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:
May. 23, 2023
Filed:
Mar. 19, 2018
Applicant:
Edwards Japan Limited, Chiba, JP;
Inventors:
Manabu Nonaka, Chiba, JP;
Hideki Enosawa, Chiba, JP;
Assignee:
Edwards Japan Limited, Chiba, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 19/04 (2006.01); F04D 29/32 (2006.01); F04D 29/70 (2006.01);
U.S. Cl.
CPC ...
F04D 29/701 (2013.01); F04D 19/04 (2013.01); F04D 19/042 (2013.01); F04D 29/324 (2013.01); F05B 2240/30 (2013.01);
Abstract
A vacuum pump includes a plurality of exhaust stages provided between an inlet port and an exhaust port so as to function as means for exhausting gas molecules, and a number of blades provided between the inlet port and an uppermost exhaust stage of the plurality of exhaust stages so as to rotate together with a rotary blade that constitutes the uppermost exhaust stage as a particle transport stage for transporting particles in an exhaust direction of the gas molecules, the number being smaller than the number of rotary blades that constitutes the uppermost exhaust stage.