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:
Nov. 24, 1998
Filed:
Nov. 07, 1996
Applicant:
Inventors:
James A Rivera, Bristol, CT (US);
Michael J Tracey, Cromwell, CT (US);
Assignee:
Otis Elevator Company, Farmington, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B66B / ;
U.S. Cl.
CPC ...
187316 ; 187289 ; 310 12 ;
Abstract
A motor secondary in a linear induction motor used for opening and closing doors in an elevator system includes a secondary guide system having a first secondary guide and a second secondary guide. The first secondary guide is disposed on a bottom longitudinal edge of the motor secondary and the second secondary guide is disposed on a top longitudinal edge of the motor secondary. The guides space apart the motor secondary from the motor primary and establish small and constant running clearances therebetween.