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. 07, 2026
Filed:
Nov. 18, 2021
Otis Elevator Company, Farmington, CT (US);
Peter Herkel, Berlin, DE;
Dirk H. Tegtmeier, Berlin, DE;
OTIS ELEVATOR COMPANY, Farmington, CT (US);
Abstract
An elevator system includes a hoistway () including a landing (A-C), which includes a landing door (A-C), an elevator car (), comprising an elevator car door (), arranged to move within the hoistway (), a first safety switch () configured to indicate a potential hazard in the elevator system () and a controller (). The controller () is configured, when the first safety switch () is triggered, to stop movement of the elevator car () and determine whether the elevator car () is located anywhere within an unlocking zone () in the hoistway. The controller is further configured, if it is determined that the elevator car () is located anywhere in the unlocking zone (), to allow the elevator car door () and landing door (A-C) to be opened.