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:
Apr. 04, 2017
Filed:
Dec. 04, 2009
Michael Fauth, Pleinfeld, DE;
Erwin Oberstaller, Buttenwiesen, DE;
Andreas Reiter, Finningen, DE;
Roland Rieger, Rainau, DE;
Michael Fauth, Pleinfeld, DE;
Erwin Oberstaller, Buttenwiesen, DE;
Andreas Reiter, Finningen, DE;
Roland Rieger, Rainau, DE;
BSH Hausgeräte GmbH, Munich, DE;
Abstract
In a method for pumping a fluid out of an aquiferous household device such as a dishwashing machine, a drain pump and a circulation pump are operated at least partially simultaneously to ensure that, in the event of an abrupt stop of the circulation pump, reverse flow that may cause filter cake formed by separating soiling and particles to loosen resulting in their re-soiling of the items to be cleaned. The speed of the circulation pump is lowered from a maximum speed to at least a minimum speed substantially without pressure surges before startup of the drain pump.