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. 13, 1999
Filed:
Jan. 29, 1997
Michael Leo McClelland, Calverley, GB;
Switched Reluctance Drives Limited, North Yorkshire, GB;
Abstract
A reluctance motor rotor is formed by sandwiching a stack of thin ferromagnetic laminations between two end caps. Each lamination has a series of slots formed in it, with the ferromagnetic material between these slots providing a flux guide. A rib is formed around the periphery of each lamination, thereby enclosing the slots. The slots are then filled with an epoxy resin through holes in the end cap. The resin, which is initially in the liquid state, is then cured in an oven. Once the resin is hard, the outer rib can be machined off to expose the resin. A rotor formed in this manner exhibits significantly higher output than prior art rotors of similar dimensions using magnetic bridges, and is relatively cheap to produce.