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:
Jan. 10, 1978
Filed:
Mar. 07, 1973
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., , JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
318135 ; 310 12 ; 1041 / ;
Abstract
In a linear motor system in which the series of driving coils provided along a railway is divided into sections each including a plurality of coils, each section being fed through a power control switch which is closed in a sequential order, a plurality of such sections are grouped so that each group of sections is fed exclusively through one of a plurality of feeders from one of a plurality of power supplies.