Operating system for small caliber rifles

Patent metadata

Field	Value
Publication number	US-10386137-B2
Application number	US-201715720522-A
Country	US
Kind code	B2
Filing date	Sep 29, 2017
Priority date	Sep 30, 2016
Publication date	Aug 20, 2019
Grant date	Aug 20, 2019

Abstract

A weapon system is provided. The weapon system includes a receiver and an operating group. The operating group includes a bolt at least partially housed within the receiver; an operating rod (op-rod) assembly arranged to axially translate within the bolt. The operating group also includes a carrier assembly, a bolt assembly, and a recoil assembly. The system further includes a hinge or pivot joint at a connection between the recoil assembly and the carrier assembly, a firing pin lock, an elastomeric cone interface between the bolt assembly and the receiver, a hollowed out piston, and/or tapering on the lug of the bolt assembly.

First claim

What is claimed is:

1. An operating system for a firearm, the operating system comprising:
a firing pin; and
a recoil assembly comprising:
an op-rod;
a firing pin lever attached to the op-rod, the firing pin lever configured to prevent the firing pin from moving forward to strike an ammunition primer unless a trigger is in a firing position; and
a plunger return spring configured to expand and contract along a longitudinal axis of the firearm, the plunger return spring configured to bias the firing pin lever to engage the firing pin toward a resting state.

2. The operating system of claim 1 , wherein the firing pin lever is displaced by a hammer of the firearm in response to the trigger being pulled to the firing position, thereby allowing the firing pin to move forward.

3. The operating system of claim 2 , wherein the firing pin lever is configured to rotate about a pivoting interface.

4. The operating system of claim 3 , wherein the pivoting interface is configured to absorb moment forces resulting from firing.

5. The operating system of claim 1 , wherein the plunger return spring is configured to act on a return plunger.

6. The operating system of claim 5 , wherein the return plunger is configured to move in a direction parallel to the longitudinal axis of the firearm.

Assignees

• Sig Sauer Inc

Inventors

• Steimke David Luke
• Dustin Bryan Charles
• Sakash Aaron C

Classifications

• F41A17/72

  trigger-operated, i.e. the movement of the trigger bringing a firing-pin safety into inoperative position during the firing · CPC title

• F41A3/30

  Interlocking means, e.g. locking lugs, screw threads · CPC title

• F41A3/82

  Coil spring buffers (F41A3/80 takes precedence) · CPC title

• F41A3/26 Primary

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

• F41A17/64

  Firing-pin safeties, i.e. means for preventing movement of slidably- mounted strikers (F41A17/02 - F41A17/40 take precedence) · CPC title