Sear mechanism for firearms
A rotational sear block isolates the rotational movement of the sear to the sear mechanism without using a rotational trigger. The isolation of the sear rotation to the sear mechanism allows for a single axis translational trigger to be used which gives the shooter the advantages of a short, crisp trigger pull without any off-axis movement. Additionally, the positive sear engagement and inherent safety of the design are achieved due to the sear being engaged and biased onto the sear block surface, disallowing unintended or accidental release.
1. A firearms sear assembly, the sear assembly comprising:
a sear housing;
a sear block disposed in the sear housing, the sear block further comprising a disconnector receiving slot;
a sear operably mounted on the sear block; the sear consisting of a monolithic piece comprising
a first lateral side;
a distal end;
a proximate end;
a cam located at the proximate end and on the first lateral side;
a ledge adjacent to the cam on the proximate end;
a bias spring attachment portion between the distal end and the proximate end;
a bias spring operably attached to the bias spring attachment portion;
a disconnector operably installed in the sear block disconnector receiving slot; the disconnector further comprising a cam;
a striker block actuator disposed in the sear block adjacent to the disconnector cam and operably interactive with a striker block; and
a striker block operably actuated by the striker block actuator.
2. The firearms sear mechanism of claim 1 , wherein the firearms comprise a pistol.
3. The firearms sear mechanism of claim 2 , wherein the pistol comprises a translational trigger to actuate the sear assembly.
4. The firearms sear mechanism of claim 3 , wherein the firearms sear assembly is rotational.
5. The firearms sear mechanism of claim 2 , wherein the pistol comprises a striker firing mechanism released by actuating the sear assembly.
6. The firearms sear mechanism of claim 2 , wherein the pistol maintains positive sear engagement.
7. The firearms sear mechanism of claim 1 , wherein the pistol comprises a translational trigger to actuate the sear assembly.
8. A firearms sear consisting of a monolithic unitary piece comprising
a first lateral side;
a distal end;
a proximate end;
a cam located at the proximate end and on the first lateral side;
a ledge adjacent to the cam on the proximate end; and
a bias spring attachment portion between the distal portion and the proximate end.
9. A firearm comprising a translational trigger and a rotational sear assembly wherein rotation of the rotational sear assembly is actuated by the translational trigger, the sear assembly further comprising a monolithic sear having a first lateral side, a distal end, a proximate end, a cam located at the proximate end and on the first lateral side, a ledge adjacent to the cam on the proximate end, and a bias sprint attachment portion between the distal end and the proximate end.
10. The Firearm of claim 9 , wherein the firearm comprises a pistol.
11. The firearm of claim 9 , further comprising a trigger yoke in mechanical communication with and between the translational trigger and the rotational sear assembly, wherein the translational trigger translates the trigger yoke to actuate the rotational sear assembly.
12. The firearm of claim 9 , further comprising a striker firing mechanism released by actuating the rotational sear assembly.