Cam follower for variable power scopes
US4172634A · kind A · utility
17Cited by
3References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 28, 1977 |
| Grant date | Oct 30, 1979 |
| Priority date | — |
| Expiry date | Sep 28, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A mechanism for varying the power of a telescopic gun sight wherein the erector lenses are moved longitudinally of the sight. A cam sleeve is used in combination with plastic cam followers. Screws are passed through the cam followers and threaded into the erector lens cells to bias runners formed on the lens cells against the inside surface of the erector lens tube thereby loosening manufacturing tolerance requirements while providing smoother and more accurate lens movement and power change.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.