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:
Jul. 07, 1992
Filed:
Jun. 19, 1991
Applicant:
Inventors:
William C Beattie, Down, IE;
W John Ballantyne, Kingston, CA;
Assignee:
Urban Transportation Development Corp., Ltd., Toronto, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
104294 ; 104290 ; 310 12 ; 318135 ;
Abstract
A reaction rail assembly, for forming a secondary of linear induction motor, includes an elongate conductive member of uniform cross-section, and core formed from a plurality of elongate bars. The bars extend parallel to the conductive member, and adjacent bars are insulated from one another, so as to reduce eddy current losses. The bars have corresponding width and height, and can be square. The core is located adjacent the conductive member, so as, in use, to complete a magnet circuit between a primary and secondary of a linear induction motor.