Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7367293 | Four-stroke engine A four-stroke engine includes a cylinder block, a cylinder head mounted on the cylinder block, multiple cooling fins formed on the cylinder block and the cylinder head, a combustion chamber and an intake port and exhaust port formed in the cylinder head and in commu... | 05/06/2008 |
| 7299895 | Engine crankcase An engine crankcase and transmission assembly includes a transmission housing including a forward mounting portion and a crankcase including a rear-mounting portion configured for mounting to the transmission. The rear-mounting portion of the crankcase includes an u... | 11/27/2007 |
| 7249578 | Cylinder head gasket for use in an internal combustion engine and internal combustion engine equipped therewith A combustion engine includes a cylinder head and a cylinder crankcase having a cylinder bore and a coolant duct formed therein. The coolant duct is disposed adjacent the cylinder bore and is a cooling system component. A cylinder head gasket is provided between the ... | 07/31/2007 |
| 7225767 | Conversion of an air-cooled engine to liquid cooling In some aspects of the invention the invention will relate to conversion of an existing VW air cooled engine to liquid cooling, and in still further aspects it will relate to the design of a water jacket to maximize heat rejection of a combustion chamber and piston ... | 06/05/2007 |
| 7216612 | Internal combustion engine having cylinder formed with water jacket and vehicle provided with the same An internal combustion engine includes a cylinder head, a cylinder having an opposed surface opposed to the cylinder head and including a water jacket, which is concave in an axial direction of the cylinder, and a piston provided in the cylinder. An oil ring is prov... | 05/15/2007 |
| 7080704 | Heat exchanger system The invention provides an apparatus and method for providing a heat exchanger for vehicles that have liquid cooled engines. The heat exchanger is positioned within the vehicle so as to accept airflow moving across the vehicle when the vehicle is in motion. The heat ... | 07/25/2006 |
| 7025557 | Secondary flow control system The present invention is a system (20) for controlling various fluid flows, e.g., secondary fluid flows including cavitating fluid flows, typically developed along the shroud line and usually in or around a leading edge (21) within a flow channel (2... | 04/11/2006 |
| 7021250 | Precision cooling system A precision cooling system directs the flow of coolant to optimize coolant flow around the cylinders of an internal combustion engine. This results in lower temperatures in the upper portion of the cylinders, more uniform temperatures throughout the engine, and a lo... | 04/04/2006 |
| 6918382 | Hydrogen powered scooter A scooter powered by a hydrogen powered internal combustion engine fueled by a throttled stream of air into which a controlled amount of hydrogen is injected. A hydrogen fuel control system is used to control the amount of hydrogen injected into the throttled air st... | 07/19/2005 |
| 6908283 | Vehicle fan shroud made integrally with a coolant reservoir A vehicle fan shroud made integrally with a coolant reservoir comprising a shroud unit molded from a non-transparent material with a flat flange portion and a hub portion for a radiator fan, and coolant reservoir having a shape that matches the configuration of the ... | 06/21/2005 |
| 6901748 | Heater system for diesel engines having a selective catalytic reduction system A diesel engine (10) having a selective catalytic reduction system with a urea tank (12). A heater element (26) is mounted in the urea tank and another heating element (34) is mounted in the engine (10) for cold weather starts. Bot... | 06/07/2005 |
| 6758173 | Cooling structure in engine In an engine of a cylinder-head first cooling type, cooling performance for a cylinder head and a cylinder block is enhanced. Cooling water from a water pump is supplied via a water jacket in a cylinder head to a water jacket in a cylinder block. The water jacket in... | 07/06/2004 |
| 6745728 | Coolant circuit and method for a multi-cylinder internal-combustion engine A coolant circuit and method of operating a coolant circuit is provided for a multi-cylinder internal-combustion engine. A cooling jacket which surrounds a cylinder head housing and a cylinder block and is supplied with cooling liquid by way of a pump. The cylinder ... | 06/08/2004 |
| 6725814 | Supplemental model car engine cooling system Liquid-cooling the engine cylinder head augments air-cooling of a model car engine. This provides additional heat transfer from the engine in a location on the car chassis remote from the engine. This supplemental cooling allows improved engine performance and reduc... | 04/27/2004 |
| 6688263 | System for controlling the temperature of a cylinder wall in an engine A gas jacket is provided in a lower portion of a cylinder block, so that an exhaust gas in an exhaust gas passage is supplied to the gas jacket through an exhaust gas supply passage having an exhaust gas supply valve. Fresh air in an intake passage is sup... | 02/10/2004 |
| 6684826 | Engine cooling apparatus An engine cooling apparatus includes a flow regulating valve, which adjusts a flow rate of a coolant passing through a radiator provided in a coolant circulation passage of the engine, and an electronic control unit (ECU), which controls an opening of the... | 02/03/2004 |
| 6530348 | Internal combustion engine An internal combustion engine includes a cylinder block with cooling fins cast integral therewith, and a cylinder head bolted on top of the cylinder block, first coolant passages being provided in the area of at least one cylinder contained in the cylinde... | 03/11/2003 |
| 6095099 | Engine operated working machine An engine operated working machine includes an engine and a working machine to be driven by the engine surrounded by a soundproof case. An exhaust compartment housing a muffler is formed in the soundproof case. An exhaust pipe connected with the muffler i... | 08/01/2000 |
| 5954016 | Engine cooling method and device A method and device for cooling engines and other heat sources having housings with fins protruding from a surface thereof for direct convective heat transfer with a fluid medium, particularly applicable for cooling engines constructed to be air-cooled. T... | 09/21/1999 |
| 5333575 | Internal combustion engine using lubricating oil for effective and uniform cooling An internal combustion engine which employs lubricating oil as part of the cooling system. A sleeve forms the cylinder wall and is completely surrounded by a jacket space formed by a wall exposed to the atmosphere, including air circulated by the engine's... | 08/02/1994 |
| 5261357 | Lightweight engine block cooling system A lightweight engine block fabricated from a unitary, thermally conductive casting having at least one cylinder formed with a cylindrical wall in the casting with an upper cylinder section having an outer housing wall displaced from the cylinder wall arou... | 11/16/1993 |
| 5152256 | Air-liquid cooled engine Several embodiments of air-liquid cooled internal combustion engines for powering vehicles such as motor scooters. In each embodiment, the engine is provided with a finned cylinder for air cooling and a cylinder head having a liquid cooling jacket for wat... | 10/06/1992 |
| 5067574 | Mounting for a cooler A mounting for a cooler of a motor vehicle which has two journals arrangd at a distance from one another on each of its opposite narrow sides and adapted to be held in corresponding bearing bores of supporting brackets fixed to the vehicle. Each bearing b... | 11/26/1991 |
| 5031580 | Oil lubricating and cooling system for engines An engine unit is equipped with a cylinder head and a crank case in which an oil feed pump and a scavenge pump are disposed. A lubricating and cooling system for the engine unit comprises an oil tank constituted by a hollow main tube, a hollow down tube, ... | 07/16/1991 |
| 4998510 | Cooling system for air cooled internal combustion engines A cooling system is provided for an air-cooled internal combustion engine, and includes at least a first fan for causing air to flow along a path directly surrounding individual air-cooled cylinders of the engine and a radiator disposed in the air-flow pa... | 03/12/1991 |
| 4964378 | Engine cooling system A cooling device is provided for an engine having a cylinder head, a crankcase and a crankcase cover. The device includes a jacket formed in the crankcase for retaining therein a liquid cooling medium, and a plurality of fins is provided on the crankcase.... | 10/23/1990 |
| 4940100 | Motor vehicle A motor vehicle comprising an engine arranged in the rear part of an engine housing and a radiator arranged in a front part of the engine housing, in which the engine housing is closed at the front side thereof and an air inlet is provided at a rear part ... | 07/10/1990 |
| 4928651 | Integral engine block air cooled engine oil cooler An oil cooler for small internal combustion engines is provided. The oil cooler comprises a heat exchanger mounted on the external surface of the engine crankcase, directly below the flywheel. The heat exchanger has an inner serpentine passageway in flow ... | 05/29/1990 |
| 4917201 | Motor vehicle A motor vehicle having an air exhaust duct interposed between a radiator and an engine, the air exhaust duct being operative to guide cooling air that has cooled the radiator and became warm to flow in a direction in which the cooling air flows away from ... | 04/17/1990 |
| 4903485 | Muffler cooling device for V-type engine A muffler cooling device for a V-type engine which includes an engine cooling fan disposed at an end of a crankshaft. An air guide plate is provided at a part of a duct through which air sucked by the cooling fan flows, and the duct has at least one openi... | 02/27/1990 |
| 4873944 | Partially liquid-cooled type forced air-cooling system for internal combustion engine In a partially liquid-cooled type forced air-cooling system for an internal combustion engine which includes an air-cooled cylinder and a liquid-cooled cylinder head, a centrifugal cooling fan is provided in front of a crankcase so as to rotate about the ... | 10/17/1989 |
| 4834030 | Diesel internal combustion engine An diesel internal combustion engine with a liquid-cooled cylinder crank casing (1) includes a cylinder head gasket (300) which can be used with either a liquid-cooled cylinder head (200) or an air-cooled cylinder head (100).... | 05/30/1989 |
| 4825816 | Engine with forced air-cooling In a forced air-cooled engine, a local high temperature portion is adapted to be cooled effectively so that thermal distortion and thermal breakage of a cylinder and/or a cylinder head caused by such a local high temperature can be avoided. To prevent the... | 05/02/1989 |
| 4794884 | Internal combustion engine with fluid-cooled cylinder liner An internal combustion engine with a block cylinder head 7 and a fluid-cooled cylinder liner 1 has a cooling chamber between the cylinder liner 1 and the crankcase 2. The cooling chamber includes at least two partial cooling chambers 9a, 9b which are conn... | 01/03/1989 |
| 4685530 | Side cover structure for motorcycles A side cover structure used in a motorcycle having a motorcycle frame, a fuel tank supported on the motorcycle frame, a driver's seat disposed on the motorcycle frame, and an engine supported on the motorcycle frame below the fuel tank and the driver's se... | 08/11/1987 |
| 4621680 | Cooling system for motorcycle engine In a motorcycle engine having front and rear engine blocks arranged along the longitudinal line of a vehicle body, the front engine block is equipped with cooling fins for air-cooling and the rear engine block is provided with a water jacket for water-coo... | 11/11/1986 |
| 4604974 | Air guide arrangement in engine room An air flow shutting member is removably disposed between the radiator and the engine so as to block the air flow which has passed through the radiator from contacting the engine. An air discharging structure is associated with the shutting member for smo... | 08/12/1986 |
| 4589379 | Cooling apparatus for water-cooled engines This disclosure relates to cooling apparatus for a water-cooled internal combustion engine. The apparatus comprises a centrifugal fan driven by the engine when running, said fan having an intake air port and a discharge air opening. A rotary screen is als... | 05/20/1986 |
| 4523555 | Reciprocating internal combustion engine with a wet cylinder sleeve inserted into a cylinder crank housing A reciprocating internal combustion engine includes at least one wet cylinder sleeve which is inserted into a cylinder crank housing. The upper portin of the sleeve is clamped between a cylinder head and a cylindrical receptacle disposed inside the cylind... | 06/18/1985 |
| 4516630 | Motorcycle radiator A heat exchange device for mounting between the front fork and the engine of a motorcycle comprises two vertical coolant outflow tanks on either side of a core area, and a coolant inflow tank located midway between the outflow tanks and connected to the l... | 05/14/1985 |
