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:
Feb. 15, 2022
Filed:
Dec. 08, 2017
Applicant:
Edwards Japan Limited, Chiba, JP;
Inventors:
Keita Mitsuhashi, Chiba, JP;
Tooru Miwata, Chiba, JP;
Assignee:
Edwards Japan Limited, Chiba, JP;
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/52 (2006.01); F04D 19/04 (2006.01);
U.S. Cl.
CPC ...
F04D 29/522 (2013.01); F04D 19/04 (2013.01); F05D 2260/60 (2013.01);
Abstract
A vacuum pump includes a housing having an inlet port, a stator column provided upright inside the housing, a rotating body having a shape surrounding an outer periphery of the stator column, a support means for rotatably supporting the rotating body, and a driving means for driving the rotating body to rotate, wherein gas is sucked in from the inlet port by rotation of the rotating body, and the stator column is constituted of a cast material of aluminum alloy having a mechanical material property of an elongation of 5% or more.