Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 31, 2010
Patent Application Number
11962082
Date Filed
December 20, 2007
Patent Primary Examiner
Patent abstract
Rotational motion of a male screw member is converted to linear motion of a female screw member that is screw engaged with the male screw member, thereby causing movement of a rod member for clamping an object. When a load from the object becomes larger than a predetermined value, and exceeds the frictional force of a viscous material and a friction plate, the female screw member is gradually turned and clamping continues while movement of the rod member is decelerated.
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