Method of fixing unmagnetized magnetizable members to a...

Details Method of fixing unmagnetized magnetizable members to a... Method of fixing unmagnetized magnetizable members to a...

2007-04-17

2007-04-17

Schuberg, Darren (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S268000

Reexamination Certificate

active

10250961

ABSTRACT:
A rotor disc assembly10for an AC machine includes a rotor disc20, permanent magnets30and a spider40. The rotor disc10has a circumferential lip22projecting from a surface thereof. The permanent magnets30are positioned in a circular array on the surface of the rotor disc20, with constant angular pitch, and so as to lie against the lip22. The spider includes an annular base portion41, with a plurality of arms42projecting radially outwards therefrom. The spider40is fixed to the surface of the rotor disc20such that each arm42is between and abuts a respective juxtaposed pair of the permanent magnets30. The arms42and the members30are each provided with cooperating wedge-shaped cross sections such that each arm42constrains the respective two permanent magnets30both axially and tangentially on the surface of the rotor disc20.

REFERENCES:
patent: 4167692 (1979-09-01), Sekiya et al.
patent: 4835850 (1989-06-01), Eckold et al.
patent: 5334898 (1994-08-01), Skybyk
patent: 6037696 (2000-03-01), Sromin et al.
patent: 0 734 112 (1996-09-01), None
patent: 60043051 (1985-03-01), None
patent: WO 98/47215 (1998-10-01), None

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