Automatic choke shot gun
US4713904A · kind A · utility
7Cited by
9References
2Claims
0Family size
Inventors
Key dates
| Filing date | Jun 16, 1986 |
| Grant date | Dec 22, 1987 |
| Priority date | — |
| Expiry date | Jun 16, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41A21/40
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An automatic shotgun choke is provided which is attached to the muzzle of a shotgun barrel and can be adjusted manually by a device mounted within and extending from upper portion of the choke so as to selectively produce a choked and unchoked muzzle. In a modification gas pressure from a fired shell turns fan blades within the choke to operate a choking action upon a charge as it leaves the muzzle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.