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:
Oct. 31, 2017
Filed:
Aug. 03, 2011
Hidetake Ota, Kiryu, JP;
Hiroshi Yokoyama, Kiryu, JP;
Yukio Osawa, Kiryu, JP;
MITSUBA CORPORATION, Gunma, JP;
Abstract
A cooling fan includes a boss section () connected to a rotary drive source, a plurality of blades () protruding outward from the boss section in a radial direction, and a cylindrical ring member () configured to annularly connect the vicinities of end sections outside in the radial direction of the plurality of blades. The plurality of blades () protruding outward from the boss section () in the radial direction are connected by the cylindrical ring member () in the vicinity of the end section outside in the radial direction. An air inlet groove () is formed at an end section in an axial direction of an air suction side of the ring member (). The air inlet groove () is disposed between front regions in the rotation direction of all of the blades () on the ring member () and front regions in the rotation direction of the blades () adjacent thereto. The air flowing from the outer circumferential side passes through the air inlet groove () of the ring member () and gradually changes a direction to be suctioned between the blades ().