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:
Mar. 23, 1999
Filed:
May. 26, 1995
Applicant:
Inventor:
Vlad Zaharia, Rocky Hill, CT (US);
Assignee:
Otis Elevator Company, Farmington, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
318779 ; 318798 ; 361 23 ; 324161 ;
Abstract
A safety control arrangement for escalators includes a detector for generating a trigger signal, and a microprocessor connected to a memory. A serial data communications bus connects the detector to the processor. The memory includes toggling and interrogating routines which permit verifying proper operability of the detector.