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 |
| 8186327 | Oil supply system for internal combustion engine with dual mode pressure limiting valve A lubricating oil supply system for internal combustion engine includes an oil reservoir and oil pump connected with a lubrication distribution network including a piloted pressure relief valve which selectively controls the pressure within the distribution network ... | 05/29/2012 |
| 7438031 | Layout structure of hydraulic control valve for valve train in internal combustion engine To provide a layout structure of a hydraulic control valve for a valve train in an internal combustion engine which can reduce the influence of heat from the cylinders and can avoid the impairment of the external appearance of the internal combustion engine. An inte... | 10/21/2008 |
| 7438064 | Mixture-lubricated internal combustion engine A mixture-lubricated internal combustion engine has a cylinder (2) in which a combustion chamber (3) is formed. The combustion chamber (3) is delimited by a piston (5) mounted to move back and forth. The piston (5) drives a cranksh... | 10/21/2008 |
| 7392780 | Machine provided with pulsating oil pressure reducing device A pulsating oil pressure reducing device 40 for an internal combustion engine has an oil chamber 41 for reducing pulsating oil pressure in a discharge passage 30 for carrying oil discharged from an oil pump 20. The oil chamber 41 c... | 07/01/2008 |
| 7367328 | Four-cycle engine and motorcycle comprising four-cycle engine A four-cycle engine including an engine case configured to accommodate a crankshaft; a pump configured to suction air from an inner space of the engine case; and an air suction passage through which the inner space inner space of the engine case and the pump communi... | 05/06/2008 |
| 7363904 | Lubrication device of engine An engine lubrication system in which a transmission 13 having a main shaft 14 and a drive shaft 15 each having a plurality of change-speed gears mounted thereon is arranged within a separate-type crankcase which is separated into left and right... | 04/29/2008 |
| 7308882 | Oil feeding system of engine An oil feeding system of an engine equipped with a transmission configured to change a rotational speed of rotation of a crankshaft and to output the rotation, including an oil pump configured to be driven in cooperation with the rotation of the crankshaft, an oil p... | 12/18/2007 |
| 7267094 | Lubrication system of small vehicle engine A lubrication system of a vehicle engine wherein a cylinder head has a head side oil passage disposed at one end thereof along the axis of a crankshaft. A lower case of a crankcase is provided with a supply source side oil passage communicating with an oil supply so... | 09/11/2007 |
| 7261081 | Engine and transmission case assembly The present invention provides a motorcycle including a front wheel, a rear wheel, a frame supported by the front and rear wheels, a crankcase including a first interface portion and a first passageway exposed to the first interface portion, a reservoir located remo... | 08/28/2007 |
| 7243631 | Pull-start engine with a lubricating unit A pull-start engine includes a crankcase unit, a pull-start unit, a gearbox unit, and a lubricating unit. The crankcase unit includes a crankcase and a crankshaft. The gearbox unit includes a gearbox and a drive shaft. The pull-start unit is sleeved fixedly on the c... | 07/17/2007 |
| 7191742 | Diesel aircraft engine The present invention is an engine, including two banks of cylinders in a flat, opposed cylinder arrangement and a crankshaft having a plurality of paired throws, the two throws of each respective pair of throws being disposed adjacent to each other and coplanar wit... | 03/20/2007 |
| 7178488 | Device comprising at least one functional unit of a camshaft adjusting device In an arrangement comprising at least one operating unit of a camshaft adjusting device for an internal combustion engine, the operating unit and at least one ventilation unit of a ventilation device are combined in an assembly module. ... | 02/20/2007 |
| 7172054 | Apparatus and method for lubricating and cooling gear mechanisms A device for lubricating and cooling gear mechanisms has a supply line for supplying lubricating and coolant oil from an oil sump into a first channel in a spray pipe. The first spray channel connects to at least one first nozzle for the targeted spraying of the lub... | 02/06/2007 |
| 7096846 | Engine and transmission case assembly The present invention provides a motorcycle including a front wheel, a rear wheel, a frame supported by the front and rear wheels, a crankcase including a first interface portion and a first passageway exposed to the first interface portion, a reservoir located remo... | 08/29/2006 |
| 7096844 | Four-stroke engine lubricated by fuel mixture A four-stroke engine includes a piston cylinder, and a piston located in the cylinder and movable within the cylinder. The engine includes a crankcase attached to the cylinder, the piston providing a separation boundary of a combustion portion of the cylinder from t... | 08/29/2006 |
| 7055471 | Hydraulic lifter feed gallery with aeration removal orifice An apparatus and method for providing lubricant to a plurality of hydraulic lifters in an internal combustion engine is disclosed, in which the amount of gas bubbles present in the lubricant provided to the lifters is reduced or eliminated so that lifter noise is re... | 06/06/2006 |
| 7036480 | Engine lubrication system A lubrication system for an engine includes a sump for lubricant, a pump to pump lubricant along a lubricant feed line to lubrication positions within the engine, and a lubricant conditioner, and wherein the pump is an electrically driven pump which is controlled by... | 05/02/2006 |
| 7007655 | Engine lubrication system A vehicle comprises a vehicle body. A drive system is mounted to the vehicle body. An internal combustion engine is mounted to the vehicle body and coupled with the drive system. The engine comprises a crankshaft mounted in a crankcase. An oil pan is detachably coup... | 03/07/2006 |
| 6955573 | Small watercraft A small watercraft including an engine mounted in a body such that an axial direction of a crankshaft corresponds with a longitudinal direction of the body, an oil tank provided such that a longitudinal direction thereof corresponds with the axial direction of the c... | 10/18/2005 |
| 6928729 | Cylinder head and crankcase manufacturing and assembly techniques A method of manufacturing a cylinder head and crankcase for a small engine. A crankcase and a cylinder head are cast to close tolerances and include as-cast mounting flanges, which are assembled in face-to-face contact by employing self-threading screws. Bearing rec... | 08/16/2005 |
| 6923158 | Engine torque control apparatus An engine torque control apparatus for controlling the output torque of an engine (60) connected to a transmission (40) in a vehicle has a temperature sensor (55) for detecting the temperature of oil used by the transmission (40), and a c... | 08/02/2005 |
| 6915770 | Lubricating oil supplying structure of an engine An engine has a through hole and a fitting hole on a lower portion of a crankcase, an oil container under the crankcase, a conduit inserted in the fitting hole, and a check valve disposed over a lower end of the through hole; lubricating oil is contained in the cont... | 07/12/2005 |
| 6845744 | Method and apparatus for inter-cylinder lubrication transfer in a multi-cylinder internal combustion engine The present invention is directed to a lubrication system for a multi-cylinder internal combustion engine. An inter-cylinder lubricant communications system is provided to circulate lubricant from an upper-most cylinder to each successive cylinder downstream. This s... | 01/25/2005 |
| 6823968 | Oil collecting arrangement for an internal-combustion engine, particularly for an opposed-cylinder engine The invention relates to an oil collecting arrangement for an internal-combustion engine having an oil collecting housing arranged below a crankcase in which an oil suction space is constructed and at least one oil collecting space adjoins the oil suction space. The... | 11/30/2004 |
| 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 |
| 6614345 | Oil pressure warning system for outboard motor An oil pressure warning system for an outboard motor for detecting and alarming an abnormal oil pressure of an internal combustion engine, the system including a first oil pressure switch which generates an ON signal when the oil pressure is less than or ... | 09/02/2003 |
| 6457449 | Motorcycle engine cam chest having reed valve assembly A motorcycle engine includes a crankcase, a cam chest, and a separating wall between the crankcase and cam chest. An opening is defined in the wall and communicates between the cam chest and crankcase. A valve assembly, which is preferably a reed valve as... | 10/01/2002 |
| 6314934 | Lubricating device for internal combustion engine In an engine having a dry sump type lubrication structure, a feed pump, a sub-scavenging pump, and a main scavenging pump of an oil pump are all integrally provided by disposing a feed pump rotor, a sub-scavenging pump rotor, and a main scavenging pump ro... | 11/13/2001 |
| 6253727 | Oil passage structure for returning oil in an engine To deem a dedicated oil passage unnecessary and therefore make an engine equipped with a plurality of cylinder bores with substantially horizontal axes and provided with transmission mechanisms between a camshaft and crankshaft within a valve chamber more... | 07/03/2001 |
| 6244238 | Crankcase for a multiple cylinder engine A journal wall of an in-line four cylinder engine is provided with an oilway and bolt fastening sections. A center of a breathing hole punched in the journal wall avoids the oilway and the bolt fastening sections by being offset by a predetermined amount ... | 06/12/2001 |
| 6189496 | Breather valve, arrangement and method A breather valve and arrangement for an internal combustion engine, having a scavenge hole that is open for a relatively long period of time relative to piston travel. Scavenge hole preferably subtends an angle of between 20° and 150°, and preferably is... | 02/20/2001 |
| 6161515 | Method for controlling output pressure of an engine oil pump A lubrication system is provided, including a pressure control valve for regulating oil pressure in an internal combustion engine of a motor vehicle. An oil pump for circulating oil through the lubrication system is connected in flow communication with an... | 12/19/2000 |
| 6145484 | Four-cycle engine having improved lubricating mechanism A four-cycle engine in which a mixed gas of a fuel and air containing a lubricating oil is transferred from a carburetor to a cylinder or a crank chamber, the gas is pushed out in the stage of descending the piston to the passage on the reverse side, tran... | 11/14/2000 |
| 6116205 | Motorcycle lubrication system A lubrication system for a motorcycle engine includes a camshaft support plate that is separable from an ornamental cam cover. The camshaft support plate at least partially defines a cam chest of the engine. A crankcase defines a crankcase sump and the ca... | 09/12/2000 |
| 6073618 | Engine oil fill assembly with integral funnel and oil separator An engine oil fill assembly includes a tubular pipe portion with an upper end forming with an oil inlet and a lower end forming an oil outlet and air inlet adapted to be connected to the engine crankcase. The fill pipe inlet has an enlarged mouth to facil... | 06/13/2000 |
| 6067952 | Cylinder bore lubrication with residual oil A lubrication system for an internal combustion engine provides drain openings at locations within individual crankcase portions where residual oil collects during normal operation. The drain openings are connected to orifices formed through cylinder wall... | 05/30/2000 |
| 6058900 | Internal combustion engine with improved cylinder wall lubrication system An internal combustion engine is provided with fluid passages between adjacent cylinders. The fluid passages extend through walls that separate adjacent cylinders and are located axially within the cylinders at positions which advantageously define the pe... | 05/09/2000 |
| 6032635 | Overhead cam engine with integral head A single cylinder, internal combustion engine with a dry sump lubrication system. The engine includes an engine housing in which the overhead camshaft and crankshaft are rotatably supported, and the housing includes an integrally formed cylinder and head.... | 03/07/2000 |
| 5975042 | Oil supply apparatus of a four-stroke-cycle engine An oil supply passage is provided for connecting an oil chamber with a valve chamber, an oil feed passage for connecting a valve chamber with a crank chamber, and an oil return passage for connecting the crank chamber with the oil chamber. The oil return ... | 11/02/1999 |
| 5964198 | Lubrication system of internal combustion engine A lubrication system of an internal combustion engine is composed of an engine oil case and an engine oil pump located in the engine oil case such that an inlet of the engine oil pump is located in proximity of a geometrical center of the interior of the ... | 10/12/1999 |
