Break-action firearm and trigger mechanism
AssigneeBlackpowder Products, Inc.
InventorInigo Lizarralde IBARGUREN
Life of this patent
Estimating the term…
Abstract
A firearm having a frame and a barrel pivotally mounted to the frame, and further including a locking block pivotally mounted to the frame and movable between a first position and a second position, wherein in the first position the locking block engages the barrel to prevent pivotal motion thereof; and a trigger mechanism for a firearm having a neutral center of gravity, the trigger member having a geometry that results in an equal and/or symmetric distribution of its mass relative to the pivot point of the trigger, wherein impact caused by dropping the firearm will result in substantially equal application of forces on opposed sides of the trigger member, thereby reducing the likelihood of unintended discharge of the firearm.
Claims21
A firearm comprising:
- a frame;
- a barrel pivotally mounted to the frame, the barrel having a breech end and a muzzle end;
- a trigger pivotally mounted relative to the frame about a trigger axis, the trigger comprising a proximal portion on a first side of the trigger axis and a distal portion on a second side of the trigger axis opposite the first side, and wherein the proximal portion has a weight WP and the distal portion has a weight WD, and wherein WP is approximately equal to WD;
- a locking block pivotally mounted to the frame and movable between a first position and a second position, wherein in the first position the locking block engages the barrel when closed to prevent pivotal motion thereof, and in the second position the locking block is disengaged from the barrel to allow pivotal motion of the barrel relative to the frame;
- and
- a trigger guard having a loop portion for shielding the trigger, a forward portion extending toward the muzzle end, and a rearward portion extending away from the muzzle end, the trigger guard being pivotally mounted to the frame about a guard axis located toward the rearward portion, the trigger guard having a cam surface for actuating the locking block to move between its first position and its second position upon pivotal movement of the trigger guard.
A firearm comprising:
- a frame;
- a barrel pivotally mounted to the frame;
- and
- a locking block pivotally mounted to the frame and movable between a first position and a second position, wherein in the first position the locking block engages the barrel when closed to prevent pivotal motion thereof.
A firearm comprising a trigger member pivotally mounted about a trigger axis, wherein the trigger member comprises a proximal portion on a first side of the trigger axis and a distal portion on a second side of the trigger axis opposite the first side, and wherein the proximal portion has a weight WP and the distal portion has a weight WD, and wherein WP is approximately equal to WD.
The firearm of claim 16, wherein a line drawn between the first and second centers of gravity crosses at or near the trigger axis.
A firearm comprising:
- a trigger movable between a ready position and a firing position, the trigger comprising an actuator portion for manipulation by a user, and an extension arm having a top face and a notch formed therein;
- and
- a hammer movable between a neutral position, a cocked position and a discharge position, the hammer comprising a hammer block portion and a sear surface;
- wherein the hammer block portion of the hammer engages the top face of the trigger extension arm when the trigger is in the ready position and the hammer is in the neutral position, to prevent the hammer from moving to the discharge position;
- and
- wherein the sear surface of the hammer engages the notch of the trigger extension arm when the trigger is in the ready position and the hammer is in the cocked position;
- and
- wherein the hammer is released to the discharge position when the trigger is moved to the firing position.
Dependencies are inferred from the claim text.