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:
Sep. 03, 1996
Filed:
Jun. 20, 1995
Kenji Kamada, Kadoma, JP;
Marsushita Electric Works, Ltd., Osaka, JP;
Abstract
An axial-flow fan includes a cylindrical casing having an inlet port at one axial end and an outlet port at the other axial end, and in which a motor for driving vanes is mounted. The casing is further provided at the inlet port with an inside wall member defining an annular flow path between opposing peripheries of the casing and the inside wall member. The path has its own inlet and outlet, the outlet disposed in a plane oriented perpendicular to the longitudinal axis of the casing. The annular flow path provides a peripheral air flow along the inner periphery of the casing towards the outer peripheral edges of the vanes to oppose the creation of a leakage swirl around the outer edges of the vanes.