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. 06, 2011
Filed:
Aug. 17, 2007
Masaki Ikeya, Obu, JP;
Toshihiko Yamauchi, Obu, JP;
Yuuichi Murakoshi, Obu, JP;
Aisan Kogyo Kabushiki Kaisha, Obu-shi, Aichi-ken, JP;
Abstract
A disc shaped impeller may comprise an upper face and a lower face. Concavities may be repeatedly arranged along a circumferential direction on the upper face and the lower face. Each concavity may include a front surface, a back surface, an inner surface, an outer surface and a bottom surface. Each front surface may include a front-inner area formed between an inner edge of the front surface and a middle portion of the front surface. Each front-inner area may be formed in a convex shape when viewed as a longitudinal cross-section. The longitudinal cross-section is defined as a cross-section through a longitudinal plane disposed so as to be aligned along the circumferential direction.