Release mechanism of bar clamp

Work holders – Operator supported – Handle manipulation for jaw actuation

Reexamination Certificate

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Details

C269S003000

Reexamination Certificate

active

07624974

ABSTRACT:
A bar clamp includes a driving key including a first key plate, an intermediate second key plate engaged the first key plate, and a rear first spring engaged with the first and second key plates; a locking key including a third key plate, an intermediate fourth key plate engaged with the third key plate, and a rear second spring engaged with the third and fourth key plates; and a spring-biased release button engaged with a protrusion of the third key plate. Pressing the release button against a handle grip will counterclockwise pivot the protrusion to compress the second spring until the third key plate contacts the fourth key plate and the third key plate is disposed perpendicularly to a longitudinal axis of a slide bar. Further pressing the release button will counterclockwise pivot the third and fourth key plates until they are perpendicular to the axis of the slide bar.

REFERENCES:
patent: 6338475 (2002-01-01), Ping
patent: 6382608 (2002-05-01), Michell
patent: 6578837 (2003-06-01), Blank et al.
patent: 6655670 (2003-12-01), Liou
patent: 7017894 (2006-03-01), Lin
patent: 7172183 (2007-02-01), Yang
patent: 7513492 (2009-04-01), Kuo
patent: 2006/0226588 (2006-10-01), Khachatoorian et al.
patent: 2008/0088071 (2008-04-01), Zheng

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