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US 8,074,632 B2Granted
Variable pneumatic sear for paintball gun
AssigneeKEE Action Sports I LLC
InventorJerrold M. Dobbins
Life of this patent
Estimating the term…
Abstract
An improved paintball gun uses a low-pressure pneumatic sear to hold the firing valve closed against the high pressure gas occupying the other side of the valve. In this manner, only one operation is required between depressing the trigger and the firing of the paintball gun because a double-acting cylinder is not required as an interface between the trigger depression and actuation of the valve. The paintball gun is also substantially faster than existing electro-pneumatic paintball guns because it uses a blow forward bolt, in which higher-pressure gas is held directly behind the bolt and has only one direction to travel during the firing of the paintball gun.
Claims33
A compressed gas gun comprising:
- a cylinder;
- a firing mechanism comprising an integrally formed piston, bolt and a valve pin slidable in the cylinder, at least a part of the valve pin received coaxially within an interior portion of the piston;
- compressed gas at a first pressure that biases the firing mechanism in a first direction;
- compressed gas at a second pressure different than the first pressure that biases the firing mechanism in a second direction, and overcomes a force exerted by the first pressure biasing the firing mechanism in the first direction so that the firing mechanism moves in the second direction;
- and
- a valve that, in response to a signal, decreases the compressed gas at the second pressure to allow the compressed gas at the first pressure to bias the firing mechanism in the first direction, which in turn releases the compressed gas at a first pressure to fire a projectile from the gun.
3 more elements
A compressed gas gun comprising:
- a cylinder comprising a piston having an effective surface area and including an integral valve pin having an effective surface area smaller than the effective surface area of the piston, the piston slidable in the cylinder from a rearward position to chamber a projectile to a forward position to fire a projectile;
- compressed gas at a first pressure configured to communicate with the surface area of the piston to bias the position in a rearward direction to selectively close a flow path;
- compressed gas at a second higher pressure configured to communicate with the surface area of the valve pin to bias the valve pin in a forward direction, the compressed gas at a first pressure and the compressed gas at a second higher pressure configured to hold the piston in a rearward ready to fire position when applied together;
- and
- a valve configured to selectively decrease the first pressure to allow the compressed gas at the second higher pressure to bias the piston in the forward direction, to open the flow path to fire a projectile from the compressed gas gun;
- and,
- a trigger for operating the valve.
4 more elements
A compressed gas gun comprising:
- a cylinder for housing pneumatic components;
- a bolt having a first effective surface area and a second effective surface area, the second surface area smaller than the first effective surface area,
- the bolt slidable within the cylinder in a rearward direction under a first pressure exerted by compressed gas in communication with the first surface area of the bolt,
- the bolt slidable within the cylinder in a forward direction under a second pressure exerted by compressed gas in communication with the second surface area of the bolt;
- the compressed gas in communication with the first surface area selectively regulated via a trigger actuated valve;
- and,
- the compressed gas in communication with the second surface area supplied continually from a source of compressed gas;
- wherein the bolt is configured to open a flow path to fire a paintball from the gun by the compressed gas when the bolt moves to a forward position.
5 more elements
A compressed gas gun comprising:
- a cylinder for housing pneumatic components;
- a bolt having an integrally formed bolt pin received coaxially within a passage in the bolt, the bolt slidable within the cylinder in a rearward direction under a first pressure exerted by compressed gas in communication with a forward portion of the cylinder, the bolt slidable within the cylinder in a forward direction under a second pressure exerted by compressed gas in communication with a rearward portion of the cylinder;
- a cylindrical valve housing arranged in the cylinder between the rearward portion of the cylinder and the forward portion of the cylinder, the valve housing adapted to coaxially receive a rearward portion of the bolt pin when the bolt is biased in a rearward direction;
- wherein the pin is configured to open a flow path through the valve housing when the pin moves to a position forward the valve housing.
1 more element
Dependencies are inferred from the claim text.