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. 19, 2022
Filed:
Dec. 01, 2017
Applicant:
Inventio Ag, Hergiswil, CH;
Inventor:
Jules Christen, Altdorf, CH;
Assignee:
INVENTIO AG, Hergiswil NW, CH;
Primary Examiner:
Int. Cl.
CPC ...
B66B 13/08 (2006.01); B66B 13/18 (2006.01); B66B 3/00 (2006.01); B66B 13/12 (2006.01); B66B 13/30 (2006.01);
U.S. Cl.
CPC ...
B66B 13/08 (2013.01); B66B 13/18 (2013.01); B66B 3/00 (2013.01); B66B 13/12 (2013.01); B66B 13/30 (2013.01); E05Y 2900/104 (2013.01);
Abstract
A device for unlocking a landing door includes a door leaf that can be moved between an open position and a closed position, a bar arranged on the door leaf to lock the door leaf in the closed position, and an energy accumulator coupled to the door leaf to provide the energy for moving the door leaf into the closed position in the event that the energy supply needed to drive the door leaf fails. The energy accumulator is coupled to the door leaf by an elastic element such that through a displacement of the energy accumulator when the door leaf is in the closed position, the bar is moved to an unlocked position.