Shock load detection device

Details Shock load detection device Shock load detection device

1988-03-11

1989-08-29

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Recording-or erasing-prevention

360 75, G11B 1504, G11B 5012

Patent

active

048622982

ABSTRACT:
A shock load detection device mounted on a disk drive housing of a computer disk drive unit to issue a write-fault signal should the disk drive unit have a mechanical shock imposed thereon. The detection device includes three piezo-electric crystals mounted orthogonally between a base and a seismic mass. Any shock load along x, y, and z axes through the piezo-electric crystals produces an electrical charge which is amplified, filtered, and compared for issuing a write-fault signal. The write-fault signal is used to stop the writing of read/write heads on a spindle of a head disk assembly before the shock imposed thereon could otherwise move the read/write heads off track causing a data error.

REFERENCES:
patent: 3137834 (1964-06-01), Pfann
patent: 3304787 (1967-02-01), Chiku et al.
patent: 3363471 (1968-01-01), Lovelace et al.
patent: 3853000 (1974-12-01), Barnett et al.
patent: 4040103 (1977-08-01), White
patent: 4088907 (1978-05-01), Jones et al.
patent: 4430895 (1984-02-01), Colton
patent: 4498025 (1985-02-01), Takahashi
patent: 4644181 (1987-02-01), Mosconi et al.
patent: 4658175 (1987-04-01), Albert
patent: 4672475 (1987-06-01), Nakasho

Affiliated with

Also associated with

Rating

Shock load detection device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Shock load detection device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shock load detection device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2243871