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:
Dec. 16, 2003
Filed:
May. 01, 2002
Applicant:
Inventors:
Andreas Kleinhans, Bretten, DE;
Wilfried Schilling, Kraichtal, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H 9/00 ; H03K 1/794 ; G09G 5/00 ;
U.S. Cl.
CPC ...
H01H 9/00 ; H03K 1/794 ; G09G 5/00 ;
Abstract
A sensor element and a touch switch arrangement have a sensor surface, which engages on the underside of a control surface. The sensor surface is at least partly light-transmitting and is illuminated from below by a LED as the light source. A Funnel-shaped, closed light guide structure is provided, which guides or conducts the light from the LED to the sensor surface or shield against the environment. The light guide structure can additionally have further function(s) such as securing in position or electrical contacting of the sensor surface.