Machine tool

Details Machine tool Machine tool

2005-01-11

2005-01-11

Mullins, Burton S. (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S191000, C310S059000

Reexamination Certificate

active

06841911

ABSTRACT:
A machine tool provided with an electric motor which can maintain the fixed output power in a wide speed range. The electric motor has a stator having a primary winding, and a rotor having a field magnet and a shaft, said field magnet comprising a first field magnet having different polarity magnetic poles sequentially arranged in a rotating direction and a second field magnet having different polarity magnetic poles sequentially arranged in a rotating direction, and a mechanism for shifting one field magnet in axial and rotating directions with respect to the other field magnet, whereby a composite magnetic field of said first and said second field magnets is changed.

REFERENCES:
patent: 5177391 (1993-01-01), Kusase
patent: 5387061 (1995-02-01), Barkman et al.
patent: 5562528 (1996-10-01), Ueyama et al.
patent: 5821710 (1998-10-01), Masuzawa et al.
patent: 6508614 (2003-01-01), Ozaki et al.
patent: 6541877 (2003-04-01), Kim et al.
patent: 20020047319 (2002-04-01), Ferrari et al.
patent: 20020116961 (2002-08-01), Kim et al.
patent: 20020117922 (2002-08-01), Kim et al.
patent: 20020117926 (2002-08-01), Joong et al.
patent: 20020117927 (2002-08-01), Kim et al.
patent: 20020117933 (2002-08-01), Joong et al.
patent: 20020158520 (2002-10-01), Takamune et al.
patent: 1085644 (2000-08-01), None
patent: 2001069609 (2001-03-01), None
patent: 200262488 (2002-09-01), None
patent: 2002262487 (2002-09-01), None
patent: 2002262489 (2002-09-01), None
patent: 2002262493 (2002-09-01), None
patent: 2002262494 (2002-09-01), None
patent: 2003244874 (2003-08-01), None

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