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:
Apr. 30, 2002
Filed:
Jun. 23, 2000
Bryan E. Blackwell, Franklin, IN (US);
Albert C. McDonald, Jr., Greenwood, IN (US);
Thomas M. Yonushonis, Columbus, IN (US);
Cummins Inc., Columbus, IN (US);
Abstract
A microwave regenerable filter element including a filter media for filtering particulates from an exhaust gas, and a plurality of discrete heat generators disposed in the filter media, each of the plurality of discrete heat generators being adapted to absorb microwave energy and convert the microwave energy into heat. In one embodiment, the plurality of discrete heat generators may have a length dimension of substantially ½ of a microwave wavelength and a width dimension of substantially ⅛ of a microwave wavelength. In another embodiment, the plurality of discrete heat generators may be disposed in a spatial array in a manner that density of the plurality of discrete heat generators varies radially away from a central axis of the filter element. In yet another embodiment, the density of the plurality of discrete heat generators in the spatial array may also vary axially along the central axis of the filter element.