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| Number | Title | Issue Date |
| 4364676 | Heat transfer meter The invention relates to a portable, battery-driven device for measuring heat transfer coefficients (k-values). It uses an amplifier (1), which forms the quotient between the inner temperature minus the inner wall temperature on one hand and the inner tem... | 12/21/1982 |
| 4364677 | Method and means of rapidly distnguishing a simulated diamond from natural diamond A simulated diamond such as crystalline cubic zirconia, which has optical properties very similar to natural diamond and so is difficult to distinguish optically from natural diamond, is distinguished from natural diamond by measuring its thermal conducti... | 12/21/1982 |
| 4344315 | Method and device for distinguishing material by thermal conductivity Natural diamonds can be distinguished from simulated diamonds in seconds by merely touching a hand held probe to the gems. The tip of the probe includes a rounded gem contacting head of high thermal conductivity and low thermal mass. The head is preferabl... | 08/17/1982 |
| 4332157 | Pyroelectric anemometer Disclosed is a pyroelectric anemometer capable of providing an accurate indication of fluid flow rate. A pyroelectric substrate has a heater element located essentially transverse to the fluid flow direction. Sensor electrodes also transverse to the fluid... | 06/01/1982 |
| 4283935 | Device for measuring thermal conductivity of liquid A device for measuring thermal conductivity of a desired sample liquid, even of a transparent or hot sample liquid, on the basis of thermal diffusion to the sample liquid from a small and thin metal disc which is heated by laser flash. The device has mean... | 08/18/1981 |
| 4284690 | Cylindrical tapered sleeve optimized for weight and heat conduction The disclosed invention is a device and method for optimizing the weight and/or the heat transfer (conduction) capability of a heat transfer cylindrical sleeve. The sleeve is designed to fit around a cylindrical heat source. One particular application for... | 08/18/1981 |
| 4255962 | Method and means of rapidly distinguishing a simulated diamond from natural diamond A simulated diamond such as crystalline cubic zirconia, which has optical properties very similar to natural diamond and so is difficult to distinguish optically from natural diamond, is distinguished from natural diamond by measuring its thermal conducti... | 03/17/1981 |
| 4236403 | Means and techniques useful in establishing R values in insulation The R value of heat insulation already in situ in a wall of a building structure which has already been subjected to climatic hot and cold conditions is established under transient conditions that exist over a 24 hour period by establishing a first series... | 12/02/1980 |
| 4232543 | Device for measuring thermal conductivity of liquids An apparatus for measuring thermal conductivity of a desired sample liquid, even of a transparent sample liquid, on the basis of thermal diffusion to the sample liquid from a small and thin metal disc which is heated by laser flash. The sample liquid is i... | 11/11/1980 |
| 4220039 | Fluid temperature compensator circuit for a thermal gauge probe A circuit including an amplifier and resistance thermal device is interposed in and supplements the heat dissipation measuring circuit of a fluid thermal gauge probe for detecting the actual temperature of a fluid medium under test in a closed system and ... | 09/02/1980 |
| 4155244 | Apparatus for determining thermal conductivity of materials A method and apparatus for measuring thermal conductivity of materials is provided. A test specimen is placed intermediate a hot plate and a cold plate, and a heat flow sensing means is placed intermediate the material to form two portions of the test spe... | 05/22/1979 |
| 4126033 | Determination of thermal conductances of bonding layers in infrared photoconductor arrays A method for determining in situ the thermal conductances of bonding layers of detectors in infrared detector arrays for quality selection of preferred detector arrays. Each detector of the array is heated successively by laser pulses of variable pulse wi... | 11/21/1978 |
| 4080821 | Electric circuits An electric circuit includes three matched resistance thermometer sensors and is responsive to changes in rate of heat loss from at least one of them. The sensors are connected in a series-parallel arrangement to form one arm of a bridge circuit. An ampli... | 03/28/1978 |
| 4059982 | Apparatus for the measurement of thermal properties of biomaterials Appropriate heating and temperature sensing means are immersed in a medium the thermal conductivity, k, and thermal diffusivity, , of which are to be determined both in the presence of and in the absence of a flow of fluid therethrough. The method ... | 11/29/1977 |
| 3987660 | Method of determining thermal conductivity of fiber insulation A method is disclosed for the determination of the thermal conductivity of low density matted inorganic fiber insulating bodies by transmission of visible light through such bodies. The method is particularly applicable to fiber glass bodies. Densities mu... | 10/26/1976 |
| 3971246 | Method and apparatus for measuring the coefficient of thermal conductivity of a sample The coefficient of thermal conductivity of any sample can be measured without any pre-processing to the sample by putting an electric heater and a thermo-electric couple between a block made of reference material whose coefficient of thermal conductivity ... | 07/27/1976 |
| 3938383 | Method and apparatus for detecting the thermal characteristics of a subsurface formation in situ A method and apparatus for detecting the thermal characteristics of a subsurface formation in situ wherein a borehole has been drilled from the earth's surface, including inserting a known volume of cryogenic material into the borehole to a predetermined ... | 02/17/1976 |
