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:
Nov. 17, 2020
Filed:
Mar. 24, 2016
Ebara Corporation, Tokyo, JP;
Masahito Kawai, Tokyo, JP;
Hiromi Sakacho, Tokyo, JP;
Masashi Obuchi, Tokyo, JP;
Hiroshi Uchida, Tokyo, JP;
Miho Isono, Tokyo, JP;
Kenta Tokairin, Tokyo, JP;
EBARA CORPORATION, Tokyo, JP;
Abstract
The present invention relates to a volute pump for delivering a liquid containing fibrous substances. The volute pump includes an impeller () having a vane (), and an impeller casing () which houses the impeller () therein. The impeller casing () includes a volute chamber (), a suction port () and a discharge port () which communicate with the volute chamber (), and a tongue portion () which forms a starting portion of the volute chamber (). A groove (), extending from the suction port () to the volute chamber (), is formed in an inner surface of the impeller casing (). An intersection point (B), where a terminal end of the vane () passes across the groove () as viewed from an axial direction of the impeller (), is located at an opposite side from the tongue portion () with respect to a central point of the impeller ().