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:
Jul. 29, 1997
Filed:
Jan. 24, 1996
Applicant:
Inventor:
Hans-Peter Rudrich, Windischeschenbach, DE;
Assignee:
Friedrich Grohe AG, Hemer, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E03C / ; F16K / ;
U.S. Cl.
CPC ...
137-1 ; 25112904 ; 4304 ; 4623 ; 13762411 ;
Abstract
An infrared proximity sensing circuit for use with sanitary fixtures to control water flow can have an ambient light proximity sensor which can control the period at which the circuit and the sensor are activated or the amplitude of the transmitted infrared power to conserve battery power when the circuit is a battery powered one. The ambient light sensor detects the ambient brightness and the time period of the circuit and the proximity sensor is changed upon the detected ambient brightness falling below the threshold brightness.