Thermally predictable disk drive mechanism
US5029027A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1989 |
| Grant date | Jul 2, 1991 |
| Priority date | — |
| Expiry date | Nov 13, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/1433
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive having a base and a cover, enclosing the memory disks and the magnetic head actuator. The spindle journaling the memory disks and the support for the actuator are secured to the base and to the cover and relatively position the base and the cover with respective peripheral extremities in closely spaced, but not touching relationship, to provide a gap therebetween. A pressure sensitive adhesive tape of a material having a high shear strength is applied to the base and the cover bridging the gap without applying stresses to the cover or the base through the tape and providing a seal for the disk drive between the cover and the base. The materials of the base, the cover, the spindle and the support, have thermal coefficients of expansion which are at least substantially the same. Preferably the materials are the same. Steel is a preferred material. The design also provides rigidity between the ends of the rotary mounting of the memory disks and the support for the magnetic head actuator while providing flexibility in the connections between the base and cover, and thereby eliminating thermally induced slip at these connections. Slip between structural parts of a disk driv…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.