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:
Sep. 08, 2015
Filed:
Sep. 15, 2010
Applicant:
Jules Christen, Altdorf, CH;
Inventor:
Jules Christen, Altdorf, CH;
Assignee:
Inventio AG, Hergiswil, CH;
Primary Examiner:
Int. Cl.
CPC ...
B66B 13/14 (2006.01); B66B 19/00 (2006.01);
U.S. Cl.
CPC ...
B66B 13/143 (2013.01); B66B 19/007 (2013.01);
Abstract
An elevator car has an access opening, a car door for closing the access opening, which door has at least one door panel that can be displaced parallel to the access opening, a thrust crank drive for displacing the at least one door panel between an open position and a closed position, an electric motor for driving the thrust crank drive, and a control device for actuating the electric motor. The control device actuates the electric motor so that a displacement velocity of the at least one door panel is substantially constant over the entire displacement path between the open position and the closed position of the door panel.