IP Library Granted Patent US 8,683,729
Granted Patent B2
US 8,683,729 · App. 13/453,395 · Granted Apr 1, 2014

Ambidextrous thumb safety assembly

Inventor: Chris Bova (Barrington, NH)
Assignee: Sig Sauer, Inc.
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Quick Facts
Patent No.
US 8,683,729
App. No.
13/453,395
Granted
Apr 1, 2014
Kind
B2
Abstract

An ambidextrous thumb safety assembly, configured for use in a firearm, includes a first lever assembly for positioning on a first side of the firearm, a second lever assembly for positioning on a second side of the firearm, and a monolithic shaft assembly for coupling the first lever assembly and the second lever assembly. The monolithic shaft assembly includes a first support portion configured to rotatably engage a first portion of a frame of the firearm, a second support portion configured to rotatably engage a second portion of the frame of the firearm, and a control portion configured to selectively prohibit operation of a trigger mechanism of the firearm.

Claims (48)

1. An ambidextrous thumb safety assembly configured for use in a firearm comprising:

a first lever assembly for positioning on a first side of the firearm;

a second lever assembly for positioning on a second side of the firearm; and

a monolithic shaft assembly for coupling the first lever assembly and the second lever assembly, the monolithic shaft assembly including:

a first support portion configured to rotatably engage a first portion of a frame of the firearm,

a second support portion configured to rotatably engage a second portion of the frame of the firearm

a control portion configured to selectively prohibit operation of a trigger mechanism of the firearm, wherein the first support portion and the second support portion are positioned on opposite sides of the control portion; and

a trough cut through the monolithic shaft assembly, wherein the trough provides clearance through which a hammer protrusion passes when the ambidextrous thumb safety assembly is disengaged.

2. The ambidextrous thumb safety assembly of claim 1 wherein the monolithic shaft assembly is a portion of one of the first and second lever assemblies.

3. The ambidextrous thumb safety assembly of claim 1 wherein the monolithic shaft assembly is configured to releasably engage one of the first and second lever assemblies.

4. The ambidextrous thumb safety assembly of claim 1 wherein the monolithic shaft assembly includes a protrusion and at least one of the first and second lever assemblies includes a recess configured to receive the protrusion.

5. The ambidextrous thumb safety assembly of claim 4 wherein the protrusion is a bowtie-shaped protrusion and the recess is a bowtie-shaped recess configured to receive the bowtie-shaped protrusion.

6. The ambidextrous thumb safety assembly of claim 1 wherein first and second support portions are positioned on opposite sides of the control portion.

7. The ambidextrous thumb safety assembly of claim 1 wherein the trigger mechanism of the firearm includes a hammer assembly and the control portion of the monolithic shaft assembly is configured to selectively prohibit operation of the hammer assembly.

8. The ambidextrous thumb safety assembly of claim 7 wherein the control portion of the monolithic shaft assembly is configured to selectively lock the hammer assembly in a cocked position.

9. The ambidextrous thumb safety assembly of claim 7 wherein the control portion of the monolithic shaft assembly is configured to selectively lock the hammer assembly in an uncocked position.

10. The ambidextrous thumb safety assembly of claim 7 wherein the trigger mechanism of the firearm includes a linkage assembly for coupling a trigger assembly to the hammer assembly included within the firearm.

11. The ambidextrous thumb safety assembly of claim 10 wherein the linkage assembly includes a trigger bar and a sear assembly.

12. The ambidextrous thumb safety assembly of claim 11 wherein the control portion of the monolithic shaft assembly is configured to selectively prohibit operation of the sear assembly.

13. The ambidextrous thumb safety assembly of claim 1 wherein the firearm is a handgun.

14. A firearm comprising:

a trigger mechanism including:

a hammer assembly, and

a linkage assembly for coupling a trigger assembly to the hammer assembly; and

an ambidextrous thumb safety assembly including:

a first lever assembly for positioning on a first side of the firearm;

a second lever assembly for positioning on a second side of the firearm; and

a monolithic shaft assembly for coupling the first lever assembly and the second lever assembly, the monolithic shaft assembly including:

a first support portion configured to rotatably engage a first portion of a frame of the firearm,

a second support portion configured to rotatably engage a second portion of the frame of the firearm, and

a control portion configured to selectively prohibit operation of the trigger mechanism of the firearm wherein the first support portion and the second support portion are positioned on opposite sides of the control portion;

a trough, the trough cut through the monolithic shaft assembly, wherein the trough provides clearance through which a hammer protrusion passes when the ambidextrous thumb safety assembly is disengaged.

15. The ambidextrous thumb safety assembly of claim 14 wherein the monolithic shaft assembly is a portion of one of the first and second lever assemblies.

16. The ambidextrous thumb safety assembly of claim 14 wherein the control portion of the monolithic shaft assembly is configured to selectively prohibit operation of the hammer assembly.

17. The ambidextrous thumb safety assembly of claim 16 wherein the control portion of the monolithic shaft assembly is configured to selectively lock the hammer assembly in a cocked position.

18. The ambidextrous thumb safety assembly of claim 16 wherein the control portion of the monolithic shaft assembly is configured to selectively lock the hammer assembly in an uncocked position.

19. An ambidextrous thumb safety assembly configured for use in a firearm comprising:

a first lever assembly for positioning on a first side of the firearm;

a second lever assembly for positioning on a second side of the firearm; and

a monolithic shaft assembly for coupling the first lever assembly and the second lever assembly, the monolithic shaft assembly including:

a first support portion configured to rotatably engage a first portion of a frame of the firearm,

a second support portion configured to rotatably engage a second portion of the frame of the firearm, and

a control portion configured to selectively prohibit operation of a hammer assembly of the firearm, wherein the first support portion and the second support portion are positioned on opposite sides of the control portion;

a trough, the trough cut through the monolithic shaft assembly, wherein the trough provides clearance through which a hammer protrusion passes when the ambidextrous thumb safety assembly is disengaged.

20. The ambidextrous thumb safety assembly of claim 19 wherein the monolithic shaft assembly is a portion of one of the first and second lever assemblies.

21. The ambidextrous thumb safety assembly of claim 19 wherein the trigger mechanism of the firearm includes a hammer assembly and the control portion of the monolithic shaft assembly is configured to selectively prohibit operation of the hammer assembly.

22. The ambidextrous thumb safety assembly of claim 21 wherein the control portion of the monolithic shaft assembly is configured to selectively lock the hammer assembly in a cocked position.

23. The ambidextrous thumb safety assembly of claim 21 wherein the control portion of the monolithic shaft assembly is configured to selectively lock the hammer assembly in an uncocked position.

Assignments (3)
SECURITY INTEREST Recorded Nov 10, 2021
From: SIG SAUER INC.
To: TD BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 058097/0345 →
NOTICE OF GRANT OF SECURITY INTEREST IN PATENTS Recorded Feb 21, 2014
From: SIG SAUER INC.
To: TD BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 032323/0209 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 10, 2014
From: BOVA, CHRIS
To: SIG SAUER, INC.
Reel/Frame 031940/0545 →
Continuity (2)
Provisional Application 61478259 · Apr 22, 2011
Related Publication 20120291326A1 · Nov 22, 2012