Gas powered gun
Patent 5257614 Issued on November 2, 1993. Estimated Expiration Date: 
July 20, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 20, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 964810 3199501 3204625 3494344 3572310 3788298 Fluid pressure repeating pistol with unitary barrel and hammer assembly Gas powered gun Breech construction for air gun Patent #: 5078118 InventorApplicationNo. 916527 filed on 07/20/1992US Classes:124/73, By valve means124/74For discharge of pressure from removably mounted cartridgeExaminersPrimary: Reese, Randolph A.Assistant: Kim, Harry C. Attorney, Agent or FirmForeign Patent References
International ClassF41B 011/06AbstractWhat is provided is an improved gas-powered gun for projecting lightweight projectiles, such as paint balls. Like guns presently available on the market, the gun of the invention has a handle, a barrel, a projectile chamber within the barrel, a bolt disposed within the barrel immediately rearward of the projectile chamber, a hammer disposed immediately rearward of the bolt, a spring for propelling the hammer rearwardly during the firing operation, a pressure chamber which retains a discreet amount of a pressurized gas and a valve for releasing the pressurized gas to the projectile chamber upon impact from the hammer. The improved gun of the invention differs from the gun presently on the market by the fact that the improved gun has a guide tube attached to the hammer. The guide tube extends into a bore within the bolt and is dimensioned in close tolerance to the bore within the bolt. The guide tube thereby is capable of sliding smoothly within the bore of the bolt to provide support for the hammer as it is propelled rearwardly during the firing operation.Field of SearchFor discharge of pressure from removably mounted cartridgeBy valve means For continual projection of successive projectiles (e.g., for "rapid fire", etc.) With check valve permitting recharge, and control valve for discharge, of fluid pressure With control for discharge of fluid pressure Opened by fluid pressure-actuated means Opened by spring-actuated means FLUID PRESSURE By plunger moving within cylinder By spring-driven plunger Within cylinder having diameter larger than projector barrel | |
