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.

Date of Patent:
Oct. 12, 2004

Filed:

Jun. 06, 2003
Applicant:
Inventors:

Takashi Mikami, Tokyo, JP;

Hiroyuki Kawada, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 1/700 ;
U.S. Cl.
CPC ...
F04B 1/700 ;
Abstract

A ring-like rib is erected on an inner circumferential edge of an insertion hole , which is opened in the scroll casing so that the fan f is inserted therethrough, while a side wall facing the ring-like rib is provided in the bracket blocking the insertion hole . A helical groove portion and a protruding portion are formed in one of an outer surface of the side wall and an inner surface of the ring-like rib and in the other thereof, respectively. The bracket is caught in the scroll casing by turning the bracket in a direction opposite to a direction of rotation of said fan f. Further, during the engagement therebetween, a cooling duct is formed.


Find Patent Forward Citations

Loading…