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. 03, 2013
Filed:
Apr. 30, 2009
Hironobu Teraoka, Sakai, JP;
Shimei Tei, Sakai, JP;
Hironobu Teraoka, Sakai, JP;
Shimei Tei, Sakai, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
A crossflow fan includes an impeller formed by plate-like blades. Each bladeis inclined such that the outer edgeis located on the leading side of the inner edgewith respect to the rotation direction of the impeller. The face of each bladethat is located on the leading side of the rotation direction forms a positive pressure surface, and a face located on the trailing side forms a negative pressure surface. Notchesare formed at the outer edgeof the blade. The notchesare arranged at predetermined intervals along the rotation axis of the impeller. A basic shape sectionis formed between each adjacent pair of the notches. The blade thickness Lin the vicinity of the bottomof each notchis smaller than the blade thickness of the basic shape sectionadjacent to the notch