Browse Prior Art Database

Head Load Measuring Instrument

IP.com Disclosure Number: IPCOM000090403D
Original Publication Date: 1969-Apr-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 45K

Publishing Venue

IBM

Related People

Barnard, CP: AUTHOR

Abstract

The test instrument measures the static load of each of a plurality of read-write head sliders. The latter are used in combination with rotating magnetic disks of a disk pack in a flying relation. Beams 10 are arranged about a machine spindle and each read-write head 12 is disposed on each beam 10, at a position which simulates a disk surface 14. Each beam 10 is pivoted at its center so that the fulcrum F, the force to be measured F1, and the known applied load F2 are all in the same horizontal plane. It is known that F2 R2 + FA R3 = F1 R1 and R1 = R2. The load F2 is gradually increased until FA R3 becomes zero, i.e., contact A just breaks. At this point, F2 = F1 and the load measurement is now completed.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Head Load Measuring Instrument

The test instrument measures the static load of each of a plurality of read- write head sliders. The latter are used in combination with rotating magnetic disks of a disk pack in a flying relation. Beams 10 are arranged about a machine spindle and each read-write head 12 is disposed on each beam 10, at a position which simulates a disk surface 14. Each beam 10 is pivoted at its center so that the fulcrum F, the force to be measured F1, and the known applied load F2 are all in the same horizontal plane. It is known that F2 R2 + FA R3 = F1 R1 and R1 = R2. The load F2 is gradually increased until FA R3 becomes zero, i.e., contact A just breaks. At this point, F2 = F1 and the load measurement is now completed.

1

Page 2 of 2

2

[This page contains 3 pictures or other non-text objects]