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:
Jan. 08, 2002
Filed:
Apr. 19, 2000
Takao Tarutani, Kakogawa, JP;
Toshihiro Suto, Kasai, JP;
Masaki Sasao, Kobe, JP;
Toshio Otani, Kasai, JP;
Yoshihisa Ueno, Kasai, JP;
Noriaki Kimura, Himeji, JP;
Makoto Iwatake, Kasai, JP;
Koichi Nakai, Himeji, JP;
Toshinari Kobayashi, Ono, JP;
Sadaki Kodera, Kasai, JP;
Toshiyuki Fujiyoshi, Kasai, JP;
Yoshihiro Mori, Kasai, JP;
Takahiro Nishiyama, Kasai, JP;
Sanyo Electric Co., Ltd., , JP;
Abstract
In an electric blower, exhaust air discharged radially from a centrifugal fan is redirected to a motor drive section by a diffuser and a fan cover. The air passes from a ventilation opening on a motor frame and through a bracket to cool the motor drive section. A portion of the air from the centrifugal fan is bled off through exhaust openings without passing over the motor, whereby this portion remains cooler and cleaner than the air that passes over the motor. Air flows up a wand and then passes over the motor to cool the motor. This air passes through filters before being discharged. The portion of air that is bled off passes along a parallel path in the wand to agitate dirt, and to maintain the wand relatively cool. In one embodiment, some of the bled-off portion is discharged directly without passing along the wand.