Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7246938 | Apparatus and method for measuring the heating value of gases A heating value meter for gases has an outer cylindrical mantle with an outer thermostatic heating apparatus and at least one inlet for introduction of air and at least one inlet for introduction of test or calibration gas. The outer mantle has an outer heating mant... | 07/24/2007 |
| 6977179 | Method and apparatus for measuring the heating value of a single or multi-component fuel gas A method for determining the heating value of a fuel gas or fuel gas mixture in which the chemiluminescense intensity of at least one chemical bond in a known volume of the fuel gas or mixture is measured. Based upon the results of the measurement(s), the amount of ... | 12/20/2005 |
| 6939127 | Method and device for adjusting air ratio A method for setting an air ratio of a fuel/air mixture made from a gaseous fuel and air for the operation of a burner, including the steps of: a) determining the mass current of the fuel as a first measured value, | 09/06/2005 |
| 6934643 | Ultra accurate gas injection system with vehicle transient air simulation An ultra accurate gas injection system with vehicle transient air simulation is provided. The device includes an input device, at least one mass flow device, an air flow device, a controller, such as a PC based controller, and an output device. The air flow device i... | 08/23/2005 |
| 6904873 | Dual fuel boiler A fuel-fired boiler having a supply fan for providing essentially all of its combustion air requirements and has a non-aspirating type burner section to an inlet portion of which pressure regulator apparatus is coupled, the pressure regulator apparatus having a pred... | 06/14/2005 |
| 6623976 | Combustibility monitor and monitoring method An apparatus (1) for determining the concentration of a critical first component, such as hydrogen, of an atmosphere or environment (E), wherein the first component is capable of forming a combustible mixture with a second component, such as oxygen; the a... | 09/23/2003 |
| 6342186 | Ceramic liner for closed bomb applications Ceramic liners for use with closed bomb devices are disclosed. The closed bomb devices measure performance properties of energetic materials, such as solid propellant, explosive, and pyrotechnic formulations. The closed bomb devices include a body and a c... | 01/29/2002 |
| 5882115 | Measuring heating value of a gas using flameless combustion The heating value of a sample gas is calculated by a microcontroller (12) from the heating value of a reference gas, and from flow ratios and power levels determined as the gas is combusted by a flameless combustion process. The combustible gas is mixed w... | 03/16/1999 |
| 5820260 | Measuring heating value using predetermined volumes in non-catialytic combustion The heating value of a sample gas is calculated by a microcontroller (12) from the heating value of a reference gas, and from an oxidation energy ratio determined as the gas is combusted by a flameless combustion process. The combustible gas is mixed with... | 10/13/1998 |
| 5816705 | Measuring heating value of a gas using flameless combustion The heating value of a sample gas is calculated by a microcontroller (12) from the heating value of a reference gas, and from flow ratios and power levels determined as the gas is combusted by a flameless combustion process. The combustible gas is mixed w... | 10/06/1998 |
| 5807749 | Method for determining the calorific value of a gas and/or the Wobbe index of a natural gas A method and apparatus for determining the calorific value of a combustible gas including passing an amount of gas through a hydrocarbon detection device comprising interconnected first and second measuring cells, the first measuring cell including a cata... | 09/15/1998 |
| 5494826 | Microcalorimeter sensor for the measurement of heat content of natural gas A microcalorimeter includes instrumentation for reducing measurement errors due to system fluctuations. One or more sensors is utilized to detect heat content of a sample gas, and create a composition independent system. Instrumentation for automatically ... | 02/27/1996 |
| 5482679 | Device for determining the Wobbe index of a gas mixture Device for determining the Wobbe index of a first gas mixture, including a Wobbe index meter having a mixing chamber, and a feed system for supplying a first gas mixture and an oxidation gas to the mixing chamber of the Wobbe index meter. The feed system ... | 01/09/1996 |
| 5451371 | High-sensitivity, silicon-based, microcalorimetric gas sensor A gas sensor for measuring gas constituents, particularly exhaust gas constituents for an internal combustion engine, comprising a pair of polysilicon plates, each plate supporting a pair of resistors, one serving as a heater and the other as a thermomete... | 09/19/1995 |
| 5423609 | Method and apparatus for determining the heat of combustion of a material based on the height of a diffusional flame within which the material is burned An apparatus and method are provided for determining the heat of combustion of a material. The apparatus comprises a burner capable of producing a diffusional flame; a device for conveying a sample of the material to the burner, so that the sample is burn... | 06/13/1995 |
| 5288149 | Gas calorimeter and wobbe index meter Apparatus for measuring the combustion characteristics of a gaseous fuel. Wobbe index and calorific value are measured with a fast response time by maintaining a stoichiometric mixture in a mixer supplied with the gaseous fuel at a constant pressure toget... | 02/22/1994 |
| 5226728 | Method and apparatus for measuring mass flow and energy content using a differential pressure meter A method and apparatus for monitoring in real time the mass and energy flow rate of a gas through a pipeline. The invention determines the ratio of the mass flow rate of pipeline gas flowing through a pipeline compared to the mass flow rate of sample gas ... | 07/13/1993 |
| 5224776 | Instrument and method for heating value measurement by stoichiometric combustion A method and apparatus for determining the calorific value of a first combustible gas involves mixing the first combustible gas with a second combustible gas having a known calorific value and with a combustion supporting gas and burning the resulting mix... | 07/06/1993 |
| 5201581 | Method and apparatus for measuring mass flow and energy content using a linear flow meter The present invention is a method and apparatus for monitoring in real time the mass and energy flow rate of a gas through a pipeline. The invention determines the mass flow ratio of a pipeline gas flowing through a pipeline compared to sample gas tapped ... | 04/13/1993 |
| 5100244 | Gas calorimeter and method of measuring the calorific value of fuel gases A gas calorimeter and method of measuring the calorific value of fuel gases in which a fixed volume of gas to be measured is burned in a controlled environment. The temperature increase of the air in the environment caused by the burning is used to determ... | 03/31/1992 |
| 5012432 | Microcalorimeter sensor for the measurement of heat content of natural gas The BTU content of a sample of natural gas is measured using a computer controlled microcalorimeter micro-sensor instrument employing a catalytic sensor. The instrument is portable for in field use and is able to obtain measurement accuracy of better than... | 04/30/1991 |
| 4893315 | Calorimetry system A calorimetry system for measurement of the heating value of coal having a combustor 24 and a mixing unit 30 wherein heat from combustion gases is transferred to air. The system has a gravimetric feeder 64 for providing coal at a measured mass feed rate; ... | 01/09/1990 |
| 4869597 | Calorimeter A calorimeter of the liquid flow type. The calorimeter includes a chamber in communication with a medium to be delivered to the chamber at a steady rate of flow. It also includes a heat exchanger having a liquid flowing therethrough at a steady rate of fl... | 09/26/1989 |
| 4809190 | Calorimetry system A calorimetry systems for the continuous measurement of the heating value of coal, which provides heating value data used to control coal-fired furnaces. The system has apparatus for pulverizing the coal, a gravimetric feeder for providing pulverized coal... | 02/28/1989 |
| 4720196 | Method and apparatus for measuring the heating power of combustible gases A method and apparatus for measuring the heating power of a combustible gas. The ratio of the temperature of gases entering and exiting a calorimeter is maintained substantially equal to 1, and the entering air is maintained at its water saturation limit.... | 01/19/1988 |
| 4637735 | Bench-scale material flammability test apparatus and process for measuring flammability A bench-scale apparatus for measuring the heat-release rate of pyrolysis vapors of a material sample includes an oven having a heated chamber for receiving the sample, a flue and at least one entry port, a radiometer having a radiation sensor disposed in ... | 01/20/1987 |
| 4632572 | Impurity compensation for colorific content analyzer Impurity compensation for compensating the analysis of the calorific content for fuel having an unknown amount of a known additional constituent of interest (impurity) is disclosed. In the illustrative embodiment oxygen is the impurity. In that embodiment... | 12/30/1986 |
| 4614721 | Heat recovery calorimeter A catalytic calorimeter measures the heat value of a gas and includes a chamber for receiving gas and air. A catalyst within the chamber causes the combustion of the gas and air, while a first thermocouple provides a signal indicating the temperature of t... | 09/30/1986 |
| 4565788 | Method of determining heat losses due to incomplete fuel combustion A method of determining heat losses due to incomplete fuel combustion consists in that periodic sampling of fuel combustion products is carried out. The sample is separated into two parts, one of which includes a gaseous phase, and the other, solid and ga... | 01/21/1986 |
| 4533258 | Method of determining the content of combustibles in the end products of fuel combustion and apparatus realizing said method The apparatus materializing the method of determining the content of combustibles in the products of fuel combustion incorporates an oven with an electric heater connected into the load circuit of a controllable voltage source. The oven is provided with a... | 08/06/1985 |
| 4511262 | Fuel entrained oxygen compensation for calorific content analyzer A calorific content analyzer for determining the calorific content of a combustible gas while compensating the analysis of the calorific content for fuel entrained oxygen. The gas is combusted to achieve substantially stoichiometric combustion by varying ... | 04/16/1985 |
| 4500214 | Apparatus for the continuous measurement of the heating power of a gas An apparatus for continuously measuring the heating power of a fuel gas comprises a calorimeter containing a vertical cell whose lower part accomodates a burner. The burner and the cell are respectively fed with fuel gas and with combustion air at a prede... | 02/19/1985 |
| 4488867 | Method for controlling the heat load of a plant fed with natural gas of variable calorific value and density A method and apparatus for controlling the heat load in a plant fed with natural gas of variable calorific value and density consisting of withdrawing a portion of gas from the feed line, burning it in a special combustion chamber, withdrawing the combust... | 12/18/1984 |
| 4481168 | Device for determining heat losses due to incomplete fuel combustion A method of determining heat losses due to incomplete fuel combustion consists in that periodic sampling of fuel combustion products is carried out. The sample is separated into two parts, one of which includes a gaseous phase, and the other, a solid and ... | 11/06/1984 |
| 4415278 | Method for operating a gas analyzing system and apparatus utilizing the same A method and apparatus for a gas analyzing system uses a rotary valve for mixing fuel gas to be analyzed for calorific content and air. The speed of the rotary valve which determines the air-fuel ratio is controlled by a controller sensing combustion prod... | 11/15/1983 |
| 4396299 | Method and apparatus for determining total energy flow in a gas line Disclosed are methods and apparatus for measuring and determining the total energy flow, that is, BTUs per minute, of combustible gas flowing through a line such as a pipeline. One method includes taking a continuous sample of the gas flowing through the ... | 08/02/1983 |
| 4386858 | Method and apparatus for determining the heat content of gaseous fuels An apparatus and method for determining the heating value of gaseous fuels is disclosed which include the novel means for establishing a mixture of air and the gaseous fuel of interest in known volumetric proportions. An electrochemical sensor is provided... | 06/07/1983 |
| 4382698 | Combustible gas analyzer A combustible gas analyzer for determining the Wobbe Index of a combustible gas uses a constant pressure combustible gas supply and constant flow rate air supply to provide oxygen and gas for combustion. The air is supplied directly to be mixed with the c... | 05/10/1983 |
| 4380400 | Combustible gas analyzer A combustible gas analyzer for determining the calorific content of a combustible gas uses a constant flow rate air supply and a constant pressure combustible gas supply to provide oxygen and gas for combustion. The regulated air is supplied directly to b... | 04/19/1983 |
| 4359284 | Method and apparatus for determining the Wobbe index of gaseous fuels A method and apparatus for determining the Wobbe Index of gaseous fuels is disclosed in which a mixture of sample fuel, the flow of which is monitored by pressure differential across a flowmeter, and a substantially constant amount of air is burned in the... | 11/16/1982 |
