Apparatus for spraying washing fluid
US5697392A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1996 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | Mar 29, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B3/008
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A spray assembly for a dishwasher includes a fluid pump and a spray tower. The spray tower includes a lower stationary member and an upper rotatable member and includes a fluid cavity therein. The rotatable member has at least one spray opening adjacent its upper end. A spray nozzle directs a stream of washing fluid upwardly into the spray tower and moves the stream of washing fluid in a circular pattern. The stream of water engages the upper rotatable member of the spray tower and the upper rotatable member rotates in response thereto. One form of the invention uses a deflecting surface on the rotatable member for causing rotational movement of the rotatable member and for causing precession of the rotatable member. Another modification of the present invention utilizes a pair of intermeshing gears for causing precession of the rotatable member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.