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. 18, 1997
Filed:
Apr. 08, 1994
Jerome F Jaminet, South Windsor, CT (US);
Zbigniew Piech, East Hampton, CT (US);
Frank Guliuzza, Jr, Wallingford, CT (US);
Thomas M McHugh, Farmington, CT (US);
Edward E Ahigian, West Hartford, CT (US);
Thomas He, Unionville, CT (US);
Richard E Peruggi, Glastonbury, CT (US);
Thomas M Kowalczyk, Farmington, CT (US);
Richard E Kulak, Bristol, CT (US);
David W Barrett, East Hartland, CT (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
The door or doors of an elevator are driven through their opening and closing cycles by one or more linear induction motor (LIM) assemblies in which the primary winding component of the LIM assembly is secured to the elevator cab structure and the LIM secondary component is secured to the cab door. If the cab has two oppositely moving doors, there will preferably be two separate motor drives, one for each door. In one embodiment, the motor components are arranged so as to create a normal force which is horizontal; and in another embodiment, the normal force created is vertical. A primary motor mount bracket is used which secures the primary winding component to the overhead component of the cab structure.