Method for encapsulating permanent magnets of a rotor of a...

Details Method for encapsulating permanent magnets of a rotor of a... Method for encapsulating permanent magnets of a rotor of a...

2011-01-25

2011-01-25

Leung, Quyen (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156010, C310S156070, C310S156280, C310S156310, C310S340000

Reexamination Certificate

active

07876011

ABSTRACT:
A method is provided for encapsulating permanent magnets of a rotor of a generator. Magnets, which are shorter than a rotor yoke in an axial direction, are placed outside of the yoke leaving a short portion of the yoke free at both ends. Spacers of a non-magnetic material are placed between the magnets. End barriers are placed on the free portions of the yoke. A thin sheet of a non-magnetic material is folded around the magnets and the spacers, covering the entire length of the rotor, including the barriers. An air tight membrane is placed on the outside of the sheet and sealed to the ends of the yoke so that the membrane and the yoke together form an air tight enclosure. A vacuum is applied to the air tight enclosure between the membrane and the yoke. Resin is infused into the air tight enclosure and set.

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Machine Translation JP2005295686 (2005), JP11146585 (1999), Derwent Translation Purpuse and Constitution JP01270756 (1989).

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