Fluid handling – Liquid level responsive or maintaining systems – Washing machine cycle control
Patent
1992-07-10
1994-05-10
Walton, George L.
Fluid handling
Liquid level responsive or maintaining systems
Washing machine cycle control
134 57D, 137412, 137429, 200 84R, 417 41, 417 44R, F16K 3118, F16K 3300
Patent
active
053099397
ABSTRACT:
A water-conducting household appliance includes a liquid container having a static content level, a fill control device, a cycle control unit, an inflow valve to be opened by the cycle control unit and closed by at least one of the fill control device and the cycle control unit, an evacuation pump, a switch having a switching position in which the switch turns on the evacuation pump and selectably closes the inflow valve, and a chamber hydraulically communicating with the liquid container and having an opening for the entry of water. A safety device for the appliance includes a safety level switch device having a float disposed in the chamber, the float having a switching position in which the float acts upon the switch, and the float having a position of repose in which the float is kept at a distance above the static content level and in which the float acts upon the switch to switch off the evacuation pump.
REFERENCES:
patent: 3334651 (1967-08-01), Clearman
patent: 3344804 (1967-10-01), Lyman
patent: 3397716 (1968-08-01), Anderson
patent: 3464437 (1969-09-01), Zane
patent: 3885580 (1975-05-01), Cushing
patent: 4168615 (1979-09-01), Condit
patent: 4180085 (1979-12-01), Berges et al.
patent: 4180095 (1979-12-01), Woolley et al.
patent: 4741357 (1988-05-01), Battel et al.
Eiermann Rudiger
Jerg Helmut
Stickel Ernst
Bosch-Siemens Hausgerate GmbH
Greenberg Laurence A.
Lerner Herbert L.
Walton George L.
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