Rotational positioning apparatus

Joints and connections – Articulated members – Pivoted

Reexamination Certificate

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Details

C016S334000, C016S367000, C403S112000

Reexamination Certificate

active

10930839

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.

REFERENCES:
patent: 4408799 (1983-10-01), Bowman
patent: 6742221 (2004-06-01), Lu et al.
patent: 6798646 (2004-09-01), Hsu
patent: 6845546 (2005-01-01), Lu et al.
patent: 7013532 (2006-03-01), Lu et al.
patent: 2004/0012620 (2004-01-01), Buhler et al.
patent: 2004/0075971 (2004-04-01), Tseng et al.
patent: 2004/0128795 (2004-07-01), Lu et al.
patent: 2004/0139578 (2004-07-01), Yang et al.
patent: 2004/0151411 (2004-08-01), Chang
patent: 2005/0251962 (2005-11-01), De Mello et al.
patent: 551787 (1991-10-01), None
patent: 495130 (2002-07-01), None

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