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. 28, 1987
Filed:
Dec. 21, 1984
Applicant:
Inventor:
Otto H Scharpf, Brookfield, WI (US);
Assignee:
Outboard Marine Corporation, Waukegan, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B / ;
U.S. Cl.
CPC ...
60313 ;
Abstract
An engine apparatus comprising an internal combustion engine having a cylinder with an exhaust port, an exhaust gas passageway system communicating with the exhaust port for providing a first compressive wave arriving at the exhaust port prior to closure thereof, and an exhaust gas side branch for providing a second compressive wave arriving at the exhaust port after the first compressive wave and prior to closure of the exhaust port.