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:
Mar. 13, 2012
Filed:
Jul. 21, 2005
Michael P. Flynn, Avon, CT (US);
Michael P. Flynn, Avon, CT (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
An elevator door assembly () includes a positioner () for controlling an orientation of an elevator door panel () during movement between open and closed positions. The positioner () biases the door in a direction generally perpendicular to the desired direction of door movement. The disclosed example includes a first positioner member () that remains in a fixed position. A second positioner member () is supported for movement with the elevator door (). In disclosed examples, at least one of the positioner members () provides a magnetic field that results in the biasing force. In a disclosed example, opposing polarities on permanent magnets are arranged to provide a repulsive force between the positioner members (), which provides the biasing force on the elevator door.