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:
Jul. 11, 2006
Filed:
Jun. 02, 2005
Kenneth R. Seymour, Ii, Sheboygan, WI (US);
Anthony M. Straub, Fond du Lac, WI (US);
Kenneth R. Seymour, II, Sheboygan, WI (US);
Anthony M. Straub, Fond du Lac, WI (US);
Brunswick Corporation, Lake Forest, IL (US);
Abstract
An exhaust system for a marine engine provides a flow directing component that reacts to changes in engine speed to select an appropriate and advantageous direction of fluid flow through the flow directing component. At speeds below a first threshold speed magnitude, such as an idle speed, exhaust gases pass from a first exhaust passage, through the flow directing component, and out of the marine propulsion device through an above-water exhaust conduit. When the engine is operating at speeds above a second threshold speed magnitude, the flow directing component operates according to Venturi principles to lower the pressure at its first end and draw ambient air through the second exhaust passage into the first exhaust passage.