Hydraulic shock-absorbing jack

Details Hydraulic shock-absorbing jack Hydraulic shock-absorbing jack

1983-12-21

1985-12-31

Garrett, Robert E.

Power plants

Pressure fluid source and motor

With control means for structure storing work driving energy

91170R, 18832222, F15B 1522

Patent

active

045612480

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.

REFERENCES:
patent: 2649842 (1953-08-01), Caldwell et al.
patent: 2679827 (1954-06-01), Perdue

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