Holding mechanism, in particular for a gripping apparatus
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United States of America Patent
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app pub date -
Mar 6, 2002
filing date -
Nov 29, 1999
priority date (Note) -
Abandoned
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Abstract
A holding mechanism for retaining the position of a piston rod of a pneumatic cylinder forming part of a primary fluid-operated system, includes a first set of plates disposed in spaced-apart parallel relationship and having one end connected to the piston rod so as to move together with the piston rod in a longitudinal direction and a second set of plates for engagement between the plates of the first set so that the plates of the first and second sets bear laterally upon one another. A lever is urged in forced engagement against the plates by an elastic member, which is connected to the lever and biased by fluid from the pressure source. In the presence of a pressure drop, the elastic member squeezes the plates of the first and second sets, so as to secure the plates in position through friction.
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