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:
Feb. 12, 1980
Filed:
Sep. 12, 1977
Richard A Lanpheer, Oshkosh, WI (US);
David W Kusche, Oshkosh, WI (US);
Brunswick Corporation, Skokie, IL (US);
Abstract
A two-stroke internal combustion engine having at least three cylinders includes an exhaust means with an exhaust cavity, an exhaust port at each cylinder and an exhaust port extension forming a chamber between the exhaust cavity and the exhaust port. Within the exhaust cavity exhaust pulse transmission means connect the port extension of an exhausting cylinder and the port extension of a charging cylinder with a pulse transmission path of a proper length to cause the exhaust pulse from an exhausting cylinder to arrive at the exhaust port of a charging cylinder prior to the complete closing of the exhaust port of the charging cylinder thereby forcing the air fuel mixture which escaped from the exhaust port of the charging cylinder and which is within the chamber thereof back into the charging cylinder prior to the closing of the exhaust port of the charging cylinder.