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. 12, 1988
Filed:
Mar. 10, 1986
Mitsuyoshi Nakamoto, Nara, JP;
Takao Kusuda, Ashiya, JP;
Masaaki Yonemura, Nara, JP;
Koichi Shinmura, Nerima, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An exhaust gas filter for a diesel engine made by winding a composite sheet formed of a corrugated sheet and a flat sheet, the filter being provided with many narrow openings at the entrance or at the entrance and exit of the filter, wherein the area of the upstream side face is increased to deposit carbon soot on this face and on the entrance exhaust gas channels uniformly. By providing many grooves on the cell walls at the upstream direction, more carbon soot deposits in these grooves. Accordingly, the constitution permits reliable carbon soot ignition, complete carbon soot burn out with smaller quantities of carbon deposition as a whole.