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:
Jul. 05, 2016
Filed:
May. 25, 2011
Yukishige Shiraichi, Osaka, JP;
Masaki Ohtsuka, Osaka, JP;
Masaya Takahashi, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A cross-flow fan includes a plurality of fan blades. The fan blade has an inner edge portion arranged on an inner circumferential side and an outer edge portion arranged on an outer circumferential side. In the fan blade, a blade surface extending between the inner edge portion and the outer edge portion is formed. As the fan rotates, an air flow which flows between the inner edge portion and the outer edge portion is generated over the blade surface. The fan blade has such a blade cross-sectional shape that a recess is formed in the blade surface. The recess is arranged at a position closer to the outer edge portion than to the inner edge portion and formed to extend from one end to the other end of the fan blade in a direction of a rotation axis of the fan.