Compressed gas gun
First Claim
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1. A trigger mechanism for a compressed gas gun, comprising:
- a body member having a passage therethrough for slidably engaging a hollow, tubular valve stem passing therethrough, said body member having a first end wall contacting an end wall of a barrel of said gun, and a second end wall contacting an integral shoulder of said valve stem, said valve stem supported by a mounting block having a passage to allow said valve stem to slidingly pass therethrough and an end cap on said valve stem sealingly engaging said mounting block, said trigger mechanism including biasing means to bias said valve stem towards said barrel end wall; and
an arm member pivotably mounted to said body member adjacent said first end wall, said arm member including a cam surface at one end of said arm member and a finger grip at a second end of said arm member, a forwardmost point on said cam surface being movable from a first plane which is spaced from the plane of said body member first end wall to a second plane parallel to said body member first end wall, said cam member contacting said barrel end wall when in said second plane;
wherein said arm member pivots to contactingly engage said cam surface with said barrel end wall to drive said body member away from said barrel end wall against said biasing means, such that movement of said body member moves said shoulder of said valve stem to force said end cap out of sealing engagement with said mounting block to allow compressed gas to flow through said hollow tubular valve stem.
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Abstract
A compressed gas gun having a trigger mechanism including a body member having a passage through which a valve stem passes. A trigger arm is pivotably secured to the body member and includes a finger grip and a cam surface for bearing against a wall of the internal chamber of the gun to move the body member rearwardly upon actuation of the trigger arm. Rearward movement of the body member moves the valve stem rearward to overcome a spring force to release gas through the valve stem into the barrel of the gun to propel a projectile, such as a paint ball, arrow or harpoon.
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Citations
23 Claims
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1. A trigger mechanism for a compressed gas gun, comprising:
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a body member having a passage therethrough for slidably engaging a hollow, tubular valve stem passing therethrough, said body member having a first end wall contacting an end wall of a barrel of said gun, and a second end wall contacting an integral shoulder of said valve stem, said valve stem supported by a mounting block having a passage to allow said valve stem to slidingly pass therethrough and an end cap on said valve stem sealingly engaging said mounting block, said trigger mechanism including biasing means to bias said valve stem towards said barrel end wall; and an arm member pivotably mounted to said body member adjacent said first end wall, said arm member including a cam surface at one end of said arm member and a finger grip at a second end of said arm member, a forwardmost point on said cam surface being movable from a first plane which is spaced from the plane of said body member first end wall to a second plane parallel to said body member first end wall, said cam member contacting said barrel end wall when in said second plane; wherein said arm member pivots to contactingly engage said cam surface with said barrel end wall to drive said body member away from said barrel end wall against said biasing means, such that movement of said body member moves said shoulder of said valve stem to force said end cap out of sealing engagement with said mounting block to allow compressed gas to flow through said hollow tubular valve stem. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A trigger mechanism for a compressed gas gun, said gun including a handle, a barrel extending from said handle, a compressed gas source, and a valve means within said handle responsive to said trigger mechanism for communicating said compressed gas source with said barrel to propel a projectile therefrom, said trigger mechanism comprising:
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a body portion having a passage therethrough, said valve means passing through said passage; and a trigger arm, said trigger arm having a finger grip at a first end and a cam surface at a second end, said trigger arm being pivotably secured to said body portion; wherein application of an actuation force on said finger grip pivots said trigger arm relative to said body portion such that said cam surface contacts a boss within said handle to move said body portion and said valve means relative to said boss to momentarily and instantaneously open said valve means to allow compressed gas to flow through said valve means to said barrel to propel a projectile therefrom. - View Dependent Claims (11, 12, 13, 14)
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15. A compressed gas gun for propelling projectiles, comprising:
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a handle; a barrel extending from said handle; a compressed gas source attached to said handle; a valve mechanism incorporated within said handle for communicating said gas source with said barrel, said valve mechanism including a gas accumulation chamber, a tubular valve stem having a gas inlet adjacent said chamber and a gas outlet adjacent said barrel, a shoulder integral to said stem, an end cap on said stem at said inlet, a mounting block secured within said handle having a passage to slidably mount said stem to said handle, said block being positioned about said stem between said shoulder and said end cap, and biasing means urging said end cap into sealing engagement with said mounting block to prevent passage of compressed gas from said accumulation chamber to said inlet of said stem; and a trigger mechanism slidably mounted in said housing for actuating said valve mechanism, said trigger mechanism comprising a body member having a passage to allow said valve stem to pass therethrough, said body member having a first end wall parallel to and in abutting contact with an end wall of said barrel, and a second end wall contacting said shoulder of said valve stem, said trigger mechanism further including a trigger arm pivotably secured at a first end to said body member and having a finger grip at a second end remote from said body member and extending from said handle, said first end of said trigger arm having a cam surface for contacting said end wall of said barrel upon pivoting of said trigger arm; wherein applying actuation pressure to said finger grip pivots said trigger arm to contact said cam surface with said barrel end wall resulting in movement of said body member away from said end wall, said body member engaging said shoulder and moving said valve stem relative to said mounting block to unseat said end cap from said mounting block, allowing said compressed gas to vent from said accumulation chamber through said valve mechanism to said barrel to propel said projectile therefrom. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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Specification