Optical disk drive including dust-proofing annular projections
US5260929A · kind A · utility
1Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 1991 |
| Grant date | Nov 9, 1993 |
| Priority date | — |
| Expiry date | May 6, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/08582
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical disk drive of the type having a fixed optical unit having a light transmitting hole from which a laser beam is emitted, and a movable head having a light receiving hole from which the laser beam is received, wherein the respective outer edges of the light emitting and receiving holes are surrounded by a pair of annular projections. The annular projections are engageable with each other to provide a seal therebetween when the head is displaced toward the fixed optical unit. The annular projections are preferably made of a cushioning material in which instance they also serve as a cushioning or shock-absorbing member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.