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:
Apr. 11, 2006
Filed:
Oct. 21, 2002
Applicant:
Masatoshi Tsuji, Ohtsu, JP;
Inventor:
Masatoshi Tsuji, Ohtsu, JP;
Assignee:
Optex Co., Ltd., Shiga, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B 13/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A sensor has a trigger level that is set in advance in which a distance to a detected object and a signal level of waves reflected from the object are associated. The sensor only dispatches an object detection signal indicating that the detected object is an object to be considered as a detection target having a size larger than a predetermined size when a reflected wave that has a signal level exceeding the trigger level is received.