Cushioning device for a hydraulic jack

Details Cushioning device for a hydraulic jack Cushioning device for a hydraulic jack

1975-05-22

1977-02-08

Maslousky, Paul E.

Motors: expansible chamber type

Working member position responsive motive fluid control

Working member carries part within working chamber which...

91216R, 92 85B, F15B 1522, F01B 1502

Patent

active

040066665

ABSTRACT:
A cushioning device, for cushioning the impact between a closed end portion of a cylindrical member of a hydraulic jack and an end portion of an inner member reciprocable within the cylindrical member, including a blind bore provided in one of the end portions, an elongated plunger attached to the other end portion for telescopic entrance into the blind bore as the end portions approach each other and an orifice for metering fluid forced from the blind bore by the progressive ingress of the plunger into the bore.

REFERENCES:
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patent: 2493602 (1950-01-01), Sterrett
patent: 2642845 (1953-06-01), Stevens
patent: 2704996 (1955-03-01), Peterson et al.
patent: 2935051 (1960-05-01), Fuller et al.
patent: 2973744 (1961-03-01), Hennells
patent: 3633465 (1972-01-01), Puster
patent: 3691902 (1972-09-01), Lebzelter
patent: 3704650 (1972-12-01), Berg
patent: 3835753 (1974-09-01), Bunyard
patent: 3887019 (1975-06-01), Reynolds

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