Semi-automatic revolver
US4197784A · kind A · utility
Inventor
Key dates
| Filing date | Nov 30, 1977 |
| Grant date | Apr 15, 1980 |
| Priority date | — |
| Expiry date | Nov 30, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41C3/14
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A revolver includes a mechanism for automatically cocking the hammer and indexing the cylinder after each shot by utilizing gas pressure generated after cartridge ignition. The barrel includes a gas cylinder open at the rearward end and extending forwardly of the frame. The frame includes a longitudinally extending bore aligned with the gas cylinder. A displaceable member is fitted within the gas cylinder and the frame bore and is biased to a forward position by a biasing member such as a spring. An opening in the barrel provides communication between the bore of the barrel and the gas cylinder so that increased gas pressure caused by cartridge ignition acts on the displaceable member to move it rearwardly. The displaceable member contacts the hammer to urge the hammer to a cocked position and also index the cylinder, thus readying the revolver automatically for the next shot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.