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:
Dec. 06, 2011
Filed:
Jun. 20, 2003
Jae-hyuk OH, Tolland, CT (US);
Pei-yuan Peng, Ellington, CT (US);
Howard Winston, Woodbury, CT (US);
Alan Finn, Hebron, CT (US);
Jae-Hyuk Oh, Tolland, CT (US);
Pei-Yuan Peng, Ellington, CT (US);
Howard Winston, Woodbury, CT (US);
Alan Finn, Hebron, CT (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
An elevator includes a car follower associated with each of a pair of guide rails, and carrying electromagnets which are spaced from electromagnets on an elevator car. The electromagnets on the car and car follower create a repulsive force tending to center the car between the car follower electromagnets associated with the two guide rails. Preferably, the car follower electromagnets are interconnected into a single car follower such that they move together.