Firearm having a relief valve
US3990348A · kind A · utility
46Cited by
2References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 26, 1974 |
| Grant date | Nov 9, 1976 |
| Priority date | — |
| Expiry date | Apr 26, 1994 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41A5/28
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A firearm such as a semiautomatic rifle having a gas cylinder which receives gas under pressure upon firing of a round in order to move a gas piston which operates components of the firearm. A relief valve structure communicates with the interior of the gas cylinder for automatically responding by inertia to recoil of the firearm in order to relieve excess gas pressure in the cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.