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.

Date of Patent:
Mar. 27, 1990

Filed:

Sep. 23, 1988
Applicant:
Inventors:

Takashi Horii, Kadoma, JP;

Hiroshi Matsuda, Kadoma, JP;

Hidekazu Himezawa, Kadoma, JP;

Shinji Kirihata, Kadoma, JP;

Tsunehiko Araki, Kadoma, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J / ; G08B / ;
U.S. Cl.
CPC ...
250221 ; 250342 ; 340567 ;
Abstract

A personal body detecting device makes it possible to determine the presence and absence of a personal body in a detecting zone by sensing infrared rays in the zone with a plurality of infrared ray detecting elements, detecting at a discriminating means a peak level and output time in connection with respective outputs of the infrared ray detecting elements, and comparing them with each other. The personal body having reached the detecting zone in any direction thereto can be reliably detected, and a highly reliable detecting operation can be realized.


Find Patent Forward Citations

Horii, Takashi. (1990). Infrared intrusion detector with a plurality of infrared ray detecting (U.S. Patent No. 4912748). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4912748

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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