Patent · US Expired

Linear actuator with reduced wear guide way

US5029029A · kind A · utility

14Cited by
1References
13Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 16, 1990
Grant dateJul 2, 1991
Priority date
Expiry dateNov 16, 2010

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH02K41/0356
  • WIPO fieldAudio-visual technology
  • WIPO sectorElectrical engineering

Abstract

A linear actuator for positioning the heads of a disk file relative to tracks on the disks employs a ceramic material having wear properties superior to steel in guide surfaces for guiding a head supporting carriage running on rotary bearings in contact with the guide surfaces. The preferred ceramic material is tetragonally stabilized zirconia.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.