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:
Oct. 21, 2014
Filed:
Dec. 18, 2009
Applicants:
Astrid Sonnenmoser, Ebikon, CH;
Martin Hess, Baar, CH;
David Michel, Thalwil, CH;
Inventors:
Assignee:
Inventio AG, Hergiswil, CH;
Primary Examiner:
Int. Cl.
CPC ...
B66B 1/34 (2006.01); B66B 13/22 (2006.01); B66B 13/16 (2006.01); B66B 1/24 (2006.01);
U.S. Cl.
CPC ...
B66B 13/22 (2013.01); B66B 13/165 (2013.01); B66B 1/2433 (2013.01);
Abstract
An elevator system has at least two elevator cars, each of which has at least one elevator car door and each of which is provided for independent displacement in a common shaft, and a plurality of shaft doors and a safety device having at least one door opening sensor, at least one evaluation unit and at least one data line between the door opening sensor and the evaluation unit. The evaluation unit evaluates at least one signal of the door opening sensor in at least one evaluation step to prevent unauthorized opening of the shaft door.