Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Masanori Hirai0
Date of Patent
July 8, 2008
Patent Application Number
11461011
Date Filed
July 31, 2006
Patent Citations Received
0
Patent Primary Examiner
Patent abstract
An actuator includes a cylinder, a piston that is disposed in the cylinder and moves by supply and exhaust of working oil to and from the cylinder, a movable rod that is connected to the piston, a screw shaft, at least a part of which is inserted into the movable rod, a nut that is threaded to the screw shaft and moves integrally with the piston, and an electric motor that rotates the screw shaft forward or backward.
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