Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2006-02-28
2006-02-28
Arbes, Carl J. (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S056500, C029S596000, C029S597000, C029S605000, C029S735000, C242S361100, C242S362200, C242S363000, C242S433300, C310S219000, C310S234000
Reexamination Certificate
active
07003867
ABSTRACT:
A core includes a ring body and a plurality of teeth. The teeth extend radially outward form the outer circumference of the ring body. The core is formed by assembling a first core member and a second core member. Each core member has part of the teeth the number of which is half the total number of the teeth. Each tooth includes a tooth body about which the coil is wound, and a magnetism converging portion provided at the distal end of the tooth body. The tooth height of each tooth body gradually increases from a distal section to a proximal section of the tooth body. The tooth width gradually decreases from the distal section to the proximal section. The wire is wound about each of the teeth of the first and second core members. Then, the first and second core members are assembled to form the core. Accordingly, a rotor core having a high coil accommodation efficiency and a high coil space factor is obtained.
REFERENCES:
patent: 3980243 (1976-09-01), Schulman
patent: 5100071 (1992-03-01), Hongo et al.
patent: 6532645 (2003-03-01), Becherucci et al.
patent: 2004/0113511 (2004-06-01), Schmidt et al.
patent: 09-019095 (1997-01-01), None
Katou Akiyoshi
Okamoto Atsuo
Totsuka Takerou
Yamamoto Toshio
Arbes Carl J.
Asmo Co. Ltd.
Sheridan & Ross P.C.
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