Clamping apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 16, 2003
Grant Date -
May 23, 2002
app pub date -
Nov 14, 2001
filing date -
Nov 20, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A housing (4) has a cylinder bore (10) into which an annular hydraulic piston (11) is inserted vertically movably. The piston (11) has a tubular bore (11a) into which a driven rod (6) is inserted. The driven rod (6) is provided with an input portion (6a), around which a plurality of transmission members (15) are arranged peripherally side by side. The transmission members (15) swing to a disengaging position (Y) through a push member (30) by a lowering spring (31). When clamping, the piston (11) is driven upwards. Then, first, a slant cam (27) swings the transmission members (15) to an engageable position (X), thereby enabling engaging portions (17) to face the input portion (6a). Next, the piston (11) upwardly drives the input portion (6a) through the engaging portions (17).
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Cited Art Landscape
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