Secondary filter system
US6234184A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1999 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | Nov 15, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L15/4225
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A secondary filter of the present invention is adapted to provide for secondary filtering of wash water that has already been filtered by a primary filter to further remove very fine particles and therefore reduce the deposit of particles on the dishes being washed. The secondary filter is comprised of an annular chamber having an input port in communication with the pump and an output port in communication with the drain. The top of the annular chamber includes a plurality of openings covered by a fine mesh to allow wash water to pass but not fine particles. While the dishwasher is draining, any wash water and particles in the annular chamber will be flushed out through the output port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.