Class 440/88HE - Heat exchanger

Subclass of Class 440 - Marine propulsion
No. of patents: 36
Last issue date: 07/19/2011

Number	Title	Issue Date
7980906	Personal watercraft A personal watercraft comprises an engine which is mounted in a body of the watercraft and is equipped with an open-loop water cooling system; a coolant passage in which water for cooling the engine flows; a water flow generator configured to operate in association ...	07/19/2011
7806740	Marine propulsion device with an oil temperature moderating system An oil temperature moderating system of an outboard motor causes cooling water to be warmed to a predefined magnitude of temperature and then conducted through a temperature responsive valve to a coolant conduit, or coolant jacket, in thermal communication with oil ...	10/05/2010
7597599	System for sealing a keel cooler to a vessel hull An improved system for sealing a keel cooler to a hull of a vessel, of the type including a plurality of flow channels for exchanging heat between vessel water flowing in the channels and surrounding sea water; nozzles extending from ends of the keel cooler, for all...	10/06/2009
7585196	Marine propulsion system with an open cooling system that automatically drains when the marine vessel is taken out of the water A cooling system for a marine propulsion device provides a transom opening that is sufficiently low with respect to other components of the marine propulsion device to allow automatic draining of all cooling water from the system when the marine vessel is removed fr...	09/08/2009
7476135	Cooling system for a marine propulsion device A cooling system for a marine vessel is configured to allow all cooling water to flow out of the cooling circuit naturally and under the influence of gravity when the marine vessel is removed from the body of water. All conduits of the cooling circuit are sloped dow...	01/13/2009
7367856	Personal watercraft A personal watercraft with a supercharging device and an intercooler is disclosed. The personal watercraft may include an engine, a water jet pump, a propeller shaft to transmit an output power of the engine to the water jet pump, and a bearing case configured to su...	05/06/2008
7329162	Cooling system for a marine propulsion device A cooling system for a marine vessel is configured to allow all cooling water to flow out of the cooling circuit naturally and under the influence of gravity when the marine vessel is removed from the body of water. All conduits of the cooling circuit are sloped dow...	02/12/2008
7264520	Cooling system for an outboard motor having both open and closed loop portions A cooling system for an outboard motor pumps water from a body of water through certain selected portions of the outboard motor and through a heat exchanger which, in turn, comprises a coolant conduit that is directed to conduct the coolant in thermal communication ...	09/04/2007
7220154	Outboard jet drive marine propulsion system An outboard jet drive marine system for a boat includes a housing, the housing has front and rear sides, and a top and bottom. The housing is adapted to be affixed behind a hull of a boat. An engine is disposed within the housing. A jet drive unit is releasably moun...	05/22/2007
7201213	Keel cooler with fluid flow diverter A keel cooler having a standard header with an internal beveled bottom wall, with orifices on the inner wall of the exterior tubes extending into the header, the orifices being in the natural flow path of the coolant flow. The orifices are sufficiently large so as n...	04/10/2007
7121906	Method and apparatus for decreasing marine vessel power plant exhaust temperature According to the present invention, a method and apparatus for generating power aboard a marine vessel is provided. The method comprises the steps of: (a) providing a Rankine Cycle device that includes at least one of each of an evaporator, a turbo-generator that in...	10/17/2006
7094118	Heat exchanger for a marine propulsion system The heat exchanger for a marine propulsion system is located within available space in front of the transom of a marine vessel and attached to the transom. The housing of the heat exchanger can be attached to a drive unit support structure and spaced apart from an e...	08/22/2006
7055576	Method and apparatus for enhancing the heat transfer efficiency of a keel cooler The invention relates to a method and apparatus for enhancing the heat transfer efficiency of a keel cooler by increasing the flow rate of coolant through the side tubes. Because the side tubes are exposed to a greater amount of fresh unhindered seawater, increasing...	06/06/2006
7056173	Heater and a method for delivering heat energy from a water cooled two cycle marine engine A heater and method for delivering heat energy from a water cooled two cycle marine engine is described and which includes an exhaust expansion chamber operably coupled with a two cycle marine engine, and wherein the two cycle marine engine produces a source of heat...	06/06/2006
7044194	Heat exchanger with beveled header A header for a heat exchanger, the header having a beveled closed end portion. ...	05/16/2006
7029341	Water jet propulsion boat having improved ride plate A water jet propulsion boat includes a pump chamber provided at a rear portion of a boat body of the boat. Further, a water jet pump is disposed in the pump chamber and a ride plate closes a bottom of the pump chamber. The ride plate includes a base fixable to the b...	04/18/2006
6988919	Oil cooler and small watercraft An oil cooler of an engine for small watercraft. The oil cooler typically includes a mounting portion configured to mount the oil cooler on an outer wall face of an engine of the small watercraft, an oil passage configured to allow oil to flow therethrough and lead ...	01/24/2006
6896037	Keel cooler with fluid flow diverter A keel cooler having a standard header with an internal beveled bottom wall, with orifices on the inner wall of the exterior tubes extending into the header, the orifices being in the natural flow path of the coolant flow. The orifices are sufficiently large so as n...	05/24/2005
6869324	Small watercraft Disclosed is a small watercraft having an engine cooling system which can lessen variation in temperature and temperature distribution of the engine between the time when the engine is starting and when the watercraft is continuously driving with a throttle in a ful...	03/22/2005
6808430	Amphibious vehicle An amphibious vehicle which on land looks remarkably like a conventional automobile. The wheels may be raised when the vehicle is in the water. The engine is placed in the stern, directly over the jet and transaxle, which provides room for four passengers. The vehic...	10/26/2004
6094758	Waterbed mattress system for boats A waterbed mattress system for boats and, in particular, to a waterbed system for a boat having a cabin at least partially below a deck which includes a waterbed mattress which can be filled from a body of water surrounding the boat through the hull of th...	08/01/2000
6029463	Method and apparatus for cooling or condensing mediums A method and an apparatus for providing a cooling or a condensing of a hot fluid received from a heat generating apparatus using a cooling apparatus or a condenser. The apparatus includes a hollow cooling or condensing pot (6) having an inner cavity (10) ...	02/29/2000
6015320	Oil cooler for watercraft A lubrication cooling system for an internal combustion engine positioned within an engine compartment of a personal watercraft for powering a water propulsion unit thereof, is disclosed. The lubrication cooling system lowers the temperature of the lubric...	01/18/2000
5931217	Marine heat exchanger A marine heat exchanger has a low profile header and cooling tube configuration to minimize drag and maximize heat transfer during use. The cooling tubes extend from at least an underside of the header so that the header vertically disposed cross sectiona...	08/03/1999
5868093	Amphibious vehicle An improved amphibious vehicle comprising a confined housing of a vehicle is provided. The confined housing is provided with a central connecting chamber under a cabinet adjacent to the central portion. An engine room and a floating cell are respectively ...	02/09/1999
5746270	Heat exchanger for marine engine cooling system A heat exchanger assembly is provided for a marine propulsion system having a closed loop cooling system. The heat exchanger body encloses a series of tubes carrying sea water which removes heat from the engine coolant. The heat exchanger includes an inte...	05/05/1998
5732665	Heat exchanger and marine engine cooling apparatus Novel apparatus and methods for cooling a watercraft internal combustion engine which supplies rotational force to a drive unit attached to the watercraft are described. The apparatus comprises a heat exchanger connected to or integral with the drive unit...	03/31/1998
5690046	Amphibious vehicles An amphibious vehicle has a heat engine with an ambient air cooling system primarily employed for cooling the engine during travel on land, and an external water cooling system primarily for cooling the engine during travel on water. The engine is mounted...	11/25/1997
5507673	Jet propelled watercraft A jet propelled watercraft propelled using an internal combustion engine. The water providing the jet is drawn past a cooling device to cool the engine cooling liquid....	04/16/1996
5004042	Closed loop cooling for a marine engine A marine power system having closed loop cooling includes a marine engine having a cooling fluid passage defined therethrough through which a cooling fluid stream may pass. A shell and tube heat exchanger has a tube side flow path and a shell side flow pa...	04/02/1991
4755155	Marine propulsion device oil cooling kingpin arrangement A marine propulsion device comprising a power head having an engine, a lower unit which carries the engine, the lower unit including a rotatably mounted propeller and a drive shaft housed within the lower unit and operatively coupled to the engine and to ...	07/05/1988
4735590	Lubrication system for marine propulsion device Disclosed herein is a marine propulsion device comprising a propulsion unit including an internal combustion engine, a pump driven by the engine, a transom bracket for mounting the propulsion unit to the transom of a boat, a fluid reservoir carried by the...	04/05/1988
4730664	Cooling system for cooling a liquid coolant in an immersible motor vehicle In a cooling system for floatable and/or submersible motor vehicles having a liquid-cooled engine the radiator (1) is accommodated in a chamber (2), which during land travel is flown through by air supplied by a fan (V) and which admits water when the veh...	03/15/1988
4616588	Water craft and method for removing weeds and pollutants from navigable waters A navigable water craft having a first tool mounted on the bow area for removing pollutants. The tool may be a basket or scoop which is mounted to be raised and lowered such as through hydraulic rams. Additionally, the basket may be mounted to be rotated ...	10/14/1986
4557319	Marine keel cooler Fore and aft headers are parallely spaced apart and connected by a plurality of tubes or pipes extending normal thereto and forming therewith a grid type heat exchanger. The headers are streamlined and fixed to the bottom of a marine vessel with the tubes...	12/10/1985
4040476	Keel cooler with spiral fluted tubes A keel cooler type heat exchanger is disclosed which is mounted on the exterior of the hull of a vessel or the like. The hull is curved in the direction of the length of the heat exchanger. The heat exchanger includes a pair of spaced headers secured to t...	08/09/1977

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Class 440/88HE - Heat exchanger