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. 25, 2020
Filed:
May. 16, 2018
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Michael A. Karram, Flint, MI (US);
Xin Ouang, Oakland, MI (US);
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 13/18 (2010.01);
U.S. Cl.
CPC ...
F01N 13/1805 (2013.01);
Abstract
An exhaust manifold for an internal combustion engine includes a first exhaust port, a second exhaust port, and a septum that separates the first exhaust port and the second exhaust port. The septum has a surface with a J-groove to relieve stresses by looping a tip of a crack initiated by the J-groove back into a stress field of the J-groove.