Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1986-03-18
1987-04-14
Duggan, Donovan F.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 83, 310 49R, H02K 706
Patent
active
046581634
ABSTRACT:
A device is disclosed for translating the bidirectional, incremental rotation of a disk drive motor of the electric stepping type into the reciprocating, stepwise displacement of a magnetic transducer head in a radial direction of a disklike record medium in a data transfer apparatus employing such record medium. The device includes a lead screw driven by the drive motor and extending parallel to the path of the transducer head. Slidably engaged in the helical groove in the lead screw is an engagement member, such as a ball or pin, which is supported on the head carriage of the data transfer apparatus for causing the linear travel of the transducer head in response to the rotation of the lead screw. The engagement member is affixed to a first cantilever spring on the head carriage, thereby to be biased into working engagement with the lead screw. A second cantilever spring on the head carriage acts on the first cantilever spring and coacts therewith to urge the engagement member against the lead screw. Also mounted to the head carriage, an adjusting screw butts on the second cantilever spring to make possible the fine adjustment of the resultant of the spring forces under which the engagement member is held against the lead screw.
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Duggan Donovan F.
Teac Corporation
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