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:
Aug. 25, 1992
Filed:
Jan. 02, 1991
Applicant:
Inventor:
Leon Boiucaner, Farmington, CT (US);
Assignee:
The Stanley Works, New Britain, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E05F / ;
U.S. Cl.
CPC ...
250341 ; 250221 ; 250349 ; 49 25 ; 340545 ;
Abstract
A sliding door sensor employs two arrays of IR emitters which are pulsed to provide an approach detection zone and a threshold detection zone. Radiation reflected from the detection zones is converted to signals which are processed in microprocessors. The sensor periodically automatically adjusts for changes in background. Both presence and motion detection is provided. The sensor also detects dark objects.