Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2008-04-14
2011-12-20
Leung, Quyen (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S043000, C310S156080, C310S156120, C310S156130
Reexamination Certificate
active
08080907
ABSTRACT:
The present invention provides a rotor of a brushless (BL) motor, including: a high-strength engineering plastic member formed by injection-molding high-strength engineering plastic around a concavo-convex portion12aformed on the outer circumferential surface of a rotary shaft; a sound-absorbing resin element formed by injection-molding a sound-absorbing resin around the high-strength engineering plastic member; a cylindrical ring magnet assembly including a plurality of axially aligned ring-shaped magnets, each of which has a plurality of indented grooves20aand20bformed on both end edges of the inner circumferential surface thereof; and a high-strength plastic member formed by injection-molding a high-strength plastic between the sound-absorbing resin element and the ring magnet assembly, the high-strength plastic member having a plurality of protrusions formed on the outer circumferential surface thereof in such a fashion that each protrusion corresponds to an associated one of the indented grooves of the ring-shaped magnets.
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Jeung Young-Chun
Leung Quyen
Mok Alex W
Staas & Halsey , LLP
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