Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1996-03-04
1998-02-10
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
G11B 554, G11B 2122
Patent
active
057175489
ABSTRACT:
A bistable latch assembly is disclosed which includes a latch lever supported on a pivot pin adjacent the rotating discs and the actuator arm, and rotatable between two stable positions defined at the opposite end of the lever from the pivot pin by a pair of stop pins. The latch lever includes a magnet movable between these two stop pins, the attraction of the magnet to the pins defining the two stable positions for the lever. An edge of the lever facing the disc includes a notch which captures a pin extending from the actuator arm. When the latch lever engages the actuator arm pin in the notch, then the magnet of the latch lever is held by magnetic attraction against one of the stop pins. When the actuator arm is to be put to use in the disc drive, the voice coil motor is actuated, and has sufficient power to cause the stop pin on the actuator arm to disengage from the notch. As the pin slides along an edge of the latch lever, it moves the magnet from one stable position to the other stable position causing the latch lever to rest against the other stop pin.
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Koester David Douglas
Kostecka William Joseph
Seagate Technology Inc.
Wolff John H.
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