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:
Oct. 03, 2000
Filed:
May. 28, 1998
Applicant:
Inventors:
Natan E Parsons, Brookline, MA (US);
Haiou Wu, Jamaica Plain, MA (US);
Assignee:
Arichell Technologies, Inc., West Newton, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S / ; G01S / ; E03C / ;
U.S. Cl.
CPC ...
250221 ; 2503381 ; 4623 ;
Abstract
In response to a infrared-radiation sensor assembly (12), a control circuit controls an electromechanical valve (18) in an automatic faucet (16). Reflector surfaces (44, 46) so form a sensor beam as to cause the sensor to be insensitive to the presence of a sink (24). The ratio of the resultant radiation pattern's horizontal extent to its vertical extent is greater than it would be in the absence of the reflector surfaces (44, 46). The control circuit is battery-powered, and the electromechanical valve (18) is of the latching variety so as to conserve the battery's energy.