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:
Oct. 15, 2019
Filed:
Sep. 07, 2018
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Jumpei Shioda, Nagakute, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A catalyst device includes a catalyst support, a tubular portion, which accommodates the catalyst support, a holding mat, which holds the catalyst support, an insulator provided over the outer circumferential surface of the tubular portion, and a heat insulating member arranged between the insulator and the tubular portion. The region of the outer circumferential surface of the tubular portion between the upstream end and the downstream end in the exhaust gas flowing direction is divided into two subregions arranged in a direction of the axis of the tubular portion. Of the two subregions, the subregion on the upstream side is defined as an upstream subregion, and the subregion on the downstream side is defined as a downstream subregion. The area that is covered with the heat insulating member in the downstream subregion is smaller than the area that is covered with the heat insulating member in the upstream subregion.