Control mechanism for controlling the water supply in an irrigat

Details Control mechanism for controlling the water supply in an irrigat Control mechanism for controlling the water supply in an irrigat

1988-10-17

1989-10-31

Cohan, Alan

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

13762418, 251230, F16K 1102, F16K 3118

Patent

active

048770477

ABSTRACT:
The mechanism prevents erroneous commands caused by brief accidental pulses an dcomprises, in conjuction with a rotary shutter that moves intermittently, a chamber with a float connected to said shutter, the pressure on which is generated by the arrival of fluid and the resultant filling of said chamber; a discharge device causes said chamber to empty slowly within a period of time that is not less than a predetermined limit and which starts when the working pressure is released; cam devices cause a one-step movement of said shutter only when said chamber is completely empty.

REFERENCES:
patent: 3459208 (1969-08-01), Clyde
patent: 3924652 (1975-12-01), Kah
patent: 4116216 (1978-09-01), Rosenberg

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