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. 12, 2023
Filed:
Mar. 21, 2022
Applicant:
Shimadzu Corporation, Kyoto, JP;
Inventor:
Taiki Nishimura, Kyoto, JP;
Assignee:
Shimadzu Corporation, Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/32 (2006.01); F04D 29/52 (2006.01); F04D 19/04 (2006.01); F04D 27/00 (2006.01);
U.S. Cl.
CPC ...
F04D 27/001 (2013.01); F04D 19/04 (2013.01); F04D 19/042 (2013.01); F04D 29/32 (2013.01); F04D 29/522 (2013.01);
Abstract
A vacuum pump comprises: a rotor rotatable in a predetermined rotation direction; and a case housing the rotor; and a fixed component arranged facing an inner wall of the case. A clearance is formed between the inner wall of the case and the fixed component, and a groove allowing communication between the clearance and an exhaust path in the case is formed at either the inner wall of the case or the fixed component.