Double action, hammer trigger mechanism for a firearm

Details Double action, hammer trigger mechanism for a firearm Double action, hammer trigger mechanism for a firearm

2007-08-21

2007-08-21

Clement, Michelle (Department: 3641)

Firearms

Firing mechanism

Rearward sliding breech bolt

C089S147000

Reexamination Certificate

active

10527859

ABSTRACT:
Double action, hammer trigger mechanism for a semi-automatic firearm (10) with a spring loaded slide (12) having a cam surface (28), a pivoting sear (46) to hold the hammer (20) in a cocked position and a transfer bar (26) connected to a pivot pin (54) on the trigger (24). The transfer bar has a cam finger (30) to move the transfer bar down when the slide moves in a rearward direction during firing. When the sear is holding the hammer cocked, a second finger (62) on the transfer bar is arranged to engage a single action let-off pin (56) on the sear and pivot the sear when the trigger is pulled so as to release the hammer. The cam finger also moves the transfer bar down when the slide is stationary and the trigger is operated. The transfer bar has a notch (60) receiving a double action let-off pin (58) on the hammer to cause the transfer bar to pivot the hammer in a cocking direction as the trigger is pulled. This motion moves the transfer bar notch away from the double action let-off pin to release the hammer when the trigger is pulled to a double action let-off position before the hammer reaches the cocked position.

REFERENCES:
patent: 3722358 (1973-03-01), Seecamp
patent: 4275640 (1981-06-01), Wilhelm
patent: 4428138 (1984-01-01), Seecamp
patent: 5216195 (1993-06-01), Tuma
patent: 5386659 (1995-02-01), Vaid et al.
patent: 5400537 (1995-03-01), Meller et al.
patent: 5426880 (1995-06-01), Ruger et al.
patent: 6457271 (2002-10-01), Vaid et al.
patent: 2001/0042332 (2001-11-01), Gering et al.
patent: 0 550 238 (1993-07-01), None

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