Class 440/89F - Watertrap

Subclass of Class 440 - Marine propulsion
No. of patents: 20
Last issue date: 06/24/2008

Number	Title	Issue Date
7390232	Exhaust system for a marine engine An exhaust system for a marine propulsion system includes first through fifth exhaust conduit members, including a pair of serially connected marine exhaust elbows laterally spanning the engine. ...	06/24/2008
7361282	Separator of floating components A buoyant component separator is disclosed for removing at least some floating contaminants from fluids. The component separator may be used with a marine engine exhaust system to reduce particulate matter and unburned fuel contained in liquid coolant before it is j...	04/22/2008
7288010	Personal watercraft A personal watercraft including a body including a hull and a deck covering the hull from above, an engine accommodated in an interior of the body, and an exhaust system that is accommodated in the interior of the body. The exhaust system includes an upstream muffle...	10/30/2007
7182659	Exhaust device of boat An open/close valve can decrease the exhaust resistance as much as possible in a usual operation. An open/close valve includes a valve casing and a valve element that is housed in the valve casing in a vertically movable manner. The valve casing includes a cylindric...	02/27/2007
7140935	Small jet propulsion watercraft A small jet propulsion watercraft 10 is provided with side wall portions 14a and 14b formed on both the left and right sides of a stepping platform 13, within which water lock devices 36 and 37 are disposed, re...	11/28/2006
7065961	Exhaust system with an integral moisture trap A moisture trap is formed as an integral part of the wall of an exhaust conduit. Tapered surfaces can be provided to direct condensate downwardly and into a reservoir of the moisture trap where the moisture is retained until the temperature of the exhaust system rea...	06/27/2006
6921308	Engine and personal watercraft A personal watercraft and engine therefor are provided. The engine typically is mounted in a personal watercraft and configured to discharge an exhaust gas through a water muffler. The engine typically includes a cylinder head forming a combustion chamber, wherein t...	07/26/2005
6913499	Exhaust passage of small watercraft, method of connecting exhaust pipe, and water muffler An exhaust passage configured to discharge an exhaust gas from an engine of a small watercraft, comprises at least a first exhaust pipe, a second exhaust pipe connected to the first exhaust pipe, and a connecting structure configured to connect the first exhaust pip...	07/05/2005
6855022	Personal watercraft A first exhaust chamber and a second exhaust chamber are disposed within a body of a watercraft. The first exhaust chamber communicates with an exhaust port of an engine through a first exhaust pipe. A first space of the first exhaust chamber communicates with the s...	02/15/2005
6820419	Marine wet exhaust system A marine wet exhaust system (10) which injects water into the exhaust flow for cooling and attenuating noise includes a particulate capture and containment system (14) for removing particulates and fluid contaminants from the exhaust gas and the waste ...	11/23/2004
6769944	Exhaust and drain structure for vessels To effectively cool a water muffler. Exhaust gas from an engine is discharged through an exhaust pipe having a water jacket into a water muffler together with water passed through the water jacket. A water outlet port of the exhaust pipe is directed toward an upper ...	08/03/2004
6739921	Exhaust structure of exhaust system for a boat An exhaust system for a small boat is constructed in such a manner that an exhaust pipe extends rearwardly from an engine provided in a hull of the boat. A water muffler is provided in the exhaust pipe, and exhaust gas is discharged through a water lock pipe extendi...	05/25/2004
6616492	Exhaust structure of personal watercraft Disclosed is an exhaust structure of a silent jet-propulsion personal watercraft capable of preventing water ingress into an exhaust system even when the watercraft is inverted. An exhaust structure of the watercraft is configured to cause an exhaust gas ...	09/09/2003
5743206	Hull for small watercraft An improved hull for watercraft provides a secondary access port to an engine compartment. The secondary access port facilitates service or maintenance of certain engine components (e.g., spark plugs) which are hard to reach from the main access port, whe...	04/28/1998
5647779	Manifold and water trap system for marine engine A personal watercraft having a compact engine arrangement for driving a propulsion device such as a jet pump positioned to the rear of and on the underside of the watercraft. The engine is disposed so that its cylinder block is at an angle to a vertical p...	07/15/1997
5619950	Watercraft A small personal watercraft having a number of features, such as a pair of rear-view mirrors which form a ventilating function for ventilating the engine compartment. The watercraft has a straddle-type motorcycle-like seat on which passengers may sit in s...	04/15/1997
5572943	Personal watercraft with v-type engine A number of embodiments of small personal watercraft each embodying a V-type engine. Arrangements are shown wherein the engine is mounted either with its output shaft extending in a longitudinal direction or in a vertical direction. Various placements for...	11/12/1996
5490474	Watercraft A small personal watercraft having a number of features, such as a pair of rear-view mirrors which form a ventilating function for ventilating the engine compartment. The watercraft has a straddle-type motorcycle-like seat on which passengers may sit in s...	02/13/1996
4997399	Exhaust system for small vessel A small watercraft having a number of embodiments of exhaust systems into which coolant from the engine are discharged and which insure that water cannot enter the exhaust ports in the event the watercraft becomes displaced. In all embodiments, a water ac...	03/05/1991
4811560	Exhaust system for marine propulsion Several embodiment of small boats having improved exhaust systems for precluding the entry of water into the engine combustion chambers from the body of water in which the watercraft is operating. In each embodiment, the exhaust system includes a horizont...	03/14/1989

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Class 440/89F - Watertrap