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| Number | Title | Issue Date |
| 7895748 | Method of molding a resin coated bearing, method of manufacturing a resin coated bearing, and a resin coated bearing molded by the molding method Disclosed is a method of molding a resin coated bearing. When a molten resin is injected toward a substantially central portion of a disk space of forming dies from a sprue formed on an upper die, the molten resin is filled into a cavity through a film gate after th... | 03/01/2011 |
| 7886440 | Manufacture method for inner-fin tube and manufacture device for the same A manufacture method for an inner-fin tube includes a tube forming process for continuously forming a tube member joined at one end side thereof, an inner fin transferring process for continuously transferring an inner fin member, an inner fin twisting process for t... | 02/15/2011 |
| 7690114 | Tube having reinforcing structures made of profile rolled metal and method of producing same Disclosed is a tube made of a profile rolled metal product, in particular for use in heat exchangers, a rolled metal product and a method of producing the same. The tube includes a first wall and a second wall forming two opposing sides of the tube, and a plurality ... | 04/06/2010 |
| 7637012 | Method of forming protrusions on the inner surface of a tube A method of forming a plurality of protrusions on the inner surface of a tube to reduce tube side resistance and improve overall heat transfer performance. The method includes cutting through ridges on the inner surface of the tube to create ridge layers and lifting... | 12/29/2009 |
| 7341099 | Metal plate for producing flat tube, flat tube and process for producing the flat tube A metal plate comprises two flat wall forming portions 89, 90 connected together by a joint portion 88, a plurality of reinforcing wall forming portions 83, 84 upwardly projecting from each of the wall forming portions 89, 90 integrally t... | 03/11/2008 |
| 7290595 | Inner fin with cutout window for heat exchanger An inner fin (1) of a heat exchanger has, on front and rear faces thereof, protruding ridges (2, 3) protruding in opposite directions to each other. Grooves (4, 5) to serve as passages of a heat exchange medium are formed between the adjacent pr... | 11/06/2007 |
| 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 |
| 7243712 | Fin tube assembly for air-cooled condensing system and method of making same A fin tube assembly has a core tube of elongated transverse cross-section having rounded leading and trailing sides, opposite flat faces, and opposite open ends for flow through the tube. A plurality of fins project in opposite directions from finned areas of the op... | 07/17/2007 |
| 7204302 | Exhaust gas heat exchanger A tube 101 is constituted by a pair of plates 111a, 111b which are fitted with each other in such a manner as to put an inner fin 101b between the plate 111a and the plate 111b. Differences... | 04/17/2007 |
| 7140107 | Stacking-type, multi-flow, heat exchangers and methods for manufacturing such heat exchangers In a method for manufacturing a stacking-type, multi-flow, heat exchanger, heat transfer tubes and outer fins are stacked alternately, each heat transfer tube being formed by connecting a pair of tube plates and including an inner fin therebetween. The manufacturing... | 11/28/2006 |
| 7128138 | Indirect evaporative cooling heat exchanger A heat exchanger including a header having a plurality of header openings with rigid tubes that may be made of plastic are inserted in the openings. The tubes are sealed to the header to prevent leakage between the header and the tubes to prevent water and air leaka... | 10/31/2006 |
| 7117936 | Tube for heat exchanger In a tube (4) for a heat exchanger comprising a flat pipe (16) whose both ends are opened and in which a flow path (15) for a heat exchanging medium is formed, and an inner fin (17) arranged in the flow path (15), wherein said flat... | 10/10/2006 |
| 7111666 | Heat sink A heat sink is constructed including at least one heat sink fin. Each fin includes an opening sized to fit a thermal device when the fins are heated to a temperature above that of the thermal device. When the fins cool to the temperature of the thermal device they s... | 09/26/2006 |
| 6896977 | Method of brazing aluminum or aluminum alloy materials and aluminum alloy brazing sheet A method of brazing an aluminum or aluminum alloy material, containing brazing an aluminum alloy brazing sheet that has an aluminum or aluminum alloy core material and, being clad on one or both surfaces, a filler alloy layer comprised of an Al—Si-based alloy and ... | 05/24/2005 |
| 6817098 | Method for forming inner flanges in a bushing which is used to secure a hose therein A method of forming inner flanges in a bushing comprises steps of (a) extruding a bushing into an extruding die, (b) cutting an initial upward flange in the bushing, (c) shaping the initial upward flange into a final inner flange, and (d) repeating steps (a) to (c) ... | 11/16/2004 |
| 6760972 | Apparatus and methods for forming internally and externally textured tubing A machine may produce a tube having textured internal and external surfaces in a single operation. Inner and outer knurling tools may form the textured surfaces. The texturing of the internal and external surfaces may be helical patterns of ribs and grooves. The hei... | 07/13/2004 |
| 6640886 | Heat exchanger tube, heat exchanger and method of making the same An economically formed tube of rectangular or oval-like cross section and with a corrugated internal fin includes spaced, relatively long side wall sections joined at their ends by relatively short end wall sections. An integral fin within the tube has cr... | 11/04/2003 |
| 6571473 | Method and system for manufacturing refrigerant tubes for condensers A method of manufacturing a refrigerant tube for a condenser includes forming an inner fin like a band plate having a predetermined length, forming a holder having a substantially V-shaped open section and a predetermined length, inserting the inner fin i... | 06/03/2003 |
| 6539628 | Formed strip and roll forming A V-shaped metal strip has a U-shaped bottom having U-shaped inside and outside surfaces. Only the U-shaped inside surface is formed with a plurality of fold lines extending in a longitudinal direction of the strip and reducing the influence of springback... | 04/01/2003 |
| 6470570 | Method for making a tube for a heat exchanger having a fin insert with transverse convolutions An apparatus and method for making a heat exchanger tube (14) for a heat exchanger (10) in which a continuous insert (26), having convolutes transverse to the length of the tube are located into a continuous shell as the shell is being formed. After placi... | 10/29/2002 |
| 6467170 | Tube for heat exchangers and method of manufacturing same A tube for a heat exchanger which is formed to have beads for dividing passages for a medium in the tube by roll forming, wherein base portions of the beads are formed to have a thickness (B) greater than a thickness of a plate material for the tube. The ... | 10/22/2002 |
| 6453711 | Flat turbulator for a tube and method of making same A tube and turbulator and method of making the same for a heat exchanger including a base, a top spaced from and opposing the base, a first side interposed between the base and the top along one side thereof, and a second side interposed between the base ... | 09/24/2002 |
| 6446336 | Heat exchanger and method of constructing same A method of forming a heat exchanger apparatus on a housing wall. The heat exchanger includes inner and outer annular rings. The rings have heat radiating, high surface area fins attached on oppositely facing surfaces. The inner ring has a radially outwar... | 09/10/2002 |
| 6418614 | Cutting apparatus for roll-formed product of roll-forming unit An apparatus for cutting a roll-formed product for a roll-forming unit has at least a roll-forming machine. The cutting apparatus has a cutter mechanism arranged downstream of the roll-forming machine, for cutting the roll-formed product sent out from the... | 07/16/2002 |
| 6340050 | Internally grooved heat exchanger pipe and metal bar working roll for internally grooved heat exchanger pipes An internally-grooved heat exchanger tube according to the present invention is structured such that the internal surface is divided into a plurality of continuous areas (W1, W2) parallel to the axial direction (L) of the tube, a large number of fins (10,... | 01/22/2002 |
| 6241012 | Folded tube for a heat exchanger and method of making same A folded tube and method of making the same for a heat exchanger includes a base, a top spaced from and opposing the base, a first side interposed between the base and the top along one side thereof, and a second side interposed between the base and the t... | 06/05/2001 |
| 6192977 | Tube for heat exchanger A tube for a heat exchanger has a cross-section having two opposed side walls and two opposed ends. The ends have curved portions and one of the ends has a double wall comprising an inner wall and an outer wall. One of these side walls extends to form the... | 02/27/2001 |
| 6192978 | Micro-multiport (MMP) tubing with improved metallurgical strength and method for making said tubing This invention is a process for making micro-multiport tubing for use in automobile air conditioner heat exchangers. The tubing is a flat body with a row of side-by-side passageways, which are separated by upright webs. Processing of this tubing involves ... | 02/27/2001 |
| 6178634 | Miniature recycle-type heat exchange production method A miniature recycle-type heat exchanger to produce recycle-type heat exchangers from high extensibility, high plasticity aluminum or copper billets (ingots) utilizing a pressure forming press to extrude lightweight, thin, and small form factor recycle-typ... | 01/30/2001 |
| 6167621 | Center feed parallel flow cold plate dual refrigeration systems A cold plate includes two flow-wise isolated coolant (or refrigerant) passages (or sets of passages) originating at the center of the cold plate and terminating at an edge for use in conjunction with separate refrigeration systems. The cold plate passages... | 01/02/2001 |
| 6138354 | Method of manufacturing a corrugated plate by rolling for use as an inner fin of a heat exchanger A metallic corrugated plate applying to a cooling inner fin of a heat exchanger, wherein a bending angle .THETA. of an end bent ridge portion is smaller than bending angle θ of the other bent ridge portions. Thus, in case the bending angle .THETA. become... | 10/31/2000 |
| 5979051 | Heat exchanger and method of producing the same A heat exchanger that a tube member 2' has beads 21 protruded from the face of one plate toward the other plate, tube member 2' is held by block members 31, 31, a forming jig 40 is inserted between medium passages 24, 24 formed by the beads 21 to hold to ... | 11/09/1999 |
| 5934128 | Heat transfer tube having grooved inner surface The present invention has the object of increasing the heat exchanging performance of heat transfer tubes having grooved inner surfaces. In order to achieve this object, the heat transfer tubes having grooved inner surfaces according to the present invent... | 08/10/1999 |
| 5896660 | Method of manufacturing an evaporator tube A method of manufacturing an evaporation tube including the step of forming spaced refill passages and notches of differing size in edge portions of bent fins or ribs extending from an outer surface of a tube.... | 04/27/1999 |
| 5704424 | Heat transfer tube having grooved inner surface and production method therefor The object of the present invention is to offer a heat transfer tube having a grooved inner surface, wherein the side edges of the board material do not form a waved shape and cracks do not form during tube expansion. In order to achieve this object, the ... | 01/06/1998 |
| 5687677 | Heat exchange tube and method of making same An elongated heat exchange tube and method of making same are disclosed wherein a pair of elongated generally right-angle metallic wall members are adapted for mirror image connection to form an outer tube wall of generally rectangular transverse cross-se... | 11/18/1997 |
| 5662457 | Heat insulation assembly An improved heat insulation assembly for a thermal turbo-engine having hollow spaces, is provided with the assembly including a heat-insulating material enclosed within a heat-resistant cover that is formed such that it permits an increase in the inner vo... | 09/02/1997 |
| 5656332 | Method of manufacturing a long continuous tube having a coating of brazing powders A long continuous tube, strip or like material has a coating of brazing powders applied and formed thereon. It may be cut to sections of specific length when actually used. A uniform coating of brazing powders is applied in specific quantities and fixed o... | 08/12/1997 |
| 5553377 | Method of making refrigerant tubes for heat exchangers A refrigerant tube for use in heat exchangers comprises a flat aluminum tube having parallel refrigerant passages in its interior and comprising flat upper and lower walls and a plurality of reinforcing walls connected between the upper and lower walls, e... | 09/10/1996 |
| 5456006 | Method for making a heat exchanger tube A method for making a tube for an automotive heat exchanger is disclosed. The method comprises the steps of feeding the tube stock and turbulator stock into the tube mill; forming the tube stock into a tube; and forming the turbulator stock into a general... | 10/10/1995 |
