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:
Aug. 20, 1985
Filed:
Jun. 13, 1984
Nippon Soken, Inc., Nishio, JP;
Abstract
An exhaust gas cleaning device provided with a filter member for collecting particulates in the exhaust gases, and an electric heater for burning and eliminating the particulates collected by the filter member, is disclosed. The filter member is formed of electrically insulating ceramic and is installed in the exhaust gas passage. The heater is formed of ceramic provided with a large number of open passages and having electric conductivity or electrically insulating property. The heater is closely adhered to the exhaust gas inlet end surface of the filter member. In the case that the electrically conductive ceramic is used, the ceramic itself acts as a heating element which heats and ignites the collected particulates. In the case that the electrically insulating ceramic is used, a metallic film acting as a heating element is formed on the walls of the ceramic defining the open passages by printing, vacuum evaporating or other method.