Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 5949153 | Multi-engine controller A controller and method for controlling two or more electrical generators to meet the applied load, varies the activation/deactivation sequence of the generators according to and instruction set selected by time or day or other discrete event. The control... | 09/07/1999 |
| 5915310 | Apparatus and method for NOx reduction by selective injection of natural gas jets in flue gas A method of reducing NOx determines an NOx concentration profile within a zone of the furnace which is at a temperature below 2600° F. A stream of fluid fuel is injected into at least one region of relatively high NOx con... | 06/29/1999 |
| 5630328 | Natural gas conditioning facility A facility for conditioning compressed natural gas to be dispensed to vehicle fuel tanks is provided that includes a fuel storage system, a chilling apparatus, and a fuel dispensing system. The chilling apparatus includes a refrigeration system and a liqu... | 05/20/1997 |
| 5549096 | Load control of a spare ignited engine without throttling and method of operation A spark ignited engine and method of its operation in which throttling losses are substantially eliminated has two intake manifolds operating at different charge air density levels. Suitable valves, upstream of conventional cylinder intake valves, are con... | 08/27/1996 |
| 5507146 | Method and apparatus for condensing fugitive methane vapors Fugitive methane or natural gas vapors are recovered from a handling or delivery system and are blown through solid methane chips or a slush of solid and liquid methane. The solid methane melts and cools the vapors below the vaporization temperature to co... | 04/16/1996 |
| 5495829 | Water heater with thermoelectric module and through-chamber heat sink A self-powered forced or induced draft water heater is provided including a tank adapted for storing hot water, a sealed combustion chamber, a powered burner, a thermoelectric module, and a through-chamber heat sink having a base portion and a pin portion... | 03/05/1996 |
| 5479966 | Quick fill fuel charge process A method and apparatus for fast filling a vehicle fuel tank with high pressure natural gas comprising the steps of coupling a fill line to the vehicle tank, introducing high pressure natural gas into the line and the tank, measuring the pressure in the li... | 01/02/1996 |
| 5390646 | Second stage intercooling with phase change heat transfer fluid An air-fuel supply system for an internal combustion engine in which fuel, such as natural gas, is stored in a fuel tank as a cryogenic liquid, and in which supply air is compressed. The charge air is intercooled to increase its density and, therefore, en... | 02/21/1995 |
| 5366153 | Heat pump system with refrigerant isolation and heat storage A heat pump system in which a vapor compression refrigerant is isolated from the space being conditioned, heat pumped by the refrigeration circuit is stored and a heat transfer fluid circuit is controlled for conditioning the space and for conducting heat... | 11/22/1994 |
| 5320166 | Heat pump system with refrigerant isolation and heat storage A heat pump system in which a vapor compression refrigerant is isolated from the space being conditioned, heat pumped by the refrigeration circuit is stored and a heat transfer fluid circuit is controlled for conditioning the space and for conducting heat... | 06/14/1994 |
| 5276254 | Process to stabilize scrubber sludge A process for stabilizing sludge containing flyash and calcium sulfate formed by a lime or limestone scrubber increases the sludge particles to a size at which leaching of toxic metals from the particles no longer occurs at toxic levels. The sludge is dew... | 01/04/1994 |
| 5253805 | Heat pump system with refrigerant isolation A heat pump system for a residence or other occupied space utilizing a fuel-fired prime mover or heat engine to operate a refrigerant vapor compressor. With both the engine and compressor situated outdoors, heat is transferred between the building interio... | 10/19/1993 |
| 5241915 | Apparatus and method to improve pulverizer and reduce NOx emissions in coal-fired boilers An apparatus and method to improve pulverizer operation and reduce nitrogen oxide emissions from furnaces which burn pulverized coal from at least one pulverizer. A duct type burner burns a fuel in the primary air which heats the primary air supplied to t... | 09/07/1993 |
| 5226594 | Hot water storage tank heat exchanger system A heat storage system for a fuel fired prime mover driven space conditioner. Rejected heat from the prime mover is advantageously stored in a storage type potable hot water heater. Heat is transferred from a coolant fluid for the prime mover by forcibly c... | 07/13/1993 |
| 5216876 | Method for reducing nitrogen oxide emissions from gas turbines A combustible fuel containing 3% to 45% of the fuel needed to operate a gas turbine is introduced into the compressor air stream for the gas turbine. The mixed fuel and air stream is introduced to the gas turbine prior to the combustor stage through a pip... | 06/08/1993 |
| 5207164 | Process to limit the production of flyash by dry bottom boilers In a process to limit the production of flyash by dry bottom boilers, flyash is collected from flue gas using a collector such as an electrostatic precipitator. The collected flyash is carried in a carrier gas stream to which a fuel is added. The stream i... | 05/04/1993 |
| 5192022 | Fuel-fired heat pump system A heat pump system for an occupied space of a building comprising a fuel-fired heat engine and a heat pump compressor driven by the heat engine, the mechanical horsepower output capacity of the engine being substantially equal to the input power requireme... | 03/09/1993 |
| 5181475 | Apparatus and process for control of nitric oxide emissions from combustion devices using vortex rings and the like An apparatus and method for reducing nitrogen oxide emissions from the products of combustion is provided in which a vortex generator introduces natural gas, or other fluid fuel into the upper portion of a combustion device. The fuel introduced forms vort... | 01/26/1993 |
| 5141726 | Process for reducng Nox emissions from combustion devices Nitrogen oxide and dioxide content of flue gas from combustion devices is reduced by mixing combustion air and a gas or volatilized fuel in proportions below the lower combustible limit of the mixture and utilizing that mixture for at least a part of the ... | 08/25/1992 |
| 5081977 | Low pollution natural gas vehicle A method and apparatus for reducing emissions from an internal combustion engine used for propelling a heavy land vehicle, for example, comprising a fuel supply tank for storing liquified natural gas and a fuel circuit for cooling compressed charge air to... | 01/21/1992 |
| 5078064 | Apparatus and method of lowering NOx emissions using diffusion processes An apparatus and method for reducing nitrogen oxide emissions from furnace flue gas is provided in which natural gas or other fluid fuel which has little or no fixed nitrogen is introduced into the upper portion of the furnace. The fuel diffuses by lamina... | 01/07/1992 |
| 5044286 | Process to eliminate production of fly ash by wet bottom boilers A method of recycling fly ash as slag in a wet bottom furnace is described. The furnace may have a cyclone furnace, a pulverized coal furnace, or any other type of furnace producing wet slag. All or part of the collected fly ash is collected and returned ... | 09/03/1991 |
| 5042404 | Method of retaining sulfur in ash during coal combustion An improved method for burning carbonaceous material containing sulfur to reduce emissions of SO2 is disclosed wherein the carbonaceous material is projected into a furnace as one or more streams and each stream is continuously ignited with a v... | 08/27/1991 |
| 4976464 | Fuel-fired heat pump system A heating system that reduces the cycling losses of a heat engine driven heat pump by storing rejected heat from the engine and using this rejected heat to meet a heating demand between periods of operation of the engine and heat pump so that over an exte... | 12/11/1990 |
| 4960059 | Low NOx burner operations with natural gas cofiring A method is disclosed which overcomes the problems which tend to occur in the retrofitting of coal burners for low-NOx emission. A gaseous or volatile liquid fuel is introduced into the primary or secondary air with the amount ranging from 2% to 25% of th... | 10/02/1990 |
| 4910414 | Bottoming cycle A system for air conditioning and generating electrical power including a fuel-fired internal combustion engine, an electrical motor/generator, and a vapor compressor/expander all interconnected. The vapor compressor/expander driven by the engine operates... | 03/20/1990 |
| 4850862 | Porous body combustor/regenerator A high efficiency, high temperature radiant heating system utilizing regeneratively coupled combustors. The combustor/regenerator units each comprise a porous body with combustion supported in one layered zone and regeneration occurring in an adjacent lay... | 07/25/1989 |
| 4831830 | Fuel-fired chilling system A chiller system for satisfying a cyclical cooling load including a fuel-fired prime mover and compressor set and a cold storage bank. The prime mover compressor set is sized for efficient, substantially continuous operation from cycle to cycle and the co... | 05/23/1989 |
| 4312188 | Heat pump system An air heating and cooling system for a building includes an expansion-type refrigeration circuit and a heat engine. The refrigeration circuit includes two heat exchangers, one of which is communicated with a source of indoor air from the building and the... | 01/26/1982 |
| 4116611 | Gaseous and liquid fuel burner A improved burner for metallurgical furnaces capable of utilizing gaseous or liquid fuels and air, enriched air or oxygen as an oxidant and adapted to accommodate rich fuel/oxidant mixtures is disclosed. The burner is capable of producing high temperature... | 09/26/1978 |
| 4111687 | Process for the production of intermediate hot metal A process and apparatus for the production of intermediate hot metal suitable for further refining into steel is disclosed. The basic process includes the steps of heating a charge of ore in a reducing furnace having a reducing atmosphere therein comprising a ... | 09/05/1978 |
| 4003691 | Recirculating burner A burner for burning a vaporizable liquid fuel comprising a cylindrical combustion chamber, the combustion chamber having an inlet and an outlet, a cylindrical vaporizing chamber, the vaporizing chamber having an inlet and an outlet, a first passage inter... | 01/18/1977 |
| 3994665 | Recirculating burner A recirculating burner for burning a vaporizable liquid fuel comprising a housing, a combustion chamber in the housing, with inlet and outlet, a vaporizing chamber, with inlet and outlet, an air inlet for directing air under pressure into the combustion c... | 11/30/1976 |
| 3990831 | Recirculating burner A burner for burning a vaporizable liquid fuel, comprising a suction chamber, a combustion chamber, an air inlet to the suction chamber, a vaporizing chamber, a first passage interconnecting the combustion chamber with the vaporizing chamber, a second pas... | 11/09/1976 |
