TOY LAUNCH APPARATUS WITH SAFETY VALVE
A toy launch apparatus with a safety valve. The safety valve includes a stationary valve component with a tubular shape and an open inlet end. Ports in the tubular component help define an air path from the open inlet through the ports. A slideable valve component including a sleeve portion and extending fingers slides along an outer surface of the stationary valve component. A valve spring biases the slideable valve component forward to close the ports and when a dart is loaded, a back wall of the dart pushes the extending fingers of slideable valve component rearward to open the ports. In the open position the slideable valve component is out of the air path such that no pressure drop is attributed to the slideable valve component. When the dart is discharge, the valve spring biases the slideable valve component forward to close the ports.
This application which claims priority pursuant to 35 U.S.C. 119(e) and 120 to U.S. Provisional Patent Application No. 61/881,595, filed Sep. 24, 2013.
FIELD OF THE INVENTIONThe present invention relates generally to a toy launch apparatus, and, more particularly, to a toy launch apparatus that has a very efficient safety valve to prevent operation of the launch apparatus unless a projectile of predetermined shape is inserted.
BACKGROUND OF THE INVENTIONToys and other devices that discharge objects have been designed in the past with various housing and internal elements. These devices are designed to discharge specifically design projectiles that eliminate or greatly reduce bodily injury and property damage. Undesirable objects for such devices may include hard and/or sharp items, such as pencils or marbles. To insure that users do not succeed in inserting workable objects into discharge devices that are dangerous and/or destructive, safety features have been developed. One such safety feature is found in a patent issued in 1996 to D'Andrade, U.S. Pat. No. 5,529,050, and entitled “Safety Nozzle For Projectile Shooting Air Gun.” The '050 patent purports to disclose a safety mechanism having a nozzle with a front portion 111 and a rear portion 103 and a movable valve element 121 biased by a spring 141 against a hollow launch tube 115. The valve element is located in the path of airflow from an inlet 105 to a hollow chamber 117 inside the launch tube. The valve element 121 has a cross shaped configuration with air passage openings 127, 129, 131, 143 above and below the horizontal arm of the cross. To operate, forward extending posts 123, 125 are engaged by a rear portion of a hollow projectile 161 when the projectile is inserted into the nozzle. The projectile pushes the posts 123, 125 rearward, and the posts push the valve element 121 rearward against the biasing spring. This opens the air passageway around the cross-shaped valve element. When pressurized air is introduced through the inlet 105 the projectile is discharged, and with the projectile discharged, the biasing spring closes the valve element against the launch tube.
The valve element does not open unless the inserted projectile has a predetermined shape that allows engagement with the two posts. However, a problem with the nozzle and the valve element is that the air pressure generated by a launch spring must bear against and flow around the valve element before reaching the projectile to cause discharge. This airflow route causes a pressure drop, a loss of energy that is not desirable or efficient.
The inventions discussed in connection with the described embodiments below address these and other deficiencies of the prior art. The features and advantages of the present inventions will be explained in or become apparent from the following summary and description of the preferred embodiments considered together with the accompanying drawings.
SUMMARY OF THE INVENTIONIn accordance with the present invention, an advantageous method and apparatus are provided in the form of a toy launch apparatus that is designed to discharge soft foam projectiles. The launcher includes an efficient safety valve to prevent many unacceptable or undesirable objects from being inserted into the launcher and yet minimizes a pressure drop in operation. The launch apparatus is easily operated, even by young children, and requires a properly designed projectile to be inserted, a slide to be moved rearward to cock a launch spring, and a trigger pull to be actuated. The launch apparatus with the safety valve also has the advantages of being relatively simple, easy to operate, fun to use, safe, relatively inexpensive, compact and yet, structurally robust.
Briefly summarized, the invention relates to a toy launch apparatus with a safety valve including a housing, a dart receiving structure mounted in the housing, an air passageway structure mounted in the housing in communication with the dart receiving structure, the air passageway structure including a peripheral wall with an outer surface, a rearward end open to air flow through the air passageway, the wall extending forward from the rearward end, and a port in the wall, a valve sleeve slideable along the outer surface of the wall between a first position blocking the port in the wall to air flow, and a second position spaced away from the port and spaced away from air flow through the air passageway.
The invention also relates to a method for making a toy launch apparatus with a safety valve, the steps of the method including forming a housing, mounting a dart receiving structure in the housing, forming an air passageway structure in the housing, the air passageway including an open rearward end, a peripheral wall extending forward and a port in the wall, placing the air passageway structure in communication with the dart receiving structure, forming a blocking structure having a flange, mounting the blocking structure to the peripheral wall, the blocking structure being movable between a forward position to block the port and a rearward position to unblock the port, and when in the rearward position the blocking structure is spaced from air flow through the passageway structure, mounting a valve spring to the blocking structure to bias the blocking structure to the forward position, mounting a cylinder in the housing, the cylinder being in communication with the air passageway structure, and mounting a piston in the cylinder.
For the purpose of facilitating an understanding of the invention, the accompanying drawings and detailed description illustrate preferred embodiments thereof, from which the invention, its structures, its construction and operation, its processes, and many related advantages may be readily understood and appreciated.
The following description is provided to enable those skilled in the art to make and use the described embodiments set forth in the best mode contemplated for carrying out the invention. Various modifications, equivalents, variations, and alternatives, however, will remain readily apparent to those skilled in the art. Any and all such modifications, variations, equivalents, and alternatives are intended to fall within the spirit and scope of the present invention.
Referring to
Referring now to
The inner tube 42 includes a front-end portion 50. The inner tube front-end portion 50 supports a front bushing 52 for mounting and supporting a front-end portion 54 of the elongated pipe 44. The rear end portion 40 of the inner tube 42 supports a rear bushing 56. The rear bushing 56 mounts and supporting a rear end portion 58 of the elongated pipe 44. Also, mounted to the rear bushing 56 is the piston 32 having an O-ring mounting 60 and an O-ring seal 62. A dart receiving structure in the form of a dart tube 64 is mounted to the front bushing 52. The dart tube replaces a bolt of a real rifle using metal-jacketed ammunition and eliminates the problem of soft darts jamming against one another.
The rear portion 36 of the cylinder 30 forms with the piston 32 an air chamber 70 between them, and air in the air chamber 70 is able to communicate with the dart tube 64 through the piston 32, the rear bushing 56, the air passageway 46 in the pipe 44, and the front bushing 52. The cylinder 30 is slideable relative to the piston 32 between an extended position, shown in
The cylinder 30 also includes longitudinally extending slot-shaped air ports, such as the ports 72, 74,
Referring now to
A return spring 120,
A magazine latch and release mechanism 126 is mounted to the housing 12 and functions to latch the magazine 24 with a spring biased pin 127 that engages structure around an opening 128 in the magazine. A lever actuator 129 is mounted to the housing to retract the pin 127 when pressed so that the magazine 24 is released or disengaged from the rifle. A small barrier panel 130,
The general operation of the rifle is explained in more detail with reference to
When the cocking handle 22 is drawn fully rearward, as shown in
Referring now to
When the operator pulls the trigger 20, the link 124 retracts the sear 114,
Once the pivot bar and the cross bar fastener 108, 110 is disengaged, the return spring 120 starts to move the dart tube 64, the inner tube 42, and the cylinder 30 to their rearward positions. Thereafter, as shown in
An important feature of the present invention is an improved safety valve 200,
A slideable valve component 234,
A valve spring 250 positioned between the spring seat 216 of the stationary valve component 208 and the flange 238 of the slideable valve component 234 pushes or biases the slideable valve component 234 forward to the closed position (see
When the sleeve portion 236 is in the open position, air flowing through the safety valve proceeds mostly or entirely unimpeded as symbolized by arrows 252, 254,
An alternative safety valve 260 is shown in
To prevent high-pressure discharge air from escaping down the dart tube 206a around a loaded dart, an O-ring seal 268 may be placed in the dart tube 206a downstream or forward of the slideable valve component 234a. The seal 268 compensates for slight gaps between the outer wall of the dart and the inner wall of the dart tube. The seal may also compensate should the high-pressure discharge air distort the thin walled dart momentarily.
O-ring 270 is used to prevent air leaks and an O-ring 272 may be used to act as a shock absorber for the rapidly moving piston 204a in the cylinder 202a. Identical O-rings are shown in
An alternative embodiment of a launch apparatus is illustrated in
The present invention also includes a method 400,
It is noted that throughout this description, words such as “forward,” “rearward,” “front” and “rear,” as well as similar positional terms, refer to portions or elements of the launch apparatus as they are viewed in the drawings relative to other portions, or in relationship to the positions of the apparatus as it will typically be held and moved during play by a user, or to movements of elements based on the configurations illustrated.
The toy launch apparatus disclosed in detail above have great play value, are fun to use and easy to operate, and are safe, even for young children, and yet the launch apparatus have robust, but simple structures, that may be produced at reasonable cost.
From the foregoing, it can be seen that there has been provided features for an improved toy launch apparatus with a safety valve and a disclosure of methods for making the toy. While particular embodiments of the present invention have been shown and described in detail, it will be obvious to those skilled in the art that changes and modifications may be made without departing from the invention in its broader aspects. Therefore, the aim is to cover all such changes and modifications as fall within the true spirit and scope of the invention. The matters set forth in the foregoing description and accompanying drawings are offered by way of illustrations only and not as limitations. The actual scope of the invention is to be defined by the subsequent claims when viewed in their proper perspective based on the prior art.
Claims
1. A toy launch apparatus with a safety valve comprising:
- a housing;
- a dart receiving structure mounted in the housing;
- a stationary valve component forming an air passageway mounted in the housing in communication with the dart receiving structure, the stationary valve component including a tube portion with an outer surface, a rearward end open to air flow through the air passageway, the tube portion extending forward from the rearward end, and a port in the tube portion;
- a slideable valve component movable along the outer surface of the tube portion between a first position blocking the port to airflow, and a second position spaced away from the port and spaced away from air flow through the air passageway.
2. The toy launch apparatus of claim 1, including:
- a valve spring connected to the slideable valve component and the stationary valve component for biasing the slideable valve component to the first position.
3. The toy launch apparatus of claim 1, wherein:
- the slideable valve component includes a flange.
4. The toy launch apparatus of claim 1, wherein:
- the slideable valve component includes an extension structure for being engaged by a dart loaded in the dart receiving structure, the dart causing the slideable valve component to move from the first position to the second position.
5. The toy launch apparatus of claim 1, wherein:
- the stationary valve component is cylindrical; and
- the slideable valve component is cylindrical.
6. The toy launch apparatus of claim 5, including:
- a valve spring connected to the slideable valve component for biasing the slideable valve component to the first position.
7. The toy launch apparatus of claim 6, wherein:
- the slideable valve component includes a flange.
8. The toy launch apparatus of claim 7, wherein:
- the slideable valve component flange is in communication with the valve spring.
9. The toy launch apparatus of claim 8, including:
- the slideable valve component includes an extension structure for being engaged by a dart loaded in the dart receiving structure, the dart causing the slideable valve component to move from the first position to the second position.
10. The toy launch apparatus of claim 1, including:
- a cylinder mounted in the housing and in communication with the stationary valve component; and
- a piston mounted in the cylinder.
11. The toy launch apparatus of claim 9, including:
- a cylinder mounted in the housing and in communication with the stationary valve component; and
- a piston mounted in the cylinder.
12. A toy launch apparatus with a safety valve comprising:
- a housing;
- a dart receiving structure mounted in the housing;
- a passageway structure mounted in the housing and in communication with the dart receiving structure, the passageway structure including an open rearward end, a tubular wall extending forward from the open end and a port in the wall; and
- a blocking structure mounted to the wall, the blocking structure movable between a forward position wherein the port in the wall is blocked and a rearward position wherein the port in the wall is unblocked and the blocking structure is spaced from airflow through the passageway structure.
13. The toy launch apparatus of claim 12, including:
- a valve spring for biasing the blocking structure to the forward position.
14. The toy launch apparatus of claim 13, including:
- a cylinder mounted to the housing, the cylinder in communication with the passageway structure; and
- a piston mounted in the cylinder.
15. The toy launch apparatus of claim 14, wherein:
- the blocking structure includes a flange.
16. The toy launch apparatus of claim 15, wherein:
- the blocking structure includes an extension structure for engaging a dart loaded in the dart receiving structure, the dart causing the blocking structure to move from the first position to the second position.
17. The toy launch apparatus of claim 16, wherein:
- a forward end of the valve spring bears against the flange.
18. A method for making a toy launch apparatus with a safety valve, the steps of the method comprising:
- forming a housing;
- mounting a dart receiving structure in the housing;
- forming a stationary valve component in the housing, the stationary valve component including an open rearward end, a tube extending forward and a port in the tube;
- placing the stationary valve component in communication with the dart receiving structure;
- forming a slideable valve component having a flange;
- mounting the slideable valve component to the tube, the slideable valve component being movable between a forward position to block the port and a rearward position to unblock the port, and when in the rearward position the slideable valve component is spaced from air flow through the stationary valve component;
- mounting a valve spring to the slideable valve component to bias the slideable valve component to the forward position;
- mounting a cylinder in the housing, the cylinder being in communication with the stationary valve component; and
- mounting a piston in the cylinder.
19. The method of claim 18, wherein:
- the slideable valve component includes an extension structure; and including the step of:
- mounting the slideable valve component so that the extension structure engages a dart loaded in the dart receiving structure.
20. The method of claim 19, including the step of:
- mounting the slideable valve component so that the valve spring biases the flange.
Type: Application
Filed: Sep 23, 2014
Publication Date: Mar 26, 2015
Inventor: David Michael Nugent (Newport, RI)
Application Number: 14/493,670
International Classification: F41B 11/723 (20060101); F41B 11/64 (20060101); F41B 11/89 (20060101);