Work holders – With fluid means – Plural positioning means sequentially operated
Reexamination Certificate
2001-02-06
2002-08-20
Watson, Robert C. (Department: 3723)
Work holders
With fluid means
Plural positioning means sequentially operated
Reexamination Certificate
active
06435493
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention broadly relates to a new design of a swing arm clamping mechanism. More specifically, the invention relates to new fluid operated clamping mechanism which includes a specially designed clamp body including a piston and cylinder chamber arrangement, with one end of the piston rod being connected to a clamp arm, and one or more electronic switches associated with the clamp body to detect the position of the clamp arm.
REFERENCES:
patent: 4086456 (1978-04-01), Bone
patent: 4176586 (1979-12-01), Stoll et al.
patent: 4896584 (1990-01-01), Stoll et al.
patent: 5695177 (1997-12-01), Mascola
patent: 5820118 (1998-10-01), Craft
Delaware Capital Formation Inc.
Dunnin & Dunn, P.C.
Watson Robert C.
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