Back to results
US 4,674,178 AGranted
Method of fabricating a permanent magnet rotor
AssigneeSundstrand Corporation
InventorNavinchandra R. Patel
Life of this patent
Estimating the term…
Abstract
Loose or frayed fibers at the axial end of a fibrous wrap 42 about the periphery of rotor hub 10 mounting permanent magnets 22 are avoided by placing steps 40 between first and second diametral sections 36, 38 in side plates 32, 34 sandwiching the magnets 22 with the wrap preventing radial displacement of the magnets and the side plates preventing axial displacement.
Claims4
A method of fabricating a permanent magnet rotor for use in a dynamo electric machine comprising the steps of
- (a) providing a rotor hub having an axis;
- (b) affixing magnets to said hub at circumferentially spaced locations;
- (c) locating filler material between said magnets;
- (d) applying axially spaced side plates having facing surfaces to said hub to sandwich said magnets and said filler material therebetween and such that an annular, radially outwardly opening recess exists between the facing surfaces of said side plates, said recess having a radially outwardly opening mouth;
- (e) circumferentially winding a fiber in a curable resin about the structure resulting from step (d), both within and to each side of said recess until said recess is at least completely filled;
- (f) curing the resin;
- (g) removing all fiber and resin radially and/or axially outwardly of the mouth of said recess to provide a cylindrical periphery for said rotor.
4 more elements
Dependencies are inferred from the claim text.