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.:

US 8421020 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 16, 2013

Filed:

Jan. 20, 2009
Applicants:

Weigen Chen, Shanghai, CN;

Yifeng Yang, Shanghai, CN;

Jian Zhang, Shanghai, CN;

Inventors:

Weigen Chen, Shanghai, CN;

Yifeng Yang, Shanghai, CN;

Jian Zhang, Shanghai, CN;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E03C 1/05 (2006.01); G01J 5/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

An infrared sensing device mounted in the faucet for a wash basin. The device includes a housing, an emitting lens for focusing the emitted infrared light, and a receiving lens for focusing the reflected infrared light. The optical center of the emitting lens is biased to cause the emitted light to deviate from the basin and from a water column flowing from the faucet.


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