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:
Nov. 30, 1999
Filed:
Oct. 20, 1998
Chi Keung Lee, Gloucester, CA;
William David Jeakins, Kanata, CA;
Nortel Networks Corporation, Montreal, CA;
Abstract
A device for improving air flow around shelf-based circuit cards housed within a card cage is disclosed where at least one fan is located above a rear portion of the card cage to draw air from beneath a forward portion of the card cage. The device is generally rectangular, having a forward portion, a rear portion and two side portions. A plurality of spaced parallel flanges extend from one side portion to the other side portion. Each flange, in cross-section, has an inverted L-shape, with a vertical section and a horizontal section, the horizontal section extending from the vertical section towards the forward portion of the device. Preferably, the height of the vertical section is a least 1.2 times the width of the horizontal section and the distance between adjacent flanges is at least the height of the vertical section. Also, preferably, the device is shaped from a single piece of sheet metal. The device is connected beneath the card cage with the forward portion of the device connected to the front cross member of the card cage and the rear portion connected to the rear cross member of the card cage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile