Motor driven shutter
US5045873A · kind A · utility
5Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 1990 |
| Grant date | Sep 3, 1991 |
| Priority date | — |
| Expiry date | May 11, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B9/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A mechanism for opening and closing a shutter includes a rotatably mounted drive member, a motor operable to rotatably drive the drive member, an actuator for opening and closing the shutter when the drive member is rotated, and an operating arrangement between the drive member and the actuator operable to provide a gear driving operating relationship between the drive member and the actuator during one part rotation of the drive member and a non-driving relationship during another part rotation of the drive member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.