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. 07, 2025
Filed:
Oct. 22, 2021
Nissan Motor Co., Ltd., Yokohama, JP;
NISSAN MOTOR CO., LTD., Yokohama, JP;
Abstract
A composite cylinder block for an internal combustion engine includes a main block body made of a metal material and an outer member made of a synthetic resin material. The main block body has a lower deck, a base part and a cylinder wall. The outer member has an upper deck and a water jacket constituting wall surrounding the cylinder wall to define a water jacket. An outer-member-side mating surface is provided with a welding rib on a lower end of the water jacket constituting wall and is heat-welded to a top surface of the base part by heating the main block body from the lower side and pressing the outer-member-side mating surface against the main block body. The welded surfaces of the main block body and the outer member are in one plane orthogonal to a cylinder axis direction.