Direct-current motor

Details Direct-current motor Direct-current motor

2007-11-26

2011-10-25

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

Reexamination Certificate

active

08044545

ABSTRACT:
To provide a DC motor in which the rattling and the axial deviation of a rotor are restrained without increasing the axial dimension of the motor.This DC motor comprises a stator (2) on which coils (4) are provided, a rotor (8) so disposed as to be opposed to the inner periphery of the stator (2) and having magnetic poles, a current-carrying part provided at one end of the rotor (8) and transferring the current fed from a power supply to the coils (4) of the stator (2), a sleeve bearing (6) holding the rotor (8), and a ball bearing (7) holding the rotor (8) and having a load-carrying capacity larger than that of the sleeve bearing (6). The outer ring of the ball bearing (7) is positioned by the stator (2), and the inner ring of the ball bearing (7) is positioned by the rotor (8).

REFERENCES:
patent: 4629919 (1986-12-01), Merkle
patent: 4773262 (1988-09-01), Girard et al.
patent: 5683183 (1997-11-01), Tanaka et al.
patent: 6091568 (2000-07-01), Gilliland
patent: 6365994 (2002-04-01), Watanabe et al.
patent: 6378839 (2002-04-01), Watanabe et al.
patent: 6488259 (2002-12-01), Fujita et al.
patent: 1806376 (2006-07-01), None
patent: 53-092405 (1978-08-01), None
patent: 62-134769 (1987-08-01), None
patent: 05-252683 (1993-09-01), None
patent: 06335226 (1994-12-01), None
patent: 2000-037069 (2000-02-01), None
patent: 2000-230657 (2000-08-01), None
patent: 2000-324745 (2000-11-01), None
patent: 2002-037104 (2002-02-01), None
patent: 2003232424 (2003-08-01), None
patent: 2004260950 (2004-09-01), None
patent: 2005-218146 (2005-08-01), None
patent: 2005-261029 (2005-09-01), None
patent: 2006-271193 (2006-10-01), None
patent: 2006340553 (2006-12-01), None
patent: 2007014187 (2007-01-01), None
patent: 01-05018 (2001-01-01), None
patent: 03/019749 (2003-03-01), None
Notice of Reason for Rejection mailed Sep. 21, 2009 in corresponding Japanese Patent Application No. 2008-525289.
Interrogation mailed Apr. 27, 2010 in corresponding Japanese Patent Application No. 2008-525289.

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