Information reader for disk player
US4947481A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 1988 |
| Grant date | Aug 7, 1990 |
| Priority date | — |
| Expiry date | May 4, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A carriage movable on a pair of parallel guide members radially towards and away from a disk carrying surface of a turntable of a disk player, is constituted by first and second carrying members rotatably mounted to each other with the rotation axis of the second carrying member positioned perpendicular to the longitudinal direction of the guiding members and parallel to a guide plane containing the pair of guiding members so as to pass through a point where the second carrying member is in contact with the other guiding member. The carriage is provided with a differential screw screwed to the first and second carrying members to adjust the relative angular positioning between them. The carriage supporting an optical pickup is driven by a half nut provided on the carriage and a worm screwed to the half nut with the half nut movable within a plane containing the respective axes of the guiding members and the worm, relative to the carriage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.