Pump and filter system for a drawer-type dishwasher

Details Pump and filter system for a drawer-type dishwasher Pump and filter system for a drawer-type dishwasher

2005-02-09

2009-11-03

Cleveland, Michael (Department: 1792)

Cleaning and liquid contact with solids

Apparatus

With means for collecting escaping material

Reexamination Certificate

active

07610923

ABSTRACT:
A drawer-type dishwasher includes a pump system which functions to pump and filter washing fluid in the dishwasher. The pump system includes a sump having an inlet passage, a recirculation passage, a drain passage, a coarse article collection chamber, a filter assembly that is divided into a filter chamber and a washing fluid manifold, and a stationary hub that rotatably supports a wash arm for spraying washing fluid onto dishware supported in the dishwasher. The filter chamber includes a fine particle collection chamber having a valve that selectively opens to allow particles trapped in the filter chamber and fine particle collection chamber to flow to the drain passage. The filter assembly includes a cover having a plurality of radial spaced openings over the filter chamber, as well as a central opening that receives a stationary hub member which rotatably supports a wash arm.

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