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. 20, 2011
Filed:
Oct. 24, 2007
Yusuke Yoshida, Kyoto, JP;
Naoki Nakada, Kyoto, JP;
Mitsunobu Nakase, Kyoto, JP;
Yasuyuki Kaji, Kyoto, JP;
Yusuke Yoshida, Kyoto, JP;
Naoki Nakada, Kyoto, JP;
Mitsunobu Nakase, Kyoto, JP;
Yasuyuki Kaji, Kyoto, JP;
Nidec Corporation, Kyoto, JP;
Abstract
A serial axial fan unit includes first and second motors with their base portions, i.e., first and second base portions axially facing each other. A motor gap is arranged axially between the first and second base portions. An axial length of the motor gap is preferably in a range from approximately 0.3 mm to approximately 2.0 mm. This configuration reduces transmissions of vibration of each of the first and second motors to the other, thereby reducing vibration interference between the first and second motors.