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Rotational positioning apparatus

  • US 20060044089A1
  • Filed: 09/01/2004
  • Published: 03/02/2006
  • Est. Priority Date: 09/01/2004
  • Status: Active Grant
First Claim
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1. A rotational positioning apparatus, comprising:

  • a fixed member having a first wear portion and a stopper portion;

    at least a positioning washer disposed on the first wear portion of the fixed member, wherein the positioning washer is formed with a positioning portion abutting against the stopper portion of the fixed member and at least a protruding portion extending radially 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, so that the push portion drives rotation of the positioning washer and the positioning portion is stopped by the stopper portion to achieve positioning during the rotation.

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