Quotables
"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7669561 | High-output two-stroke engine in particular for application in model assembly A two-stroke engine has a piston, mounted to be displaced in a cylinder, connected by means of a connecting rod to a crankshaft mounted to rotate about an axis in a crankcase that defines a crankcase chamber. The crankshaft includes a crankshaft duct that opens into... | 03/02/2010 |
| 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 |
| 7377496 | Carburetor for two-cycle engine An interlocking lever having first and second cam faces is mounted on a throttle valve stem, and a throttle valve is arbitrarily opened to perform start-up in a state in which the first cam face makes contact with the choke valve lever and the interlocking lever is ... | 05/27/2008 |
| 7373906 | Power tool A power tool is driven by a two-stroke engine. The two-stroke engine has a cylinder and a piston reciprocating within the cylinder. The cylinder has a combustion chamber delimited by the piston. The two-stroke engine has a crankcase and a crankshaft rotatably suppor... | 05/20/2008 |
| 7370512 | Gas analyzer apparatus A gas analyzer apparatus including a support tube having a distal portion arranged in a flue and a gas sensor supported on the support tube. An air supply tube supplies cooling air into the support tube. A basal portion of the gas sensor is cooled by the cooling air... | 05/13/2008 |
| 7363888 | Two-stroke engine A two-stroke engine has a cylinder and a piston reciprocating in the cylinder and delimiting a combustion chamber. The piston has at least one piston recess. A crankshaft is rotatably arranged in a crankcase connected to the cylinder. A connecting rod connects pisto... | 04/29/2008 |
| 7337759 | Engine The invention involves an engine that the cylinder block contains a coupled piston formed by a main piston, an external piston. The external piston is sleeved outside of the main piston and uses the rods on the two sides to connect to the heart-shape groove on the t... | 03/04/2008 |
| 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 |
| 7331324 | Crankshaft rotary valve A crankshaft rotary valve that controls fluid flow between a port located circumferentially on the crankshaft and a crankcase chamber formed by a piston, cylinder, crankcase and crankshaft. As the crankshaft rotates, a channel in the crankshaft communicates with the... | 02/19/2008 |
| 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 |
| 7258087 | Air intake porting for a two stroke engine A two stroke engine of a particular configuration can have its power output increased by running bigger pistons and using ports in the piston skirt through which to conduct compressed air within the skirt through short passages in the cylinder housing that conduct t... | 08/21/2007 |
| 7255071 | Supercharged two-stroke engine with upper piston extensions An apparatus useful in a two-stroke cycle engine or in a pump as a piston disposed within a piston cylinder. The piston cylinder has an intermediate piston cylinder head disposed transversely across the interior of the piston cylinder. The piston has at least one up... | 08/14/2007 |
| 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 |
| 7082932 | Control system for an internal combustion engine with a supercharger A method is provided in which a marine propulsion system with a charge air compressor is controlled through the use of a clutch or a multiple speed transmission that allows the charge air compressor to be engaged or disengaged. The engagement or disengagement of the... | 08/01/2006 |
| 6978744 | Two-cycle combustion engine with air scavenging system The two-cycle combustion engine includes a first scavenge passage (12) for communicating directly between a combustion chamber (1a) and a crank chamber (2a), a second scavenge passage (14) for communicating the combustion ch... | 12/27/2005 |
| 6966283 | Apparatus with piston having upper piston extensions An apparatus useful in a two-stroke cycle engine or in a pump as a piston disposed within a piston cylinder. The piston cylinder has an intermediate piston cylinder head disposed transversely across the interior of the piston cylinder. The piston has a lower portion... | 11/22/2005 |
| 6957633 | Carburetor for two-cycle engine An interlocking lever having first and second cam faces is mounted on a throttle valve stem, and a throttle valve is arbitrarily opened to perform start-up in a state in which the first cam face makes contact with the choke valve lever and the interlocking lever is ... | 10/25/2005 |
| 6742482 | Two-cycle internal combustion engine A two-cycle engine having improved performance characteristics includes a block and a cylinder head coupled to the block, the cylinder head defining a cylinder bore and a precombustion chamber. The head of piston located in the cylinder bore divides the bore into fi... | 06/01/2004 |
| 6662764 | Two stroke engine This invention relates to an improvement of two stroke engine in which a sleeve piston is employed to move up and down in the cylinder and to control alternatively the opening and closing of the intake guide and exhaust guide and to prevent the lubricant ... | 12/16/2003 |
| 6629514 | Two stroke gasoline engine with rotary valve enabling double acting power strokes and rotary air valve to lessen blowback A piston mechanism for gas driven engines, fluid motors, pumps and the like that has a piston in a chamber that is moveable in the chamber in a reciprocating action and a rotating shaft that is driven by or drives the piston, wherein a double eccentric dr... | 10/07/2003 |
| 6595178 | Two-stroke internal combustion engine A two-stroke internal combustion engine is disclosed capable of reducing the number of pieces constituting the main body, thereby making it possible to reduce the number of parts such as assembling bolts and hence to reduce the manufacturing cost as well ... | 07/22/2003 |
| 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 |
| 6484709 | Valve arrangement for combustion sensor An arrangement for utilizing a combustion sensor with an internal combustion engine. The arrangement includes a sensor mounted to the outside of an engine cylinder for communication with exhaust gasses within the cylinder via a sampling passage. A mountin... | 11/26/2002 |
| 6352058 | Air scavenging two-stroke cycle engine It is an object of the invention to provide an air scavenging two-stroke cycle engine capable of smoothly supplying fuel-air mixture into a combustion chamber, reducing the number of parts to thereby reduce cost, and suppressing the blow-by of the fuel-ai... | 03/05/2002 |
| 6257179 | 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... | 07/10/2001 |
| 6152092 | Internal combustion engine Crankcase scavenged internal combustion engine (1) of two-stroke type, intended for a working tool, preferably a chain saw or a trimmer, and provided with a light-weight and compact muffler (2). The engine is arranged with a particularly high crankcase co... | 11/28/2000 |
| 6135070 | Two cycle 60 degree V6 and 90 degree V4 internal combustion engine Disclosed is a two cycle engine designed and configured to replace conventional four cycle engines in a modern day automobile without any alternations, while steel accepting all of the accessories (i.e. air conditioning, power steering, alternators), with... | 10/24/2000 |
| 6135083 | Diesel engine for vehicle A two cycle, crankcase compression, diesel engine having a high specific output. This is achieved by using an appropriately sized and located precombustion chamber into which the fuel is injected. The porting and direction of crankshaft rotation insure ag... | 10/24/2000 |
| 6119453 | Feed back control utilizing catalyst A feed back control system for a direct injected, two cycle engine having a catalytic exhaust. The injection control is modified if the catalyst overheats to control its temperature.... | 09/19/2000 |
| 6044812 | Diesel engine, modification, and method The modification of the exhaust valve of a two cycle diesel engine in order to increase the amount of the valve stem travel and hence larger annular opening, without changing the total time period or degrees of crank shaft rotation during which time the e... | 04/04/2000 |
| 6019075 | Air and fuel delivery system for fuel injected engines An internal combustion engine has a fuel and air mixing device which utilizes an open bore venturi to draw fuel from the device and deliver a rich fuel and air mixture to a compressor driven by the engine for direct injection of the rich fuel and air mixt... | 02/01/2000 |
| 5964191 | Reverse rotation control system for two-cycle engine of motor vehicle A reverse rotation control system for a two-cycle engine of a motor vehicle which can be implemented inexpensively while preventing exhaust gas from degradation. The system includes a variety of sensors for generating signals corresponding to engine opera... | 10/12/1999 |
| 5881687 | Two-stroke internal combustion engine In a two-stroke internal combustion engine, output power is increased and total hydrocarbon (THC) exhaust is decreased as a result of small structural changes. An exhaust port and scavenging ports are configured and disposed such that they are open in a r... | 03/16/1999 |
| 5857449 | Two-cycle internal combustion engine A two-cycle internal combustion engine provided with at least one fuel injection nozzle, wherein the fuel injection nozzle is provided with a heating element for heating the fuel so as to cause the fuel to undergo a phase change before the fuel is injecte... | 01/12/1999 |
| 5832907 | Engine feedback control system An improved feedback control system and method for internal combustion engines that permits extremely accurate feedback control. This is done by utilizing a sensor device that is interrelated with the combustion chambers of the engine so that it only samp... | 11/10/1998 |
| 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 |
| 5794605 | Fuel control for marine engine A feedback control system for controlling the fuel/air ratio of an engine. The system employs a fuel/air ratio or combustion condition sensor and includes a checking system for checking if the sensor is providing reliable data. This is determined by deter... | 08/18/1998 |
| 5794574 | System for reversing 2 stroke engine A system for reversing the direction of a two-stroke, internal combustion engine provided with a spark ignition system, the engine having at least one cylinder and a piston reciprocating therein and connected to drive a rotary crankshaft, the system compr... | 08/18/1998 |
| 5666912 | Internal combustion engine An internal combustion engine in which the piston (10) rocks about a pivot point (60) with the piston (10) being connected adjacent the end remote from the pivot point (60) to a connecting rod (12) to drive a crankshaft. The piston (10) has a first arcuat... | 09/16/1997 |
