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:
May. 04, 2010
Filed:
Jan. 11, 2008
Dietmar Weisser, Tuttlingen, DE;
Guido Schick, Mühlheim, DE;
Heinrich Müller, Tuttlingen, DE;
Wolfgang Häussler, Rottweil, DE;
Michael Bessler, Nufringen, DE;
Dietmar Weisser, Tuttlingen, DE;
Guido Schick, Mühlheim, DE;
Heinrich Müller, Tuttlingen, DE;
Wolfgang Häussler, Rottweil, DE;
Michael Bessler, Nufringen, DE;
Marquardt GmbH, Rietheim-Weilheim, DE;
Abstract
A process and a device are provided for ascertaining the rotation of a liquid spray arm for a domestic appliance. Lighting means serves as a light transmitter and a photoreceiver serves as a light receiver. The lighting means and the photoreceiver are assigned a light-conducting element. At a first location of the light-conducting element, at least some light emitted from the lighting means is coupled to a path so that the light is guided in the light-conducting element by total reflection. At a second location of the light-conducting element that spaced apart from the first location in the direction of propagation of the light, the light guided in the light-conducting element is coupled out of the path so that the light is received by the photoreceiver. The intensity of the light received by the photoreceiver is evaluated by an evaluation circuit with respect to the rotation of the spray arm.