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. 05, 2000
Filed:
Oct. 01, 1998
Tominori Ishikawa, Niigata-ken, JP;
Yuji Toyama, Niigata-ken, JP;
Makoto Yokoyama, Toyosaka, JP;
Yoshihiro Takada, Ibaraki-ken, JP;
Keiichi Honma, Niigata-ken, JP;
Osamu Kawasaki, Niigata-ken, JP;
Masayosi Inoue, Niigata-ken, JP;
Kazunari Sugai, Niigata-ken, JP;
Jun Tazawa, Niigata-ken, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Techno Engineering Co., Ltd., Tokyo, JP;
Abstract
An air cleaner includes a housing having an upper wall and side walls, an air filter mounted with respect to the housing, a fan including a vane-wheel having a plurality of vanes, a supporting plate extending substantially between at least two side walls for supporting the fan. An air flow directional member directs an air flow output from the fan. The vane is formed to have a winglike cross-section, and the vane-wheel includes not more than four vanes. The vane-wheel has a base plate and a shroud. Each of the base plate and the shroud is formed to have a reinforcement portion on its circumference. A U-shaped balance weight is attached to a flattened portion formed on the curled portion. The air cleaner of the present invention can reduce noise and vibration and improve efficiency of the fan.