Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1998-11-10
2000-12-12
Ramirez, Nestor
Electrical generator or motor structure
Dynamoelectric
Rotary
310112, 310114, 310126, 310180, 310179, 310162, 310187, 310156, 310254, 310261, 318696, 318685, H02K 3714
Patent
active
061603309
ABSTRACT:
A three-phase stepping motor comprising: a rotation shaft rotatably supported by a pair of bearings provided in predetermined places of a housing so as to be in opposition to each other; a permanent-magnet rotor formed in a cylindrical shape so as to have south (S) and north (N) poles magnetized alternately in the direction of rotation on an outer circumferential portion of the rotor, or an induced magnetization rotor having S and N poles disposed alternately in the direction of rotation which are formed in a manner so that permanent magnets with the same polarity are fitted or formed so as to be identical in polarity at their surfaces in grooves formed parallelly to each other at a regular pitch in a surface of a magnetic body formed to be cylindrical in parallel to the rotation shaft and the cylindrical magnetic body is subjected to induced magnetization to form the S and N poles alternately in the surface of the cylindrical magnetic body; and a stator disposed so as to be in opposition to a surface of one of the rotors through a gap of a predetermined size, the stator having main poles the number of which is a multiple of 3, each of the main pole having a predetermined number of pole teeth and having a stator coil mounted thereon.
REFERENCES:
patent: 3599069 (1971-08-01), Welch
patent: 4031419 (1977-06-01), Spiesberger et al.
patent: 4206374 (1980-06-01), Goddijn
patent: 4234808 (1980-11-01), Geppert et al.
patent: 4663577 (1987-05-01), Satomi
patent: 4672253 (1987-06-01), Tajima et al.
patent: 4675564 (1987-06-01), Isozaki
patent: 4764697 (1988-08-01), Christiaens
patent: 4983867 (1991-01-01), Sakamoto
patent: 5097162 (1992-03-01), Wang
patent: 5128570 (1992-07-01), Isozaki
patent: 5289064 (1994-02-01), Sakamoto
patent: 5315192 (1994-05-01), Satomi
patent: 5321340 (1994-06-01), Tamaki et al.
patent: 5374865 (1994-12-01), Yoshimura et al.
patent: 5386161 (1995-01-01), Sakamoto
patent: 5532531 (1996-07-01), Sakamoto
patent: 5610492 (1997-03-01), Leung et al.
patent: 5747898 (1998-05-01), Yoshimura et al.
patent: 5780944 (1998-07-01), Sakamoto
Japan Servo Co., LTD
Lam Thanh
Ramirez Nestor
LandOfFree
Three-phase stepping motor and driving method therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Three-phase stepping motor and driving method therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Three-phase stepping motor and driving method therefor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-220935