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:
Aug. 05, 2025
Filed:
Jan. 27, 2020
Applicant:
Edwards Japan Limited, Chiba, JP;
Inventors:
Tsutomu Takaada, Chiba, JP;
Yongwei Shi, Chiba, JP;
Assignee:
Edwards Japan Limited, Chiba, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L 25/14 (2006.01); F16L 23/00 (2006.01);
U.S. Cl.
CPC ...
F16L 23/00 (2013.01); F16L 25/14 (2013.01); F05D 2250/14 (2013.01); F05D 2250/141 (2013.01); F05D 2250/52 (2013.01);
Abstract
Provided are a vacuum pump which can be reduced in size without reducing exhaust performance, and a connection port which is used in the vacuum pump. The connection port which connects the vacuum pump and an auxiliary pump includes an oval first opening connectable to the vacuum pump and a circular second opening connectable to the auxiliary pump, and a diameter dimension of the first opening is set to be smaller than a diameter dimension of the second opening in an axial direction of the vacuum pump.