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:
May. 26, 2020
Filed:
Nov. 02, 2016
Aisan Kogyo Kabushiki Kaisha, Obu-shi, Aichi, JP;
Eiji Nakamura, Handa, JP;
AISAN KOGYO KABUSHIKI KAISHA, Obu-shi, Aichi, JP;
Abstract
An impeller may include a plurality of blades disposed along a rotation direction in an outer circumferential portion of at least one end surface of two end surfaces of the impeller; a plurality of blade grooves; and an outer circumferential wall disposed at an outer circumferential edge and closing the plurality of grooves. The housing may include an opposing groove opposing a blade groove region and extending along the rotation direction of the impeller. In a plan view of the one end surface of the two end surfaces of the impeller, each of the plurality of the blades may be curved, and a central portion of each of the blades may be positioned frontward in the rotation direction of the impeller than both ends of the blade.