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:
Jul. 14, 2026
Filed:
Oct. 17, 2022
Otis Elevator Company, Farmington, CT (US);
OTIS ELEVATOR COMPANY, Farmington, CT (US);
Abstract
A method and device for detecting an elevator safety chain and a computer-readable storage medium for implementing the method. A device for detecting an elevator safety chain, includes: an interface unit coupled with the elevator safety chain and configured to output an operating signal having a first level when the elevator safety chain is in an ON state and an operating signal having a second level when the elevator safety chain is in an OFF state; and a processing unit, including: memory; a microcontroller coupled with the interface unit; and a computer program stored on the memory and running on the microcontroller, the running of the computer program causes: evaluating reliability of the elevator safety chain based on time domain characteristic of the operating signal output by the interface unit.