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:
Jun. 03, 2003
Filed:
Jun. 26, 2001
Klaus J. Peter, Natick, MA (US);
Osama M. Ibrahim, Kingston, RI (US);
Rypos, Inc., Medway, MA (US);
Abstract
A Diesel particulate filter cartridge system for filtering particulate matter and nitrogen oxide from a flow of air containing particular matter includes a filter support plate with a plurality of cylindrical electrically regenerable filter media members connected thereto. A NOx trap is also provided that is either incorporated directly into the filter media members or provided as a separate structure in close proximity to the filter media members. A valve assembly includes a number of independently actuatable damper valves that correspond to a number of through holes in the filter support plate. When actuated, the damper valves limiting flow of air through a corresponding through hole and filter media member connected thereto. An outer housing is disposed about the valve assembly and filter media members to contain them in a compact package. A programmable computer control module shuts off the flow of air through a filter media member and selectively electrically regenerates it. Such electrical regeneration is accomplished through heat which also, either directly or indirectly, regenerates the NOx trap.