Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
Patent
1975-11-10
1976-12-14
Cohan, Alan
Fluid handling
Self-proportioning or correlating systems
Self-controlled branched flow systems
13762414, 235201ME, G05D 1100
Patent
active
039969568
ABSTRACT:
An electro-fluid interface device utilizes a control member that oscillates within a generally cylindrical chamber between an opposed pair of nozzles located at the ends of the chamber. Each nozzle is in fluid communication with a fluid supply, a fluid outlet, and a fluid drain. A coil or coils energized in response to an electrical input signal pulse width modulate the oscillation of the control member to produce a fluid flow through the outlets that is proportional to the electrical signal. In a preferred form, a pair of the coils is energized to oscillate the control element electromagnetically in cooperation with fluid flow forces on the control member due to the flow through the nozzles. Means for sensing the position of the control element switch the energizing current between the coils.
REFERENCES:
patent: 3431934 (1969-03-01), Riordan
patent: 3504692 (1970-04-01), Goldstein
patent: 3552437 (1971-01-01), Blosser
Cohan Alan
University of New Hampshire
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