Clamping apparatus
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United States of America Patent
Stats
-
May 28, 2002
Grant Date -
Mar 14, 2002
app pub date -
Aug 9, 2001
filing date -
Sep 12, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
When clamping, compressed air within a second chamber (22) of a pneumatic cylinder (12) is discharged and fresh compressed air is supplied to a first chamber (21). Then a pressure of the compressed air within the first chamber (21) and an urging force of a compression spring (25) move a piston (20) leftwards. The piston (20) moves an output rod (26) rightwards strongly through a plurality of engaging balls (34) and a first pressure receiving member (31). When unclamping, the compressed air within the first chamber (21) is discharged and fresh compressed air is supplied to the second chamber (22). Then a pressure of the compressed air within the second chamber (22) moves the piston (20) rightwards and at the same time the output rod (26) leftwards.
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