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:
Jan. 14, 1986
Filed:
Apr. 24, 1984
Masaharu Senoo, Narashino, JP;
Keizi Noma, Funabashi, JP;
Akira Saruta, Chiba, JP;
Masanori Yoshizaki, Yachiyo, JP;
Koichi Teshirogi, Narashino, JP;
Kouei Yaegashi, Funabashi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A novel rotor construction is disclosed, in which plural permanent magnets are arranged on the outer periphery of a rotor core, which are protected with a cover, and in which a member is placed at an axial end of the rotor core cast with end rings with a balance weight on the outside thereof. The protective cover protects the outer peripheries of the end rings and dampens the centrifugal force of the balance weight. Projections provided on the outer periphery of the member are located at the center of the permanent magnets to reduce the leakage magnetic fluxes between the permanent magnets.