Shock absorbing device for hydraulic cylinder

Details Shock absorbing device for hydraulic cylinder Shock absorbing device for hydraulic cylinder

1982-08-24

1985-05-21

Maslousky, Paul E.

Motors: expansible chamber type

Working member position responsive motive fluid control

Working member carries part within working chamber which...

92 85B, F15B 1522

Patent

active

045178780

ABSTRACT:
A shock absorbing device for a hydraulic cylinder including a shock absorbing hole formed in an end wall of cylinder, a passageway having a port opening in the shock absorbing hole at its inner peripheral surface and a shock absorbing member attached to the piston and aligned with the shock absorbing hole so that it enters the hole during shock absorbing stroke. During movement of the shock absorbing member, it throttles the flow of fluid in the hole to perform a first stage shock absorption, then throttles the flow of fluid through the port to perform a second stage shock absorption, and at last compresses the fluid in the bottom of the hole to perform a third stage shock absorption.

REFERENCES:
patent: 3418888 (1968-12-01), Mercier
patent: 3704650 (1972-12-01), Berg
patent: 3933080 (1976-01-01), Corrie
patent: 3964370 (1976-06-01), Rich
patent: 4064788 (1977-12-01), Rich et al.
patent: 4386555 (1983-06-01), Horiuchi et al.

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