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:
Jan. 31, 2023
Filed:
Nov. 20, 2020
Otis Elevator Company, Farmington, CT (US);
Peter Herkel, Berlin, DE;
Norbert Diwisch, Berlin, DE;
OTIS ELEVATOR COMPANY, Farmington, CT (US);
Abstract
An electronic test node () for a safety chain () in a passenger conveyor system includes an electrical connection () for an associated safety switch (). A processor () is configured to monitor a signal carried by the electrical connection () so as to detect whether the associated safety switch () is open or closed. The electronic test node () further includes a test switch () connected in series with the electrical connection (), wherein the processor () is configured to run a test by selectively opening the test switch () and monitoring for a change in the signal carried by the electrical connection ().