Pump and filter system for a drawer-type dishwasher
US7610923B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2005 |
| Grant date | Nov 3, 2009 |
| Priority date | — |
| Expiry date | Nov 4, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L15/4225
- WIPO fieldFurniture, games
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.