HEAT TRANSMITTER

A die for extruding plastic film is provided wherein such die comprises a die body having an inlet therein for receiving a plastic melt under pressure and having an annulus in the die in flow communication with the inlet and having a discharge orifice for extruding the plastic melt therefrom in tubular...     

A bonding head for connecting the electrically conductive leads of a tape cable or the like to other electrical conductors. The bonding head, which applies heat and pressure to the electrical conductors and leads to bond them together, is an elongated member comprised of a material having high mechanical...     

A conductive heat transfer mechanism through which energy readily flows between two bodies or systems at different temperatures. The present mechanism is embodied in a temperature sensing network for determining and controlling the surface temperature of a xerographic fuser roll. The network includes...     

An infrared receiver having a thermal conductive device for providing continuous thermal contact between a detector cooling means and an IR detector is disclosed. The thermal conductive device is bellows shaped and constructed from laminated layers of copper, nickel and copper or other suitable materials...     

A process is provided for freeze-drying an aqueous liquid product which comprises distributing the liquid product in containers closely fitted in cavities of a tray-shaped heat-conducting solid metal block having relatively high heat transfer, subjecting the block to accelerated cooling such that the...     

A warp-resistant heat sink suitable for soldering to one side of a relatively fragile, ceramic semiconductor substrate comprises a plate of heat-conducting material having a plurality of slits along two sides thereof, and a plurality of U-shaped heat-conducting members each of which extends through a...     

A method of extruding plastic film is provided which employs a die comprising a die body having an inlet therein for receiving a plastic melt under pressure and having an annulus in the die in flow communication with the inlet and having a discharge orifice for extruding the plastic melt therefrom in...     

The heat radiator takes the form of an extruded member defining parallel fins on its bottom surface and having a flat top surface arranged to be cemented directly to the bottom surface of a transmission fluid pan in an automobile. A special cement having high thermal conductivity is used and the extruded...     

During the construction of display gas panels front and back panels are connected together by means of a seal which forms a chamber for receiving a display gas. A hole is provided in the back plate which is outside the display viewing area and a glass tube is fitted into this hole and sealed to the assembly....     

A heat sink is disclosed which consists of a permanently sealed container which contains LiClO.sub.4.3R.sub.2 O, NH.sub.4 Al(SO.sub.4).sub.2.12R.sub.2 O or (COOH).sub.2.2R.sub.2 O, where R is hydrogen or deuterium. The heat sink can be used in combination with a radiator to protect electronic circuitry...     

A food serving system for delivering prepared meals to locations remote from the point of preparation, such as to patients in hospitals and nursing homes, which includes a mobile cart having its own low voltage rechargeable power pack that may be utilized to make the cart self powered. The cart has a...     

An apparatus for rapidly testing catalyst samples wherein a vertical reactor surrounded by a heat transfer medium and containing a removable catalyst support is arranged for loading catalyst through the reactor top and for its removal through the bottom after testing. A preheater section is provided...     

A yarn heating device comprising a lower vessel containing a heat transfer liquid and a heating device passing through said vessel over its entire length and intended to vaporize the heat transfer liquid, and an upper vessel connected to the lower vessel by a plurality of vertical conduits, through which...     

A motor mounting arrangement including a ring motor support member secured to the motor. The motor support member has formed integral therewith a plurality of heat dissipating fins for conducting heat away from the motor. Also formed integral with the motor support member are a plurality of arm support...     

A ground heat exchanger adapted to be buried in the ground and to be used in association with a heat pump system for heating and cooling. The exchanger includes a heat conducting metal plate adapted to be vertically buried in the ground and carrying a fluid circulating coil adapted to be connected to...     

A portable refrigerator unit is cooled by a thermoelectric element of the Peltier type, having hot and cold faces adapted to be energized by an external DC source, which can be disconnected from the unit to make the unit entirely portable. The thermoelectric unit has a cold face in contact with an internal...     

Copper backings brazed to ceramic parts exposed to high-temperature oxidizing high-velocity gases must be secured, for mounting purposes, to water-cooled fixed support, with high thermal conductance between backing and support. Prior art practice of brazing backing to support is inconvenient, making...     

The system produces heated air at a temperature up to 230.degree. F. and comprises a box structure having one or more glass panels covering the top of the box. Separator walls divide the box into a series of air conveying ducts with the air being forced by means of a blower through the ducts in a serpentine...     

A solar energy collector has members exposed to the sun to collect heat from the sun's rays and has at least one fluid carrying conduit in heat exchange relationship with the members. Heat energy collected by the members is transferred by conduction to the fluid in the conduit for utilization. The collecting...     

A heat shielding tool is disclosed, having a pair of opposed pivotally connected handles terminating in a pair of opposed jaws. The jaws have interiorly relieved arcuate areas so that, when closed, they will form a circle so that the circular opening formed thereby can be clamped about a pipe or tube....     

A portable refrigerator unit is cooled by a thermoelectric element of the Peltier type, having hot and cold faces adapted to be energized by an external DC source, which can be disconnected from the unit to make the unit entirely portable. The thermoelectric unit has a cold face in contact with an internal...     

A travelling wave tube of the coupled cavity type including a slow wave propagating structure comprised of a linear array of transverse plates axially spaced apart to provide a sequential series of interposed cavities, each of the plates having a cavity coupling aperture radially spaced from an electron...     

A heating system for a building structure is provided in which a heat pump system and at least one solar energy system and one air convector system are used. The solar energy system collects heat during the periods when sun energy is available and the air convector system collects heat when available...     

The invention provides an elastic interface between a cooler dewar and an electronic cold finger which utilizes multitudinous conduction paths consisting of specialized bent fibers.

An improved conduction cooled module of the type having at least one chip mounted on a substrate and having a housing surrounding the chips and sealed to the substrate. The housing having cylinders therein opposite the chips for containing pistons which are resiliently urged against the chip surface....     

An assembly for transferring heat at cryogenic temperatures across an interface space between a relatively fixed refrigerated cold finger and a relatively movable Dewar vacuum flask having an infrared detector array mounted therein. The interface assembly is formed of two opposing thermal conducting...     

A device is disclosed for recovery of heat from hot shell devices, particularly from motor-compressor units such as used in air conditioners, refrigeration systems and the like and which comprises a heat exchange coil in encircling, contacting heat exchange relationship to the hot shell device with circulation...     

A thermal switch having relatively high gain for stabilizing the temperature of a heat source or a heat sink, especially useful in vacuum applications. A strip of heat conducting material is disposed to conduct heat from one heat station to another heat station. The contact made between the strip of...     

A heat-exchanger composed of a body of ceramic sponge defining randomly located interconnected walls bounding a plurality of randomly located interconnected cavities and a plurality of elongate heat-conductive members embedded in the body and having a surface in heat-exchanging relation with the body...     

A matrix of small diameter holes are located in the module housing adjacent each of the integrated circuit chips to be cooled. A pin or rod is located in each of the holes and extends therefrom into contact with the exposed surface of the chip. A spring means is located between the housing and the pin...     

The thermal conduction module for removing heat from one or more chips located therein consists of a housing made of heat conductive materials forming a cap over the chips. The housing contains one or more openings, one opposite each of the chips. More than one heat conductive element is included in...     

A passive heat exchange enhancement structure which operates by free convection includes a flat mounting portion having a plurality of integral fins bent outwardly from one side edge thereof. The mounting portion is securable around a stovepipe, to a flat surface or the like for transferring heat from...     

A gas encapsulated cooling module wherein at least one semiconductor chip to be cooled is supported on a substrate portion of the module. The provision of thin leaf shaped members each having a relatively long thin planar surface in thermal contact with a planar surface of the chip to be cooled, said...     

A thermal conducting path between a relatively movable heat source and a relatively fixed heat sink element, defined as a relatively narrow non-contacting conducting gap between opposing conducting surfaces. In an embodiment where the heat source is gimbal mounted, for movement with respect to two orthogonal...     

The invention involves to improvements in heat snk. Required numbers of corrugated fins and separator sheets are alternately stacked together with side bars applied to the opposite edges of each corrugated fin, and all the parts are brazed together. Large thickness side bars are used for either one side...     

A unidirectional heat transfer device for use between an electronic assembly on an aircraft and the skin and/or pod on the aircraft. The device includes a thermal decoupler mechanism which operates to disengage a retractable interface heat transfer surface when the skin on the aircraft reaches a predetermined...     

Disclosed is a thermal inverter arrangement and method for controlling air temperatures and currents within a building utilizing an underground plenum chamber having a plurality of transverse screens with thermal conducting poles attached thereto. Through the use of thermal differentials and an exhaust...     

A structural heat-exchange element has a structural part including a body portion of ceramic foam material and outer wall portions spaced from one another in a first direction so as to laterally outwardly bound the body portion and having a higher thermal conductivity than the latter, and conduit elements...     

A solid state temperature gradient cooling system in which thermal energy is, under a first condition, carried from a heat source to a heat storage device and under a second condition is carried from the heat source and storage device to a heat dissipator. The change in conditions is responsive to changes...     

A modular infrared heating device having an outer casing which encloses a heating chamber wherein one or more infrared lamps are vertically positioned. The heating device also includes an intake channel which communicates with an opening in the outer casing and with the heating chamber. At least one...     

A food container apparatus for use in combination with a pressure cooker which enables food to be cooked with steam, while concurrently the food is browned on the upper surface thereof. The food container apparatus is received within an upwardly opening pressure cooker, with there being a boiler formed...     

Spring 52 mounts on cold plate 12 to urge thermal conductive layers 82 against flange 20 on cold plate 12. Spring has a plurality of pressure flanges, one corresponding to each cold plate flange so that a unitary spring structure can be quickly assembled on the cold plate. Thermal interconnection is...     

Cooling pillow with heat dissipator comprising a head-resting surface which is temperature maintained by thermally transferring heat released by the user to and through a heat conducting metal plate in contact with a wet absorbent medium receiving water from a water tank in a ventilated enclosure.

A single reflective afocal optical module collects and concentrates solar energy onto a receiving surface extending substantially parallel to the focal axis of the optical system and to the central axis of the module. The reflective surface of the collector is shaped to reflect incoming energy and distribute...     

A heat sink for a transistor is provided which comprises a long and a short vertical portion joining a sloped upper surface. The transistor is bolted to the sloped surface with its leads extending below the bottom of the vertical portions. The transistor leads are inserted into a large slot in a printed...     

The invention involves to improvements in heat sink. Required numbers of corrugated fins and separator sheets are alternately stacked together with side bars applied to the opposite edges of each corrugated fin, and all the parts are brazed together. Large thickness side bars are used for either one...     

A heat releasing device comprising a base plate integrally formed with a multiplicity of tongue-like raised fins on at least one side thereof by skiving, each of the skived fins being divided at least at its forward end into a plurality of portions by slits.

A thermally conductive mechanical joint is provided between two object surfaces across which it is desired to conduct heat. The joint includes metallic material of a predetermined melting point below the normal operating temperature of the joint. The metallic material is bounded by a mask forming cells...     

A multilayer miniature low temperature refrigerator wherein a cooling chamber for a device to be continuously cooled is connected to an input and an output by micron sized channels or like passages in respective different interfaces of a laminate of glass or like plates.

An automatic thermal switch to control heat flow includes a first thermally conductive plate 2, a second thermally conductive plate 25 and a thermally conductive switch saddle 1 pivotally mounted to the first plate 2. A flexible heat carrier 27 is connected between the switch saddle 1 and the second...     

A heat exchanger has at least two channels, separated from each other by a wall, for the flow therethrough of fluids such as gases. It is desired that heat exchange should take place between the fluids. The wall is made of a material which is poorly heat-conducting and is penetrated by heat-conducting...     

A microminiature cryogenic device for cooling in the milliwatt range includes a miniature refrigerator in which micron-sized fluid passages are defined in one or more internal surfaces of a laminate of glass or similar low thermal conductivity members by means of lithographic, etching or particle blasting...     

A positive-temperature-coefficient (PTC) thermistor heating element in which joints between metal heat radiating means and the electrodes on a positive-temperature-coefficient thermistor element are attained only with an electrically insulative adhesive in such a way that prior to and during the curing...     

An improved heat sink device for transferring heat from a heat generator to lower-temperature surroundings comprising a device-embedded compound that absorbs heat, delaying temperature rise in the heat generator, at a specific temperature by melting or entering into an endothermic chemical change or...     

A thermal coupler assembly mounted to the coldfinger of a cryogenic cooler which provides improved thermal transfer between the coldfinger and the detector assembly mounted on the dewar endwell. The thermal coupler design comprises a stud and spring-loaded cap mounted on the coldfinger assembly. Thermal...     

The present disclosure describes a heat exchange element for attachment to the external surface of a package containing an integrated circuit chip or die. The element has particular application in high density electronic packaging configurations, where space limitations severely curtail the volume which...     

Elongated hollow members or tubes frictionally engage the interior wall of a hollow corrugating roll or a hollow pressure roll of a single facer so as to minimize the elastic vibration thereof and thereby to minimize the noise developed and transmitted during the operation of the single facer. A plurality...     

Efficient dissipation and uniform spreading of heat from electronic solid-state devices by their associated heat-sink structures is promoted by thin broad-area thermally-conductive mountings built up from layers of a special form of substantially pure flexible and compressible flat graphite sheet material...     

The rate of temperature change of an infrared detector produced by a cooling source in a typical Joule-Thomson cryostat (or other cooling device such as closed cycle cooler) is reduced by interposing a thermal filter between the detector and cooling source. The thermal filter comprises at least two layers...     

A positive-temperature-coefficient (PTC) thermistor heating element in which joints between metal heat radiating means and the electrodes on a positive-temperature-coefficient thermistor element are attained only with an electrically insulative adhesive in such a way that prior to and during the curing...     

A multilayer miniature low temperature rapid cooldown refrigerator in which a central cooling chamber for a device to be continuously cooled is connected to input and output refrigerant lines by micron sized channels formed in interfaces of glass or like plates, the channels including a counterflow heat...     

Resolution and sensitivity of photoconducting light sensitive devices vary nversely with temperature. Hence it is desirable to provide cooling means for photoconductive radiation detectors. One type of low temperature photoconductor is fabricated by placing the photomultiplier tube in a double-walled...     

A pool or spa water heater comprises: (a) a housing containing a combustion chamber, (b) gas burner means associated with the housing to produce hot products of combustion rising in said chamber, (c) a heat exchanger associated with said chamber in the path of said products of combustion to transfer...     

An electrically-heated dry bath wherein a metal block having receptacles for receiving test tubes or the like has resistor heaters fixed thereto and a thermistor temperature sensor therein. A control circuit is provided which connects and disconnects electrical current to and from said heaters in response...     

The leads for an infrared detector unit are arranged to pass through bores in a cooled detector housing with intimate contact with the cooled detector housing for precooling the leads extending from the detector elements to the respective preamp leads.

A cooled infrared detector post includes a detector post formed of a stack of wafer disks with a detector substrate wafer forming one end of the post and a cooling chamber adjacent to the detector substrate with coolant supply and return passages formed in the series of wafers with a supply passage contained...     

A material spreader for spreading a topping material over a wet concrete surface utilizes a pair of hoppers which are driven back and forth on a bridge support spanning the surface. A gasoline engine mounts above the hoppers and furnishes power for a reversibly controllable hydraulic hopper drive motor....     

A thermally conductive electrically insulative laminate for use as chassis barriers in combination with solid-state electronic devices, the laminate comprising at least three layers and including a pair of outer layers disposed on opposite sides of a center layer. The center layer comprises a film of...     

A diamond heatsink for semiconductor devices comprises a stud into which the diamond is pressed. The stud is held by friction in the end of a hollow split cylindrical holder. The holder is clamped in a base or wall member by a locknut which is screwed into the base or wall member and urges two half-conical...     

Evacuable equipment wherein for effective thermal transfer use is made of a thermally conductive fluid confined by a flexible diaphragm for heat transfer across the diaphragm between the fluid and a component forming part of or being treated in the equipment and situated under vacuum in thermal contact...     

A detector thermostat for fire detection systems is disclosed. Such detector thermostat includes a bimetal snap disc thermostat having a metallic disc cup which supports the snap disc. A heat collector is mounted on the disc cup in good heat transfer relationship therewith. The collector provides a flange...     

A thermal radiating system particularly suited for use in space applications is provided with a high ratio of heat transfer to weight and a thin and light weight construction. The radiator includes heat pipes that are spaced to minimize damage from micrometeorites and through which a heat transfer medium...     

A glandless submersible electrical dynamo operative at high temperatures comprising a casing containing a stator and a rotor and a metal alloy filling the space within the casing. The metal alloy is liquid at the operating temperatures of the pump and is an alloy of bismuth, preferably with lead or tin....     

A heat sink for a well logging instrument aids in dissipating heat from electronic components. The heat sink is of rigid, heat conductive metal. The heat sink has an outer surface that is arcuate for mating with the inner surface of the instrument housing. The electrical components are mounted directly...     

A microminiature refrigerator or cryocooler which comprises three flat rectangular plates forming a laminate assembly. Passages are formed as opposed channels in the outer plates for routing refrigerant to and from a refrigerator chamber. The intermediate plate comprises a plurality of hollow spherical...     

An improved magnetic thermal generator has axially aligned, spaced-apart shafts, each with an electric motor at the outer end and on each inner end a permanent cylindrical magnet rotor with alternate north-pole and south-pole disposition of magnets parallel to each other in a circle about the shaft axis....     

A heat radiator assembly conducts the heat generated by electronic parts mounted on a printed board, such as integrated circuits, resistors, and semiconductor elements, through first and second heat sinks to a shield case, so that the heat is radiated therefrom and thus natural air cooling is effected....     

An improved high speed process for texturing continuous filament yarn is provided wherein the improvement comprises cooling the yarn, subsequent to texturing and prior to applying tension, by contact for at least 4 milliseconds with a curved surface at a temperature of -29.degree. to 2.degree. C. and...     

A mounting structure is disclosed for mounting a semiconductor device on a conductive heat sink while electrically insulating the two. A thin, flat thermally conductive electrically insulative sheet is disposed between a flat electrically conductive surface of the semiconductor device and the flat electrically...     

A heat-conducting cooling module for cooling a semiconductor substrate in an integrated circuit package assembly in which a semiconductor substrate is mounted on a base board by small solder pellets, and which contains a single substrate or laminated substrates. A heat-conducting relay member is provided...     

A diamond heatsink assembly for small electronic components such as microwave or millimetric wave devices comprises a frusto-conical shaped diamond held on a support by a clamping member with a part-conical hole through it. One or both of the support and the clamping member are made of a high thermal...     

The invention relates to a fastener assembly for use in attaching articles to printed circuit boards, and include a fastener, which has a generally tubular body, flanged at one end, is adapted to receive a screw. The fastener has a polygonal cross-section over a portion of its length. The flange which...     

A thermal link provides a thermal path between a heat source and a heat sink which compensates for irregularities on the surface of the heat source and/or heat sink and/or nonuniformity in the spacing therebetween. One embodiment utilizes a spring metal device having a free arm which allows the link...     

A fuel gas combustor which utilizes thermal assisted expansion and mixing of the fuel gas and a combustion supporting gas for more complete combustion and greater heat output. A heat transfer device provides thermal feedback from the flame to the gas expansion zone. The invention is especially useful...     

A heat transfer and mounting device having a cross-bar member and at least one leg member. A fastener receptacle is positioned in the cross-bar member for a fastener to affix a heat generating device to the surface of the cross-bar member opposite the at least one leg member. Another fastener receptacle...     

A space heating device which utilizes infrared lamps has enhanced heat transfer, and achieves an air flow velocity increase of approximately 30 percent, resulting in increased efficiency. A heat exchanger comprising a plurality of spaced, parallel copper tubes, and a plurality of spaced, parallel aluminum...     

The use, for heat transfer in evacuable or other equipment, of a thermally conductive fluid, confined by a flexible diaphragm, for heat transfer across the diaphragm between the fluid and a component placed in thermal contact with the diaphragm.

A segmented heat sink device is provided for application to integrated circuit packages for heat dissipation purposes. The segmented heat sink device involves four duplicate sectors, each of which has a patterned set of radial fin elements through which cooling air flow may run. The reduction of the...     

A thermal link provides a thermal path between a heat source and a heat sink which compensates for irregularities on the surface of the heat source and/or heat sink and/or nonuniformity in the spacing therebetween. One embodiment utilizes a spring metal device having a free arm which allows the link...     

A heat sink positioned on a printed circuit (PC) board includes a generally planar center portion and first and second pluralities of spaced planar ribs extending generally transversely from respective lateral edges of the center portion. The heat sink is adapted for generally perpendicular mounting...     

A printed circuit board heat sink retainer is disclosed comprising a mating pair of sawtoothed bars with slidably engaging teeth. The bars are laterally spread apart and held by a forcing device, which may be a screw or a spring, in order to push against and hold a heat sink in a channel. The distance...     

A fuel preheating system for an internal combustion engine wherein a preheater includes a body member having defined therein a pair of serially connected, generally parallel bores defining a flow passages through which a flow of fuel may be passed for heating thereof by elongated electric heaters extending...     

A heat exchanger having a housing with one or more tubes therein for the transportation of a first fluid through the tubes and a second fluid through the housing and at least partially around the tube or tubes, in which each tube includes two concentric walls with a thin layer or thin layers of a relatively...     

A heat sink having a clip bonded thereon for resiliently securing the heat sink to an electronic device package. The clip includes an integral standoff directly bonded to the heat sink for spacing the clip from the heat sink. Preferably the heat sink and clip are surface treated before use.

The specification discloses a steak-cooking spike apparatus (10) for being inserted into an edge (36) of a steak (34). The spike apparatus (10) includes a heat-absorbing rod (12) for being positioned adjacent to the steak (34) immediately above the adjacent to a grill (48) to absorb heat from the grill...     

A semiconductor module includes a multi-layer wiring substrate provided at a first surface with a plurality of input/output terminals and at a second surface with lead terminals connected to the input/output terminals. A cap is provided above the multi-layer wiring substrate by means of leg members which...     

A thermally conductive module for locally extracting heat from an individual electrical component of a circuit board installation comprises a tubular metal housing of high thermal conductivity closed at one end and having at that end a screw-threaded stud for securing the housing to and in thermal contact...     

A heat sink for adhesive attachment to an integrated circuit package has a base plate with gapped areas dividing the plate into sectors. A series of radial fin elements extend from the base plate except at the gapped areas where a bridging fin element spans the gap to effectively help reduce the stresses...     

A heat sink is provided comprising a mixture of electrically non-conductive particles of microcrystalline material, such as diamond or cubic boron nitride, and an electrically non-conductive filler material, such as a fluorocarbon or paraffin, which fills the voids between said particles. The heat sink...     

A component assembly is provided comprising a housing having connector means extending externally thereof, locating means mounted in the housing, a plurality of components located by said locating means, the components being connected to one another and to said external connector means, and a heat sink...