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| Number | Title | Issue Date |
| 7441529 | Pitot engine crankshaft oil pump The oil pump comprises an open ended conduit extending from a connecting rod journal to below the surface of oil in a crankcase. The conduit is bent and oriented such that the open end is tangential to the radius of crankshaft rotation and faces in the direction of ... | 10/28/2008 |
| 7410398 | Engine mounted oil tank An oil system for an outboard motor is disclosed. The oil system has a pump disposed in an oil reservoir. The oil reservoir is attached to an engine of the outboard motor. The oil reservoir is preferably sized according to engine size to hold an average year's suppl... | 08/12/2008 |
| 7377251 | V-engine having at least one turbocharger The present invention relates to a V-engine (1) having at least one turbocharger (2) and at least two cylinders (4), which is constructed as a diesel engine and as an outboard motor for aquatic vehicles and wherein an exhaust gas system (6 | 05/27/2008 |
| 7357112 | Method for reorienting a horizontal shaft diesel engine to vertical operation A method for modifying a small diesel engine from a horizontal drive or crankshaft orientation into a vertical crankshaft orientation incorporates blocking of existing oil flow paths to rocker arms of the engine and replacement with pressurized low volume oil flow. ... | 04/15/2008 |
| 7350497 | Outboard motor lubrication system A lubrication system of an outboard motor delivers lubricant to an internal combustion engine. The internal combustion engine is supported by an upper end of a case. The lubrication system has an oil pan configured to hold lubricant oil. An oil conduit has a lower e... | 04/01/2008 |
| 7341027 | Portable 4-cycle engine and portable machine equipped with the 4-cycle engine A portable 4-cycle engine with a configuration which allows cooling air to flow in the direction of the crankshaft relative to a cylinder head on a cylinder, and a portable machine equipped with this engine, are provided, respectively. In such an engine, the cylinde... | 03/11/2008 |
| 7240656 | Electric oil pump An object of the invention is to provide an electric oil pump with greatly improved operation, increased endurance, and extended service life of an Oldham's coupling connecting a drive shaft that rotates a rotor in a pump housing and a motor output shaft in a motor ... | 07/10/2007 |
| 7201132 | Combustion engine of vertical shaft type To provide an internal combustion engine of a vertical shaft type, in which leakage of an oil from a crankcase and an oil pan is effectively prevented, which has high mounting rigidity relative to a working machine and, also, which is capable of being easily service... | 04/10/2007 |
| 7185615 | Variable stroke engine A variable stroke engine includes a connecting rod having one end thereof connected to a piston via a piston pin. A sub-rod is connected to a crankshaft via a crankpin and to the other end of the connecting rod. A control rod has one end thereof connected to the sub... | 03/06/2007 |
| 7182658 | Outboard motor An outboard motor engine drives an output shaft which drives a propeller shaft. The output shaft has a drive gear that engages driven gears of the propeller shaft within an oil bath for holding a lubricant for soaking the drive and driven gears. The outboard motor h... | 02/27/2007 |
| 7178500 | Marine engine with a water cooled oil gallery A lubricant supply system for a marine engine is provided with a lubricant conduit that is formed within an engine block in close proximity to a coolant conduit. The coolant conduit is extended, by a bulge, in a direction toward the lubricant conduit in order to red... | 02/20/2007 |
| 7168504 | Rotary hammer including breather port A rotary hammer and a power tool. The rotary hammer is operable in an idle mode and a hammer mode and comprises a housing and a barrel positioned in the housing and having a forward portion. A ram is positioned within the barrel and is movable relative to the barrel... | 01/30/2007 |
| 7143735 | Oil-guiding crankcase well structure for promoting bearing lubrication, and engine including same A first aspect of an oil distributing structure for an internal combustion engine includes a bearing support wall including a plurality of guide ribs which are radially mounted on a surface thereof. The guide ribs may be integrally formed, and extend around an upper... | 12/05/2006 |
| 7137590 | Lubricating installation for rocking power transmission box An installation includes at least a pressurized lubricating circuit for elements housed in the rocking crankcase, each circuit including a radial transfer bearing between two opposite cylindrical journals coaxial about the rocking axis, one fixed journal on a fixed ... | 11/21/2006 |
| 7128027 | Cooling system for an outboard motor A cooling system of an outboard motor provides back and forth flow of water from one side of an exhaust passage to the opposite side in order to avoid the creation of stagnant pools of water within which minerals and debris can collect. This result is accomplished b... | 10/31/2006 |
| 7121248 | Vertical engine Recesses are provided in portions of a head cover and a crankcase which are opposed to outer peripheries of a timing chain and a balancer-driving chain driven by a crankshaft of a vertical engine, whereby vertical walls and horizontal walls are formed to oppose to o... | 10/17/2006 |
| 7118435 | Outboard motor A system for replenishing a lubricant pan with the lubricant comprises a lubricant tank provided separately from the lubricant pan. A lubricant replenishing pump is provided in the lubricant tank for replenishing the lubricant pan with the lubricant. A lubricant lev... | 10/10/2006 |
| 7114483 | Lubrication device for four-stroke engine Disclosed is a lubrication device for a four-stroke engine, including three independent spaces which are crank room, cam room and lubricant room. A chamber is in communication with the three spaces respectively. A suction path assembly is located in the lubricant ro... | 10/03/2006 |
| 7115009 | Outboard motor An outboard motor is provided with a four-stroke-cycle engine and an oil pan disposed below the engine. In the arrangement of the oil pan, a lubricating oil reservoir is arranged on a front side of the oil pan, and an exhaust gas passage and a cooling water passage ... | 10/03/2006 |
| 7100563 | Vertical engine and outboard engine system Oil jets are mounted in upper two cylinders in a cylinder block of a 4-cylinder vertical engine to inject an oil to rear faces of pistons received in the two cylinders. Thus, although lower pistons are cooled more effectively by the oil dropped by gravitation throug... | 09/05/2006 |
| 7086915 | Lubricating structure for outboard motors There is provided a lubricating structure for an outboard motor, which can secure a sufficiently large cross-sectional area for a main oil gallery while preventing an increase in the width of an engine thereof. A water-cooled four-cycle six-cylinder V-type engine ha... | 08/08/2006 |
| 7080620 | Crankcase scavenged internal combustion engine An internal combustion engine including structure for lubricating at least one bearing disposed therein. The engine includes an engine housing including a cylinder with a reciprocating piston of the engine and a crankcase volume with a crankshaft having the at least... | 07/25/2006 |
| 7077089 | Oil drainback system for internal combustion engine An internal combustion engine having an oil drainback passage and integral check valve. The oil drainback passage allows the flow of oil from the valve box to the crankcase of the engine during normal operation and prevents the backwards flow of oil from the crankca... | 07/18/2006 |
| 7066134 | Vertical engine In a vertical engine, a bulged portion protrudes upwards, in conformity to a partially cylindrical outer wall of uppermost one of cylinders, on an upper surface of a cylinder block forming a bottom wall of a chain chamber accommodating a chain for driving a camshaft... | 06/27/2006 |
| 7055488 | Vertical engine A first chain mechanism for transmitting the rotation of a crankshaft of an vertical engine to a camshaft and a second chain mechanism for transmitting the rotation of the crankshaft to a balancer shaft are forcibly lubricated by an oil injected by first, second and... | 06/06/2006 |
| 7029346 | Vertical engine and outboard engine system A base member mounted to a side of a cylinder block is formed with an inlet-side oil supply passage for supplying an oil to an oil filter, and an outlet-side oil supply passage for discharging the oil from the oil filter. As a result, it is unnecessary to increase t... | 04/18/2006 |
| 7021268 | Crankshaft with airflow inducing surfaces A crankshaft is provided with a plurality of counterweights which are asymmetrically formed so that one surface has a shape which induces a flow of air and oil mist in a preselected and preferred direction. This shape also improves the aerodynamic characteristic of ... | 04/04/2006 |
| 7017917 | Seal structure in engine body A crankcase is coupled to a lower end face of a cylinder block of an engine and includes first and second case halves coupled to each other in a plane perpendicular to joint surfaces of the cylinder block and the crankcase. A U-shaped seal groove is defined in one o... | 03/28/2006 |
| 6945215 | Multiple-position, operator-carried, four-stroke engine A portable, operator-carried power tool having an implement supported on frame, and a lightweight, four-stroke, engine drivably connected to the implement. The engine has a crankshaft situated in a crankshaft housing and a cylinder block secured to the housing, the ... | 09/20/2005 |
| 6868819 | Lubricating system for an outboard motor A lubricating system for an outboard motor equipped with a vertical type engine. In one embodiment, the lubricating system has an oil pump positioned near the bottom of the engine, the oil pump driven by an oil pump rotor that is positioned at a connection between t... | 03/22/2005 |
| 6837207 | Inverted crankcase with attachments for an internal combustion engine A crankcase, and method of assembling a crankcase, of an internal combustion engine are disclosed. The crankcase includes a top including at least a first portion of a top surface of the crankcase, and a bottom including a bottom surface of the crankcase and a plura... | 01/04/2005 |
| 6837206 | Crankcase cover with oil passages A cover for a crankcase of an internal combustion engine is disclosed. The cover has an inside surface in which walls are formed extending from the inside surface to form channels. A plate covers the channels to form passages that allow the flow of oil from various ... | 01/04/2005 |
| 6796860 | Lubricant pump seal for outboard motor A lubricant pump seal for an outboard motor is provided. The lubricant pump seal comprises a first sealing body in an upper clearance formed between an upper through hole of a lubricant pump casing and a driveshaft extending through the upper through hole, a second ... | 09/28/2004 |
| 6772726 | Multiple-position, operator-carried, four-stroke engine An oil mist generator is connected drivably to the crankshaft for agitating liquid oil in the crankcase to establish a lubricating oil mist. The crankcase, the cam region and the valve chamber form a closed oil mist containment whereby lubricating oil mist is distri... | 08/10/2004 |
| 6755173 | Vertical engine An oil pan-coupled surface 115 formed on a lower surface of an engine block 11 having a crankshaft 15 supported to be directed vertically is extended below a cylinder head 12 beyond a line L extending downwards from a cylinder ... | 06/29/2004 |
| 6722324 | Fuel injection system for marine engine A fuel injection system for a marine engine includes an improved construction that, by the introduction of lubricant into the fuel, inhibits components of the system from rusting in the event that water, particularly salt water, is mixed with the fuel. The engine in... | 04/20/2004 |
| 6702632 | Lubrication system for outboard motor shaft coupling A lubrication system is provided that allows delivery, and preferably regulated delivery, of lubricant to a coupling between a crankshaft and the driveshaft of, for example, an outboard motor. The lubrication system includes a passageway through which lub... | 03/09/2004 |
| 6648705 | Shaft coupling for outboard motor A shaft coupling for an outboard motor includes an improved construction that can be held under a good lubricative condition. The outboard motor includes an engine. An engine body defines a first aperture through which a crankshaft extends and is journale... | 11/18/2003 |
| 6640768 | Lubrication system for direct injected engine A lubrication system for a direct injected V-type two-cycle engine is disclosed having a lubricant pump adapted to discharge lubricant into each crankcase chamber of the engine through ports positioned adjacent the downstream side of reed valves of the ai... | 11/04/2003 |
| 6612275 | Mid cam engine A drive train for an overhead valve engine, including a cam gear driven by the crankshaft, the cam gear supported for rotation in the cylinder block externally of the cylinder head and having a cam lobe mounted thereon for actuating a pair of rocker arms ... | 09/02/2003 |
