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. 19, 2010
Filed:
Sep. 30, 2005
Hironobu Teraoka, Sakai, JP;
Hirohiko Matsushita, Sakai, JP;
Tadashi Ohnishi, Sakai, JP;
Hideshi Tanaka, Kusatsu, JP;
Kouzou Yoshinaga, Kusatsu, JP;
Hironobu Teraoka, Sakai, JP;
Hirohiko Matsushita, Sakai, JP;
Tadashi Ohnishi, Sakai, JP;
Hideshi Tanaka, Kusatsu, JP;
Kouzou Yoshinaga, Kusatsu, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
An impeller is provided for a blower having a blade (), a plurality of notches () provided at predetermined intervals on a side edge of the blade (), and a plurality of smooth portions () each provided between a pair of the notches (). Since a transverse vortex discharged from the side edge of the blade (), and on a large scale, is organized by vertical vortexes formed in the notches () on a small scale so as to be segmented into stable transverse vortexes, it becomes possible to reduce aerodynamic noise.