Apparatus for adjusting the gram load of head gimbal assemblies
US5842270A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1996 |
| Grant date | Dec 1, 1998 |
| Priority date | — |
| Expiry date | Mar 18, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53022
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The gram load of head gimbal assemblies (HGA) of a head stack assembly (HSA) is adjusted before the HSA is installed in a disk drive. Each HGA includes an elongated flexible member having a bend that is transverse to the longitudinal axis of the HGA. The apparatus includes means for removably mounting the HSA for movement in a plane parallel to the longitudinal axis of the selected HGA to a Gram Load Adjusting (GLA) station, means to restrain movement of the HGA during gram load adjustment, a force-transmitting bar having an elongated bearing edge, means for positioning the bar with the edge parallel to the bend and in force-transmitting contact with the bend area of the flexible element, and means for moving the edge to adjust the gram load to a desired value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.