Trigger mechanism for a firearm

Patent metadata

Field	Value
Publication number	US-9638485-B2
Application number	US-201514723830-A
Country	US
Kind code	B2
Filing date	May 28, 2015
Priority date	Dec 19, 2014
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

A trigger mechanism for a firearm provides modified and/or adjustable trigger pull length, reduced sear pressure, reduced reset trigger slap, and/or improved engagement of the trigger safety.

First claim

What is claimed is:

1. A trigger mechanism for a firearm receiver, the trigger mechanism comprising:
a bow having a forward most position and rearward most position in the firearm receiver;
a hammer; and
a disconnector having a disconnector sear, the disconnector sear comprising a first hammer engagement edge and a recessed underside defined by a hammer engagement surface extending from the first hammer engagement edge, the recessed underside partially projecting upwardly from the hammer engagement surface;
a trigger element having a receiver interface, wherein the receiver interface at least partially determines an angle between the forward most position of the bow and the rearward most position of the bow; and
a safety mechanism, wherein the trigger element further includes a cavity defined by a housing, and wherein the cavity is aligned with the safety mechanism;
wherein the safety mechanism includes a safety lever and a safety adjustor insert, wherein the cavity of the trigger element houses the safety adjustor insert, the safety adjustor insert extending above an upper limit of the cavity, and wherein the safety adjustor insert is configured to engage the safety lever.

2. The trigger mechanism of claim 1 , wherein the receiver interface of the trigger element is adjustable, and wherein adjusting the receiver interface changes the angle between the forward most position of the bow and the rearward most position of the bow.

3. The trigger mechanism of claim 1 , wherein the receiver interface of the trigger element prevents the angle between the forward most position and the rearward most position of the bow from exceeding about 10 degrees.

4. The trigger mechanism of claim 1 , wherein the receiver interface of the trigger element prevents the angle between the forward most position and the rearward most position of the bow from exceeding about 5 degrees.

5. The trigger mechanism of claim 1 , wherein the distance by which the safety adjustor insert extends above the upper limit of the cavity is adjustable.

6. The trigger mechanism of claim 1 , wherein the disconnector has a rounded forward most edge.

7. The trigger mechanism of claim 1 , wherein the hammer includes a trigger sear engagement surface, and wherein the trigger element also includes a sear arm and a trigger sear extending from the sear arm, the trigger sear having a second hammer engagement surface and a second hammer engagement edge at the rear of the hammer engagement surface, wherein the second hammer engagement surface is configured to engage at least a portion of the trigger sear engagement surface of the hammer.

8. The trigger mechanism of claim 7 , wherein the second hammer engagement surface of the trigger sear has a width that is greater than a width of the receiver interface of the trigger element.

9. The trigger mechanism of claim 8 , wherein the width of the second hammer engagement surface of the trigger sear exceeds the width of the receiver interface by at least about 1 mm.

10. The trigger mechanism of claim 7 , wherein the hammer is configured to slide off the second hammer engagement surface of the trigger sear to fire a firearm, and wherein a distance by which the hammer slides off the second hammer engagement surface to fire the firearm does not exceed about 1.5 mm.

11. The trigger mechanism of claim 1 , wherein the trigger element further includes a trigger sear comprising a second hammer engagement edge, and wherein a shortest vertical distance between the first hammer engagement edge of the disconnector sear and the second hammer engagement edge of the trigger sear does not exceed about 3 mm.

12. The trigger mechanism of claim 1 , wherein the safety adjustor insert is a pin or a screw.

13. A trigger mechanism for a firearm receiver, the trigger mechanism comprising:
a bow having a forward most position and rearward most position in the firearm receiver;
a hammer;
a disconnector having a disconnector sear, the disconnector sear comprising a first hammer engagement edge;
a trigger element having a receiver interface, wherein the receiver interface at least partially determines an angle between the forward most position of the bow and the rearward most position of the bow; and
a safety mechanism, wherein the trigger element further includes a cavity defined by a housing, and wherein the cavity is aligned with the safety mechanism;
wherein the safety mechanism includes a safety lever and a safety adjustor insert, wherein the cavity of the trigger element houses the safety adjustor insert, the safety adjustor insert extending above an upper limit of the cavity, and wherein the safety adjustor insert is configured to engage the safety lever.

14. A firearm comprising the trigger mechanism of claim 1 .

15. A firearm comprising the trigger mechanism of claim 13 .

Assignees

• Whg Properties Llc

Inventors

• Geissele William H

Classifications

• F41A19/16

  Adjustable firing mechanisms; Trigger mechanisms with adjustable trigger pull (F41A19/17 takes precedence) · CPC title

• F41A19/14

  Hammers, i.e. pivotably-mounted striker elements; Hammer mountings · CPC title

• F41A19/12

  Sears; Sear mountings · CPC title

• F41A17/46

  Trigger safeties, i.e. means for preventing trigger movement (F41A17/02 - F41A17/40 take precedence) · CPC title

• F41A19/10 Primary

  Triggers; Trigger mountings · CPC title