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. 25, 2000
Filed:
Nov. 15, 1996
Pat Eliot Collins, Colorado Springs, CO (US);
Theodore Ernst Bruning, III, Colorado Springs, CO (US);
Grant Edward Carlson, Colorado Springs, CO (US);
Other;
Abstract
An EMI shielded enclosure has a plurality of electrically conductive walls. The conductive walls are electrically connected so electromagnetic radiation from within the enclosure cannot radiate through the walls. An EMI shield plate, that makes up at least one wall of the enclosure, is an electrically non-conductive, plastic wall with tunnel holes through the wall. The holes provide for air flow into and out of the enclosure. A conductive coating on the non conductive wall and the holes converts the non-conductive plastic wall into a conductive wall with waveguide attenuating. The waveguide attenuating holes, when so coated with the conductive layer, attenuate electromagnetic radiation passing from inside the enclosure through said holes to outside the enclosure. The waveguide attenuating holes effectively attenuate electromagnetic radiation at frequencies up to 5 gigahertz.