Hydraulic shock-absorbing jack
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United States of America Patent
Stats
-
Dec 31, 1985
Grant Date -
N/A
app pub date -
Dec 21, 1983
filing date -
Dec 22, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A hydraulic shock-absorbing jack particularly for use underwater comprises a cylinder 1 in which a piston 20 associated with an actuated rod 23 is slidable. The piston defines within the cylinder a first actuating chamber 6 provided with a first inlet 2 for actuating liquid and connected to an accumulator 7 of elastically variable volume, and a second actuating chamber 8 provided with a second inlet 3 for actuating liquid. The rod is mounted to be slidable relative to the piston such that, in the event of a shock applied to the rod which would otherwise cause an increase in the volume of the second chamber, the rod alone moves relative to the piston without affecting the volume of the second chamber. The rod is provided with an enlarged head 24 located in the first chamber and preventing its disengagement from the piston.
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