Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 4498861 | Method for controlling combustion in industrial furnaces A method for controlling combustion of atomized fuel in industrial furnaces, in which flame radiation and temperature distributions in a furnace are controlled into optimum conditions in terms of heat efficiency by adjusting a feed rate of an atomizing me... | 02/12/1985 |
| 4493635 | Oxygen-enriched air ratio control device for combustion apparatus A control device controls the air ratio in a combustion apparatus constructed so that combustion fuel supplied via a combustion fuel supplying pipe is burned with oxygen-enriched air obtained by drawing air through an oxygen permeable selective membrane b... | 01/15/1985 |
| 4486166 | Jackshaft controlled boiler combustion control system An improved combustion control system for a jackshaft controlled boiler or the like utilizes a second power actuator, a linkage biasing mechanism and a function generator which provides a position control signal as a function of the boiler load in order t... | 12/04/1984 |
| 4479774 | Combustion control system The well-known "jackshaft" positioning or two-point parallel combustion control system has been modified to include a linkage strut length adjustor apparatus with a remote actuator apparatus. The adjustor apparatus includes an overload protection system t... | 10/30/1984 |
| 4465456 | Variable firing rate burner A variable firing rate burner with a throttle valve assembly that regulates fuel and air intake while maintaining a substantially constant fuel/air ratio over a wide fuel/air flow rate range. The throttle valve assembly includes a pivotally mounted thrott... | 08/14/1984 |
| 4421473 | Apparatus for operating a burner at an optimal level A system for marginally adjusting the fuel flow to a burner to maintain the proper oxygen content in the exhaust from the burner is disclosed. The burner is of the type where both the fuel and air flow rates are adjusted in a substantially fixed ratio in ... | 12/20/1983 |
| 4408569 | Control of a furnace The efficiency of a furnace is substantially maximized by manipulating the amount of oxygen supplied to the combustion process in the furnace so as to provide a desired oxygen concentration in the flue gas which will result in substantially maximum furnac... | 10/11/1983 |
| 4406611 | Method for operating a gasification burner/heating boiler installation The invention relates to a method for operating a gasification (or vaporizing) burner/heating boiler installation and has the objective to develop such an installation in such a manner that it can be operated controllably. According to the invention, the ... | 09/27/1983 |
| 4396371 | Device for controlling the air supply to a gas burner A burner having an air intake at atmospheric pressure, a gas (fuel) supply line and a combustion chamber in which gas from the latter line burns in the presence of atmospheric air drawn in from the intake, is provided with a swingable or rotatable flap-ty... | 08/02/1983 |
| 4375950 | Automatic combustion control method and apparatus A method of automatic combustion control in a combustion system comprising a combustion chamber, combustion means for causing the combustion of fuel in the chamber, a heat exchanger connecting with the combustion chamber, an exhaust passage connected with... | 03/08/1983 |
| 4364724 | Method and apparatus for dosing an air-fuel mixture in burners having evaporating tubes A method and an apparatus for dosing the air-fuel mixture in burners of the type which is formed with an evaporator tube (9) through which fuel and some amount of combustion air is introduced in the combustion chamber (1) and in said combustion chamber is... | 12/21/1982 |
| 4363440 | Combustion control system A method and apparatus for controlling combustion in a process heater provides for efficient control of the combustion with a minimum of components. The apparatus includes means for generating a signal from a condition of a process such as temperature, or... | 12/14/1982 |
| 4340355 | Furnace control using induced draft blower, exhaust gas flow rate sensing and density compensation An induced draft combustion apparatus and its associated control system has a blower located in the exhaust stack or vent which is used to induce the movement of air and combustion products into, through and out of the combustion chamber. A flow-restricti... | 07/20/1982 |
| 4334855 | Furnace control using induced draft blower and exhaust gas differential pressure sensing A heating system of the type having a combustion chamber with a fuel burner, an inlet for combustion air and an exhaust stack is improved by adding a variable-speed induced draft blower, a flow-restricting stack orifice and a fuel valve sensitive to the e... | 06/15/1982 |
| 4329137 | Device for choke adjustment The invention has for its object to provide a control unit for the air choke in an oil burning installation which affords good fuel economy and is simple in construction, while being at the same time easy to mount and adjust. The control unit is composed ... | 05/11/1982 |
| 4278052 | Boiler control system A boiler control system for boilers fired by solid fuels wherein the fuels are carried through the combustion zone of the boiler on a traveling grate and wherein the air flow for combustion as supplied to the undergrate region utilizes a control of the fu... | 07/14/1981 |
| 4263886 | Method and apparatus for controlling a liquid fuel space heater An electronically controlled space heater includes a ceramic block heating element fed by a metering pump with fixed volume charges of liquid fuel at a rate dependent on temperature requirements. The heating element is located within a combustion chamber.... | 04/28/1981 |
| 4264297 | Control system for combustion apparatus Apparatus and method for changing the calibrated linkage relationship between two flow control devices of combustion apparatus without impeding the normal operation of the associated process. Means are provided, responsive to remote, manual or automatic c... | 04/28/1981 |
| 4261508 | Combustion control system A method and apparatus for controlling combustion in a process heater provides for efficient control of the combustion with a minimum of components. The apparatus includes means for generating a signal from a condition of a process, such as temperature, o... | 04/14/1981 |
| 4251025 | Furnace control using induced draft blower and exhaust stack flow rate sensing Apparatus is provided for constructing an induced draft furnace and its control system, to produce an induced draft furnace having increased efficiency. A blower located in the furnace exhaust stack is used to induce movement of air, fuel and combustion p... | 02/17/1981 |
| 4237825 | Furnace heat absorption control Furnace performance is controlled during start-up or very low load operation at a time when the minimum air flow required to be supplied to the furnace is significantly greater than that required to burn the fuel being supplied to the furnace. Decreased f... | 12/09/1980 |
| 4181099 | Coordinated control for power plant forced and induced draft fans during startup and fan speed changes In a power plant, a solid state sequence is provided for starting an FD or ID fan, or for changing the fan speed in response to the position of the fan inlet vanes. The sequential process is self-calibrated since process events control the stepping operat... | 01/01/1980 |
| 4174951 | Furnace heating system A system for heating a furnace having a heating chamber defined by furnace walls is provided with a plurality of individual burner assemblies mounted on a furnace wall to direct heating gas streams into the heating chamber, each of the burner assemblies i... | 11/20/1979 |
| 4108594 | Method for fuel/air feed pressure control by stack temperature This metal heating method includes burning an air-gas fuel mixture as it flows into a furnace, flowing hot exhaust gases out of the furnace to an exhaust stack after it has impinged on or been brought into association with the metal in the furnace for hea... | 08/22/1978 |
| 4097219 | Settable regulator device for gas/air mixture ratios A device for the setting and automatic regulation of the mixture ratio of a gas/air mixture for industrial furnaces comprises two coaxially-arranged diaphragm pressure gauges, connected in opposition, via a ratio setting mechanism, for the gas and the air... | 06/27/1978 |
| 4051231 | Production of internal atmospheres for kilns A gas mixer and reactor is provided which includes an elongated gas flow chamber with a nozzle arrangement at its inlet end for passing a first gaseous reactant into the interior of the chamber, toward the outlet of the chamber from points uniformly about... | 09/27/1977 |
| 4033505 | Cyclonic, multiple vortex type fuel burner with air/fuel ratio control system A cyclonic, multiple vortex type fuel burner having a combustion chamber with a closed curved end, with the main fuel and auxiliary fuel and air being tangentially injected into the chamber adjacent to the curved end creating a circular oriented combustio... | 07/05/1977 |
| 3964859 | Vaporizing type liquid fuel combustion apparatus A vaporizing type liquid fuel combustion keyboards is disclosed which is particularly suitable for heating individual rooms and which includes a fuel supply system capable of delivering very small volumes of fuel reliably and without the need for excessiv... | 06/22/1976 |
| 3960320 | Combustion optimizer There has been provided an improved process control optimizer for regulating at least one parameter of the process relative to optimum utilization of available energy. Temperature responsive open loop control means regulates the fuel flow and the optimize... | 06/01/1976 |
