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:
May. 27, 2011
Christian Studer, Lucerne, CH;
Hans Kocher, Udligenswil, CH;
Karl Weinberger, Immensee, CH;
Thomas Neuenschwander, Zurich, CH;
Christian Studer, Lucerne, CH;
Hans Kocher, Udligenswil, CH;
Karl Weinberger, Immensee, CH;
Thomas Neuenschwander, Zurich, CH;
Inventio AG, Hergiswil, CH;
Abstract
An elevator has a car movable within a hoistway, a rack extending along the hoistway, the rack having a toothed profile with wave troughs and wave crests and a drive mounted in proximity to the rack so that the drive interacts with the rack to move the car. The drive includes a roller pinion unit fixedly mounted on a shaft and having a predetermined number of roller pinions arranged in a circle around the shaft and extending parallel to the shaft. The roller pinion unit interacts with the toothed profile of the rack. The drive also includes a motor unit configured to rotate the shaft. Optionally, the drive includes a brake unit configured to act on the shaft.