Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 7204214 | Multi-cylinder internal combustion engine #7 cylinder shares an exhaust manifold with #1 cylinder and is fired a predetermined firing interval after #1 cylinder. An exhaust cam shaft has a first cam for driving the exhaust cams of #1 cylinder and a second cam for driving the exhaust cams of #7 cylinder. A v... | 04/17/2007 |
| 7104252 | Crankcase venting rotary valve carburetor A four-stroke combustion engine is lubricated by a mixture of lubricant, fuel and air received from a rotary valve type carburetor. A cylinder of the engine houses a reciprocating piston and together they generally define a combustion chamber segregated from a gener... | 09/12/2006 |
| 7096850 | Four-cycle internal combustion engine To provide a four-cycle combustion engine wherein the air-fuel mixture can be smoothly passed at all times by the utilization of the reciprocating motion of the piston to effectively lubricate the valve operating mechanism and the cranking mechanism and also to allo... | 08/29/2006 |
| 7096843 | Multicylinder four-cycle combustion engine There is provided a multicylinder four-cycle combustion engine, in which a communication hole is formed, to allow gases to flow smoothly form one cylinder to another so that the pumping loss occurring within the cylinders can be reduced. The combustion engine (E) in... | 08/29/2006 |
| 7082751 | Gas compressor pollution control system and method A pollution control system and method for a compressor for compressing gas, according to which a combustion engine is connected to the compressor for driving the compressor, and the products of combustion from the engine are passed into the flow line connecting the ... | 08/01/2006 |
| 7073481 | In-cylinder combustion recipe for meeting tier 2 locomotive emissions regulations A diesel engine (E) has a combustion chamber (C), a piston (T) movable in the chamber, air intake and exhaust valves (IV, EV), and a nozzle (N) injecting fuel into the combustion chamber. By controlling characteristics of an air-fuel mixture, emissions produced by c... | 07/11/2006 |
| 7066146 | Controller of internal combustion engine A device for controlling an internal combustion engine, comprising a variable valve mechanism for varying opening areas (valve lift) or the working angles (valve-opening periods) of at least either the intake valves or the exhaust valves, wherein a pressure in the c... | 06/27/2006 |
| 7043349 | Method and system for inferring exhaust temperature of a variable compression ratio engine A method for operating a variable compression ratio internal combustion engine includes the steps of determining a compression ratio operating state of the engine and inferring an exhaust temperature for the engine based at least in part on the compression ratio ope... | 05/09/2006 |
| 6928980 | Control device for spark-ignition engine A control device switches an engine between normal operation mode and special operation mode. In the normal operation mode, an independent cylinder configuration is formed to produce combustion independently in individual cylinders. In the special operation mode, a ... | 08/16/2005 |
| 6918804 | Personal watercraft A personal watercraft comprising a water jet pump, an engine for driving the water jet pump, and a mechanically driven supercharger provided independently of the engine and configured to draw taken-in air to the engine. ... | 07/19/2005 |
| 6810849 | Four-stroke internal combustion engine A four-stroke internal combustion engine is provided that is capable of use in many power tools, including those power tools subjected to tippable applications. There is provided within an engine housing an oil reservoir and a valve chamber which independently commu... | 11/02/2004 |
| 6536407 | Method of controlling the process of combustion in an internal combustion engine, and engine with means for controlling the engine valves Four-stroke internal combustion engine with electrically operated inlet and exhaust valves (9,11) and means for supplying a homogeneous fuel/air mixture to the engine cylinders (1). The valves are controlled by a control unit (15), which, within a lower r... | 03/25/2003 |
| 6408832 | Outboard motor with a charge air cooler An outboard motor is provided with an engine having a screw compressor which provides a pressurized charge for the combustion chambers of the engine. The screw compression has first and second screw rotors arranged to rotate about vertical axes which are ... | 06/25/2002 |
| 6405692 | Outboard motor with a screw compressor supercharger An outboard motor is provided with an engine having a screw compressor which provides a pressurized charge for the combustion chambers of the engine. The screw compression has first and second screw rotors arranged to rotate about vertical axes which are ... | 06/18/2002 |
| 6199532 | Four-stroke engine The invention is directed to a mixture lubricated four-stroke engine having a cylinder and a piston which delimits a combustion chamber in the cylinder. The piston drives a crankshaft via a connecting rod with the crankshaft being journalled in a crankcas... | 03/13/2001 |
| 5992375 | Four-stroke cycle internal combustion engine The present invention provides a small and light four-stroke cycle internal combustion engine applicable to a compact power working machine. A cylinder head is provided with an ignition plug and an exhaust port with an exhaust valve. A crankcase is fixed ... | 11/30/1999 |
| 5950590 | Operator carried power tool having a four-cycle engine and an engine lubrication method An engine powered hand-held power tool and engine lubrication method is provided, the power tool being intended to be carried by an operator during use. The power tool has a frame, including a handle to be grasped by the operator, an implement affixed to ... | 09/14/1999 |
| 5845618 | Engine for transport vehicle A number of embodiments of vehicles such as scooters that are powered a compact, high performance, four-cycle crankcase compression supercharged internal combustion engine. The engine is provided with two throttle valves, one on the intake side and one on... | 12/08/1998 |
| 5823162 | Way of operation of distribution mechanism of a four-stroke internal combustion engine The operation of a distribution system of a four-stroke internal combustion engine, which has suction and exhaustion mechanisms, is based on the principle that the exhaustion mechanism, which opens during an expansion stroke and stays opened during the ex... | 10/20/1998 |
| 5819702 | High efficiency vehicle and engine The efficiency of a vehicle having a body and a reciprocating piston four-stroke internal combustion engine is increased substantially by greatly reducing the size of the engine relative to the weight of the body. The great reduction in engine size relati... | 10/13/1998 |
| 5738062 | Operator carried power tool having a four-cycle engine A hand held powered tool is provided which is intended to be carried by an operator during use. The power tool has a frame, including a handle to be grasped by the operator, an implement affixed to the frame having a rotary input member and a small four-c... | 04/14/1998 |
| 5713330 | Internal combustion engine with supercharger An internal combustion engine with a supercharger with a piston arranged to be inserted into a cylinder so as to move in a reciprocating way, which has a bore size of the cylinder ranging from approximately 43 mm to 67 mm; a volume of a single chamber of ... | 02/03/1998 |
| 5445123 | Reciprocating engine of a spark ignition type A spark ignition type reciprocating engine of a natural intake system with an ignition plug arranged to face a combustion chamber defined and delimited by a piston inserted into a cylinder so as to move in a reciprocating way, which has: a bore size of th... | 08/29/1995 |
| 5433180 | Internal combustion engine with supercharger An internal combustion engine with a supercharger with a piston arranged to be inserted into a cylinder so as to move in a reciprocating way, which has a bore size of the cylinder ranging from approximately 43 mm to 67 mm; a volume of a single chamber of ... | 07/18/1995 |
| 5372108 | Engine charge control system and method An engine charge control system operates by initially reducing power from full load by retarding exhaust valve closing timing to increase exhaust gas charge dilution up to the limit for efficient operation. Further load reductions are made by reducing cha... | 12/13/1994 |
| 5241932 | Operator carried power tool having a four-cycle engine A hand held powered tool is provided which is intended to be carried by an operator during use. The power tool has a frame, including a handle to be grasped by the operator, an implement affixed to the frame having a rotary input member and a small four-c... | 09/07/1993 |
| 5140953 | Dual displacement and expansion charge limited regenerative cam engine A combination, in a supercharged expansible chamber engine having at least one cam driven piston, of a piston drive cam profile that alternately drives the piston to a higher or lower top dead center TDC position producing different expansion ratios, of a... | 08/25/1992 |
| 5072707 | Split thrust bearing for outboard engine A four cycle outboard engine having a crankshaft substantially vertically oriented when running A cylindrical block supporting the crankshaft. A thrust metal composed of a pair of semi-circular plates of different thicknesses are mounted in semi-circular ... | 12/17/1991 |
| 4934344 | Modified four stroke cycle and mechanism An internal combustion engine is disclosed with a modified four stroke cycle which takes place during a single crankshaft revolution, wherein a reciprocating piston moves through a compression stroke and power expansion stroke, each having a short duratio... | 06/19/1990 |
| 4321904 | Internal combustion engine with auxiliary combustion chamber An internal combustion engine includes a power cylinder, a power piston reciprocating therein and an auxiliary piston reciprocating within an auxiliary cylinder. Passages connect the upper end of the auxiliary cylinder to a combustion chamber and a source... | 03/30/1982 |
| 4300506 | Fuel supply system A fuel supply system for supplying fuel and for satisfactorily preparing the fuel-air mixture fed to a mixture-compressing, spark-ignited internal combustion engine which comprises an arbitrarily operable throttle element arranged in the air intake manifo... | 11/17/1981 |
| 4128086 | Automatic device for controlling the pressure of the intake air of an I.C. engine as its operating altitude varies This invention relates to an automatic device for controlling the pressure of the intake air of an internal combustion engine as its operating altitude varies. The device according to the invention comprises first valve means adapted to keep the air press... | 12/05/1978 |
| 4114585 | Internal-combustion engines A spark-ignition four-stroke gasoline engine, of the commonly mass-produced type having a plurality of cylinders provided each with two poppet valves mounted in a cylinder-head of the engine and constituting respectively an inlet valve, for passing a fuel... | 09/19/1978 |
| 4037570 | Stratified charge internal combustion engine A four stroke cycle internal combustion engine is disclosed with means to provide auxillary pumping of air directly into the cylinder. The piston head is provided with a sliding valve which is self-acting for injecting air into the cylinder during the int... | 07/26/1977 |
| 4027632 | Air injection engine The improvement in a combustion engine of the conventional type includes air inlet means disposed in the vicinity of an end of the cylinder facing away from the spark plug for receiving air into the cylinder, and a first plate attached to the cylinder in ... | 06/07/1977 |
| 4023536 | Method of controlling the timing of ignition in an internal combustion engine A method of controlling the timing of ignition in an internal combustion engine comprising cylinders and reciprocating pistons and having a supply of fuel and air to the cylinders by determining the conditions of temperature and/or pressure within at leas... | 05/17/1977 |
| 3971349 | Fuel feed of rotary cylinder combustion engines The invention is applied to a combustion engine having a stator and a rotor which defines, with the stator inner wall, radial rotating cylinders in which reciprocating pistons are adapted to reciprocate in such manner that the induction ports and exhaust ... | 07/27/1976 |
