Rotational positioning apparatus
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United States of America Patent
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Mar 13, 2007
Issued Date -
N/A
app pub date -
Sep 1, 2004
filing date -
Sep 1, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A rotational positioning apparatus includes a fixed member having a first wear portion and a stopper portion; at least a positioning washer disposed on the first wear portion, the positioning washer is formed with a positioning portion to abut against the stopper portion and at least a protruding portion radially extending outward; and a rotating member having a second wear portion engaged with the positioning washer, and a push portion for pushing the protruding portion of the positioning washer. With the relative locations for the stopper portion, positioning portion, protruding portion, and pushing portion, a relative rotation track between the fixed member and the positioning washer is summed with a relative rotation track between the rotating member and the positioning washer to flexibly design a rotational angle for the rotational positioning apparatus and ensure that the rotating member is firmly positioned at a desired location.
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