The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 30, 2014
Filed:
Jun. 17, 2011
Sarah Förster, Hamburg, DE;
Niklas Olson, Stockholm, SE;
Anders Haegermarck, Trangsund, SE;
Electrolux Home Products Corporation N.V., Brussels, BE;
Abstract
A wash arm arrangement () for a dishwasher is disclosed. The wash arm arrangement comprises a central arm () adapted to be rotatably connected with a first liquid supply shaft () for providing pressurized liquid during operation of the dishwasher. The central arm has a first nozzle () arranged for outputting a jet of liquid during operation thereby providing a first reaction force Ffor rotating the central arm about its axis of rotation in a first direction. The wash arm arrangement further comprises a satellite arm () rotatably arranged on a second liquid supply shaft () arranged on an outer end of the central arm, the satellite arm having a second nozzle () arranged for outputting a jet of liquid during operation thereby providing a second reaction force Ffor 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 Mfor the central arm about its axis alters periodically during operation, comprising a first momentum Mof the central arm caused by a horizontal reaction force portion Fof the first reaction force F, and a second momentum Mof the central arm, caused by the movement of the satellite arm and comprising a momentum created by a horizontal reaction force portion Fof the second reaction force F.