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:
Sep. 03, 2019
Filed:
Dec. 28, 2016
Applicant:
Shimadzu Corporation, Kyoto, JP;
Inventors:
Assignee:
Shimadzu Corporation, Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/30 (2006.01); F04D 25/06 (2006.01); F04D 29/053 (2006.01); F04D 29/26 (2006.01); F16C 32/04 (2006.01); H02K 1/27 (2006.01); H02K 7/09 (2006.01); H02K 1/28 (2006.01); F04D 19/04 (2006.01); F04D 29/058 (2006.01);
U.S. Cl.
CPC ...
H02K 1/30 (2013.01); F04D 19/042 (2013.01); F04D 19/048 (2013.01); F04D 25/06 (2013.01); F04D 25/0606 (2013.01); F04D 29/053 (2013.01); F04D 29/058 (2013.01); F04D 29/26 (2013.01); F16C 32/0402 (2013.01); F16C 32/0425 (2013.01); H02K 1/272 (2013.01); H02K 1/28 (2013.01); H02K 7/09 (2013.01); H02K 1/2733 (2013.01);
Abstract
A vacuum pump for rotary driving a rotor by a motor to perform vacuum pumping, wherein a motor rotor of the motor includes a yoke fixed to a shaft of the rotor, and a permanent magnet held at the yoke, and the yoke includes a holding portion provided apart from the shaft and configured to hold the permanent magnet, and a pair of fitting portions provided respectively at both ends of the holding portion in an axial direction and bonded to the shaft by fitting, and a radial thickness dimension of each fitting portion is set less than that of the holding portion.