Electromagnetic thrust bearing for coupling a rotatable member t

Details Electromagnetic thrust bearing for coupling a rotatable member t Electromagnetic thrust bearing for coupling a rotatable member t

1992-04-30

1993-10-05

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

H02K 709

Patent

active

052508650

ABSTRACT:
An electromagnetic thrust bearing couples a rotatable member relative to a stationary member utilizing a combination of arcuately shaped constant flux permanent magnets and controllable electromagnets, each physically associated with the stationary member. More particularly, the rotatable member comprises a shaft having a radially extending thrust disc fixed thereto. A pair of solenoids are disposed about the rotatable member in facing relation on opposite sides of the thrust disc. The facing solenoids are capable of generating a controllable electromagnetic field. A constant flux high density magnetic field is generated between the solenoid housings and the thrust disc by a pair of axially polarized arcuately shaped permanent magnets disposed on each side of the thrust disc. Each pair of permanent magnets has an inner magnet and an outer magnet radially separated from one another. Each permanent magnet is linked magnetically to the adjacent solenoid housing by respective ferromagnetic pole pieces. A sensor determines the axial positioning of the rotatable member relative to the stationary member and provides input for controlling the positioning of the thrust disc by varying the magnetic flux generated by the solenoids.

REFERENCES:
patent: 3890019 (1975-06-01), Boden et al.
patent: 3976339 (1976-08-01), Sabnis
patent: 4037886 (1977-07-01), Boden et al.
patent: 4072370 (1978-02-01), Wasson
patent: 4080012 (1978-03-01), Boden et al.
patent: 4128280 (1978-12-01), Purtschert
patent: 4180296 (1979-12-01), Habermann
patent: 4405286 (1983-09-01), Studer
patent: 4563046 (1986-01-01), Shimamoto
patent: 4583794 (1986-04-01), Takahara et al.
patent: 4597613 (1986-07-01), Sudo
patent: 4626764 (1986-12-01), Habermann et al.
patent: 4652780 (1987-03-01), Murakami et al.
patent: 4812694 (1989-03-01), Fremery
patent: 4866318 (1989-09-01), Habermann et al.
patent: 4885491 (1989-12-01), Hiyama et al.
patent: 4889039 (1989-12-01), Miller
patent: 4895023 (1990-01-01), Roubinet et al.
patent: 4900962 (1990-02-01), Hockney et al.
patent: 4918345 (1990-04-01), Vaillant de Guelis et al.
patent: 4920290 (1990-04-01), Murakami et al.
patent: 4928561 (1990-05-01), Fouche
patent: 4942321 (1990-07-01), Kanemitsu
patent: 4946345 (1990-08-01), Watanabe et al.
patent: 4947067 (1990-08-01), Habermann et al.
patent: 4956571 (1990-09-01), Gordon et al.
patent: 4964147 (1990-10-01), Laurent et al.
patent: 4976177 (1990-12-01), Fouche
patent: 4982126 (1991-01-01), Jolivet et al.
patent: 4983869 (1991-01-01), Vaidya et al.
patent: 4988906 (1991-01-01), Littlefield
patent: 5012359 (1991-04-01), Kohno et al.
patent: 5021697 (1991-06-01), Kralick
patent: 5027280 (1991-06-01), Ando et al.
patent: 5072146 (1991-12-01), New

Affiliated with

Also associated with

Rating

Electromagnetic thrust bearing for coupling a rotatable member t does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electromagnetic thrust bearing for coupling a rotatable member t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electromagnetic thrust bearing for coupling a rotatable member t will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1006987