Pneumatically operated projectile launching device

• US 5,881,707 A
• Filed: 01/15/1997
• Issued: 03/16/1999
• Est. Priority Date: 01/16/1996
• Status: Expired due to Term

• Current Assignee: Kee Action Sports LLC (Kore Outdoor Inc.), Smart Parts Incorporated
• Original Assignee: Smart Parts Incorporated
• Inventors: Gardner, William M. Jr.
• Primary Examiner(s): Eldred, J. Woodrow
• Application Number:
  US08/783,064
• Time in Patent Office: 790 Days
• Field of Search: 124/77, 124/32, 124/73, 124/54
• US Class Current: 124/77
• CPC Class Codes: F41B 11/52 the projectiles being loosely held in a magazine above the gun housing, e.g. in a hopper
• CPC Class Codes: F41B 11/57 Electronic or electric systems for feeding or loading F41B11/53 takes precedence
• CPC Class Codes: F41B 11/62 with pressure supplied by a gas cartridge
• CPC Class Codes: F41B 11/71 Electric or electronic control systems, e.g. for safety purposes
• CPC Class Codes: F41B 11/721 for controlling gas pressure for both firing the projectile and for loading or feeding

Abstract

The pneumatically operated projectile launching device is preferably comprised of three principal elements: a body which houses and interconnects all of the pneumatic components and also houses the electrical power source, a grip mounted to the body which includes an electrical switch that activates a launching sequence, and an electrical control unit housed within both the body and the grip which directs flow between the pneumatic components to load, cock and fire the gun. The body preferably contains a plurality of chambers in communication with each other including a chamber containing and distributing pressurized gas, a chamber containing a compressed gas storage chamber and mechanisms for filling the storage chamber with gas and releasing gas from the storage chamber to fire the projectile, and a chamber containing mechanisms for loading and launching the projectile. The electrical control unit preferably includes an electrical power source which activates an electrical timing circuit when the electrical switch is closed, and two electrically operated pneumatic flow distribution devices. When the electrical switch is closed to initiate the launching sequence the projectile is first loaded into the launching mechanism by electrical timing circuit actuation of the first electrically operated pneumatic flow distribution device. The projectile is then fired when the electrical timing circuit actuates the second electrically operated pneumatic flow distribution device to release gas from the compressed gas storage chamber into the launching mechanism.

Claims

1. A pneumatically operated device for launching a projectile comprising:

A. a body having a plurality of chambers including;

(i) a first chamber containing compressed gas;

(ii) a second chamber in communication with said first chamber having;

(a) a compressed gas storage chamber for storing said compressed gas;

(b) a compressed gas filling mechanism for filling said compressed gas storage chamber;

(c) a compressed gas releasing mechanism for releasing said compressed gas from said compressed gas storage chamber to fire said projectile;

(iii) a third chamber in communication with said first chamber and said second chamber having;

(a) a projectile launching mechanism for launching said projectile;

(b) a projectile loading mechanism for in communication with a source of projectiles for loading said projectiles into said projectile launching mechanism;

B. a grip including an electrical switch;

C. an electrical control unit comprising;

(i) an electrical timing circuit electrically connected to said electrical switch for actuation thereby;

(ii) first and third electrically operated pneumatic flow distribution mechanisms electrically connected to said timing circuit for actuation thereby, said first and third distribution mechanisms each being positionable between;

(a) a first position in which said projectile launching mechanism is prevented from receiving said projectile;

(b) a second position which enables said projectile launching mechanism to receive said projectile;

(iii) a second electrically operated pneumatic flow distribution mechanism electrically connected to said timing circuit for actuation thereby, said second distribution mechanism being positionable between;

(a) a first position which enables said compressed gas storage chamber to be filled with said compressed gas;

(b) a second position which enables release of said compressed gas from said compressed gas storage chamber to launch said projectile;

(v) an electrical power source connected to said electrical switch.

2. The pneumatically operated gun of claim 1 wherein:

A. said first electrically operated pneumatic flow distribution mechanism is actuated by said timing circuit from said first position to said second position to direct said compressed gas from said first chamber such that;

(i) said projectile loading mechanism is disabled to prevent said projectile launching mechanism from receiving said projectile when said first electrically operated pneumatic flow distribution mechanism is in said first position;

(ii) said projectile loading mechanism is actuated to enable said projectile launching mechanism to receive said projectile when said first electrically operated pneumatic flow distribution mechanism is in said second position;

B. said second electrically operated pneumatic flow distribution mechanism is actuated by said timing circuit from said first position to said second position to direct said compressed gas from said first chamber such that;

(i) said compressed gas filling mechanism is actuated to fill said compressed gas storage chamber when said second electrically operated pneumatic flow distribution mechanism is in said first position;

(ii) said compressed gas releasing mechanism is actuated to release said gas from said compressed gas storage chamber into said projectile launching mechanism to launch said projectile when said second electrically operated flow distribution mechanism is in said second position by redirecting said compressed gas away from said projectile loading mechanism; and

C. said third electrically operated pneumatic flow distribution mechanism is actuated by said timing circuit from said first position to said second position to direct said compressed gas from said first chamber such that;

(i) said projectile loading mechanism is disabled to prevent said projectile launching mechanism from receiving said projectile when said third electrically operated pneumatic flow distribution mechanism is in said first position;

(ii) said projectile loading mechanism is actuated to enable said projectile launching mechanism to receive said projectile when said third electrically operated pneumatic flow distribution mechanism is in said second position.

5. The pneumatically operated gun of claim 1 or 3 wherein said compressed gas filling mechanism comprises:

A. a valve adjacent to said compressed gas storage chamber having a plug and having a spring which loads said plug to shut said valve when said compressed gas filling mechanism is not actuated; and

B. a mechanical linkage having a first end passing through said compressed gas storage chamber and having a second end attached to said plug which opens said valve when said compressed gas filling mechanism is actuated to create a flow path for said compressed gas from said first chamber to said compressed gas storage chamber.

6. The pneumatically operated gun of claim 5 wherein said compressed gas releasing mechanism is comprised of a first piston which slides longitudinally within said second chamber adjacent to said compressed gas storage chamber wherein:

A. said first piston has a first end which is pressurized by said compressed gas from said first chamber to actuate said compressed gas filling mechanism wherein;

(i) said first end has a flexible seal that prevents gas leakage into said compressed gas storage chamber from said first end;

B. said first piston has a second end adjacent to said compressed gas storage chamber which is pressurized by said compressed gas from said first chamber to actuate said compressed gas releasing mechanism wherein;

(i) said second end has a flexible seal that prevents gas leakage out of said compressed gas storage chamber from said second end;

(ii) said second end of said first piston is attached to said first end of said mechanical linkage such that said compressed gas filling mechanism is actuated when said first end of said first piston is pressurized by said compressed gas from said first chamber.

7. The pneumatically operated gun of claim 1 or 3 wherein said projectile launching mechanism is comprised of a bolt which slides longitudinally within said third chamber wherein said bolt has at least one port for receiving said release of said gas from said compressed gas storage chamber to launch said projectile.

8. The pneumatically operated gun of claim 7 wherein said projectile loading mechanism is comprised of a second piston which slides longitudinally within said third chamber wherein:

A. said second piston has a first end mechanically linked to said bolt which is pressurized by said compressed gas from said first chamber to actuate said projectile loading mechanism;

B. said second piston has a second end which is pressurized by said compressed gas from said first chamber to disable said projectile loading mechanism.

9. The pneumatically operated gun of claim 1 or 3 wherein said electrically operated pneumatic flow distribution mechanisms comprise solenoid valves.

10. The pneumatically operated gun of claim 1 or 3, wherein said communication between said chambers comprises ported passageways through the interior of said body.

11. The pneumatically operated gun of claim 1 or 3, wherein said gun is operated at gas pressures from about 125 pounds per square inch to about 175 pounds per square inch.

12. The pneumatically operated gun of claim 1 or 3 further comprising a removable means for sealing said first chamber after the insertion of compressed gas into said first chamber.

13. The pneumatically operated gun of claim 1 or 3 wherein said grip further comprises:

A. a handle; and

B. a trigger attached to said handle and operably connected to said electrical switch to actuate said electrical switch.

14. The pneumatically operated gun of claim 13 wherein said grip further comprises a spring to separate said trigger from said electrical switch when said trigger is released.

3. A pneumatically operated device for launching a projectile comprising:

A. a body having a plurality of bores including;

(i) a first bore containing compressed gas;

(ii) a second bore in communication with said first bore having;

(a) a compressed gas storage chamber for storing said compressed gas;

(b) a compressed gas filling mechanism for filling said compressed gas storage chamber;

(c) a compressed gas releasing mechanism for releasing said compressed gas from said compressed gas storage chamber to fire said projectile;

(iii) a third bore in communication with said first bore and said second bore having;

(a) a projectile launching mechanism for launching said projectile;

(b) a projectile loading mechanism for in communication with a source of projectiles for loading said projectiles into said projectile launching mechanism;

B. a grip including an electrical switch;

C. an electrical control unit comprising;

(i) an electrical timing circuit electrically connected to said electrical switch for actuation thereby;

(ii) a first electrically operated pneumatic flow distribution mechanism electrically connected to said timing circuit for actuation thereby, said first distribution mechanism being positionable between;

(a) a first position in which said projectile launching mechanism is prevented from receiving said projectile;

(b) a second position which enables said projectile launching mechanism to receive said projectile;

(iii) a second electrically operated pneumatic flow distribution mechanism electrically connected to said timing circuit for actuation thereby, said second distribution mechanism being positionable between;

(a) a first position which enables said compressed gas storage chamber to be filled with said compressed gas;

(b) a second position which enables release of said compressed gas from said compressed gas storage chamber to launch said projectile; and

(iv) an electrical power source connected to said electrical switch;

wherein said first electrically operated pneumatic flow distribution mechanism is a four-way valve.

4. The pneumatically operated gun of claim 3 wherein:

A. said first electrically operated pneumatic flow distribution mechanism is actuated by said timing circuit from said first position to said second position to direct said compressed gas from said first bore such that;

(i) said projectile loading mechanism is disabled to prevent said projectile launching mechanism from receiving said projectile when said first electrically operated pneumatic flow distribution mechanism is in said first position;

(ii) said projectile loading mechanism is actuated to enable said projectile launching mechanism to receive said projectile when said first electrically operated pneumatic flow distribution mechanism is in said second position;

B. said second electrically operated pneumatic flow distribution mechanism is actuated by said timing circuit from said first position to said second position to direct said compressed gas from said first bore such that;

(i) said compressed gas filling mechanism is actuated to fill said compressed gas storage chamber when said second electrically operated pneumatic flow distribution mechanism is in said first position;

(ii) said compressed gas releasing mechanism is actuated to release said gas from said compressed gas storage chamber into said projectile launching mechanism to launch said projectile when said second electrically operated flow distribution mechanism is in said second position by redirecting said compressed gas away from said projectile loading mechanism.

15. A method for pneumatically launching a projectile from a launching device having at least first and second interconnected chambers, comprising the following steps:

A. filling said first chamber of said launching device with compressed gas having a selected pressure;

B. launching said projectile from said second chamber by releasing said compressed gas from said first chamber into said second chamber; and

C. loading a projectile into said second chamber.

16. The method of claim 15, wherein said filling step and said loading step are performed simultaneously, followed by said launching step.

17. The method of claim 15, wherein said loading step is followed by said launching step followed by said filling step.

18. The method of claim 15, 16 or 17, wherein said steps are repeated continuously.

19. The method of claim 15, wherein said selected gas pressure is between about 125 pounds per square inch and 175 pounds per square inch.