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. 11, 2017
Filed:
Jun. 11, 2013
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka-shi, Osaka, JP;
Inventors:
Ko Inagaki, Shiga, JP;
Noboru Iida, Shiga, JP;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 35/04 (2006.01); F04B 17/03 (2006.01); F04B 39/02 (2006.01); F04B 39/14 (2006.01);
U.S. Cl.
CPC ...
F04B 17/03 (2013.01); F04B 35/04 (2013.01); F04B 39/0246 (2013.01); F04B 39/14 (2013.01);
Abstract
A hermetic compressor includes: a main bearing () which supports a main shaft () of a shaft (); and a thrust ball bearing at an upper end portion of the main bearing (). A rotor () is fixed to the main shaft () via a flange. A rotor core () has a magnetic center displaced upward relative to the magnetic center of a stator core () so that a downward magnetic attractive force is applied between the rotor () and the stator (). Accordingly, a contact load between steel balls and upper and lower races in the thrust ball bearing is appropriately maintained.