Brushless DC motor and refrigerant compressor employing the motor

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United States of America Patent

PATENT NO 6703748
APP PUB NO 20020130581A1
SERIAL NO

10145158

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A stator core for a concentrated winding type brushless DC motor that has a plurality of spaced teeth extending inwardly of the core outer diameter to a core inner diameter to define slots between two adjacent teeth for a winding. Each tooth has right and left distal ends projecting in opposite directions transverse to the tooth with the opposite distal ends of two adjacent teeth each being linear and defining an aperture into a slot between the two teeth. The distal end of each tooth also has an angled edge at the side facing the core outer diameter so that the distal end is wider at the aperture than at the point where the distal end extends from the tooth. Also, there is a distance T between a line connnecting the end points of the right and left distal ends of a tooth facing the core outer diameter at the aperture defined by each said distal end and a tangent line at an inner core diameter of the tooth and such that T.gtoreq.0.

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Patent Owner(s)

Patent OwnerAddress
SANYO ELECTRIC CO LTDOSAKA JAPAN OSAKA

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arai, Kazuhiko Gunma, JP 83 2096
Igarashi, Keijiro Gunma, JP 11 302
Takezawa, Masaaki Gunma, JP 16 226

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