Quantum Corporation

Robert O Campbell

Thomas A Tacklind

A magnetic latch for a disk file actuator comprises a latch plate formed of a magnetic material of low magnetic hardness located on the actuator; a core ferromagnetic material of medium magnetic hardness mounted relative to the base and surrounded by a coil. A power supply is selectively coupled to the coil for applying magnetizing/demagnetizing energy to the core. As the latch plate moves in a direction toward the core and a magnetizing force is applied by the power supply, the latch plate becomes drawn to and restrained by the core. When a demagnetizing force is applied to the coil by the power supply, the actuator is released from the latched position.

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Louisville, CO, United States of America

Robert O Campbell