Dual-speed hand pump aircraft jack
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United States of America Patent
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-
Aug 25, 2015
Grant Date -
Nov 14, 2013
app pub date -
Apr 19, 2013
filing date -
May 11, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
This two-stage jack apparatus for lifting aircraft comprises: a tripod base having three legs; a base tube; a ring having an orifice therethrough, wherein the ring engaging end of each leg is attached to the ring; a cylinder housing a jack wherein the base tube supports the cylinder and wherein the cylinder extends through the orifice of the ring; a two stage hydraulic extension attached to the jack; and a dual speed hand pump comprising a high volume low pressure pump for quick ram actuation to the jack point and a low volume high pressure pump used to actuate rams with a hydraulic pump.
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