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:
Apr. 23, 2024
Filed:
Jun. 01, 2022
Applicant:
Toyota Motor Engineering & Manufacturing North America, Inc., Plano, TX (US);
Inventors:
Assignees:
Toyota Motor Engineering & Manufacturing North America, Inc., Plano, TX (US);
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F01N 1/02 (2006.01); G10K 11/16 (2006.01); G10K 11/172 (2006.01);
U.S. Cl.
CPC ...
F01N 1/023 (2013.01); G10K 11/161 (2013.01); G10K 11/172 (2013.01);
Abstract
A duct includes a duct body defining an inlet, an outlet, and a channel connecting the inlet and the outlet. The duct body also defines an upstream resonator. The upstream resonator includes an upstream annular cavity external to the channel and an annular perforated plate coplanar with the upstream annular cavity. The duct body further defines a downstream resonator. The downstream resonator includes a downstream annular cavity external to the channel and an annular neck coplanar with the downstream annular cavity.