Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2011-04-19
2011-04-19
Leung, Quyen (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S220000, C310S197000, C310S219000, C310S252000, C310S221000, C310S222000, C310S223000, C310S224000, C310S225000
Reexamination Certificate
active
07928629
ABSTRACT:
A stator has four or more magnetic poles. A commutator has a plurality of segments arranged in the circumferential direction and a short-circuit conductor for short-circuiting predetermined segments from among these segments. Each segment has an angular width WS, and there is a gap of an angular width WU between the segments. A substantial angular width WB of each of an anode brush and a cathode brush satisfies (n−1)(WS+WU)+WU<WB<n(WS+WU)+WU, where n is an integer no less than two. A plurality of coils are each connected to the corresponding one of the segments in order to form n closed loops. The closed loops each pass through the corresponding segments and are electrically independent of each other.
REFERENCES:
patent: 4437029 (1984-03-01), Ban et al.
patent: 4583016 (1986-04-01), Ban et al.
patent: 4876472 (1989-10-01), Shiraki et al.
patent: 5202599 (1993-04-01), Kao
patent: 6127759 (2000-10-01), Tanaka et al.
patent: 6703751 (2004-03-01), Tanaka et al.
patent: 6819025 (2004-11-01), Egawa et al.
patent: 7239063 (2007-07-01), Yamamoto et al.
patent: 7525232 (2009-04-01), Latz et al.
patent: 2002/0070625 (2002-06-01), Katoh et al.
patent: 2004/0145268 (2004-07-01), Yamamoto et al.
patent: 2005/0029894 (2005-02-01), Egawa et al.
patent: 2007/0018530 (2007-01-01), Yamamoto et al.
patent: 2003-259582 (2003-09-01), None
patent: 2004-88915 (2004-03-01), None
patent: WO 2005020390 (2005-03-01), None
Aoyama Tomohiro
Ito Yasuhide
Yamamoto Toshio
Asmo Co. Ltd.
Kenerly Terrance
Leung Quyen
Marsh & Fischmann & Breyfogle LLP
LandOfFree
Direct current motor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Direct current motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Direct current motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2643404