Load/unload suspension device for a magnetic disc apparatus
Patent 4605979 Issued on August 12, 1986. Estimated Expiration Date: 
March 22, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 22, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesTransducer suspension mount apparatus Read/write head carriage assembly Movable magnetic head block assembly for a double sided flexible disk storage device Patent #: 4423449 InventorsAssigneeApplicationNo. 06/592256 filed on 03/22/1984US Classes:360/254.3, Moving lifter360/254.6, Actuator side detail360/255.2, Moving lifter360/255.5Actuator side detailExaminersPrimary: Hecker, Stuart N.Assistant: Garcia, Alfonso Attorney, Agent or FirmInternational ClassG11B 5/54 (20060101)AbstractA slider equipped with a magnetic head is pressed on a magnetic disk surface under a constant pressure by a pressing member. The slider is loaded and unloaded by a loading/unloading mechanism. A driving unit of the loading/unloading mechanism has a shape memory alloy member which offers a shape memory effect based on the thermoelastic martensitic transformation, and a resilient member having a resilient force against the driving force of the shape memory alloy member. Moreover, the loading/unloading mechanism is arranged such that when the slide is loaded, the driving force of the loading/unloading mechanism is not applied to the pressing member supporting the slider.Other References
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