The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 17, 2007
Filed:
Jan. 10, 2002
Lawrence Haydock, Peterborough, GB;
Nazar Al-khayat, Rutland, GB;
Neil Brown, Holbeach, GB;
Jeremy Owen Dowdall, Rutland, GB;
John Ernest Clive Bean, Borne, GB;
Stephen Frederick Allen, Stamford, GB;
Cleveland Mills, Bourne, GB;
Lawrence Haydock, Peterborough, GB;
Nazar Al-Khayat, Rutland, GB;
Neil Brown, Holbeach, GB;
Jeremy Owen Dowdall, Rutland, GB;
John Ernest Clive Bean, Borne, GB;
Stephen Frederick Allen, Stamford, GB;
Cleveland Mills, Bourne, GB;
Newage International Limited, Lincolnshire, GB;
Abstract
A rotor disc assemblyfor an AC machine includes a rotor disc, permanent magnetsand a spider. The rotor dischas a circumferential lipprojecting from a surface thereof. The permanent magnetsare positioned in a circular array on the surface of the rotor disc, with constant angular pitch, and so as to lie against the lip. The spider includes an annular base portion, with a plurality of armsprojecting radially outwards therefrom. The spideris fixed to the surface of the rotor discsuch that each armis between and abuts a respective juxtaposed pair of the permanent magnets. The armsand the membersare each provided with cooperating wedge-shaped cross sections such that each armconstrains the respective two permanent magnetsboth axially and tangentially on the surface of the rotor disc.