Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2008-05-20
2008-05-20
Nguyen, Tran (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S07500D
Reexamination Certificate
active
07375450
ABSTRACT:
A hub unit for use in electrically assisted bicycles has an improved effect to radiate heat from a stator. A hub (7) has inner teeth (66a) meshable with planetary gears (65) and a fixing support shaft (57) projecting from opposite ends of the hub and provided fixedly relative to a motor housing (5). The motor housing (5) has no cylindrical wall (8) covering the outer peripheral surface of the stator (3) but leaves the stator outer peripheral surface exposed to effectively release the heat generated by the windings of the stator.
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Adachi Ryohei
Tanaka Tatsuaki
Tomoshige Kazuhiro
Eckert Seamans Cherin & Mellott , LLC
Levy Philip E.
Nguyen Tran
Sanyo Electric Co,. Ltd.
Silverman Arnold B.
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