US 4,026,056 AGranted

Trigger release mechanism

OwnerGary W. Romaninventor

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Abstract

A trigger release mechanism is disclosed which changes the action of the factory trigger mechanism by moving the pivot point of the trigger forward through the use of an extension fork extending forwardly of the factory trigger base. In normal movement, with the factory pivot point, as the trigger is pulled rearward, the trigger actuated end of the sear is pulled downwardly, lifting the hammer engaging end of the sear to disengage the hammer and allow the hammer to fall. However, by changing this pivot point, the sear catch of the trigger actuated linkage indexes on the trigger actuated end of the sear only when the trigger is pulled backwardly. Spring tension from a spring plunger absorbs the potential energy caused by the upward movement of the trigger base. Upon release of finger pressure on the trigger, the spring loaded plunger releases kinetic energy to furnish the downward thrust to force the trigger actuated end of the sear downwardly so as to raise the hammer engagement end of said sear out of engagement with the hammer and release same.

Claims5

Dependent claims

A trigger release mechanism, for use with a firearm device, having a breech, a pull trigger, said trigger having an elongated base, a firing pin disposed on said breech, hammer means for striking said pin, an overhead sear, said sear having a hammer engaging end and a trigger actuated end and being pivotably mounted for overhead engagement of said hammer engaging end with said hammer, a trigger actuated linkage in operative relation with said pull trigger for moving the trigger actuated end of said overhead sear downwardly and simultaneously raising said hammer engaging end of said sear upwardly and out of engagement with said hammer;

the improvement in said trigger release mechanism, which comprises,
A. pivot means for said pull trigger, said pivot means being operatively connected to the front portion of said elongated base of said trigger for raising the rear portion of said trigger base upwardly and forwardly responsive to application of pressure on said trigger and for moving said trigger actuated linkage upwardly and forwardly for engagement with said trigger actuated end of said sear;
and
B. a spring-loaded plunger, mounted in operative relation with said rear portion of said elongated base of said trigger and responsive to movement of said trigger for:
1. absorbing the potential energy caused by the upward movement of said trigger base upon application of finger pressure to said trigger, and
2. for releasing kinetic energy upon release of pressure on said trigger to provide downward thrust against said trigger base and said trigger actuated linkage and to push the trigger actuated end of said sear downwardly so as to raise the hammer engaging end of said sear out of engagement with said hammer.

3 more elements

Dependencies are inferred from the claim text.