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 |
| 7975659 | Cylinder/crankcase group for two-stroke internal combustion engines provided with means for supercharging the engine A fuel injection system for a two-stroke internal combustion engine (1), elastically housed internally of a chamber, comprises a carburetor (30) to which are associated an induction port (9) for an air/fuel mixture and a fuel supply conduit (... | 07/12/2011 |
| 7409933 | Two cycle internal combustion engine with direct fuel injection combustion system A two-cycle internal combustion engine is of the type having one cylinder (2), one piston (4) with connecting rod, one head (3) closing the cylinder (2) on the explosion chamber side, one crankcase (12) closing the cylinder (2 | 08/12/2008 |
| 7331315 | Two-stroke engine with fuel injection A two-stroke internal combustion engine is provided with a fuel injector. The two-stroke internal combustion engine may have at least one transfer passage, an air channel, and a fuel injector. The transfer passage is between a crankcase and a combustion chamber of t... | 02/19/2008 |
| 7331314 | Two-stroke engine A two-stroke engine has a cylinder with a combustion chamber that is delimited by a reciprocating piston that drives with a connecting rod a crankshaft rotatably supported in a crankcase. In predetermined positions of the piston, the crankcase is connected by at lea... | 02/19/2008 |
| 7325528 | Method of operating a single cylinder two-stroke engine The invention is directed to a method for operating a two-stroke engine having a cylinder in which a combustion chamber is formed and which includes devices for metering fuel and supplying combustion air as well as an ignition device for igniting a mixture in the co... | 02/05/2008 |
| 7267326 | Automatic priming system An automatic priming system for internal combustion engines, which is operable to prime the carburetor of the engine at engine cranking speeds, and is automatically disabled after the engine starts. The automatic priming system is driven by pressure fluctuations wit... | 09/11/2007 |
| 7261088 | Internal combustion engine hydraulic fuel pump An internal combustion engine fuel pump having at least one cylinder, in which a variable-volume pump chamber is defined; a movable piston defining the bottom of the pump chamber; at least one intake valve communicating with the pump chamber; at least one delivery v... | 08/28/2007 |
| 7257993 | Method of operating a single cylinder two-stroke engine A method operates a single cylinder two-stroke engine having a cylinder wherein a combustion chamber is formed which is delimited by a piston. The piston drives a crankshaft rotatably journalled in a crankcase. In the method, fuel and combustion air are supplied to ... | 08/21/2007 |
| 7228825 | Two-stroke engine assembly A two-stroke engine includes an air channel for supplying substantially fuel-free combustion air and a mixture channel for supplying an air/fuel mixture. The air channel and the mixture channel connect the cylinder of the two-stroke engine to an air filter. A sectio... | 06/12/2007 |
| 7216635 | Evaporative emission controls in a fuel system A method, fuel system, and components for facilitating the delivery of liquid fuel from a fuel tank in fluid communication with a float bowl carburetor of an internal combustion engine, wherein evaporative emissions of the fuel from the fuel tank and float bowl carb... | 05/15/2007 |
| 7203593 | Air starter and electronic control therefor An in-head compressed air start-up system for an internal combustion engine comprises an absolute angular position detector for the crankshaft outputting an electrical signal indicative of the angular position, a computer for storing a table of the firing order of t... | 04/10/2007 |
| 7198011 | Internal combustion engine There is provided a two stroke internal combustion engine comprising a cylinder and a piston. The cylinder has a cylinder head, a wall and a crankcase. The wall extends between the cylinder head and the crankcase. The cylinder head has a first opening and a second o... | 04/03/2007 |
| 7168401 | Multi-location fuel injection system A two-stroke engine having both a direct injector and an indirect injector. The direct injector injects fuel into the cylinder without passing through the crank case. The indirect injector is in fluid communication with the crank case. It provides fuel delivery thro... | 01/30/2007 |
| 7131406 | Two-cycle engine having scavenging A two-cycle engine in a portable, manually-guided implement, such as a power chain saw, a cut-off machine, a brush cutter, or the like, is provided. The cylinder has a combustion chamber that is delimited by a reciprocating piston that via a connecting rod drives a ... | 11/07/2006 |
| 7104250 | Injection spray pattern for direct injection spark ignition engines A system and method for controlling combustion in a direct injection spark ignition internal combustion engine inject fuel directly into a combustion chamber through an injector having an ignition jet or group of jets positioned primarily to support stratified charg... | 09/12/2006 |
| 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 |
| 7044091 | Cylinder for an internal combustion engine of a manually guided implement A cylinder for an internal combustion engine of a manually guided implement, and a method of producing such a cylinder, are provided. A cast cylinder body that peripherally delineates a cylinder chamber has formed therein at least one transfer channel that is open i... | 05/16/2006 |
| 7025021 | Two-stroke internal combustion engine Crankcase scavenged two-stroke internal combustion engine (1), in which a piston ported air passage is arranged between an air inlet (2) and the upper part of a number of transfer ducts (3, 3′). The air inlet is equipped with a restriction val... | 04/11/2006 |
| 7000594 | Electronic control unit for two-cycle internal combustion engine with exhaust control valve An electronic control unit for controlling a fuel injection amount of a two-cycle internal combustion engine with an exhaust control valve wherein the electronic control unit comprises an injection amount determination means for determining the fuel injection amount... | 02/21/2006 |
| 7003393 | Method and apparatus for providing interface to original equipment engine control computer Method and apparatus for retrofitting a low impedance fuel injection system to a high impedance fuel injection system internal combustion engine is disclosed. The original high impedance electronic control system may be retained, while system modification circuitry ... | 02/21/2006 |
| 6915772 | Automatic priming system An automatic priming system for internal combustion engines, which is operable at engine cranking speeds and which is automatically disabled at engine running speeds. The automatic priming system is driven by pressure fluctuations within the engine crankcase which a... | 07/12/2005 |
| 6912996 | Engine with fuel injection system An engine incorporates a fuel injector to supply fuel to a combustion chamber defined in an engine body. At least one fuel rail defines a fuel passage through which fuel is supplied to the fuel injector. The fuel rail is mounted to the engine body. A fuel pump press... | 07/05/2005 |
| 6913250 | Carburetor arrangement A carburetor arrangement for an internal combustion engine in a manually guided implement, such as a power chainsaw, a cut-off machine, etc. is provided. A regulating chamber delimited by a regulating diaphragm is provided. Upon deflection of the diaphragm due to un... | 07/05/2005 |
| 6830029 | Fuel supply device for outboard motor An integrated direct fuel injector position is incorporated providing better fuel atomization within the combustion chamber. The direct fuel injector position is integrated between within an intake passage body and a cylinder head assembly eliminating the need for a... | 12/14/2004 |
| 6792910 | Oil injection system A cylinder block assembly for an internal combustion engine having a cylinder block and a plurality of cylinders includes an oil port in each of the cylinders. An annular groove is located in each cylinder wall so that oil flowing from the oil port flows into the an... | 09/21/2004 |
| 6739308 | Fuel igniter and head for use in diesel engines and related systems and methods The present invention provides a piston for a diesel engine that reduces emissions generated during the combustion of fuel in a combustion chamber and a head that allows more air to flow into and out of the combustion chamber. The piston includes an igniter that ign... | 05/25/2004 |
| 6722341 | Fuel injection control system and control method for two-cycle in-cylinder direct injection engine A fuel injection control system of a two-cycle in-cylinder direct injection engine, wherein: in a low speed area, an injection of fuel is started immediately after a scavenging port of the engine has been closed, and all fuel is injected during the time when an exha... | 04/20/2004 |
| 6647713 | Stratified scavenging two-cycle engine with catalyst A stratified scavenging two-cycle engine with catalyst capable of meeting such a requirement that a THC exhaust rate is 54 [g/kW.multidot.h] or less with use of catalyst. For this purpose, in the stratified scavenging two-cycle engine in which an air feed... | 11/18/2003 |
| 6644252 | Two-stroke engine with storage duct A two-stroke engine in a hand-held working tool such as a motor chainsaw has a combustion chamber delimited by a piston which drives a crankshaft. An outlet for removing exhaust gases from the combustion chamber and an intake for supplying fresh mixture t... | 11/11/2003 |
| 6606971 | Small engine fuel injection system A fuel injection system injects a rich mixture of fuel-and-air directly into a cylinder of a two cycle engine through an intake port for combustion. A charge forming device of the fuel injection system carries a primary air intake passage which flows air ... | 08/19/2003 |
| 6601550 | Method for operating a two-stroke engine The invention is directed to a method for operating a two-stroke engine in a portable handheld work apparatus. The engine includes a cylinder (12) and a combustion chamber (26) which is delimited by a reciprocating piston (14). The combustion chamber incl... | 08/05/2003 |
| 6591793 | Two-cycle engine Apparatuses and methods for controlling HC in exhaust, with Schnuerle type 2-cycle engine. When piston reaches near dead center point, the ends of the channel at the bottom end of piston reach from outlet ports and No. 1 transfer ports, and exhaust gas fr... | 07/15/2003 |
| 6591792 | Two-cycle engine Apparatuses and methods for reducing hydrocarbons in two-stroke engine exhaust. When a piston is close to top dead center, a groove in the lower end region of the piston confronts an exhaust port and first scavenging ports, respectively, and exhaust gas f... | 07/15/2003 |
| 6588382 | Two-cycle internal combustion engine A two-cycle internal combustion engine including: a cylinder; an exhaust opening provided in a portion, on one side in the peripheral direction, of the cylinder; a plurality of scavenging openings for performing schnurle scavenging, the scavenging opening... | 07/08/2003 |
| 6564759 | Injection port for internal combustion engine An internal combustion engine having a cylinder with a piston movement area; a piston movably mounted in the cylinder; an ignition system connected to the cylinder; and a fuel delivery system connected to the cylinder. The fuel delivery system has a combi... | 05/20/2003 |
| 6539900 | Two-stroke internal combustion engine with crankcase scavenging The invention relates to a two-stroke internal combustion engine with crankcase scavenging, with an exhaust passage controlled by the piston and at least two first transfer passages and at least one second transfer passage, each with a corresponding trans... | 04/01/2003 |
| 6536385 | Piston ring A piston ring comprises a plurality of recesses that are formed in its outer peripheral edge. The recesses have any of a number of profiles such as semicircular, chordal, arcuate, and triangular. The piston ring controls the passage of lubricant between a... | 03/25/2003 |
| 6536386 | Assist gas fuel injection mechanism for 2-cycle internal combustion engine An assist gas fuel injection mechanism for a 2-cycle internal combustion engine includes a chamber communicated to a combustion chamber through a communicating passage. A rotary valve is provided in the communicating passage for controlling the opening an... | 03/25/2003 |
| 6530349 | Two-cycle internal combustion engine To provide a two-cycle internal combustion engine including a combustion chamber; a chamber portion adjacent to the combustion chamber; a communication passage between the combustion chamber and the chamber portion; and a control valve, provided in the co... | 03/11/2003 |
| 6505600 | Direct injection two stroke engine combustion mapping A control unit is provided for an internal combustion engine including an engine block comprising a plurality of cylinders operable in a homogenous combustion mode and a stratified combustion mode in response to an engine throttle position. The control un... | 01/14/2003 |
