Water level control system

Details Water level control system Water level control system

1978-10-02

1980-05-20

Schwadron, Martin P.

Fluid handling

Liquid level responsive or maintaining systems

With control fluid connection at desired liquid level

68207, 134 57D, 137387, 137842, 200 83WM, F15C 118, H01H 3534

Patent

active

042034620

ABSTRACT:
The solenoid operated water valve has a Venturi on its outlet which aspirates air through the pressure sensing side of a pressure switch until the water level in the washing machine reaches the end of the tube connected to the system through the selection valve. This prevents further aspiration and the Venturi rapidly lowers the pressure in the pressure switch to actuate the switch. The check valve prevents venting the pressure switch to atmosphere long enough for the associated timer to continue the machine program.

REFERENCES:
patent: 2511649 (1950-06-01), Reiter
patent: 2813944 (1957-11-01), Tyzack
patent: 2885879 (1959-05-01), Bloom
patent: 3291932 (1966-12-01), Main
patent: 3334651 (1967-08-01), Clearman
patent: 3344804 (1967-10-01), Lyman
patent: 3581754 (1971-06-01), Adams
patent: 3602250 (1971-08-01), Neenan

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