Hydraulically operable landing gear
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United States of America Patent
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-
May 24, 2005
Grant Date -
Feb 3, 2005
app pub date -
Jul 28, 2003
filing date -
Jul 28, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vertically adjustable landing gear system for a trailer includes a pair of vertically adjustable lifts, a hydraulic motor having a pair of rotational outputs and a pair of landing gear drive shafts, each rotationally engaging one of the respective lifts and one of the respective rotational outputs to vertically adjust the lifts. A relief valve relieves hydraulic pressure to allow manual operation of the lifts in case of hydraulic system failure. An alternate landing gear system includes a single landing gear drive shaft rotationally engaging the pair of lifts and a drive shaft engagement mechanism engaging the rotational outputs and the drive shaft to transfer rotational motion from the rotational output to the drive shaft.
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