Electrically controlled pressure relief valve including a hydrau

Details Electrically controlled pressure relief valve including a hydrau Electrically controlled pressure relief valve including a hydrau

1984-04-16

1985-10-22

Schwadron, Martin P.

Fluid handling

Line condition change responsive valves

Direct response valves

F16K 1706

Patent

active

045482330

ABSTRACT:
The invention relates to pressure relief valves which spring bias is controlled by a proportional magnet. The force applied by the proportional magnet is increased by an additional hydraulic pressure force which acts on the spring. There is the advantage of decreasing the size of the proportional magnet and/or increasing the flow capacity of the valve.

REFERENCES:
patent: 3791408 (1974-02-01), Saitou et al.
patent: 4063594 (1977-12-01), Canterbury
patent: 4386626 (1983-06-01), Hehl
"Olhydraulik und Pneumatik", No. 21, (1977), pp. 722-724, 727-729.

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