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. 17, 2017
Filed:
May. 27, 2014
Applicant:
Inventio Ag, Hergiswil, CH;
Inventors:
Rudolf J. Müller, Lucerne, CH;
Eric Birrer, Buchrain, CH;
Assignee:
Inventio AG, Hergiswil, CH;
Primary Examiner:
Int. Cl.
CPC ...
B66B 13/22 (2006.01); B66B 13/06 (2006.01);
U.S. Cl.
CPC ...
B66B 13/22 (2013.01); B66B 13/06 (2013.01);
Abstract
A switching device for an elevator door provides a door contact signal. The switching device includes a magnet, a plurality of proximity sensors, and a detection area, which area is adjoined by the proximity sensors and in which the magnet can be moved. A sensor signal can be generated by each of the proximity sensors in at least one position of the magnet in the detection area, wherein the sensor signals are dependent on the distance from the magnet to the proximity sensors. A method for providing the door contact signal utilizes the switching device.