Pump Action Rifle and Action Lock Mechanism
AssigneeSmith & Wesson Corp.
InventorDavid S. Findlay
Life of this patent
Estimating the term…
Abstract
An action lock for a Modern Sporting Rifle pump action firearm is pivotably mounted within the lower receiver of the rifle and has a stop surface that engages a contact surface on the bolt carrier when the bolt carrier is in battery. A cam on the hammer or the trigger engages a cam surface on the action lock when the hammer is released by a pull of the trigger. Cam action rotates the action lock out of engagement with the bolt carrier, unlocking it and allowing the fore end grip to be pumped to cycle the action and extract and eject the spent casing and strip and chamber a new round.
Claims28
An action lock useable in a firearm having a movable bolt carrier, a hammer pivotably mounted on said firearm, a cam positioned on said hammer, a trigger pivotably mounted on said firearm and operatively associated with said hammer, said action lock comprising:
- a body mountable on said firearm and movable between a first and a second position, said body having a stop surface engageable with said bolt carrier, to prevent motion thereof, when said body is in said first position, said stop surface being disengaged from said bolt carrier, to permit motion thereof, when said body is in said second position, said body further comprising a cam surface engageable with said cam on said hammer, said cam acting on said cam surface when said hammer pivots from a cocked position to a released position to move said body from said first position to said second position, thereby permitting motion of said bolt carrier, a tab projecting outwardly away from said body, said tab providing for manually moving said action lock between said first and second positions.
(canceled)
A firearm, comprising:
- a bolt carrier movable between an open position and a battery position;
- a manually movable fore end grip attached to said bolt carrier;
- a hammer pivotably mounted on said firearm;
- a cam positioned on said hammer;
- a trigger pivotably mounted on said firearm and operatively associated with said hammer;
- an action lock comprising a body mounted on said firearm and movable between a first and a second position, said body having a stop surface engageable with said bolt carrier, to prevent motion thereof, when said body is in said first position, said stop surface being disengaged from said bolt carrier, to permit motion thereof, when said body is in said second position, said body further comprising a cam surface engageable with said cam on said hammer, said cam acting on said cam surface when said hammer pivots from a cocked position to a released position to move said body from said first position to said second position, thereby permitting motion of said bolt carrier by said fore end grip.
28-70. (canceled)
Dependencies are inferred from the claim text.