MULTI-STAGE TRIGGER MECHANISM FOR FIREARM

• US 20170191776A1
• Filed: 01/20/2017
• Published: 07/06/2017
• Est. Priority Date: 04/17/2015
• Status: Active Grant

• Current Assignee: CadEquip, Inc.
• Original Assignee: CadEquip, Inc.
• Inventors: Dextraze, Serge
• Granted Patent: US 10,578,385 B2
• Time in Patent Office: Days
• CPC Class Codes: F41A 19/10 Triggers; Trigger mountings
• CPC Class Codes: F41A 19/12 Sears; Sear mountings
• CPC Class Codes: F41A 19/16 Adjustable firing mechanisms; Trigger mechanisms with adjustable trigger pull F41A19/17 takes precedence

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 permits the actuation of the firing mechanism. The trigger lever may be pivotally secured to the housing at a first pivot and the sear block is pivotally secured to the housing at a second pivot. The first and second pivots may be spaced apart from each other or coincident.

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 at a sear block pivot and having a distal portion releasably engageable with a portion of the sear; and

, a trigger lever configured to engage a portion of the sear block, wherein the trigger lever is pivotally mounted between the plate elements adjacent the sear block at a trigger lever pivot;

wherein, actuation of the trigger causes the trigger lever to rotate about the trigger lever pivot so that the trigger lever operably engages a portion of the sear block, causing the sear block to rotate about the sear block pivot and urging the distal portion of the sear block out of engagement with the sear, thereby urging the sear to move from the first position to the second position.

2. The trigger assembly of claim 1, wherein the trigger lever pivot and sear block pivot are spaced apart from each other.

3. The trigger assembly of claim 1, further including an adjustment mechanism attached to the trigger assembly body, the adjustment mechanism engageable with a portion of the sear block to adjust the position of the sear block relative to the trigger assembly body.

4. The trigger assembly of claim 1, wherein the trigger lever pivot and the sear block pivot are substantially parallel with each other.

5. The trigger assembly of claim 4, wherein the trigger lever comprises a protruding tab extending from the trigger lever.

6. The trigger assembly of claim 5, wherein the protruding tab is spaced apart from the trigger lever pivot a predetermined distance.

7. The trigger assembly of claim 5, wherein the protruding tab has a rounded outer surface for operably engaging a portion of the sear block.

8. The trigger assembly of claim 1, wherein the trigger lever pivot and the sear block pivot are coincident.

9. The trigger assembly of claim 8, wherein the trigger lever comprises a protruding tab positioned rearward of the distal portion of the sear block.

10. The trigger assembly of claim 1, wherein, actuation of the trigger causes the trigger lever to rotate about the trigger lever pivot in a first rotational direction and the sear block to rotate about the sear block pivot in the first rotational direction.

11. The trigger assembly of claim 1, wherein rotation of the sear block in the first direction moves the distal portion of the sear block out of engagement with the sear, thereby urging the sear to move from the first position to the second position in the first rotational direction.

12. 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 at a sear block pivot and having a distal portion releasably engageable with a portion of the sear; and

,

a trigger lever configured to engage a portion of the sear block, wherein the trigger lever is pivotally mounted between the plate elements adjacent the sear block at a trigger lever pivot;

wherein, actuation of the trigger causes the trigger lever to rotate about the trigger lever pivot so that the trigger lever operably engages a portion of the sear block causing the sear block to rotate about the sear block pivot and urging the distal portion of the sear block out of engagement with the sear thereby urging the sear to move from the first position to the second position.

13. The trigger assembly of claim 12, wherein the trigger lever pivot and sear block pivot are spaced apart from each other.

14. The trigger assembly of claim 13, further including an adjustment mechanism attached to the trigger assembly body, the adjustment mechanism engageable with a portion of the sear block to adjust the position of the sear block relative to the trigger assembly body.

15. The trigger assembly of claim 12, wherein the trigger lever pivot and the sear block pivot are parallel with each other.

16. The trigger assembly of claim 15, wherein the trigger lever comprises a protruding tab extending from the trigger lever.

17. The trigger assembly of claim 16, wherein the protruding tab is spaced apart from the trigger lever pivot a predetermined distance.

18. The trigger assembly of claim 16, wherein the protruding tab has a rounded outer surface for operably engaging a portion of the sear block.

19. The trigger assembly of claim 12, wherein the trigger lever pivot and the sear block pivot are coincident.

20. The trigger assembly of claim 19, wherein the trigger lever comprises a protruding tab positioned rearward of the distal portion of the sear block.