Multi-stage trigger mechanism for rifle

• US 9,644,913 B2
• Filed: 04/17/2015
• Issued: 05/09/2017
• Est. Priority Date: 04/17/2015
• Status: Active Grant

• Current Assignee: CadEquip, Inc.
• Original Assignee: CadEquip, Inc.
• Inventors: Dextraze, Serge
• Primary Examiner(s): CLEMENT, MICHELLE RENEE
• Application Number:
  US14/690,357
• Publication Number:
  US 20160305730A1
• Time in Patent Office: 753 Days
• Field of Search: 42 6901
• CPC Class Codes: F41A 19/10 Triggers; Trigger mountings
• CPC Class Codes: F41A 19/12 Sears; Sear mountings

Abstract

A trigger mechanism for a firearm is presented. The trigger mechanism has a trigger housing, a sear, a sear block and a trigger lever. Actuation of the trigger causes the trigger lever to rotate and eventually come into contact and move the sear block, which permits the sear to fall and permit the actuation of the firing mechanism.

Claims

1. A trigger assembly for cocking and releasing a firing mechanism of a firearm, the trigger assembly having a trigger and comprising:

a trigger housing having a front, back, top, and bottom, the trigger housing comprising two spaced side plate elements mountable below the firing mechanism and a trigger assembly body therebetween a portion of the two spaced vertical plate elements;

a sear pivotally mounted between the plate elements and releasably engagable with a portion of the firing mechanism and moveable between a first position wherein the sear secures the firing mechanism in a cocked position and a second position wherein the sear permits the firing mechanism to be released;

a sear block pivotally mounted between the plate elements and having a distal portion releasably engageable with a portion of the sear, the sear block comprising at least one tab extending therefrom a side face of the sear block; and

a trigger lever pivotally mounted between the plate elements adjacent the sear block in side-by-side relation, wherein a proximal portion of the trigger lever is connected with a portion of the trigger, and wherein the trigger lever and the sear block have a pivot point that is substantially the same, the trigger lever having a distal portion that extends upwardly a predetermined distance less than the distal portion of the sear block;

wherein, actuation of the trigger causes the trigger lever to rotate forward toward the at least one tab of the sear block, and wherein further actuation of the trigger causes the trigger lever to engage the at least one tab and move the sear block forward and out of engagement with the sear, which in turn permits the sear to move from the first position to the second position.

2. The trigger assembly of claim 1, wherein a portion of the distal portion of the trigger lever is positioned rearward of the distal portion of the sear block.

3. The trigger assembly of claim 2, wherein a portion of the distal portion of the trigger lever is positioned about between about 0.040″

and about 0.085″

more rearward than the sear block.

4. The trigger assembly of claim 3, wherein a portion of the distal portion of the trigger lever is positioned about between about 0.050″

and about 0.065″

more rearward than the sear block.

5. The trigger assembly of claim 4, wherein a portion of the distal portion of the trigger lever is positioned about 0.055″

more rearward than the sear block.

6. The trigger assembly of claim 1, an adjustment mechanism attached to the trigger assembly body, the adjustment mechanism engageable with a portion of the sear block to adjust the sear block in the rearward-forward direction.

7. The trigger assembly of claim 1, further comprising a trigger lever bias element in engagement with the trigger lever and exert a force on the trigger lever in the rearward direction to resist movement of the trigger lever in the forward direct.

8. The trigger assembly of claim 7, further comprising a trigger lever set screw positioned within a portion of the trigger assembly body and in engagement with the trigger lever bias element to adjust the force exerted on the trigger lever.

9. The trigger assembly of claim 7, wherein the trigger lever bias element is a spring.

10. The trigger assembly of claim 1, further comprising a sear block bias element in engagement with the sear block and exert a force on the sear block in the rearward direction to resist movement of the sear block in the forward direct.

11. The trigger assembly of claim 10, further comprising a sear block set screw positioned within a portion of the trigger assembly body and in engagement with the sear block bias element to adjust the force exerted on the sear block.

12. The trigger assembly of claim 10, wherein the sear block bias element is a spring.

13. The trigger assembly of claim 1, wherein the predetermined distance is between about 0.007″

and about 0.025″

.

14. The trigger assembly of claim 13, wherein the predetermined distance is between about 0.01″

and about 0.02″

.

15. The trigger assembly of claim 14, wherein the predetermined distance is about 0.015″

.

16. A firearm, comprising:

a frame;

a barrel attached to the frame;

a firing mechanism having a firing mechanism; and

a trigger mechanism, comprising;

a trigger housing having a front, back, top, and bottom, the trigger housing comprising two spaced side plate elements mountable below the firing mechanism and a trigger assembly body therebetween a portion of the two spaced vertical plate elements;

a sear pivotally mounted between the plate elements and releasably engagable with a portion of the firing mechanism and moveable between a first position wherein the sear secures the firing mechanism in a cocked position and a second position wherein the sear permits the firing mechanism to be released;

a sear block pivotally mounted between the plate elements and having a distal portion releasably engageable with a portion of the sear, the sear block comprising at least one tab extending therefrom a side face of the sear block; and

a trigger lever pivotally mounted between the plate elements adjacent the sear block in side-by-side relation, wherein a proximal portion of the trigger lever is connected with a portion of the trigger, and wherein the trigger lever and the sear block have a pivot point that is substantially the same, the trigger lever having a distal portion that extends upwardly a predetermined distance less than the distal portion of the sear block;

wherein, actuation of the trigger causes the trigger lever to rotate forward toward the at least one tab of the sear block, and wherein further actuation of the trigger causes the trigger lever to engage the at least one tab and move the sear block forward and out of engagement with the sear, which in turn permits the sear to move from the first position to the second position.

17. The firearm of claim 16, wherein a portion of the distal portion of the trigger lever is positioned rearward of the distal portion of the sear block.

18. The firearm of claim 17, wherein a portion of the distal portion of the trigger lever is positioned about between about 0.040″

and about 0.085″

more rearward than the sear block.

19. The firearm of claim 18, wherein a portion of the distal portion of the trigger lever is positioned about between about 0.050″

and about 0.065″

more rearward than the sear block.

20. The firearm of claim 19, wherein a portion of the distal portion of the trigger lever is positioned about 0.055″

more rearward than the sear block.

21. The firearm of claim 16, an adjustment mechanism attached to the trigger assembly body, the adjustment mechanism engageable with a portion of the sear block to adjust the sear block in the rearward-forward direction.

22. The firearm of claim 16, further comprising a trigger lever bias element in engagement with the trigger lever and exert a force on the trigger lever in the rearward direction to resist movement of the trigger lever in the forward direct.

23. The firearm of claim 22, further comprising a trigger lever set screw positioned within a portion of the trigger assembly body and in engagement with the trigger lever bias element to adjust the force exerted on the trigger lever.

24. The firearm of claim 22, wherein the trigger lever bias element is a spring.

25. The firearm of claim 16, further comprising a sear block bias element in engagement with the sear block and exert a force on the sear block in the rearward direction to resist movement of the sear block in the forward direct.

26. The firearm of claim 25, further comprising a sear block set screw positioned within a portion of the trigger assembly body and in engagement with the sear block bias element to adjust the force exerted on the sear block.

27. The firearm of claim 25, wherein the sear block bias element is a spring.

28. The firearm of claim 16, wherein the predetermined distance is between about 0.007″

and about 0.025″

.

29. The firearm of claim 28, wherein the predetermined distance is between about 0.01″

and about 0.02″

.

30. The firearm of claim 29, wherein the predetermined distance is about 0.015″

.