Dishwasher

Details Dishwasher Dishwasher

1992-02-25

1993-09-07

Stinson, Frankie L.

Cleaning and liquid contact with solids

Apparatus

Automatic controls

134176, 134179, 134182, B08B 302

Patent

active

052419754

ABSTRACT:
A dishwasher includes a washing compartment defined in a cabinet for containing tableware and reserving a predetermined amount of wash liquid on the bottom, a wash pump sucking the wash liquid reserved in the washing compartment and feeding the liquid, a spray nozzle mounted in the washing compartment so as to be vertically moved, to receive the wash liquid fed from the wash pump and to spray the wash liquid to the tableware, and feed liquid pressure changing means for changing a pressure of the wash liquid fed to the spray nozzle during washing the tableware with the wash liquid sprayed from the spray nozzle so that the wash liquid pressure is increased and decreased at a plurality of times, thereby reciprocally driving the spray nozzle vertically at a plurality of times.

REFERENCES:
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patent: 3077200 (1963-02-01), Guth
patent: 3134386 (1964-05-01), Jenkins
patent: 3168868 (1965-02-01), Schultz
patent: 3253784 (1966-05-01), Long et al.
patent: 3280751 (1966-10-01), Ekey
patent: 3288156 (1966-11-01), Jordan et al.
patent: 3648931 (1972-03-01), Jacobs
patent: 3841342 (1974-10-01), Cushing et al.
patent: 3989054 (1976-11-01), Mercer
patent: 4172463 (1979-10-01), Woolley et al.
patent: 4509687 (1985-04-01), Cushing
patent: 4511312 (1985-04-01), Hartwig
patent: 4732323 (1988-03-01), Jarvis et al.

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