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. 14, 2026
Filed:
Nov. 13, 2020
Otis Elevator Company, Farmington, CT (US);
Uwe Schönauer, Berlin, DE;
Prasanna Nagarajan, Farmington, CT (US);
OTIS ELEVATOR COMPANY, Farmington, CT (US);
Abstract
An elevator system () includes a drive system () including one or more drive components () and drive hardware () for controlling the supply of power to the one or more drive components (), a safety chain () arranged to break and thus interrupt a supply of power to the one or more drive components () unless all of one or more safety condition(s) is satisfied; and a control device (). The control device () is arranged to receive drive information from the drive hardware () indicative of a drive system fault; to receive safety chain information from the safety chain () indicative of a safety chain break; and to detect and classify a fault in the elevator system () using the drive information and the safety chain information.