Mechanism for minute movement of a head
US5764444A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1995 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Feb 2, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5565
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a device which is adapted to write and read an information on and from a recording disk through a head and includes a head actuator for moving the head in a radial direction of the recording disk so as to position the head at a desired recording track on the recording disk, a mechanism for minute movement of a head provided at a part of the head actuator is capable of moving the head a very small distance independently of an operation of the head actuator. This mechanism for minute movement of a head is provided with expansion regions which are arranged symmetrically with respect to a center line of the head actuator and are separated by a clearance. Expansion members which are fixed on both or either of front and rear surfaces of the expansion regions, cause the expansion regions to expand or contract by the deformation thereof produced according to application of the power. A fixed region, which is provided continuously with an end of the expansion regions in an expanding direction thereof, is not displaced according to the expansion or contraction of the expansion regions. A movable region, which is provided continuously with the other end of the expansion regions in the expa…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.