Automatic or semi-automatic firearm
US4019423A · kind A · utility
40Cited by
4References
7Claims
0Family size
Inventor
Key dates
| Filing date | Oct 19, 1970 |
| Grant date | Apr 26, 1977 |
| Priority date | — |
| Expiry date | Oct 19, 1990 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41A21/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A stable automatic or semi-automatic firearm having a differential recoil system in which an open bolt has a designed mass and closing velocity to impact and drive a reciprocating barrel forwardly without rebound and remain locked to the barrel during the period when there is high firing pressure in the barrel. Since the bolt supports the cartridge during the time of high pressure, the cartridge is prevented from prematurely being extracted and rupturing; and since recoil momentum is utilized in arresting and returning the bolt, stability of the firearm is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.