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| Number | Title | Issue Date |
| 5158755 | Chemical processing tank A device for holding and controlling the temperature of a corrosive chemical processing bath. The device has a tank having a bottom intimately covering thermally conductive fins, a heat sink thermally connected to the fins and heaters, connected to the he... | 10/27/1992 |
| 5148862 | Heat exchanger fin materials and heat exchangers prepared therefrom Disclosed herein are aluminum alloy fin materials useful for heat exchangers which consists of, in weight percentage, 0.8 to 1.8% Fe, 0.3 to 3.0% Zn, up to 0.3% Cu and at least one element selected from the group consisting of 0.05 to 0.25% Zr and 0.05 to... | 09/22/1992 |
| 5146979 | Enhanced heat transfer surface and apparatus and method of manufacture An apparatus and method for producing a high performance evaporator tube having a subsurface channel formed between adjacent helical fins with the subsurface channels having alternating closed portions and open pores above the subsurface channels. The fin... | 09/15/1992 |
| 5143150 | Geothermal heat converter A geothermal heat converter for converting geothermal heat to steam. The converter is mounted in the lower end of a geothermal well conduit and includes a cup portion in direct engagement with the geothermal brine or medium. The cup portion is sealed with... | 09/01/1992 |
| 5141049 | Treatment of heat exchangers to reduce corrosion and by-product reactions The invention provides a method of extending the useful life of high temperature heat exchangers, e.g., reactor feed/effluent heat exchangers, in installations where the heat exchanger is contacted by a process fluid stream, e.g., a feedstock comprising e... | 08/25/1992 |
| 5137067 | Hydrophilic and corrosion resistant fins for a heat exchanger A fin for a heat exchanger is coated with a hydrophilic and corrosion resistant coating formed by applying an aqueous solution consisting essentially of a plasticized vinyl chloride polymer, an aqueous dispersion of a high molecular weight resin, and inte... | 08/11/1992 |
| 5128184 | Modification of wet sleeve in a diesel engine A wet sleeve from a diesel engine is coated with Teflon in the area which will be in contact with the water from the cooling system. The Teflon coating will prevent the sleeves from being pitted from the boiling of the water against the sleeve.... | 07/07/1992 |
| 5125452 | Aluminum alloy clad material Disclosed is an aluminum alloy clad material and a heat exchanger using the clad material, the clad material being composed of: (a) a core material made of an aluminum alloy consisting essentially of, in weight percentage, 0.3 to 1.5% manganese, 0.05 to 0... | 06/30/1992 |
| 5099912 | Housingless oil cooler A core for a housingless oil cooler has alternate cooling water passageways and oil passageways, including two sets of aluminum plates coated on one side with a sacrificial corrosion layer and on the other side with a brazing filler metal layer, each plat... | 03/31/1992 |
| 5091075 | Reforming process with improved vertical heat exchangers A process for the reforming of hydrocarbons is improved by the use of an enhanced nucleate boiling surface in a selected portion of the feed effluent heat exchanger. In a vertical type heat exchanger where the reforming feedstream enters at a lower end of... | 02/25/1992 |
| 5086831 | Arrangement for the catalytic oxidation of the harmful components in a cooled carrier gas of a technical process An arrangement for the catalytic oxidation of the harmful components in a cooled carrier gas from a technical process. The arrangement includes two parallel gas ducts which are connected at one end through a bend and whose other ends are connected to gas ... | 02/11/1992 |
| 5087319 | Apparatus for continuous manufacture of laminates The invention is directed to an apparatus for continuous fabrication of laminates comprising several layers of at least partially resin impregnated material webs which are extruded together. The material webs are taken off supply coils in the take off uni... | 02/11/1992 |
| 5079087 | Process for making metal surfaces hydrophilic and novel products thus produced The surfaces of articles of manufacture fabricated from aluminum or other metals which are not permanently hydrophilic are made permanently hydrophilic by coating the surfaces with a continuous film containing particles of activated alumina. The coated ar... | 01/07/1992 |
| 5077103 | Refractory solid-state heat pipes and heat shields A refractory solid-state heat pipe assembly, or heat shield, capable of solid-state operation at high and low extreme temperature ranges in hostile environments, with particular application found in hypersonic vehicle surfaces, is provided.... | 12/31/1991 |
| 5070937 | Internally enhanced heat transfer tube An internally enhanced heat transfer tube comprising a heat transfer tube including an internal surface and an internal diameter (D); a plurality of roughness elements on the internal surface of the heat transfer tube, each roughness element having a heig... | 12/10/1991 |
| 5070938 | Aluminum heat exchanger and method of manufacturing same A heat exchanger made of aluminum comprises a plurality of tubes made of aluminum through which a fluid to be heat exchanged flows, the tubes having a metal surface of aluminum; fins made of aluminum arranged between the tubes for accelerating heat exchan... | 12/10/1991 |
| 5068129 | Process for converting a fluid system of a machine from an oil based fluid system to a water based fluid system A process for converting a fluid system of a machine from an oil based fluid system to a water based fluid system. A solvent and perfluoroethylene resin are added to the fluid system in sufficient amounts to remove extraneous matter from and coat the surf... | 11/26/1991 |
| 5058196 | Electric infrared heater having a gas permeable electroformed porous metallic panel coated with a porous ceramic far-infrared radiating layer An electric far-infrared heater has a plate-like porous metallic panel formed by an electroforming process installed in a box-like housing over an electric heating element therein. The panel is heated by the element and has its outer surface covered by a ... | 10/15/1991 |
| 5054548 | High performance heat transfer surface for high pressure refrigerants A heat transfer surface for effecting boiling of a high pressure refrigerant in contact with the surface. The surface includes a plurality of spaced apart fins which extend from the side in contact with the boiling fluid. Each of the fins has a base porti... | 10/08/1991 |
| 5054549 | Heat exchanger A heat exchanger including a plurality of flat tubes having first and second open ends is disclosed. First and second header pipes are disposed at the first and second open ends of the tubes. The header pipes are constructed of a central tube, and inner a... | 10/08/1991 |
| 5052476 | Heat transfer tubes and method for manufacturing A heat transfer tube having an inner surface in which are formed primary grooves and secondary grooves. The primary grooves parallel to one another, extending at an angle to the longitudinal direction of the heat transfer tube and secondary grooves parall... | 10/01/1991 |
| 5048600 | Condensor using both film-wise and drop-wise condensation A vapor is condensed onto a condensor whose upper portion promotes film-wise condensation and whose lower portion promotes drop-wise condensation. One embodiment of this invention uses a plastic condensing tube which has a metal condensor pipe inserted in... | 09/17/1991 |
| 5042575 | Evaporator core having biocidal fixture In a preferred embodiment of the invention, an evaporator core for an automotive air conditioning system or the like comprises a brazed plate-and-fin heat exchanger formed of aluminum alloy and having air passages opening at an upstream face. The evaporat... | 08/27/1991 |
| 5042574 | Finned assembly for heat exchangers Potential difficulties with corrosion in heat exchangers utilizing aluminum fins are avoided by using fin and tube constructions made by a method which includes the steps of providing a flattened tube (50) of ferrous material (80) and having an exterior c... | 08/27/1991 |
| 5036903 | Graphite tube condensing heat exchanger and method of operating same The present invention is directed to a method for recovering heat from a gas stream contaminated with water vapor and an acid-forming moiety, said gas having an acid dew point ranging from about 200° F. to 300° F. and a water dew point ranging from abou... | 08/06/1991 |
| 5036909 | Multiple serpentine tube heat exchanger A multiple serpentine tube heat exchanger having side-by-side arranged serpentine-shaped passageways each extending across the core and a mixing chamber connecting one such passageway to at least one other. The passageway constituting the back of the heat... | 08/06/1991 |
| 5035282 | Heat exchanger made of aluminum and surface treating method therefor A heat exchanger made of aluminum and apt to collect water thereon, e.g., an evaporator of an automotive air conditioning system is provided with an anodized surface layer which has numerous pores therein. Fungicide is filled in the pores to eliminate an ... | 07/30/1991 |
| 5033272 | Freezer-refrigerator A refrigerator comprising a refrigeration cycle which comprises a compressor, condenser, first capillary tube and first cooler connected into a loop, and a quick freezing refrigerant circuit connected in parallel with the first cooler and comprising a sec... | 07/23/1991 |
| 5028760 | Infrared heater An infrared electric panel heater includes an open side covered by a sintered or electroformed porous metallic panel. An electric sheathed heating element is installed in the housing in contact with the inner surface of the porous panel. The outer surface... | 07/02/1991 |
| 5018573 | Method for manufacturing a high efficiency heat transfer surface and the surface so manufactured A method for manufacturing a heat transfer surface and the surface so manufactured. The porous surface is produced by flame spraying a metal substrate with a mixture of metallic and nonmetallic powder particles. The surface is then heated, causing the non... | 05/28/1991 |
| 5014774 | Biocidal coated air conditioning evaporator An automotive air conditioning system evaporator core is formed of an aluminum alloy and has a biocidal coating comprising a zinc layer deposited onto said aluminum alloy and an outermost elemental copper plate overlying said zinc layer. During air coolin... | 05/14/1991 |
| 5012862 | Hydrophilic fins for a heat exchanger A coating of a polysulphonic acid is applied to a fin of an aluminum heat exchanger to render the surface hydrophilic.... | 05/07/1991 |
| 5010643 | High performance heat transfer tube for heat exchanger A high-performance heat transfer tube for an evaporator of an air-conditioning or refrigeration system is formed on a grooved mandrel that has a sufficient number of grooves, such as 60 to 90 for a 5/8 inch tube, to produce a small-pitch internal rib enha... | 04/30/1991 |
| 5009962 | Surface treatment chemical and bath for forming hydrophilic coatings and method of surface-treating aluminum members Hydrophilic coatings on aluminum plates comprising, on a solid basis, 5-25 parts by weight of a sodium salt and/or a potassium salt of carboxymethylcellulose, and 25-50 parts by weight of an ammonium salt of carboxymethylcellulose, and 25-70 parts by weig... | 04/23/1991 |
| 4998580 | Condenser with small hydraulic diameter flow path An improved condenser for use in air conditioning or refrigeration systems. A pair of spaced headers have a plurality of tubes extending in hydraulic parallel between them and each tube defines a plurality of hydraulically parallel, fluid flow paths betwe... | 03/12/1991 |
| 4991407 | Auger type ice flaking machine with enhanced heat transfer capacity evaporator/freezing section An auger type ice flaking machine has an evaporator section defined in part by a vertically oriented flaker barrel with closed upper and lower ends, and a knurled longitudinally intermediate exterior side surface positioned within an annular hollow jacket... | 02/12/1991 |
| 4981172 | Mechanism for heat transfer A device for heat transfer or for heat dissipation from an object to a fluid, especially air is disclosed. The device is coated at least in part with shavings, metal wires or coarse metal powder made of thermally conductive material and sintered. The obje... | 01/01/1991 |
| 4971142 | Heat exchanger and heat pipe therefor A heat pipe is formed of two elongated tubular members each having an open end and a closed end and joined at their open ends in gas-tight relationship by means of an annular collar. The annular collar is adapted at one end to fit over the open end of one... | 11/20/1990 |
| 4957159 | Aluminum heat exchanger provided with fins having hydrophilic coating The fins of an aluminum heat exchanger are treated with a coating composition comprising an alkali silicate, an inorganic hardening agent and a water-soluble organic high-molecular-weight compound, whereby a hydrophilic coating is formed over the surfaces... | 09/18/1990 |
| 4956427 | Process for reducing polymer build-up in polymerization equipment during polymerization of alpha-olefins A method for the prevention of fouling of metallic surfaces exposed to reactive alpha-olefin gases during the production of polymeric resins which comprise coating such metallic surfaces with an amino silicone fluid and thereafter curing said coating by h... | 09/11/1990 |
