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. 29, 2002
Filed:
May. 19, 2000
Applicant:
Inventors:
Assignee:
Mitsuba Corporation, Kiryu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 9/00 ;
U.S. Cl.
CPC ...
H02K 9/00 ;
Abstract
A fan motor has an end case having an annular recess. An air passage hole is formed in the annular recess defined by axially outer and inner tubular guide walls formed on the end case. A cover member covering the air passage hole is provided on a fan shroud. First and second ring-shaped ribs are integrally formed on the side of the cover member facing the end case, so as to form a labyrinth structure in cooperation with an open end of a motor yoke and with the radially outer peripheral surface of the annular recess.