ELECTRO HYDROSTATIC ACTUATOR
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United States of America Patent
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Issued Date -
Dec 18, 2014
app pub date -
Jun 16, 2014
filing date -
Jun 18, 2013
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Abstract
An electro hydrostatic actuator includes a single-rod cylinder having fixed and movable ends, a hydraulic supply source, and a reservoir provided in a hydraulic circuit and capable of storing operation oil. At a predetermined position of the single-rod cylinder close to the fixed end, the hydraulic supply source is disposed at the periphery of the single-rod cylinder, and is integrated with the single-rod cylinder. The reservoir is formed in a double cylindrical shape, and is, at a position close to the movable end relative to the hydraulic supply source, integrated with the single-rod cylinder in the state in which the single-rod cylinder is inserted into the reservoir so as to be coaxial with the reservoir.
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