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:
May. 13, 1997
Filed:
Apr. 12, 1995
Syuji Shimoyama, Kasakakemachi, JP;
Mitsuba Electric Manufacturing Co., Ltd., Gunma, JP;
Abstract
A flat disk type commutator 1 according to the embodiment comprises: a boss 16 which is formed into a thick approximately disk-shape; a plurality of segments 21, each of which is formed into an approximate sector, which are radially arranged on the surface of the boss 16 with an approximately equally space; a riser bar 4 which is electrically connected to each segment 21, as a conductive base material; slits 20 providing a state in which adjacent segments 21 are insulated from each other. A recess 11 is formed at each segment 21. A projecting portion 6 is formed at the riser bar 4. The projecting portion 6 is inserted to the recess 11 in a state in which a copper powder layer 12 and a solder layer 14 is formed at the recess 11, and is soldered. Each riser bar 4 is in a state to electrically connect with the segment 21 by the copper powder layer 12 and the solder layer 14.