Wash arm arrangement for a dishwasher
US8844547B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2011 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Jun 17, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L15/23
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A wash arm arrangement (100) for a dishwasher is disclosed. The wash arm arrangement comprises a central arm (121) adapted to be rotatably connected with a first liquid supply shaft (123) for providing pressurized liquid during operation of the dishwasher. The central arm has a first nozzle (130) arranged for outputting a jet of liquid during operation thereby providing a first reaction force Fc for rotating the central arm about its axis of rotation in a first direction. The wash arm arrangement further comprises a satellite arm (122) rotatably arranged on a second liquid supply shaft (124) arranged on an outer end of the central arm, the satellite arm having a second nozzle (131) arranged for outputting a jet of liquid during operation thereby providing a second reaction force Fs for rotating the satellite arm about its axis of rotation in a second direction being opposite to the first direction. The first and second nozzles are arranged such that the central arm is controlled to move with a periodically alternating speed due to the first and second reaction forces acting on the central arm wherein the instantaneous value of a resulting momentum Mtot for the central arm about its…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.