Read/write head retract mechanism
US5189575A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 1990 |
| Grant date | Feb 23, 1993 |
| Priority date | — |
| Expiry date | Oct 4, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B21/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A retract mechanism for a magnetic head which can read from and/or write to a disk, the mechanism includes a spring arm which supports the head and urges the head toward the disk. The spring arm includes a cam follower which rides along the surface of the cam, which has two parallel horizontal surfaces and two incline surfaces. The spring arm is moved by an actuator in a radial direction along the disk. When the spring arm is moved radially away from the center of the disk, the cam urges the spring arm upwardly, thereby lifting the head up and away from the disk. As the spring arm continues to move radially away from the center of the disk, the cam guides the spring arm such that the head rests safely on a landing platform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.