence. The second problem to overcome is releasing it without causing turbulence.

The solution of the present invention to the first problem is to accelerate the bullet while it remains inside the fixed wall of the container. Since the walls of the container are rigid, the seams are sealed, and there is no compressible fluid such as air inside or behind the bullet, there is no room for the fluid molecules to move, and this does not cause turbulence. Even if the front of the container is open, the liquid molecules will not tend to flow in that direction, because the accelerating force squeezes these liquid molecules towards the rear. Therefore, when the liquid bullet has been accelerated and is about to be released from the container, all the liquid molecules will be moving in the same direction with the same speed.

The solution to the second part of the problem, how to release the liquid bullet without causing turbulence, the utility model proposes two measures. The first measure is to release the vacuum at the rear of the bullet after the acceleration stops, so that the liquid can freely leave the container. A second measure is to configure the side walls of the container substantially parallel to the direction of acceleration of the container. This would allow liquid bullet molecules in contact with the container walls to leave the container without substantially changing their speed or direction.

Figures 1A, 1B, 1C and ID show one embodiment of the invention, Figures 2A, 2B, 2C and 2D show a second embodiment, and Figures 12A, 12B and 12C show a third embodiment. These three embodiments all utilize above-mentioned principle to launch liquid bullet.

First device to accelerate and release liquid bullets

Reference is now made to Figures 1A and 1B which show a perspective view and a cross-sectional view respectively of a "Moving Container and Moving Piston Liquid Bullet Launcher" 15 in a "ready to fire" position, referred to as the first stage . In this embodiment, the launcher 15 includes a liquid container 16 having a side wall parallel to the longitudinal axis 20 of the container 16 and including an opening at the right end of the axis 20 and a second opening at the left end of the axis 20 . The opening at the left end is sealed by a fixed piston 17 to prevent liquid leakage. Liquid bullet 18 is located within container 16 . In this orientation, the vacuum at the rear and sides of the liquid bullet 18 tends to prevent the bullet from exiting the right opening of the container 16 .

In the second phase, referred to as operation of the invention, a force is applied to the container 16 causing it to accelerate along the axis 20 and in the direction indicated by the arrow in FIG. 1D. Since the piston 17 and liquid bullet 18 are held by the container 16, they will accelerate at the same rate as the container 16. Therefore, during this phase, all three components will move at the same speed.

In the third phase, the container 16 hits the stop 19 . This will slow down the container 16, while the piston 17 and liquid bullet 18 continue to travel at their previous speed.

Figures 1C and ID show the fourth stage - the "just fired" position, where the liquid bullet 18 is released and flies out. At this point, the container 16 slows down and the piston 17 and liquid bullet 18 have moved forward together until the forward movement of the piston 17 is slowed due to the rear axle end of the piston 17 hitting the left end of the container 16. Since the liquid bullet 18 and the tip of the piston 17 are outside the container 16 when this occurs, only the vacuum retaining the liquid bullet 18 is at the tip of the piston 17 . In this position, the liquid bullet can disengage from the slower moving piston 17 with relatively little resistance. If desired, the tip or leading edge of the piston 17 may be shaped to minimize friction and disturbance to the liquid bullet 18 as it disengages.

In the fifth stage, the piston 17 returns to the original position described in the first stage, and a new liquid cartridge is loaded into the container 16 . At this point the launch cycle can be restarted.

A second device that accelerates and releases liquid bullets

2A and 2B respectively show a perspective view and a cross-sectional view of a second embodiment of the present invention. In this embodiment, the left end of the container 24 opens at the moment of deceleration. Shown is the Mobile Container and Rear Open Liquid Bullet Launcher 22 in the "Ready to Fire" position, now referred to as Phase A. The launcher 22 includes a liquid container 24 with side walls parallel to the longitudinal axis 23 of the container 24 and also includes an opening at the right end of the axis 23 and a second opening at the left end of the axis 23 . The opening at the left end is sealed against leakage by a valve 25 which is rotatable about a valve axis 43 . The inertia of the valve 25 is such that the product of the distance of the center of mass of the valve 25 below the valve axis 43 and the mass of the valve 25 below the valve axis 43 will significantly exceed the distance of the center of mass of the valve 25 above the axis 43 divided by the valve axis 43 above the product of the mass of the valve 25. A liquid bullet 26 is shown within the container. In this position, the vacuum at the rear and sides of the liquid bullet 26 tends to prevent the liquid bullet from exiting the right opening of the container well 24 .

In operation, in stage B of this embodiment, a force is applied to container 24 to accelerate container 24, valve 25 and liquid bullet 26 to the right along axis 23. Under acceleration, the valve 25 is pressed more tightly against the left side of the container 24 due to a clockwise moment about the valve axis 43 due to the moment of the mass 25 of the valve below the valve axis 43 being greater than the moment above the axis. over the opening, thereby sealing against leakage. During this phase the container 24, valve 25 and liquid bullet 26 will all be moving at the same speed at any point.

In phase C, the container 24 decelerates after hitting the stop 27 . Simultaneously, the larger moment of the mass under the axis of the valve 25 will make it open by turning counterclockwise, while the inertia of the liquid bullet 26 will make it continue to travel forward. Since the only vacuum holding the liquid bullet 26 is at the surface of the valve 25, the liquid bullet 26 will disengage from the retreating valve 25 with relatively little resistance, deformation or induced turbulence. If desired, the surface of the valve 25 that comes into contact with the liquid bullet 26 can be shaped to minimize friction and allow the liquid bullet 26 to disengage as smoothly and as undisturbed as possible.

Figures 2C and 2D show the stage D - "just launched" position. The container 24 has been decelerated, the valve 25 has been opened and the liquid bullet 26 has been fired in the direction of the arrow.

In phase E, measures are taken to return the valve 25 to the original position described in phase A, and a new liquid cartridge is loaded into the container 24 . The launch cycle can now be restarted.

A third device that accelerates and releases liquid bullets

Next, referring to FIG. 12A, there is shown a cross-sectional view of the "Liquid Bullet Launcher with Fixed Container and Moving Piston" at the position of the "Accelerating Piston", which is called the first stage. In this embodiment, the launcher 22 includes a fixed container 67 for liquid, the side walls of which are parallel to the longitudinal axis 68 of the container 67, and which also includes an opening at the right end of the axis 68 and an opening at the left end of the axis 68. Second opening. The opening at the left end is sealed by a fixed piston 17 to prevent liquid leakage. Liquid bullet 70 is shown within container 67 . In this orientation, the vacuum at the left and sides of the liquid bullet 70 tends to prevent the bullet from exiting the right opening of the container 67 .

In the second phase of operation, the container 67 is held stationary and a force is applied to the piston 69, thereby accelerating the piston 69 along the axis 68 and in the direction indicated by the arrow. Since the liquid bullet 70 is held by the container 67, the bullet is forced to accelerate at the same rate as the piston 69. Therefore, during this phase, both components are moving at the same speed.

Figure 12B shows the position of the "release piston". During this third phase, the acceleration force is interrupted, allowing the piston 69 and liquid bullet 70 to continue unhindered movement at a constant speed.

Finally, Figure 12C shows the fourth stage - the "Stop Piston" position, in which the liquid bullet 70 has been released to fly out in the direction indicated by the arrow. Simultaneously with this point, the forward movement of the piston 69 has been stopped by the rear axle end 71 of the piston 69 hitting the left end of the stationary container 67 . This disengages the liquid bullet 70 from the piston 69 and continues to move unimpeded.

In a fifth stage, the piston 69 is retracted to the original position shown in stage g and a new liquid cartridge is loaded into the container 67 . At this point, the launch cycle can be restarted.

Transmitter Assembly of the Preferred Embodiment

Figure 3 shows a side perspective view of the preferred embodiment of the invention, a water bullet launcher 28, with the left side panel removed, in the "ready to fire" position.

4, 5 and 6 show a perspective view, a front view and a cross-sectional view, respectively, of the launcher assembly 29 in a "ready to fire" position. Assembly 29 includes a container 30 , a water bullet 31 , a piston 32 , a compression spring 33 and an elastic drive belt 34 . These are the main moving parts for making the launch water bullet 31 work.

Figures 8, 9 and 10 show a perspective view, a front view and a cross-sectional view, respectively, of the launcher assembly 29 in the "just fired" position. The piston 32 has stopped in its forward position with its tip protruding from the container 30 . The water bullet 31 has broken away from the tip of the piston 32, and is flying in the air along the direction of the arrow in FIG. 10 .

Referring now to FIG. 3, there is an opening 36 in the front of the housing 35 through which the water bullet 31 can be discharged after firing. Assembly 29 is retained within housing 35 by notches 56 on each side of container 30, which in turn engages housing rails 37 and can slide freely thereon, thereby allowing assembly 29 to move left and right within housing 35. Back and forth reciprocating motion.

Assembly 29 is shown in a "ready to fire" position with drive belt 34 stretched and taut between container 30 and the front of housing 35 . Although the drive belt 34 exerts a force to pull the assembly 29 forward, the assembly 29 cannot move due to the restriction of the detent 38 which locks against the arm 39 of the piston 32 .

Safety door assembly of preferred embodiments

Figures 3, 7 and 11 show the components of the safety door assembly. The safety door 40 prevents someone from inserting a makeshift projectile into the container 30, or from being in the path of the assembly 29, thereby ensuring that only liquids can be fired.

Referring now to FIG. 11 , this figure is an exploded perspective view of the components of the safety door assembly in the position of "just launched", and the components shown are respectively the door 40, the door axis 65, the push door spring 41, and the elastic door return spring 42 , assembly 29 and a container side projection 64. In operation, when the container 30 runs in front of the launcher 28 , the protrusion 64 will strike the push spring 41 . As the protrusion 64 continues to move forward, the door 40 is rotated open about the door axis 65 by the force of the protrusion 64 , which is transmitted by the push door spring 41 against the rear of the door 40 . When the door 40 is open, the water bullet 31 can pass through the opening 36 without hindrance. When the elastic stop band 63 completely stops the forward movement of the assembly 29 and then pulls the assembly 29 back toward the right end of the housing 35, the pressure exerted by the push spring 41 on the door 40 is released and the spring 42 quickly causes the assembly 29 to move forward. Door 40 is closed.

One advantage provided by such an arrangement of assembly parts is that the length, spring rate and initial tension of the push spring 41 and the length, spring rate and initial tension of the return spring can be adjusted so that the door 40 is 31 The moment of passage through the door 40 area remains open. This extremely short period of time prevents someone from reacting quickly enough to grab the door 40 in the open position to hold the door open and then insert a temporarily provided projectile into the launcher 28 . A second advantage is that, when in its rest position, the door 40 cannot be opened to insert an improvised projectile, because there is not enough space between the housing 35 and the door 40 to insert a finger into the door 40 and Pull it away from this. Again, this will prevent the subsequent insertion of improvised projectiles. A third advantage is that the door 40 prevents a person's fingers from being inserted into the path of the assembly 29 and thereby being struck by the assembly 29 . A fourth advantage is that if a finger is inserted into the opening 36, or held against the front of the door 40, no appreciable impulse will be felt when the launcher 29 is fired. The reason for this is that the spring rate of the push spring 41 is low enough that even when the protrusion 64 strikes the opposite end of the push spring 41, it can only exert a small force on the door 40.

The charging-release mechanism and water delivery system of the preferred embodiment

Also shown in FIG. 3 is a water delivery system for delivering water from tank 44 to container 30 . In a complete operation cycle, water enters the inner cavity of the pump body 47 from the water tank 44, through the suction pipe 45, through the one-way stretch valve 46, through the one-way delivery valve 48, through the delivery hose 49 and then into the container 30. in the inner cavity. It should be noted that the interior cavity of the container 30 is filled with water, and that the container 30 is sloped downward towards the opening, the water contained therein will be restricted from being able to flow out of the container. Valve 48 seals from its initial cracking pressure, which in the case of the preferred embodiment exceeds the pressure of 10 inches of water. Experiments with the model of this example have shown that when these seals are intact, the loaded water will not flow out of the container chamber if the diameter of the chamber opening is less than about 0.32 inches.

Referring again to Figure 3, the pump rod 50 is connected to the housing 35 by a pump rod pivot pin located at the left end of the pump rod. The pump piston 52 is connected to the rod 50 by a pump piston pivot pin 53 . During the "water delivery" phase, the lever 50 rises as the assembly 29 moves to the right, causing the lever 50 to rotate counterclockwise about the pivot pin 51 . This drives the piston 52 into the lumen of the pump body 47 , thereby pushing the water contained in said lumen into the hose 49 . When this occurs, water can be prevented from moving through valve 46 into tube 45 . When the water delivery system has been primed, a water bullet equal to the amount of water removed from the lumen of pump body 47 is pushed into container 30 . During the "water intake" phase, the pump spring 54 pushes the rod 50 , turning the rod 50 clockwise about the pin 51 . Like this, a certain amount of water is sucked in the pump body 47 from the water tank 44, through the pipe 45 and the valve 46 due to vacuum. When this occurs, valve 48 prevents water from being drawn through hose 48 into pump body 47 .

Emitter's launch cycle

A sliding handle 55 is mounted under the housing 35 , utilizing in this embodiment a notch in the side of the handle 55 that mates with a track in the housing 35 . Orbit not shown. This configuration allows the handle 55 to freely slide back and forth in the same direction of movement as the assembly 29 . The following sequence describes a complete firing cycle, assuming a water bullet has just been fired:

The cycle begins with the assembly 29 resting on the left side or front of the housing and the handle resting on the rear of the housing 35 . The operator pushes the handle 55 from the rear of the housing 35 to the front. At that point, the detent 38, pivoted within the handle 55 by the detent pivot pin 57 and stably biased upward by a detent spring 58, slides under the lower portion of the arm 39 of the piston 32, and then Quickly recovers upwards, engaging arm 39 at its left end.

Next, the operator pulls the handle 55 to the right, or toward the rear of the housing 35 . When this happens, the elastic drive belt 34 connected between the front of the housing 35 and the container 30 is further tensioned. In addition, when the handle 55 is moved to the right, the following actions will occur in sequence:

The container 30 remains in place while the piston 32 moves to the right until the head of the piston 32 comes into contact with the flange 60 inside the container 30 . Figure 6 shows this orientation of the component parts. Referring again to FIG. 3 , then the container 30 also initially moves to the right and is pulled by the head of the piston 32 . As it runs to the right, the container 30 slides on the bottom of the rod 50, gradually raising the lever 50. Rod 50 raises piston 52 which will push water from pump body 47 through valve 48 and hose 49 into container 30 . Thereafter, the angled surface 61 of the housing 35 (shown on the bottom rear side of the housing 35) pushes the detent 38 downward, thereby releasing the arm 39 and the piston 32, thereby allowing the elastic drive belt Pull assembly 29 forward.

Then, the container 30, the piston 32 and the water bullet 31 are all accelerated to the left by the drive belt 34. Although this acceleration increases the pressure in hose 49 , water is prevented from flowing back into tank 44 through valve 48 and valve 46 . The pump spring 54 pushes the now unsupported rod 50 downward, thereby drawing an additional load of water into the pump body 47 . As the assembly 29 reaches the front of the housing 35, the protrusion 62 at the bottom of the container strikes the stop band 63, thereby slowing the container 30, while the piston 32 and water cartridge 31 will continue to travel unimpeded.

The piston 32 then moves forward in the container 30 until the piston slows down when the arm 39 strikes the spring 33 which is mounted in the container 30 . Referring to FIG. 11 , at about the same time, the protrusion 64 of the container on the right side of the container 30 strikes the left end of the push spring 41 . The door 40 is pushed open by the force exerted by the side protrusion 64 against the push spring 41 . At this point, Figures 7, 8, 9, 10 and 11 show the location of all the components of this embodiment. Both the water bullet 31 and the tip of the piston 32 are outside the wall of the container 30 . Since the spring 33 decelerates the piston 32 but not the water bullet 31 , the inertia of the water bullet 31 pushes it away from the slower running piston 32 . When this occurs, the smooth conical tip 32 of the piston 32 helps prevent the water bullet 31 from disengaging upon release by causing the rear of the water bullet 31 to gradually slide off the tip of the piston 32 . The spring 33 also helps to force the water bullet 31 out without shattering by reducing the impact of the piston striking the container 30 . Like this, water bullet 31 just can launch.

Finally, the stop band 63 fully stops the forward movement of the container 30 and the piston 32 and they can be pulled back towards the rear of the housing 35 by the spring force of the stop band 63 . Thereby, the pressure exerted by the door push spring 41 against the door is released and the spring 42 closes the door 40 . Then, all combined parts of the motion come to a halt, and the operator can move the slide handle forward again to begin another firing cycle.

Variations and Improvements

Obviously, according to the content disclosed above, the utility model can have various modifications and improvements. For example, while the embodiment shown in FIGS. 2A, 2B, 2C, and 2D utilizes an inertia-actuated rotary valve 25 to open the rear of the container 24, the rear of the container 24 could also be opened by a linear inertial valve, or It opens by a plate that can move sideways and by a spring and trigger mechanism that opens at the moment the container decelerates.

Additionally, the elements and features disclosed herein may be used in any fluid projectile launching device. For example, the principles of the present invention can be used to produce a production line of toy weapons, such as water bullet pistols, water bullet machine guns, water bullet mortars, water bullet shotguns, and water bullet bows and arrows. As a second embodiment, the utility model can be used in water theme parks to throw larger water drops at participants. As a third embodiment, the utility model can become a part of a miniature toy manual toy assembly utilizing water weapons, such as miniature cannons, rocket launchers, hand-held weapons and assault machines. As a fourth embodiment, the present invention can be used to emit smoke rings or other gas shapes. The invention is not limited to gun type devices. For example, its principles could be used to create a sporting article that throws water balloons at batsmen and that can be actuated either manually or via a garden hose. Or it could be a toy sprinkler for summer play, intermittently throwing water beads at children at play. Finally, the invention can be used in devices that are entirely outside the field of toys, such as decorative water fountains that shoot water beads into the air, watering equipment for lawns, or for realizing Industrial purposes for other liquid bullet applications. Therefore, it is to be understood that within the scope of the appended claims, the invention can be practiced, and its function and results can be realized, not necessarily as specifically described in the embodiments herein.

Claims (14)

1. A fluid bullet launcher, the launcher comprising: A fluid container having a first end and an opposite end having side walls substantially parallel to a straight axis, a substantially unrestricted exit opening at said first end of said container, and a second opening at the opposite end of said container; contained fluid may exit said container through said substantially unrestricted exit opening at said first end of said container; a movable piston positioned within the side wall of said container, said piston having means operable within said container in a direction parallel to said axis of said container, having an inner cross-section corresponding to said axis of said container The side wall is of the same but smaller internal cross-sectional shape and has means for forming a seal limiting leakage of said contained fluid from said second opening of said container. 2. A fluid bullet launcher as claimed in claim 1 wherein first means is arranged to stop movement of said piston at or near said exit opening of said container. 3. The fluid bullet launcher of claim 2, wherein said first means includes a stem portion protruding from the rear of said piston, said stem portion extending through said second opening but less than The second opening is small, the rod portion has a protrusion at a distance from the piston, the protrusion cannot pass through the second opening at the rear end of the axis, and thus the rod portion allows the piston to Runs freely within the container, but stops the piston movement in the region of the outlet hole of the container. 4. The fluid bullet launcher of claim 1, wherein said launcher further comprises a housing for holding said container, said housing allowing said container to selectively The axis is parallel to the direction of movement. 5. The fluid bullet launcher of claim 1, wherein said launcher further comprises a second means for loading fluid into said container, said second means comprising: A fluid tank with an opening for filling fluid into the tank, the tank communicates with the channel for conveying fluid through a one-way valve and opens into a pump chamber, the The pump chamber communicates with the passageway connected to the interior of the container through a one-way valve, and the pump chamber includes a piston for selectively delivering fluid into the container. 6. The fluid bullet launcher of claim 1, said launcher further comprising a third means for preventing fluid from leaking out of the front of said container prior to said deceleration. 7. The fluid bullet launcher of claim 6, wherein said third means comprises a door rotatably mounted in said exit opening region of said container, said door being closing and sealing the exit opening against fluid leakage; the door having means for pivoting open when the container is accelerated or moved at a constant speed in a direction from the second opening to the exit opening, the Means allow said contained fluid to drain when said container is decelerated in said direction. 8. The fluid bullet launcher of claim 1, wherein said launcher further includes a means for accelerating or decelerating said container, said means being selectable from the group consisting of These include: elastic material springs, metal springs, an electrically generated force, and fluid pressure. 9. The fluid bullet launcher of claim 8, wherein said launcher further comprises means for sequentially starting said acceleration of said container and then decelerating said container to zero, and then start the cycle again. 10. The fluid bullet launcher of claim 9, wherein said means for activating comprises: an elongated toothed belt rotatably mounted on said housing, capable of cooperating with said piston and drawing said container into an accelerated position, an accelerator arm rotatably mounted on said piston, said arm having a means for cooperating with teeth on said toothed belt and having means for releasing the piston and the container when the end of the means for rotating said toothed belt. 11. The fluid bullet launcher of claim 4, said launcher further comprising: a rotatably mounted door which, when closed, prevents the introduction of objects into said container, a compressed push door spring that communicates with the door and opens the door when the spring is struck by the container, and A door return spring which pulls the door closed after the contained fluid bullet is released and after the container and the return spring are retracted from the door area. 12. A fluid bullet launcher comprising: A container for a fluid having side walls substantially parallel to a straight axis, a substantially unrestricted exit opening at said first end of said container, and having a a second opening at the opposite end of the container, the contained fluid may exit said container through said substantially unrestricted exit opening at said first end of said container; and a sixth means for for substantially restricting passage of said contained fluid through said second opening when said container is moving or accelerating at a constant velocity in a direction from said second opening toward said exit opening, but when said container is decelerated , the seal formed by said means for confining can be broken. 13. The fluid bullet launcher of claim 12, wherein said sixth means comprises a valve rotatably mounted in the region of said second opening of said container, when said container is When moving or accelerating in a direction from the second opening towards the exit opening at a constant speed, the valve is normally closed; when the container is decelerated in that direction, the valve is operable to open, thereby turning the Unwinding at the second opening, thereby allowing the contained fluid to run freely towards the exit opening. 14. The fluid bullet launcher of claim 2, said launcher further comprising a seventh means for sequentially accelerating said piston and said contained fluid relative to said container, then stopping the acceleration and The piston and the contained fluid are allowed to continue moving at a constant velocity until the piston movement stops at or near the exit opening of the container.

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