Patent ID: 6224440
Filing Date: 2001-05-01
Classification: B63B,B63H,F01N,F02B

Abstract:
A personal watercraft having a hull that defining a rider's area for accommodating a rider operator and not more than three additional passengers, an engine compartment provided within said hull and containing a powering internal combustion engine, a propulsion device driven by said engine for propelling said watercraft through the body of water in which it is operating, said engine being provided with an exhaust system through which exhaust gases are discharged to the atmosphere, said exhaust system including at least one water trap and expansion chamber device that receives the exhaust gases from said engine, a conduit extending from said water trap device to an atmospheric discharge, and a high frequency exhaust silencer disposed in said conduit for silencing high frequency sounds in the exhaust, said high frequency exhaust silencer comprising a perforated tube surrounded by a closed chamber disposed in an inclined orientation with an inlet end disposed above an outlet end and a drain tube extending from said closed chamber downwardly to an outlet to the rear of said closed chamber.