Did You Know...
...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...
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| Number | Title | Issue Date |
| 8113155 | Two-cycle engine A two-cycle engine includes a starting fuel supply passage for supplying a starting fuel to a crankcase from a starting fuel reservoir, and a flow passage opening and closing unit provided in a midway portion of the starting fuel supply passage. The starting fuel su... | 02/14/2012 |
| 7730857 | Internal combustion engine with air filter shield preventing soiling An internal combustion engine has a carburetor and an intake channel for supplying fuel and combustion air, wherein a section of the intake channel is formed in the carburetor. At least one fuel opening is provided that opens into the intake channel within the carbu... | 06/08/2010 |
| 7367295 | Exhaust control valve for internal combustion engine An exhaust valve assembly for a two stroke internal combustion engine having a cylinder with at least one main exhaust port and one auxiliary exhaust port is disclosed. The assembly comprises a main exhaust valve for at least partially closing the main exhaust port,... | 05/06/2008 |
| 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 |
| 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 |
| 7322322 | Stratified-scavenging two-stroke internal combustion engine In a stratified-scavenging two-stroke internal combustion engine, air-fuel mixture outlets (14b) and air outlets (15b) are provided on either side of a cylinder (3), and the air-fuel mixture outlets (14b) and the air ... | 01/29/2008 |
| 7299773 | Cylinder for a two stroke engine A cylinder for a two-stroke engine has a cylinder wall defining a cylinder interior. A cylinder head closes of a combustion chamber in the cylinder interior. An exhaust is connected to the cylinder interior. At least one transfer passage having a transfer port opens... | 11/27/2007 |
| 7225769 | Two-stroke cycle engine This invention concerns a two-stroke cycle engine, more specially it concerns a two-stroke cycle engine using a preceding air-layer for scavenging. It has a scavenger passage connected to a branching scavenger passage opened to said scavenging port. The engine has a... | 06/05/2007 |
| 7210432 | Internal combustion engine A two-stroke engine is for a portable handheld work apparatus such as a motor-driven chain saw, cutoff machine, brushcutter or the like. A combustion chamber (3) is configured in the cylinder (2) of the engine (1) and is delimited by a reciproca... | 05/01/2007 |
| 7165597 | Insert core and method for manufacturing a cylinder for internal combustion engine by making use of the insert core There is provided a method of cast molding a cylinder for an internal combustion engine by making use of an insert core, which makes it possible to rationally form the chamfered portions at the rim portion, on the cylinder bore side, of the scavenging ports, the suc... | 01/23/2007 |
| 7159314 | Method for making a cylinder A cylinder housing (1) is cast with a cylinder wall (2) in the making of a cylinder for an internal combustion engine. The cylinder wall delimits an interior space (3) for accommodating a reciprocating piston and, thereafter, a control window ( | 01/09/2007 |
| 7146942 | Two-cycle combustion engine with air scavenging system having pressure reducing device To provide an improved air scavenging type two-cycle combustion engine equipped with a pressure reducing device in which clogging of a decompressing hole can easily be removed, a two-cycle combustion engine includes a delivery passage (32) for introducing air... | 12/12/2006 |
| 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 |
| 7100550 | Two-stroke engine transfer ports A two-stroke internal combustion engine including a cylinder; and a piston movably mounted in the cylinder. The cylinder includes an exhaust port and transfer ports. The transfer ports include a first pair of the transfer ports disposed closer to the exhaust port th... | 09/05/2006 |
| 7082910 | 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 passage is arranged from an air inlet ( | 08/01/2006 |
| 7074097 | Marine exhaust system with an exhaust flow directing device An exhaust system for a marine engine provides a flow directing component that reacts to changes in engine speed to select an appropriate and advantageous direction of fluid flow through the flow directing component. At speeds below a first threshold speed magnitude... | 07/11/2006 |
| 7066119 | Two-stroke engine A two-stroke engine includes a scavenging passage opening in a combustion chamber in a scavenging stroke to fill the combustion chamber with a working gas containing a fuel; and a scavenge filling chamber communicating through a communicating port with the scavengin... | 06/27/2006 |
| 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 |
| 7017535 | Carburetor for two-stroke engine The present invention provides a carburetor that can be adapted to a variety of engines with different positional relationships between the location for feeding the air/fuel mixture and the location for feeding scavenging air. The carburetor a carburetor main body (... | 03/28/2006 |
| 7013850 | Two-stroke engine A two-stroke engine has a cylinder defining a combustion chamber which is delimited by an upwardly and downwardly moving piston which drives a crankshaft via a connecting rod. The crankshaft is rotatably journalled in the crankcase (4). The two-stroke engine ... | 03/21/2006 |
| 6973899 | Stratified air scavenged two-cycle engine with air flow An SAS two-cycle engine has a cylinder block that has a bore with at least one scavenging port and at least one fresh air port therein. The bore extends to a crankcase. A piston of the engine is located within the bore and separates a combustion chamber of the bore ... | 12/13/2005 |
| 6945211 | Cylinder head of an internal combustion engine In a cylinder head of an internal combustion engine, a plug hole for mounting an ignition plug is formed along a cylinder axis and an intake port and an exhaust port are respectively formed at both sides of the plug hole while sandwiching the cylinder axis therebetw... | 09/20/2005 |
| 6918359 | Rigid connecting duct A portable, manually-guided implement, such as a cut-off machine, is provided and has an internal combustion engine, a cylinder of which has a combustion chamber with an exhaust gas outlet. The combustion chamber is delimited by a piston that, via a connecting rod, ... | 07/19/2005 |
| 6899067 | Two-stroke engine and method of operating the same A two-stroke engine, especially for a portable handheld work apparatus, includes a combustion chamber configured in a cylinder. The combustion chamber is delimited by a piston which moves upwardly and downwardly. Combustion air is supplied to the engine via an air c... | 05/31/2005 |
| 6892682 | Two-stroke internal combustion engine with internal scavenging The invention relates to a two-stroke internal combustion engine with longitudinal scavenging, with at least one piston reciprocating in a cylinder, with at least one exhaust valve disposed in the cylinder head floor and with at least one intake slot per cylinder wh... | 05/17/2005 |
| 6851402 | Two-stroke engine and method for operating the same A two-stroke engine (1) for a work apparatus includes a combustion chamber (3) configured in a cylinder (2). The engine includes a piston (5, 21) which drives a crankshaft (7) via a connecting rod (6). The crankshaft (7 | 02/08/2005 |
| 6842978 | 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... | 01/18/2005 |
| 6729274 | Cylinder and method for manufacturing a cylinder for an internal combustion engine A cylinder and a method for manufacturing a cylinder for an internal combustion engine is provided which avoids the generation of a step portion at the scavenging port without necessitating enhanced precision of the positioning of the working tools or the working lo... | 05/04/2004 |
| 6668770 | Two-stroke interal combustion engine Crankcase scavenged two-stroke internal combustion engine, in which at least one piston ported air passage, with length Lai, is arranged between an air inlet (2) and each scavenging port (31, 31') of a number of transfer ducts (3, 3'), with len... | 12/30/2003 |
| 6647933 | Electronic control unit for two-cycle internal combustion engine An electronic control unit for a two-cycle internal combustion engine including an exhaust control valve which adjusts exhaust timing, a valve controller which controls the exhaust control valve, and a reversal controller which controls reversing a rotati... | 11/18/2003 |
| 6640755 | Two-cycle internal combustion engine A two-cycle internal combustion engine which is capable of inhibiting air-fuel mixture from being mixed with the air introduced in advance into the combustion actuating chamber during the scavenging period, thereby realizing a complete lamellar scavenging... | 11/04/2003 |
| 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 |
| 6564761 | Two-stroke cycle engine This invention concerns a two-stroke cycle engine, more specially it concerns a two-stroke cycle engine using a preceding air-layer for scavenging. It has a scavenger passage connected to a branching scavenger passage opened to said scavenging port. The e... | 05/20/2003 |
| 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 |
| 6546901 | Two cycle internal combustion engine A crankshaft driven positive displacement gear type air compressor enclosed within the engine housing forces air in between the compressor and reciprocating means. At approximately top dead center fuel is injected into the engine and burns. The high press... | 04/15/2003 |
| 6491005 | Die cast metal cylinder assembly for a two-stroke engine A cylinder is produced of die cast metal and is for a two-stroke engine in a portable handheld work apparatus such as a motor chain saw. A combustion chamber (3) is formed in the cylinder (2) and this combustion chamber is delimited by a piston (5). In th... | 12/10/2002 |
| 6460494 | Compressed air assisted fuel injection system with reflection wave and variable restriction injection port An internal combustion engine having a combustion chamber and a fuel delivery system for delivering fuel into the combustion chamber. The fuel delivery system includes a fuel entry proximate the combustion chamber, a combustion compression wave reflection... | 10/08/2002 |
| 6408805 | Two-stroke cycle engine This invention concerns a two-stroke cycle engine, more specially it concerns a two-stroke cycle engine using a preceding air-layer for scavenging. It has a scavenger passage connected to a branching scavenger passage opened to said scavenging port. The e... | 06/25/2002 |
| 6394049 | Exhaust valve device for two-cycle engine A common drive shaft for first and second exhaust control valves is formed of a single piece. A first exhaust valve adjusting exhaust timing and a second exhaust valve adjusting a sectional area of an exhaust passage are provided on the common drive shaft... | 05/28/2002 |
| 6367431 | Two-stroke cycle engine A two-stroke cycle engine having an improvement of its power output while reducing total hydrocarbons in the exhaust gases. The two-stroke cycle engine comprises a crank chamber adapted to receive a fuel mixture through feed means and a combustion chamber... | 04/09/2002 |
