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. 08, 2015
Filed:
Nov. 01, 2012
Applicant:
Yamabiko Corporation, Ohme-shi, Tokyo, JP;
Inventors:
Yusuke Kinoshita, Akishima, JP;
Yoshihiro Yamauchi, Yokosuka, JP;
Assignee:
Yamabiko Corporation, Ohme-shi, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E01H 1/08 (2006.01); A01G 1/12 (2006.01); F04B 39/00 (2006.01);
U.S. Cl.
CPC ...
E01H 1/0809 (2013.01); A01G 1/125 (2013.01);
Abstract
The air-blow working machine comprises a fan provided in a fan casing and a drive unit to drive the fan, and discharges an airflow generated by the rotating fan. The fan casing has an inner wall disposed between the fan and the drive unit. A smooth surface is formed on the face of the inner wall on the side of the fan. A first concavo-convex portion is formed on the face of the inner wall on the side of the drive unit. Thereby, a noise is reduced without an influence upon performance for blowing air.