Low friction electro-hydraulic pilot valve

Details Low friction electro-hydraulic pilot valve Low friction electro-hydraulic pilot valve

Filed on

1976-04-21

Date issued

1978-05-09

Examiner

Nilson, Robert G.

Patent Class

Fluid handling

SubClass

Systems

SubSubClass

Multi-way valve unit

Other Related Categories

251172, F16K 1106

Type

Patent

Status

active

Patent number

040881520

Description

ABSTRACT:
A solenoid actuated pilot valve for handling high pressure fluids wherein a single inlet and outlet shear seals are used on the gate which is mounted for movement on roller bearings to reduce frictional loads in moving the pilot valve gate in an unbalanced condition.

REFERENCES:
patent: RE27789 (1973-10-01), Tillman
patent: 910163 (1909-01-01), Benninghoff
patent: 2063655 (1936-12-01), Barner
patent: 2291563 (1942-07-01), Rotter
patent: 3324888 (1967-06-01), Henderson
patent: 3482816 (1969-12-01), Arnold
patent: 3587647 (1971-06-01), Walters
patent: 3761054 (1973-09-01), Abdo

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