Apparatus with staged pressure differential for controlling flui

Details Apparatus with staged pressure differential for controlling flui Apparatus with staged pressure differential for controlling flui

1982-04-23

1984-12-18

Cohen, Irwin C.

Fluid handling

Self-proportioning or correlating systems

Self-proportioning flow systems

60422, 91516, 137118, F15B 1307, G05D 1103

Patent

active

044885695

ABSTRACT:
A fluid flow control system includes a priority valve which is controlled by a pressure differential applied across the valve, and which directs priority flow to a steering circuit and excess flow to an auxiliary circuit. The system insures that during steering, a relatively high pressure differential is required to shift the priority valve away from a priority steering position in which all fluid flow is delivered to the steering circuit. It also insures that when the flow to the steering circuit is sufficient to satisfy the steering demand, and the valve is also directing flow to the auxiliary circuit, a lower pressure differential is required to shift the valve in a direction for increasing the flow to the auxiliary circuit.

REFERENCES:
patent: 3385311 (1968-05-01), Allen
patent: 3996742 (1976-11-01), Goff
patent: 4167893 (1979-09-01), Johnson

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