Compensated fluid flow control valve

Details Compensated fluid flow control valve Compensated fluid flow control valve

1986-07-21

1987-08-25

Michalsky, Gerald A.

Motors: expansible chamber type

With motive fluid valve

Contracting chamber exhaust valve controlled by expanding...

91446, 91447, 1375961, 13759613, F15B 1302

Patent

active

046884700

ABSTRACT:
A compensated control valve assembly for control of fluid flow to and from a fluid motor, which may be of a cylinder type and is subjected to positive and negative loads. During control of negative load the controlled pressure level of a pressure reducing valve mechanism handling the fluid flow at negative load pressure is varied upstream of an outflow metering orifice arrangement, positioned at the outlet of the fluid motor, in response to pressure at the inlet of the fluid motor, while maintaining this controlled pressure constant at each specific level. The pressure differential across an inflow metering orifice arrangement, positioned at the inlet of the fluid motor, is maintained at a constant preselected level by a positive load pressure compensating control device.

REFERENCES:
patent: 3882896 (1975-05-01), Budzich
patent: 4222409 (1980-09-01), Budzich
patent: 4487018 (1984-12-01), Budzich

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