Latch mechanism for rotary actuator and the like

Details Latch mechanism for rotary actuator and the like Latch mechanism for rotary actuator and the like

1988-04-14

1989-11-14

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 9701, 360106, 360137, 335236, G11B 554, G11B 2116

Patent

active

048811394

ABSTRACT:
A latch mechanism for use in a disc drive rotary actuator and like magnetic device includes a selectively energizable electromagnet mounted to the actuator and spaced from the magnets, and a ferrous arm pivotally attached between the magnets and the electromagnet whereby the latch arm can assume two stable positions of low magnetic reluctance for stray flux from the magnets. In one position the latch arm pivots towards the magnets and engages the rotary actuator. In the other position, the latch arm pivots towards the electromagnet and disengages the rotary actuator. Positioning of the latch arm is dependent on momentary energization and polarity of the electromagnet.

REFERENCES:
patent: 1312895 (1919-08-01), Derby
patent: 2883487 (1959-04-01), Spaulding et al.
patent: 3312492 (1967-04-01), Remhof
patent: 3415562 (1968-12-01), Peterson
patent: 3489917 (1970-01-01), Gurol
patent: 3656073 (1972-04-01), Wood et al.
patent: 4131921 (1978-12-01), Gruczelak
patent: 4139874 (1979-02-01), Shiraishi
patent: 4173004 (1979-10-01), Woodlief
patent: 4428607 (1984-01-01), Levine
patent: 4484241 (1984-11-01), Brende et al.
patent: 4506407 (1985-03-01), Downey
patent: 4562500 (1985-12-01), Bygnes
patent: 4574372 (1986-03-01), D'Arc
patent: 4581597 (1986-04-01), Walley
patent: 4609337 (1986-09-01), Wichterle et al.
patent: 4654735 (1987-03-01), Izraelev et al.
Hearn, "Actuator Retraction Device", IBM TDB, vol. 19, No. 4, Sep. 1976.
Brende et al., "Magnetic Home Latch Assembly", IBM TDB, vol. 26, No. 3B, Aug. 1983.

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