JPS583139A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Driving mechanism of optical head for optical disc
Assignee: Toshiba Corp
•
Filing: 1981-06-29
•
Granted: —
•
Expires: 2001-06-29
Abstract
Abstract PURPOSE:To obtain high magnetic flux density, by providing a moving coil driving an optical head in a magnetic gap with a magnet. CONSTITUTION:A magnetic gap 21 of a magentic circuit 22 is provided with driving coils 25-27 driving an optical head together with a moving magnet 23. Thus, the magnetic flux density interlinking through the driving coils 25-27 is increased, and when the optical head is moved, the fluctuation of the magnetic flux density interlinking with the driving coils 25-27 is less.
Inventors
- 👤 Seiichi Ogoshi
- 👤 誠一 大越
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-08 08:26
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/08; G11B7/085; G11B7/0857; G11B7/08582
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.