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. 26, 2010
Filed:
Feb. 03, 2005
David Pillin, Saint-Brisson sur Loire, FR;
Sébastien Fougeron, Les Bordes, FR;
Gérard Sirigu, Gien, FR;
David Pillin, Saint-Brisson sur Loire, FR;
Sébastien Fougeron, Les Bordes, FR;
Gérard Sirigu, Gien, FR;
Otis Elevator Company, Farmington, CT (US);
Abstract
The invention relates to a safety lock () for an elevator landing door detecting intrusion of a person in the shaft through the landing door, activating a bistable switch () through its spindle lever () putting the elevator into safe operation when the landing door is opened by turning the corresponding key, it being impossible to reset the switch () manually from the inside of the shaft, which comprises a device () fixing the lock in the open position with the door open, that is released when the door is closed such that the switch () can be reset by turning the lock () in the closing direction of the door in which the key is turned in the opposite direction to the opening direction, the switch () being reset mechanically by a mechanical means connected to the spindle lever ().