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:
Aug. 23, 2011
Filed:
Oct. 09, 2007
Applicants:
Yoshihiro Kataoka, Kusatsu, JP;
Keiji Aota, Kusatsu, JP;
Shin Nakamasu, Kusatsu, JP;
Inventors:
Assignee:
Daikin Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/27 (2006.01); H02K 21/14 (2006.01); F04B 39/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A compressor motor includes a rotor and a stator disposed radially outside of the rotor. The rotor includes a rotor core, and a plurality of magnets circumferentially arranged on the rotor core at center angles of equal intervals. The rotor core has an axial length L and a radial length D. Each of the magnets has a thickness t. L/D <0.7, and t>(1×K×N)/(L×D×P), where P is the number of poles, K is 100000, and N is a factor that depends on a compressor output.