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:
May. 30, 1989
Filed:
Sep. 22, 1987
Asahi Glass Company Ltd., Tokyo, JP;
Abstract
A filter unit comprises a plurality of plates made of an air-permeable, porous material which define particulate-containing gas passages and clean gas passages. The clean gas passages are formed at one side of each of the air-permeable, porous plates and the particulate-containing gas passages are at the other side in the direction intersecting each other. Particulates in an exhaust gas from a diesel engine deposit and accumulate on the air-permeable, porous plate while the exhaust gas is passed from the particulate-containing gas passages through the air-permeable, porous plates to the clean gas passages. A nozzle is placed in an outlet conduit, which is connected to the discharging side of the clean gas passages, to eject gas for back washing to thereby peel off and drop the particulates on the air-permeable, porous plates. A particulate receiving plate is provided to collect the particulates, which are burnt by a heater provided in the particulate receiving plate.