Friction member for brake mechanism in camera shutter
US5543880A · kind A · utility
5Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1995 |
| Grant date | Aug 6, 1996 |
| Priority date | — |
| Expiry date | Jun 2, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B9/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A friction member for a brake mechanism in a camera shutter is comprised of a layer-laminated body which is formed by laminating a plurality of resin layers each reinforced with carbon fibers aligned one-directionally in such a manner that the directions of the carbon fibers are crossing, for generating a frictional force to brake a member to be braked by coming in contact with the member to be braked. The thickness of the layer-laminated body is 50 .mu.m to 200 .mu.m, and the surface resin layer of the layer-laminated body contains 35 to 75 wt % of the carbon fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.