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:
Dec. 31, 2019
Filed:
Dec. 22, 2015
Eagle Industry Co., Ltd., Tokyo, JP;
Shinya Yamamoto, Tokyo, JP;
Satoshi Yasu, Tokyo, JP;
Takeshi Hosoe, Tokyo, JP;
Yuichiro Tokunaga, Tokyo, JP;
Keiichi Chiba, Tokyo, JP;
EAGLE INDUSTRY CO., LTD., Tokyo, JP;
Abstract
A plain bearing () is fixed to a shaft hole () of an impeller () of the pump () so as to rotatably support the impeller () with respect to the shaft (), and is restricted from moving in an axial direction by an annular restrictor () fixed to the shaft (). On an end face () of the plain bearing () facing the restrictor (), a lubrication groove () connecting a radially inner side and a radially outer side of the end face () to supply cooling water onto the end face () for lubrication, and a dynamic pressure generating groove () that introduces a flow of cooling water created by rotation of the impeller () to generate a dynamic pressure, are provided. The present bearing suppresses an increase in rotation torque of the impeller () during high speed rotation.