Firearm operating system
US9303931B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Oct 23, 2012 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Mar 28, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41A5/24
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A firearm operating system for self-loading firearms includes a bolt body having a forward bolt bearing, a piston and an aft bolt bearing arranged around the bolt body; a bolt carrier slidingly receiving the bolt body in a longitudinally-oriented cylinder, the cylinder extending from a forward end of the bolt carrier into the bolt carrier a predetermined distance, the bolt carrier having a tubular aft carrier bearing, wherein the bolt is slidingly captured in the cylinder of the bolt carrier and borne on the two bearings of the bolt body, wherein the forward bearing of the bolt body is borne on the cylinder of the bolt carrier, wherein the aft bearing of the bolt body is borne on the aft bolt carrier bearing, wherein a gap is formed between the piston and the cylinder, and wherein the piston and the cylinder do not contact each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.