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:
Jun. 16, 2026
Filed:
Dec. 07, 2022
Inventio Ag, Hergiswil, CH;
Andreas Bertram, Lucerne, CH;
Roland Delvento, Buren NW, CH;
Andreas Egger, Kriens, CH;
Flavio Greissinger, Kussnacht, CH;
Reto Hugentobler, Ennetburgen, CH;
Peter Mori, Rothenburg, CH;
Martin Rigert, Kriens, CH;
Martin Rogger, Rotkreuz, CH;
Ruedi Stocker, Eschenbach LU, CH;
Oliver Wuthrich, Eich, CH;
INVENTIO AG, Hergiswil, CH;
Abstract
A safety locking device for a shaft door of an elevator and a method for opening the shaft door using the safety locking device involve a shaft door lock having: a first stopper stopping the shaft door at a closed first position wherein the lock locks the shaft door; an emergency release mechanism manually releasing the lock allowing movement in an opening direction; a second stopper stopping the shaft door at a semi-open second position between closed and open wherein the lock locks the shaft door; and at least one counter-stopper engaging with the first stopper to stop the shaft door at the first position and engaging with the second stopper to stop the shaft door at the second position.