Device for coarse and fine positioning of a first element and a

Details Device for coarse and fine positioning of a first element and a Device for coarse and fine positioning of a first element and a

1997-09-15

2000-03-28

Miller, Brian E.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360106, G11B 555

Patent

active

060439580

ABSTRACT:
The invention relates to a device for positioning a first element relatively to a second element. The device according to the invention uses lifting means comprising a cam element and actuator means to actuate the cam element. The cam element has a plurality of contiguously arranged sectors with machined edges belonging to first and second interleaved groups. The machined edges are shaped such that a response of the lifting means to the actuator means has different values for sectors of said first and second group thereby providing alternately a coarse positioning and a fine positioning. The device may for example be used to position a multitrack magnetic tape and a magnetic writing/reading head relatively to each other.

REFERENCES:
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patent: 4423446 (1983-12-01), Takahashi et al.
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patent: 5280402 (1994-01-01), Anderson et al.
patent: 5379170 (1995-01-01), Schwarz
patent: 5434732 (1995-07-01), Schwarz et al.
patent: 5519554 (1996-05-01), Todd et al.

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