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| Number | Title | Issue Date |
| 7451542 | Method of manufacture of heat-exchanger tube structured on both sides The invention relates to a heat-exchanger tube structured on both sides with excellent heat transfer characteristics utilizing both outer and also inner fins and secondary grooves intersecting the inner fins. Two spaced-apart rolling tools are provided in the utiliz... | 11/18/2008 |
| 7353658 | Systems and methods for freezing, storing, transporting, and thawing biopharmacuetical material A system for freezing, thawing, transporting, and storing a biopharmaceutical material, which includes a container, a supporting structure, a temperature control unit, and a transportation cart. The container is adapted to receive the biopharmaceutical material ther... | 04/08/2008 |
| 7285745 | Method for manufacturing components consisting of one piece which appear in a weaving machine The invention relates to a method for manufacturing components consisting of one piece which appear in a weaving machine, comprising one or more first and second parts, said parts being manufactured in separate first and second parts and joined together to form a wh... | 10/23/2007 |
| 7267166 | Grooved tubes for heat exchangers that use a single-phase fluid Grooved metal tubes, with a groove-bottom thickness Tf and outside diameter De, internally grooved with N helical ribs having an apex angle α, height H, base width LN, and helix angle β, two consecutive ribs being separated by a groove, gener... | 09/11/2007 |
| 7267161 | Heat exchanger comprising a supercritical carbon-dioxide circuit The invention relates to a heat exchanger comprising a supercritical carbon-dioxide circuit comprising a plurality of tubes (1). The heat exchanger is original in that at least one section of the tubes (1) have surface irregularities (3) ... | 09/11/2007 |
| 7254964 | Heat transfer tubes, including methods of fabrication and use thereof An improved heat transfer tube, an improved method of formation and an improved use of such a heat transfer tube is disclosed. The heat transfer tube includes an outer surface with a plurality of radially outwardly extending helical fins, the fins being grooved to d... | 08/14/2007 |
| 7253374 | Sheet-to-tube welded structure and method Method of welding a metal sheet and metal tubing as well as a welded sheet-to-tube welded structure wherein the tube-to-sheet gage ratio may be reduced to permit use of metal tubing having a reduced wall thickness. One or more intermediate metal bridging members is/... | 08/07/2007 |
| 7197808 | Process for forming a groove in a friction layer Device for forming of at least one groove (92, 93, 94, 95, 96, 97, 98) in a friction layer (91) of a covered disk (90) for a force transmission aggregate, in particular for a disk clutch, with a rolling device (1, 11, 21, 31) with at leas... | 04/03/2007 |
| 7178361 | Heat transfer tubes, including methods of fabrication and use thereof The present invention discloses an improved heat transfer tube, an improved method of formation, and an improved use of such heat transfer tube. The present invention discloses a boiling tube for a refrigerant evaporator that provides at least one dual cavity nuclea... | 02/20/2007 |
| 7137261 | Systems and methods for freezing, mixing and thawing biopharmaceutical material A system for controlled freezing, storing and thawing of a biopharmaceutical material includes a cavity for receiving a container for holding the biopharmaceutical material. Further included are at least a pair of opposed surfaces facing the biopharmaceutical materi... | 11/21/2006 |
| 7131276 | Pulse tube refrigerator The present invention relates to pulse tube refrigerators for recondensing cryogenic liquids. In particular, the present invention relates to the same for magnetic resonance imaging systems. In many cryogenic applications components, e.g. superconducting coils for m... | 11/07/2006 |
| 7104074 | Systems and methods for freezing, storing, transporting and thawing biopharmaceutical material A system for freezing, thawing, transporting, and storing a biopharmaceutical material, which includes a container, a supporting structure, a temperature control unit, and a transportation cart. The container is adapted to receive the biopharmaceutical material ther... | 09/12/2006 |
| 7093650 | Heat conduction pipe externally covered with fin member It is an object of this invention to obtain a heat conduction pipe superior in corrosion resistance as well as heat exchange efficiency between fluid flowing respectively through an inside and an outside for great heat radiation property and endothermic characterist... | 08/22/2006 |
| 6996995 | Systems and methods for freezing and storing biopharmaceutical material The present invention provides a system for freezing, thawing, and storing biopharmaceutical materials which includes a flexible container, a conduit, and a temperature control unit. The flexible container is adapted to receive a biopharmaceutical material therein f... | 02/14/2006 |
| 6976301 | Finned tube with vortex generators for a heat exchanger A system for and method of manufacturing a finned tube for a heat exchanger is disclosed herein. A continuous fin strip is provided with at one pair of vortex generators. A tube is rotated and linearly displaced while the continuous fin strip with vortex generators ... | 12/20/2005 |
| 6945056 | Systems and methods for freezing, mixing and thawing biopharmaceutical material A system for controlled freezing, storing and thawing of a biopharmaceutical material includes a cavity for receiving a container for holding the biopharmaceutical material. Further included are at least a pair of opposed surfaces facing the biopharmaceutical materi... | 09/20/2005 |
| 6928833 | Finned tube for heat exchangers, heat exchanger, process for producing heat exchanger finned tube, and process for fabricating heat exchanger A heat exchanger finned tube 10 for use in fabricating a heat exchanger 1 useful as the evaporator for refrigerators or the like wherein a hydrocarbon refrigerant is used. Two tube insertion holes spaced apart from each other are formed in each of plat... | 08/16/2005 |
| 6904779 | Method of manufacturing a heat exchanger tube with parallel fins A method of forming a finned tube in which the fins are planar, paralleled and extend radially to the tube longitudinal axis, including the steps of positioning at least one rotating forming roll against the tube exterior surface, the forming roll being spaced from ... | 06/14/2005 |
| 6789317 | Finned tube with vortex generators for a heat exchanger A system for and method of manufacturing a finned tube for a heat exchanger is disclosed herein. A continuous fin strip is provided with at least one pair of vortex generators. A tube is rotated and linearly displaced while the continuous fin strip with vortex gener... | 09/14/2004 |
| 6715202 | Tube bender for forming serpentine heat exchangers from spine fin tubing An apparatus and method of forming serpentine heat exchanger coils from spine fin tubing involves applying spine fins to a tube while simultaneously forming the tube into a serpentine shape. The bending and fin wrapping occurs while a feed roll continues paying out ... | 04/06/2004 |
| 6601299 | Tapered fin and method of forming the same A method of forming an extended surface heat transfer fin by differentially rolling a metal strip having a wedge-shaped profile. The method includes linearly stretching the thicker edge of the metal strip to a greater degree than the thinner edge.... | 08/05/2003 |
| 6443040 | Process for manufacturing screws and a device for actuating the process A device for manufacturing a screw (2) comprises a cylindrical support (3) having a horizontal axis (x-13 x)and being rotatable there about. A straight bar (7) is wound spirally about the support (3). The bar (7) is constrained to a guide (8) and can perf... | 09/03/2002 |
| 6439301 | Heat Exchangers The invention relates to a heat exchanger, which includes a pipe, heat conductive fins having an elongate cross-section, and a coating of silver applied to the outer surface of the fins and the outer surface of the pipe adjacent to the fins. The fins of t... | 08/27/2002 |
| 6336501 | Tube having grooved inner surface and its production method A tube having a grooved inner surface capable of achieving high condensing performance and high evaporating performance even in a region of a small flow rate of a refrigerant and preferable as a heat exchanger tube for a condenser as well as an evaporator... | 01/08/2002 |
| 6253452 | Method for manufacturing cylindrical radiator A method for manufacturing a cylindrical radiator that includes the step of drawing material to form an elongated blank material having a hollow cylindrical base section and multiple heat-radiating fins radially projecting from the outer circumference of ... | 07/03/2001 |
| 5809647 | Process for manufacturing ribbed tubes A process for manufacturing ribbed tubes, wherein a stainless steel tube is provided with ribs by helicoidally winding a copper strip around it. In joining the tube and rib, the unmelted copper strip is set on the tube surface edgewise into a melted area ... | 09/22/1998 |
| 5803164 | Multiple finned tube and a method for its manufacture A metallic finned tube having multiple fins integrally formed on and extending helically on an outside of the tube. The fins number at least four and begin at fin run start locations spaced evenly about a circumference of the tube, with at least one group... | 09/08/1998 |
| 5781987 | Apparatus for manufacturing a needle-rib heat-exchanger construction An apparatus for manufacturing a needle-rib heat-exchanger construction including a band which is wound around a tube. Initially, cuts are formed on both sides of an elongate band and thereafter the band is passed through a series of engaging former wheel... | 07/21/1998 |
| 5781996 | Method of manufacturing heat transfer tube An evaporator heat transfer tube (10) for use in a heat exchanger where heat is transferred between a fluid flowing through the tube and a fluid flowing around the exterior of the tube and where the fluid external to the tube boils during the heat exchang... | 07/21/1998 |
| 5761807 | Method of manufacture of a multiple finned tube A metallic finned tube, in particular for heat exchangers, which includes multiple integral fins helically extending on the outside, with the n fin run starts starting at the start of the tube and are evenly distributed around the tube periphery. The finn... | 06/09/1998 |
| 5709029 | Manufacture of helically corrugated conduit This invention concerns the manufacture of helically corrugated conduit having at least a portion of its length corrugated in the form of at lease one helix. The method includes the driving of a smooth walled tube into a forming head having forming wheels... | 01/20/1998 |
| 5669441 | Heat transfer tube and method of manufacture An evaporator heat transfer tube (10) for use in a heat exchanger where heat is transferred between a fluid flowing through the tube and a fluid flowing around the exterior of the tube and where the fluid external to the tube boils during the heat exchang... | 09/23/1997 |
| 5575066 | Method of manufacturing freezing cylinders for ice cream making machines The invention relates to a method of manufacturing freezing cylinders for ice cream making machines, with incorporated evaporator of the refrigerating circuit, characterized in that it comprises the steps of: forming a helical groove on the outer surface ... | 11/19/1996 |
| 5564184 | Method for making heat pipes A metalworking tool is capable of making internally grooved and externally finned heat exchanger coils from ordinary tubes in a single operation in which the tubes are expanded into bonding mechanical contact with external fins at the same time that groov... | 10/15/1996 |
| 5423121 | Automated fin tube process A process to form a continuous fin helically around the exterior of a cylindrical tube by rotation of a primary forming roller and rotation of a contiguous spindle roller. The process includes advancing and inserting the fin in a gap between the primary f... | 06/13/1995 |
| 5222299 | 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... | 06/29/1993 |
| 5167275 | Heat exchanger tube with turbulator A heat exchange tube is provided and includes a turbulator therein incorporating a tubular center core and a spiral wrap about the core. The turbulator is first inserted within the heat exchange tube with minimum clearance between the spiral wrap and the ... | 12/01/1992 |
| 5107575 | Heat exchanger and method of manufacturing the same A pin-fin type heat exchanger comprising a plurality of wire-like heat conductive elements arranged in parallel and spaced from each other, and formed into a corrugated shape, and a method of manufacturing the same by making a corrugated sheet including t... | 04/28/1992 |
| 5092038 | Method of manufacturing spiral heat exchanger tubes with an external fin An improved heat exchanger tube is provided in which the tube has one or more paralleled integral spirals formed in the tube wall providing on the exterior surface one or more convoluted spiral recesses of selected pitch, and fin members affixed to the sp... | 03/03/1992 |
| 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 |
