Valves and valve actuation – Fluid actuated or retarded – Fluid and non-fluid actuators
Patent
1990-01-10
1990-08-28
Walton, George L.
Valves and valve actuation
Fluid actuated or retarded
Fluid and non-fluid actuators
74 8917, 74107, 74479, 25112903, 25112904, 25112912, 251250, 251251, 307 66, 320 61, 322 35, F16K 3104, F16K 3116, F16K 3154
Patent
active
049519158
ABSTRACT:
An electronic water flow control device, which includes a mini-scale electrical generator which changes the mechanical energy from water flow into electrical energy for storage in a battery and for further use in driving a motor, by means of the control of a control circuit, to carry a piston rod to move forward or backward through the operation of a speed reducing gear set, so as to push a ball valve away from a water inlet for the passing therethrough of water flow or permit such a ball valve to block up the water inlet.
REFERENCES:
patent: 4122381 (1978-10-01), Sturm
patent: 4370631 (1983-01-01), Gerber et al.
patent: 4428398 (1984-01-01), Mito et al.
patent: 4535813 (1985-08-01), Spain
patent: 4779839 (1988-10-01), Sears
patent: 4838310 (1989-06-01), Scott et al.
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