Focussing objective mechanism for telescopic rifle sights
US4072396A · kind A · utility
25Cited by
8References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 10, 1975 |
| Grant date | Feb 7, 1978 |
| Priority date | — |
| Expiry date | Jul 10, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A mechanism for focussing the objective lens assembly of a variable power telescopic rifle sight. A rotatable cam ring is used in conjunction with a coil spring which urges the lens assembly against the cam ring. A lens retainer portion of the lens assembly adjacent to the cam ring has formed thereon a camming ramp which is complimentary to a camming surface formed on the cam ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.