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:
Oct. 25, 2022
Filed:
Feb. 19, 2020
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Rimpei Kawashita, Tokyo, JP;
Shimpei Yokoyama, Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
An oil field pump is installed within a pipe that connects to an oil field, and feeds accumulated extraction oil in a predetermined direction. The oil field pump includes a rotor with an impeller, a stator installed on the outer circumferential of the rotor and that forms a flow path for passing the extraction oil between the stator and the rotor and that includes a diffuser on the downstream side of the impeller, a static pressure bearing device installed between the rotor and the stator and that supports the load in the radial direction, and a supply flow path that supplies, to the static pressure bearing device, a portion of the extraction oil flowing along the inner side in the radial direction of the path.