Viscosity-temperature compensator for hydraulic systems

Details Viscosity-temperature compensator for hydraulic systems Viscosity-temperature compensator for hydraulic systems

1985-04-18

1987-08-11

Look, Edward K.

Power plants

Pressure fluid source and motor

Condition responsive control means responsive to, or...

60426, 60484, 408 12, 408 17, 408130, E21B 4906, F16D 3100

Patent

active

046852948

ABSTRACT:
A hydraulic control system for a downhole sidewall coring tool having first and second power hydraulic systems in which changes in pressure drop in a portion of the first hydraulic system adjusts a control valve to change the pressure in a part of the second hydraulic system. Means are provided to adjust the operation of the control valve as a function of viscosity change in the hydraulic fluid caused by change in ambient temperature.

REFERENCES:
patent: 2005731 (1935-06-01), Ernst et al.
patent: 3910044 (1975-10-01), Symmank
patent: 4280569 (1981-07-01), Mount, II

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