Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 6691685 | Air induction system having inlet valve The air induction system (10) includes a supercharger (12) and a valve assembly. The valve assembly comprises a valve (14) and a valve control mechanism (16). The supercharger (12) receives air through a supply opening (18) and pressurizes it. The valve (... | 02/17/2004 |
| 5836282 | Method of reducing pollution emissions in a two-stroke sliding vane internal combustion engine A method for reducing the exhaust pollution emissions in a two-stroke sliding vane internal combustion engine. First, fresh air is inducted into a vane cell, and fuel is injected into the cell at an ultra-lean fuel-air equivalence ratio less than about 0.... | 11/17/1998 |
| 5524586 | Method of reducing emissions in a sliding vane internal combustion engine A method for reducing the exhaust pollution emissions in a sliding vane internal combustion engine. First, an ultra-lean fuel-air combination is thoroughly premixed, the fuel-air combination having an equivalence ratio less than about 0.60 and a dimension... | 06/11/1996 |
| 5094204 | Stratified charge injection for gas-fueled rotary engines A gaseous fuel injector injects fuel directly into a working chamber of a rotary combustion engine after the end of the air intake stroke and early during the compression stroke for providing fuel-charge stratification within the working chamber as the ro... | 03/10/1992 |
| 4889091 | Rotary valve for natural gas rotary engine A rotary internal combustion engine includes a fuel intake port located in the periphery of the rotor housing near the air inlet end of the major axis of the two-lobed profile defined thereby. A rotary valve controls communication between the fuel intake ... | 12/26/1989 |
| 4788942 | Internal combustion engine using dynamic resonating air chamber An internal combustion engine includes a moving piston within a combustion chamber that is temporarily divided into two zones when the piston is at and near its minumum volume position. Fuel is confined to a first zone where the fuel is ignited to generat... | 12/06/1988 |
| 4259932 | Internal combustion engine control system An apparatus and method for improving the combustion process of an internal combustion engine is disclosed. A prechamber containing a combustible mixture is designed to generate a torch emanating therefrom upon ignition; the torch is controlled to extend ... | 04/07/1981 |
| 4167173 | Rotary internal combustion engine A rotary internal combustion engine includes a housing having trochoidal inner periphery, a substantially triangular rotor having three arch-like peripheral faces and rotatably mounted within the housing, a recess of substantially spoon-like shape provide... | 09/11/1979 |
| 4153026 | Carburetor for stratified charge combustion engine Construction of a carburetor used in a stratified charge combustion engine, wherein: flow division control means are dispensed with; and a main and an auxiliary discharge valves are made to have the flow division control functions by themselves, that is, ... | 05/08/1979 |
| 4108123 | Carburetor A carburetor for use with a stratified charge rotary piston engine including a first supply system having a main fuel supply system and a slow/idle fuel supply system and adapted to supply a fuel-air mixture and a second supply system adapted to supply on... | 08/22/1978 |
| 4108137 | Rotary piston engines Rotary piston engines in which the rotor housing is formed with a peripheral intake port of relatively small area and at least one of the side housings is formed with a side intake port, and the side intake port is used only in high load engine operation.... | 08/22/1978 |
| 4103666 | Fuel supply means for rotary piston engines Rotary piston engine having a first intake port formed in rotor housing and one or more second intake ports formed either one or both of the rotor and side housings. The first intake port supplies relatively rich air-fuel mixture having mixing ratio of 2 ... | 08/01/1978 |
| 4096828 | Rotary piston internal combustion engine A rotary piston internal combustion engine of the Wankel type for reducing unburned detrimental components such as NOx, HC, CO, etc. in exhaust gas without decrease of engine performance which comprises a first combustion chamber communicating by means of... | 06/27/1978 |
| 4083329 | Rotary engine with a pilot fuel nozzle downstream of top center A rotary engine having a pair of fuel injection nozzles disposed adjacent to and on opposite sides of a lobe junction of the rotor housing in the combustion region and a spark plug is disposed adjacent to the fuel nozzle which is disposed on the downstrea... | 04/11/1978 |
| 4082065 | Rotary internal combustion engine In a rotary engine of the "Wankel" type, an additional valve is provided for the controlled ingress of atmospheric air into the combustion chamber, permitting the engine to run at full design compression at all speeds and throttle openings, particularly i... | 04/04/1978 |
| 4063535 | Rotary piston internal combustion engine A rotary piston engine having fuel-air inlets controlled by the piston and which supply a stratified charge to the inlet chamber of the engine. The inlets comprise first inlets which are opened first and which supply a lean mixture along the sides of the ... | 12/20/1977 |
| 4060058 | Internal combustion engine control system An apparatus and method for improving the combustion process of an internal combustion engine is disclosed. A prechamber containing a combustible mixture is designed to generate a torch eminating thereform upon ignition; the torch is controlled to extend ... | 11/29/1977 |
| 4036183 | Rotary piston engine A rotary piston engine comprises a housing having a trochoidal peripheral wall and side walls on both sides thereof, a rotor adapted to perform a planetary rotary motion along the inner surface of the peripheral wall, and intake and exhaust ports formed i... | 07/19/1977 |
| 4034724 | Stratified charging of internal combustion engines Method and apparatus for providing a stratified charge of air and a fuel-rich, fuel-air mixture to each combustion chamber of an internal combustion engine having more than one combustion section by providing alternate sources of intake air at the intake ... | 07/12/1977 |
| 4029058 | Stratified charge rotary engine with side housing fuel injection A stratified charge rotary combustion engine having at least two fuel nozzles for discharging fuel into each working chamber after the charge therein has been substantially compressed, the fuel discharging from one nozzle being ignited as it discharges in... | 06/14/1977 |
| 4023535 | Rotary piston internal combustion engine with a stratified charge intake port system A rotary piston internal combustion engine of the type comprising a housing having two lobes and a three sided piston rotatable in planetary fashion within the housing, in which a rich air-fuel mixture and a lean air-fuel mixture separately enter into the... | 05/17/1977 |
| 4023534 | Rotary piston internal combustion engine with a stratified charge intake port system A rotary piston internal combustion engine of the type comprising a housing having two lobes and a three sided piston rotatable in planetary fashion within the housing, in which a rich air-fuel mixture and a lean air-fuel mixture separately enter into the... | 05/17/1977 |
| 4020799 | Rotary piston internal combustion engine with a stratified charge intake port system A rotary piston internal combustion engine of the type comprising a housing having two lobes and a three sided piston rotatable in planetary fashion within the housing, in which a rich air-fuel mixture and a lean air-fuel mixture separately enter into the... | 05/03/1977 |
| 4020800 | Rotary piston internal combustion engine with a stratified charge intake port system A rotary piston internal combustion engine of the type comprising a housing having two lobes and a three sided piston rotatable in planetary fashion within the housing, in which a rich air-fuel mixture and a lean air-fuel mixture separately enter into the... | 05/03/1977 |
| 4019469 | Intake means for rotary piston engines Rotary piston engine has an intake port formed in one of the side housings, said intake port being connected with an intake passage which has a curved portion merging to the intake port. The radius of curvature of the curved portion is varied in widthwise... | 04/26/1977 |
| 4003347 | Rotary piston engine An improvement in the suction mechanism of a rotary engine is provided in that two peripheral ports each with a rotary valve are formed in the peripheral wall of the rotor housing having a trochoidal inner peripheral surface and that during the first half... | 01/18/1977 |
| 4003346 | Rotary piston internal combustion engine A rotary engine having a housing defining an internal rotor chamber between a trochoidally shaped peripheral wall and a pair of side walls is provided with a peripheral port through which a rich air-fuel mixture is supplied, and a side port, through which... | 01/18/1977 |
| 3990405 | Rotary internal combustion engine An orbital rotary piston-type internal combustion engine in which a series of pistons are mounted for co-operation on a pair of rotors which are carried on a drive shaft and travel in an annular combustion chamber, with associated pre-combustion chambers ... | 11/09/1976 |
| 3987760 | Rotary piston type engine In a rotary piston type engine including casing which comprises a rotor housing having a trochoidal inner periphery and a pair of side housings secured to the opposite sides of the rotor housing, and a substantially triangular rotor rotatably disposed in ... | 10/26/1976 |
| 3964446 | Rotary piston internal combustion engine The inner peripheral wall of a rotary engine housing is provided with first and second port means which open into a combustion chamber of the engine as the apex seals of the rotor pass the port means in timed relationship. The first port means introduce a... | 06/22/1976 |
| 3941098 | Rotary engine with fuel supply through rotor A rotary combustion engine designed for operation as a stratified charge engine in which a relatively lean fuel-air mixture is supplied to each engine working chamber through the main air intake port and in which just prior to combustion in each engine wo... | 03/02/1976 |
| 3930469 | Carbureted prechamber rotary combustion engine A rotary combustion engine arrangement having a prechamber rotary engine section in which a rich air-fuel mixture is spark ignited with the hot combustion gases thereof directed into a lean air-fuel mixture for ignition thereof in a main chamber rotary en... | 01/06/1976 |
