Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1994-01-25
1996-02-20
LaBalle, Clayton E.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 42, 310 90, 310 67R, H02K 2112, H02K 1503, H02K 714, H02K 708
Patent
active
054931614
ABSTRACT:
A motor provided with a magnetic fluid bearing device for suppressing vibration and irregular rotation as well as preventing the magnetic fluid from being scattered from a bearing portion and the inside of the motor. The motor includes a rotor having a polygon mirror mounted thereon, a stator unit having driving coils, a rotor position detector and a rotor revolution detector attached thereto, a magnetic fluid bearing unit having a magnetic seal and a dynamic pressure seal attached thereto and a magnetic bearing. A triple seal structure for magnetic fluid which includes a first fluid seal constituted by the seals of the bearing unit, a second fluid seal constituted by a magnet of the rotor and a third fluid seal constituted by a magnet of the seal magnet is provided in the motor.
REFERENCES:
patent: 2767339 (1950-09-01), Hatfield
patent: 4250423 (1981-02-01), Linscott, Jr.
patent: 4523800 (1985-06-01), Yamashita et al.
patent: 4585967 (1986-04-01), Mayer et al.
patent: 4607182 (1986-08-01), Ballhaus
patent: 4694213 (1987-09-01), Gowda et al.
patent: 4805972 (1989-02-01), Tanaka et al.
patent: 4866324 (1989-09-01), Yuzawa et al.
patent: 4905110 (1990-02-01), Krum et al.
patent: 4916346 (1990-04-01), Kliman
patent: 4938611 (1990-07-01), Nii et al.
patent: 4958098 (1990-09-01), Sarraf
patent: 5045738 (1991-09-01), Hishida et al.
patent: 5047677 (1991-09-01), Mineta et al.
patent: 5095238 (1992-03-01), Suzuki et al.
patent: 5103335 (1992-04-01), Sugiura
patent: 5142180 (1992-08-01), Moore et al.
patent: 5158390 (1992-10-01), Ito et al.
Akashi Sueo
Hiroyama Hiroo
Ishizaki Kosho
Kawaike Kazuhiko
Nii Katsutoshi
Hitachi , Ltd.
LaBalle Clayton E.
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