Bizarre Patents
A method for inducing cats to exercise consists of directing a beam of invisible light produced by a hand-held laser apparatus onto the floor or wall.
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 |
| 7194989 | Energy efficient clean burning two-stroke internal combustion engine A precision cast engine has a piston unit and a rotor unit to translate linear thrust from the piston unit into rotary power. Each piston rod is attached to a thrust absorber carriage running on precision bearings to eliminate piston drag on the cylinder walls. One ... | 03/27/2007 |
| 7121232 | Method in an internal combustion engine and an internal combustion engine An internal combustion engine, Z-engine. The compression part and the working part are separated. New gas is transported to the upper side of the piston. Below there is a small chamber corner. When the piston comes nearer the upper hollow part, the combustion gases ... | 10/17/2006 |
| 7104227 | Internal combustion engine machine incorporating significant improvements in power, efficiency and emissions control A two stroke cycle internal combustion engine machine that does not require lubricating oil to be mixed with its fuel, producing greater efficiency, higher power to weight ratio, cooler operating temperatures, a wider speed range, greater simplicity, and lower toxic... | 09/12/2006 |
| 7003964 | Heat pump system A heat pump system (10) including a heat generator (15), a heat engine (26) supplied with heat engine working fluid (18) by the heat generator (15) having a heat engine cylinder chamber (34), a heat engine piston (32)... | 02/28/2006 |
| 6971340 | Compression pulse starting of a free piston internal combustion engine A method for starting an engine uses an actuator, such as a hydraulic or pneumatic pump-motor or an electric linear alternator-starter to move the pistons to a position where the inlet ports are opened. This ensures that air is present in the cylinder in a space whe... | 12/06/2005 |
| 6966280 | Compression pulse starting of a free piston internal combustion engine having multiple cylinders A method for starting a free piston internal combustion engine that includes a first pair of mutually connected pistons, a second pair of mutually connected pistons, a first piston of each pair located in a first cylinder, a second piston of each pair located in a s... | 11/22/2005 |
| 6966281 | Internal combustion device and methods of use An internal combustion device is provided for starting a parent engine, the device having a frame having a piston in a cylinder forming a combustion chamber, the frame further having an air passage and a fuel passage for receiving air and fuel into the combustion ch... | 11/22/2005 |
| 6959536 | Fuel pump metering system The present invention provides a widely variable and yet precisely controlled system for metering the flow of fuel to an engine component. The present invention utilizes a plurality of solenoid activated injector valves to meter fuel into an output plenum where the ... | 11/01/2005 |
| 6948459 | Position sensing for a free piston engine A free piston engine is configured with a pair of opposed engine cylinders located on opposite sides of a fluid pumping assembly. An inner piston assembly includes a pair of inner pistons, one each operatively located in a respective one of the engine cylinders, wit... | 09/27/2005 |
| 6863045 | Combustion apparatus having improved airflow A gas combustion-powered apparatus has a first chamber, a rotatable fan in the first chamber, an ignition source in operable relationship to the first chamber to ignite a combustible gas, and a second chamber. A communication passage is located downstream of the fan... | 03/08/2005 |
| 6722322 | Internal combustion engine An internal combustion engine including at least one engine cylinder, the cylinder includes a cylinder cavity with first and second cylinder heads which are interconnected by a cylinder wall, the cylinder further includes a piston member which is slidably movement w... | 04/20/2004 |
| 6491015 | Device for creating a laminar flame front A device for creating a laminar flame front in an internal combustion-engined tool having a combustion chamber (1) with two walls (14, 18) extending parallel to each other, the device including a cage (51) located between the two walls (14, 18) and having... | 12/10/2002 |
| 6349682 | Free piston engine and self-actuated fuel injector therefor A simple propulsion engine utilizing unheated atmospheric air as the propellant, and driven by a single cycle (unicycle) engine with internal combustion cylinder and free piston is disclosed. A plain piston is slidably displaceable in an elongated cylinde... | 02/26/2002 |
| 6199519 | Free-piston engine A combustion system which can utilize high compression ratios, short burn durations, and homogeneous fuel/air mixtures in conjunction with low equivalence ratios. In particular, a free-piston, two-stroke autoignition internal combustion engine including a... | 03/13/2001 |
| 5829393 | Free-piston engine A free-piston engine comprises a combustion part (1), a hydraulic control system (2), an energy consumption system and an engine control system. The combustion part comprises a combustion cylinder with at least one combustion piston (4). The hydraulic con... | 11/03/1998 |
| 4815294 | Gas turbine with external free-piston combustor AN external-combustion gas turbine in which the fuel combustion takes place in a free-piston combustor. The gas turbine is the motor component of this type of engine and provides external power by means of its shaft. The gas turbine comprises an air compr... | 03/28/1989 |
| 4803960 | Internal combustion engine, particularly, a free-piston engine An internal combustion engine comprises a cylinder and a piston axially movable within the cylinder and formed with cylindrical projections extending axially outwardly from the piston and being of a smaller diameter than that of the piston. The piston and... | 02/14/1989 |
| 4763478 | Method and device for driving a linearly movable component, especially the movable switch contact of an electric high-voltage circuit breaker A method and device for driving a linearly movable component, wherein a pressurized fluid is generated by feeding a given volume of oxygen into a combustion space connected to a piston/cylinder configuration and feeding a given volume of fuel into the com... | 08/16/1988 |
| 4653273 | Single free-piston external combustion engine with hydraulic piston detection A free piston combustion chamber coupled to air compression and gas expansion chambers are combined with a rotary motor. The rotary motor shaft drives the air compressor, receives power from the expanding gases in the expansion chamber and provides residu... | 03/31/1987 |
| 4653274 | Method of controlling a free piston external combustion engine A free-piston combustion member comprising air compression and gas expansion chambers is combined with a rotary motor. The rotary motor shaft drives an air compressor, receives power from the gases expanding in an expansion chamber and provides residual t... | 03/31/1987 |
| 4620836 | Oil pump with oscillating piston A positive displacement machine, particularly an internal combustion engine, comprises an oscillating piston connected to a piston pump. The cylinder of the pump is connected through valves to a pressure accumulator and to a substantially pressureless tan... | 11/04/1986 |
| 4561252 | Free piston external combustion engines A free piston combustion chamber coupled to air compression and gas expansion chambers are combined with a rotary motor. The rotary motor shaft drives the air compressor, receives power from the expanding gases in the expansion chamber and provides residu... | 12/31/1985 |
| 4399654 | Power plant having a free piston combustion member A power plant including a vane type engine having fuel compression means and a gas expansion means. Air or an air-fuel mixture compressed by the vanes in the compression means is fed to a free piston combustion member where burning takes place and gases a... | 08/23/1983 |
| 4385597 | Two-stroke internal combustion engine A two-stroke combustion engine is described which has a symmetrical, floating differential piston (14), having at least two main piston portions (16, 18), each movable in a combustion chamber (28, 30) formed with exhaust ports (46), and each connected to ... | 05/31/1983 |
| 4372256 | Char burning free piston gas generator A free piston gasifier is described capable of burning porous solid char fuels alone or with oil fuels. Air is forced into the char pore spaces during the compression process of the cycle in order to achieve the rapid burning needed for reasonable gasifie... | 02/08/1983 |
| 4284038 | Reciprocating drive means Reciprocating drive means powered by a fluid such as compressed air comprising an elongate inner member with a plurality of passageways therein, an outer member slidable on the inner member and a shuttle member slidable with respect to the inner member an... | 08/18/1981 |
| 4244331 | Free piston gas generator assemblies A free piston gas generator assembly in which the scavenging efficiency of the power cylinder is increased, by interconnecting in series a plurality of three or more identical motor-compressor cylinders, by means of a piping system, into one engine assemb... | 01/13/1981 |
| 4205528 | Compression ignition controlled free piston-turbine engine A fuel injected free piston-turbine heat engine wherein a piston moves reciprocally within a cylinder to deliver gases to an impulse turbine powering a fan-scavenged two-stroke cycle operation of said piston, there being a low compression storage chamber ... | 06/03/1980 |
| 4205638 | Fluid power supply system A double acting Diesel cycle hot gas engine comprising a plurality of engine cylinders, each having a free piston unit adapted to perform work, providing a continuous flow of compressed air to an energy consumption source and to a storage tank connected t... | 06/03/1980 |
| 3932989 | Resonant gas-expansion engine with hydraulic energy conversion An illustrative system is disclosed for use as a rotary-drive engine, utilizing combustible fuel and a hydraulic system of energy conversion. An engine block defines a pair of expansion cylinders (combustion chambers) and an associated concentric pair of ... | 01/20/1976 |
