Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Alex Huber0
Sean T. Kehoe0
Troy C. Thorson0
James G. Ballard0
Marc S. D'Antuono0
Date of Patent
March 12, 2019
0Patent Application Number
151301220
Date Filed
April 15, 2016
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A hydraulic power tool includes a housing defining a cylinder, a piston at least partially positioned within the cylinder and movable between a retracted position and an extended position, a reservoir containing hydraulic fluid, a pump for transferring hydraulic fluid in the reservoir to the cylinder, causing the piston to move from the retracted position toward the extended position, a return valve defining a rotational axis and positioned between the cylinder and the reservoir, and a valve actuator driven by the pump for opening the return valve, thereby fluidly communicating the cylinder and the reservoir, in response to a predetermined pressure being reached in the cylinder.
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