Clamp device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Apr 25, 2017
Grant Date -
Jun 18, 2015
app pub date -
May 31, 2013
filing date -
Jun 28, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A plurality of engagement members (20), inserted in a hole in an object to be fixed, which are capable of gripping an inner circumferential surface of the hole are provided, and a wedge face (32) of a clamping rod (15) is engaged on an inner circumference of the engagement member (20) from an upper side. An upper part of a piston rod (55) protruding upward from a piston body (54) of a piston (12) is coupled to a lower part of the clamping rod (15). The engagement member (20), the clamping rod (15), and the piston (12) are provided in a housing (2). An annular valve member (78) is provided between the housing (2) and the piston rod (55). When the piston (12) has moved to a lower-limit region in a lock direction, an actuating portion (89) of the piston rod (55) causes the valve member (78) via an actuated portion (99) of the valve member (78) to be opened downward.
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