Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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 |
| 7341041 | Toroidal engine with variable displacement volume A novel rotary engine of the kind having a toroidal cylinder and a set of pistons on a rotating circular piston assembly provides instantaneous adjustment of the displacement volume of the engine by varying the intake and expansion stroke length on the circular path... | 03/11/2008 |
| 7328672 | Radial impulse engine, pump, and compressor systems, and associated methods of operation Radial impulse engine, pump, and compressor systems are disclosed herein. In one embodiment of the invention, an engine includes a first end wall portion spaced apart from a second end wall portion to at least partially define a combustion chamber therebetween. In t... | 02/12/2008 |
| 7325517 | Radial impulse engine, pump, and compressor systems, and associated methods of operation Radial impulse engine, pump, and compressor systems are disclosed herein. In one embodiment of the invention, an engine includes a first end wall portion spaced apart from a second end wall portion to at least partially define a combustion chamber therebetween. In t... | 02/05/2008 |
| 7059294 | Orbital engine An engine is disclosed including at least one piston which is positioned within a toroidal piston chamber. A method of operating an engine is disclosed wherein a piston is advanced in a toroidal piston chamber past a first valve and the first valve is closed to form... | 06/13/2006 |
| 7011731 | Long nip press belt made from thermoplastic resin-impregnated fibers Provided is a method for manufacturing a papermaking belt structure using tapes made of a solid thermoplastic resin surrounding a fibrous matrix. The method calls for applying a layer of CD oriented tapes to a mandrel surface, then applying a layer of MD oriented ta... | 03/14/2006 |
| 6564172 | Method and apparatus for onboard locomotive fuel usage indicator A method for determining the ideal fuel usage value of a locomotive or other off-highway vehicle is disclosed. The time spent in each of a plurality of operating modes is determined and applied to an algorithm for calculating the ideal fuel usage associat... | 05/13/2003 |
| 6546908 | Variable geometry toroidal engine A novel rotary engine has a single toroidal cylinder and a set of pistons on a rotating circular piston assembly. A rotating disk valve perpendicular to the toroid has a cutout position which periodically traverses the chamber to allow passage of a piston... | 04/15/2003 |
| 5568796 | Rotary compressor and engine machine system A rotary device employs an outer housing having an interior surface with a central axis associated therewith, an outer hub assembly, disposed inside said outer housing, having a central axis associated therewith located at a distance from the central axis... | 10/29/1996 |
| 4681073 | Fuel injection control valve A stratified charge rotary combustion includes separate pilot and main fuel injector nozzles, a fuel tank and an engine driven injector pump. A fuel supply valve includes a shuttle member which moves in response to pressure from the pump to transfer a pil... | 07/21/1987 |
| 4572122 | Method of controlling internal combustion engine A method of controlling an internal combustion engine in which the pressure in a cylinder or working chamber of the engine is detected by reading the output signal which is delivered from a pressure sensor when a predetermined time has elapsed from a poin... | 02/25/1986 |
| 4389173 | Arcuate piston rotary engine A rotary engine is provided utilizing a non-cylindrical casing which defines lobes on opposite sides which define crescent-shaped intake and combustion chambers, respectively, these chambers being connected by a narrow corridor on both sides of a central ... | 06/21/1983 |
| 4169452 | Fuel injection rotary piston internal combustion engine of the trochoidal type The invention relates to a fuel injection rotary piston internal combustion engine of the trochoidal type with a housing made up of a peripheral portion and two side walls and with a first injection nozzle in the peripheral portion and a second injection ... | 10/02/1979 |
| 4137891 | Orbiting piston rotary engine A rotary shaft carries a generally cylindrical composite rotor consisting of an inner cylindrical hub surrounded by a resilient undulatory spring sleeve which in turn is surrounded by a resilient cylindrical spring sleeve. Between the rotor and the intern... | 02/06/1979 |
| 4059086 | Fuel and lubricating oil supply device A fuel and lubricating oil supply device, wherein lubricating oil for lubricating the wall surfaces of a combustion chamber of an engine is fed to the engine, together with fuel. This fuel and lubricating oil supply device comprises; a device for heating ... | 11/22/1977 |
| 4055153 | Fuel supply system for a rotary piston engine In a stratified combustion rotary piston engine of the Wankel-type wherein individual combustion chambers are charged with a fuel-air mixture by a fuel-air mixture supply system and air by an air supply system, a fuel supply system incorporated in said fu... | 10/25/1977 |
| 4055155 | Fuel supply system for a rotary piston engine A fuel supply system for a rotary piston engine of the Wankel-type, adapted to supply fuel in the injection manner by varying the amount of fuel to be injected for individual combustion chambers so that the combustion of the rich or lean fuel-air mixture ... | 10/25/1977 |
| 4055154 | Fuel supply system for a rotary piston engine In the stratified combustion rotary piston engine of the Wankel-type, wherein individual combustion chambers are charged with a relatively rich fuel-air mixture and a relatively lean fuel-air mixture or air by first and second intake systems, each system ... | 10/25/1977 |
| 4037412 | Compound spark-ignition and diesel engine A supercharged rotary combustion engine which at low operating speeds and/or power functions as a spark-ignited, Otto cycle, engine which at higher speeds and/or power functions as a diesel engine.... | 07/26/1977 |
| 4009688 | Rotary piston type engine Rotary piston type engine comprising a casing having a cavity defined by an inner peripheral wall of trochoidal configuration, a substantially triangular rotor disposed in said cavity for rotation with its apex portions in sliding contact with the inner p... | 03/01/1977 |
| 4002152 | Fuel injection control apparatus A fuel injection control apparatus has primary and secondary injection valves for effecting only the primary injection at low engine speeds while effecting both the primary and secondary injection at high speeds. Part of the switching operation between pr... | 01/11/1977 |
| 3991723 | Fuel injection system for rotary internal combustion engine The improved fuel injection system is for a rotary internal combustion engine having a housing within which a rotor is disposed for planetary rotary motion and which defines with the housing a plurality of combustion chambers. The improved fuel injection ... | 11/16/1976 |
| 3987759 | Stratified charge rotary engine with variable spray angle fuel nozzle A rotary combustion engine having a fuel nozzle for discharging fuel into each working chamber just prior to combustion and in which means are provided for increasing the width of the spray angle of the fuel discharged by said nozzle as the quantity of fu... | 10/26/1976 |
| 3980064 | Internal combustion engine Herein disclosed is a new internal combustion engine which is operable on a fuel which is combusted with the agency of an oxidizing gas containing hydrogen peroxide or oxygen gas so that exhaust gases emitted from the engine contains no nitrogen oxides in... | 09/14/1976 |
| 3977367 | Dual fuel injection nozzle A rotary combustion engine designed for operation as a stratified charge engine with two separately controllable fuel injection means combined into a single unitary fuel injection nozzle structure.... | 08/31/1976 |
| 3970051 | Rotary engine device A rotary engine device, which may be an internal combustion engine or a pump, having a spherical rotor with a radial web rotatable in an oblique chamber, and curved vanes axially slidable through the web, is provided with an outer ring fixed to the outer ... | 07/20/1976 |
| 3960115 | Stratified charge rotary engine (method of operation) A rotary combustion engine having two fuel nozzles for discharging fuel into each engine working chamber with fuel being discharged from only one of the nozzles during low power operation of the engine and being discharged from both nozzles during high po... | 06/01/1976 |
