HYDRAULICALLY ACTUATED MECHANICAL LOCK ASSEMBLY
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United States of America Patent
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Issued Date -
Jan 7, 2016
app pub date -
May 8, 2015
filing date -
Jul 7, 2014
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Abstract
A hydraulically actuated mechanical lock assembly, including a lock actuator comprising a lock housing and a moveable element mounted in the lock housing, wherein the housing is arranged to receive hydraulic fluid at a first end (Chamber A) from a source of high pressure fluid via a return line, and at a second end (Chamber B) from a source of high pressure fluid via a control line, whereby the relative pressures in Chambers A and B are controlled, via the control line, to cause movement of the moveable element between a locked position and an unlocked position; and a lock valve arranged between the return line and the control line to control the flow of hydraulic fluid into Chambers A and B; wherein the return line is configured to be connected between the source of high pressure fluid and the lock valve via chamber A of the lock actuator.
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