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:
Dec. 27, 2016
Filed:
Jun. 11, 2010
Toshiki Yamaguchi, Kawanishi, JP;
Toshiki Yamaguchi, Kawanishi, JP;
SHIMADZU CORPORATION, Kyoto-shi, Kyoto, JP;
Abstract
A vacuum pump includes a rotor shaftthat is rotatably supported by a bearing and driven by a motorto rotate at a high speed, and a rotorthat is fastened to one end of the rotor shaftin axial direction thereof and is provided with an evacuating function portion. An engagement portion, in which the rotor shaftand the rotorare fastened, includes an engagement holeformed on one of the rotor shaftand the rotorand an engagement shaftformed on the other of the rotor shaftand the rotor. A filling memberis provided in a gap between the engagement holeand the engagement shaft, having shear strength lower than respective shear strengths of the rotorand the rotor shaft