Automatic or semi-automatic firearm
US4448109A · kind A · utility
Inventor
Key dates
| Filing date | Oct 13, 1981 |
| Grant date | May 15, 1984 |
| Priority date | — |
| Expiry date | Oct 13, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41A19/46
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A firearm including a basic action system having differential recoil, blow-back operation with moving barrel and a firing mechanism for use in conjunction with the basic action system of the invention or any other type of system operable to fire from a closed-bolt position and an open-bolt position. The basic action system utilizes a single spring which positively positions the bolt and barrel for semi-automatic, closed-bolt firing, while also providing the necessary spring and positioning action for open-bolt, differential recoil, blow-back operation. The firing mechanism of the invention provides for semi-automatic fire from the closed-bolt position, and for full automatic fire from the open bolt position, with a selector to permit selection by the gunner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.