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. 14, 1992
Filed:
Mar. 13, 1990
Satoru Umeki, Hitachi, JP;
Hitachi, Ltd., Ibaraki, JP;
Hitachi Automotive Engineering Co., Ltd., Tokyo, JP;
Abstract
Lower coils (5b) and upper coils (5a) are inserted to slots (12) of a cylindrical armature core (4). The upper coils are used as crossover lines (102a) at the side of commutator (10) and form commutator segments. The crossover lines are approximately deviated by a pole pitch (yf) at the commutator and inserted to other slots as lower coils. The lower coils are used again as crossover lines and deviated approximately by the pole pitch at the opposite side of the commutator so as to be inserted again to the slots as the lower coils. An insulating resin (11) are forced to push into inner peripheral sides of the armature core, and the crossover lines forming a squirrel cage type shape and extending cylindrically from the core.