Hydraulic safety valve base

Details Hydraulic safety valve base Hydraulic safety valve base

1974-09-26

1976-06-29

Nilson, Robert G.

Fluid handling

Self-proportioning or correlating systems

Supply and exhaust type

91442, F16K 1107

Patent

active

039659194

ABSTRACT:
The present invention relates to a safety valve for use with a hydraulic system as is utilized in raising loads such as with a front-end loader, a fork truck, snorkel truck, and the like. The safety valve provides a spring actuated plunger which acts to trap hydraulic fluid within a hydraulic cylinder to retain a load in its raised position in the event a hydraulic feed line or the like should break.

REFERENCES:
patent: 1933905 (1933-11-01), Hawks
patent: 3074384 (1963-01-01), Pilch
patent: 3339574 (1967-09-01), Erb et al.
patent: 3419030 (1968-12-01), Gratzmuller
patent: 3606905 (1971-09-01), Fehler

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