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:
Sep. 16, 2003
Filed:
Mar. 22, 2002
Makoto Yokoyama, Toyosaka, JP;
Yoshihiro Takada, Chiyoda, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An air cleaner includes a centrifugal fan runner equipped with backward blades, a core plate connected to an axis of a motor; and a side plate being opposing the core plate. The backward blades, being inclined in an anti-rotational direction thereof, are provided at a distance in a circumferential direction, and the backward blades are bent in a position at distance of about ½-1/(3.5) of a length of the blade from an outer periphery thereof, so that an outlet portion thereof is inclined into a direction of rotation of the blade. An outlet angle of the outlet portion with respect to a tangential direction on an outer periphery of said side plate lies from about 40 degree to about 60 degree.