Firing pin lock

Patent metadata

Field	Value
Publication number	US-11913740-B2
Application number	US-202217950456-A
Country	US
Kind code	B2
Filing date	Sep 22, 2022
Priority date	Sep 24, 2021
Publication date	Feb 27, 2024
Grant date	Feb 27, 2024

Abstract

A firing pin lock for firearms is provided. The firing pin lock is a single piece of resilient metal that includes a pocket for receiving the head of the firing pin to prevent inadvertent discharge of the firearm. The firing pin lock can be mounted laterally in the bolt carrier group and is deflected outwardly by the action of the hammer.

First claim

What is claimed is:

1. A firearm comprising:
a bolt carrier group including a bolt carrier and a firing pin; and
a firing pin lock comprising a leaf spring, the leaf spring defining a pocket, the pocket configured and arranged to engage a head of the firing pin when an end of the leaf spring is in compression against the firing pin.

2. The firearm of claim 1 wherein the leaf spring has a length and a width, the length greater than the width and wherein the leaf spring is oriented in relation to the firing pin at an angle that is closer to parallel than orthogonal.

3. The firearm of claim 1 wherein the firing pin lock is mounted on a side quadrant of the bolt carrier.

4. The firearm of claim 1 comprising a retaining pin positioned to hold the firing pin lock in compression against the firing pin.

5. The firearm of claim 1 wherein the firing pin lock is held in place by a single retaining pin.

6. The firearm of claim 1 wherein a portion of the leaf spring is planar and a portion of the leaf spring is curved.

7. The firearm of claim 1 wherein the firing pin lock applies a spring force of greater than 0.2 lb and less than 2.0 lb laterally against the firing pin.

8. The firearm of claim 1 wherein the firearm is an automatic firearm.

9. The firearm of claim 1 wherein a proximal end of the leaf spring is curved outwardly from an axis of the firing pin whereas the leaf spring is deflected outwardly when struck by a hammer during a firing sequence.

10. The firearm of claim 1 wherein the pocket includes a distal surface that contacts a distal surface of a head of the firing pin to prevent forward movement of the firing pin.

11. A firing pin lock comprising:
a flexible leaf spring in mechanical communication with a firing pin, the leaf spring flexible in a horizontal axis wherein a proximal end of the leaf spring has a non-planar curved profile and the amount of curvature is greater than two thicknesses of the leaf spring material.

12. The firing pin lock of claim 11 wherein a proximal end of the leaf spring includes curvature both longitudinally and laterally.

13. The firing pin lock of claim 11 wherein a distal end of the leaf spring includes a portion of the leaf spring that is looped back on itself.

14. The firing pin lock of claim 11 wherein the proximal end of the leaf spring includes a pocket for contacting a distal surface of a head of a firing pin.

15. The firing pin lock of claim 14 wherein the pocket comprises a through hole.

16. The firing pin lock of claim 11 wherein the proximal end of the leaf spring is spoon shaped.

Assignees

• Sig Sauer Inc

Inventors

• Gagne Lucas Paul
• Sakash Aaron C
• Dustin Bryan Charles

Classifications

• F41A17/66 Primary

  automatically operated, i.e. operated by breech opening or closing movement · CPC title

• F41A19/30

  in bolt-action guns · CPC title

• F41A3/26 Primary

  semi-automatically or automatically operated, e.g. having a slidable bolt-carrier and a rotatable bolt · CPC title