Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2006-04-18
2006-04-18
Lam, Thanh (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S179000, C310S208000
Reexamination Certificate
active
07030523
ABSTRACT:
A vibration motor includes: a lower case provided with a lower board; an upper case coupled with the lower case; a four-pole magnet provided on the lower case; a shaft supported between the lower case and the upper case; a rotor rotatably supported by the shaft with an eccentricity, in which a pair of coils is provided in the rotor at an angle ranging form 135° to 142° between centerlines thereof; a commutator formed on a bottom of the rotor with six segments; and a pair of brushes having lower parts contacted with the lower board and upper parts contacted with the segments of the commutator at an angle of 90° therebetween.
REFERENCES:
patent: 6291915 (2001-09-01), Yamaguchi
patent: 6630759 (2003-10-01), Yamaguchi
patent: 6836039 (2004-12-01), Kweon et al.
patent: 2001-104882 (2001-04-01), None
Lam Thanh
LG Innotek Co. Ltd.
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