U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Quotables

"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."

Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 29/890.036 - Tube inside tube


Subclass of Class 29 - Metal working
Definition: Process wherein the heat exchanger or boiler made has an
No. of patents: 78
Last issue date: 01/05/2010


1    
NumberTitleIssue Date
7640662Method of making heat exchangers
The heat exchanger is made economically by pressure-forming cavities in relatively thick thermo-plastic panels, interleaving them with other thermo-plastic panels having separate gas flow conduit structures, and securing the panels together. Preferably, the heat exc...
01/05/2010
7451541Method of heat shielding an inner tube
A protective sheath for a fluid-carrying tube is made from a larger tube cut into longitudinal tube segments and slice into opposed halves before being re-secured together about the fluid-carrying tube. Slip joints are preferably provided between adjoining outer tub...
11/18/2008
7404254Calibrated catalyst carrier body with corrugated casing and method for manufacturing the same
A method for manufacturing a catalyst carrier body includes producing a honeycomb body having at least partially structured layers forming channels through which a fluid can flow. The honeycomb body has an external extent formed at least partially by ends of the lay...
07/29/2008
7383633Non-cylindrical catalytic-converter carrier element and tool, and method for manufacturing it
A method for the production of a converter-carrier body having a metallic honeycomb body made of a plurality of metal layers, especially smooth layers and corrugated layers, the layers having layer ends, such that an outer shape of the honeycomb body is formed by th...
06/10/2008
7380327Tube interface and method of securing a first tube to a second tube
A tube interface (53) includes a first tube (28) and a second tube (34). The first tube (28) has an oblong opening (54) exhibiting a first major dimension (58), and the second tube (34) has an oblong end (52) e...
06/03/2008
7350823Double pipe forked part structure and method of making the same
A forked part structure of a double pipe has an outer pipe, an inner pipe, a branch pipe and an open end portion of the outer pipe. The open end portion of the outer pipe has a substantially tubular inner pipe supporting portion to which the inner pipe is brazed, an...
04/01/2008
7322379Flexible kink-resistant hoses
A flexible kink-resistant hose configuration includes concentric tubes with longitudinal ribs. ...
01/29/2008
7303002Fin structure, heat-transfer tube having the fin structure housed therein, and heat exchanger having the heat-transfer tube assembled therein
A fin structure, a heat-transfer tube and a heat exchanger are formed of plate fins housed in a heat-transfer tube and have an excellent cooling efficiency by making the distribution and flow velocity of a flow uniform and by promoting an efficient heat-exchanging a...
12/04/2007
7288109Method of manufacturing a heat transfer element for in vivo cooling without undercuts
An intravascular heat transfer device is provided with a mixing-inducing surface formed by an easily manufacturable process. The device can have a plurality of elongated, articulated segments, each having a mixing-inducing exterior surface. A flexible joint connects...
10/30/2007
7243500Heat exchanger and temperature control unit
Systems and methods for heat exchange in accordance with the invention define adequately long-interchange distances for two fluids by wrapping a tube containing a first fluid about the wall of an inner cylindrical tank, within a gap formed with a second concentric t...
07/17/2007
7225859Heat exchanger element and heat exchanger member for a stirling cycle refrigerator and method of manufacturing such a heat exchanger member
A heat exchanger element for a Stirling cycle refrigerator is produced by integrally forming an annular corrugate fin that is produced by forming a sheet material, corrugated so as to have a large number of grooves, into a cylindrical shape with the grooves parallel...
06/05/2007
7191824Tubular charge air cooler
A core for a charge air cooler comprises inner and outer concentric tubes providing an axially extending annular passageway for flow of a fluid, preferably a liquid coolant. A first inlet and a first outlet are provided at the ends of the axial annular passageway. A...
03/20/2007
7182104Collapsible duct
A duct for containing a cable and method for mounting the cable therein include providing the duct with a collapsible or flexible wall movable between a contracted condition for mounting the duct in a conduit and an extended condition of increased cross-sectional ar...
02/27/2007
7163053Heat exchanger
A method for adjusting temperature of a machining liquid, e.g., slurry, etching liquid, by passing the machining liquid through a heat exchanger. The heat exchanger, which adjusts the temperature of the machining liquid, includes a ceramic heat exchanging tube which...
01/16/2007
7150100Method of forming a jacketed steam distribution tube
A method of forming a jacketed steam distribution tube assembly includes simultaneously extruding an inner tube, an outer tube, and a plurality of connecting members for connecting the inner tube to the outer tube, thereby forming a jacketed steam distribution tube ...
12/19/2006
7143820Systems for improved heat exchanger
A system in which a heat exchanger includes a core, a plurality of fins extending outwardly from the core, and an element disposed within the cavity of the core. The heat exchanger also includes a first cap coupled to the first end of the core, and a second cap coup...
12/05/2006
7124507Method of manufacturing a heat pipe wick with structural enhancement
Heat pipe wick structure wherein a stout sheet of perforated material overlays a high performance wick material such as stainless steel felt affixed to a substrate. The inventive structure provides a good flow path for working fluid while maintaining durability and ...
10/24/2006
7111394Hybrid loop heat pipe
A heat pipe assembly (100) has a combined reservoir (102) and evaporator (104), the evaporator (104) having ducts of a vapor manifold (106) that exhausts vapor toward the condenser (108) instead of opposing the flow of liqui...
09/26/2006
7063132Multi-wall heat exchanger for a water heater
A water heater including a tank having a wall defining an interior for holding water is provided. A heat exchange assembly is positioned at least partially within the interior of the tank. The heat exchange assembly includes a metallic outer tube positioned within t...
06/20/2006
7063133Multi-wall heat exchanger for a water heater
A water heater including a tank having a wall defining an interior for holding water is provided. A heat exchange assembly is positioned at least partially within the interior of the tank. The heat exchange assembly has an outer tube extending within the interior of...
06/20/2006
7047639Method for manufacturing a heat-dissipating structure of a rectifier
A method for manufacturing a heat-dissipating structure of a rectifier combines heat pipes into the heat-dissipating structure of the rectifier to enhance the heat-dissipating efficiency thereof. A metal tube of a heat pipe is has an inlet. A wick structure is forme...
05/23/2006
6926069Method for manufacturing a double-walled heat exchanging tube with leak detection
Method for manufacturing a double-walled heat exchange tube with leak detection, wherein inner tube is slipped into an outer tube, after a surface profiling has been provided on at least the outer surface of the inner tube or the inner surface of the outer tube, and...
08/09/2005
6912785Flexible heat pipe structure and associated methods for dissipating heat in electronic apparatus
A notebook computer has a base housing with a heat-generating microprocessor therein, and a lid housing pivotally connected to the base housing. Operating heat from the microprocessor is transferred to the lid housing, for dissipation therefrom, via a specially desi...
07/05/2005
6735848Method of manufacturing a superconducting magnet
Method of manufacture a wide bore, high field superconducting magnet. The superconducting magnet has a plurality of superconducting coils impregnated with epoxy and nested within each other. An innermost one of the nested coils has a bore therethrough that defines a...
05/18/2004
6729009Method for connecting workpieces by cold forming
The invention relates to press tools for the connection, by cold forming, of tubular workpieces (2, 3) whose connection regions are provided with circular external cross-sectional shapes and are pushed one into the other. The press jaws (10) of the pre...
05/04/2004
6347453Assembly method for concentric foil regenerators
A method of assembling a regenerator comprising multiple concentric layers of foil, each with an unbonded joint inside a generally cylindrical space, by inserting each successive layer of foil into the remaining space inside said generally cylindrical spa...
02/19/2002
6192583Heat exchanger tube and method of manufacturing same
A heat exchanger tube is composed of a metal outer tube having an inner profile and a metal inner tube having an outer profile, wherein the profiles are in an undercut engagement with each other so that the inner and outer tubes are in rigid abutment and ...
02/27/2001
6082353Solar panel and method of manufacturing thereof
A method for forming a solar collector includes a panel provided with an inner bore and a deformable metal tube inserted in the bore and mechanically secured thereto by passing a plug or bullet through the tube to deform it outwardly into intimate contact...
07/04/2000
6082781Pipe connecting device
A pipe connector for connecting at least three pipelines has a main pipe that is continuous in a direction of flow of water. A connection piece branches off from the main pipe, and an inner pipe follows both the main pipe and the connection piece. The inn...
07/04/2000
5970611Method for processing a rotor used for a super charger
In a method for processing a rotor used for a supercharger and the like, a slanted rolling machine is used having rolls designed such that the rolls are arranged about a pass line along which a material to be molded advances. Each roll is of corn shape an...
10/26/1999
5898995Method of manufacture of a primary heat exchanger jacketed by a secondary heat exchanger
A composite heat exchanger has an inner, serpentine circuit fluidly isolated from a surrounding outer, parallel flow circuit, allowing two different heat exchange media to be in thermal contact without physical mixing. A series of longer, inner tubes are ...
05/04/1999
5815921Electronic package cooling system and heat sink with heat transfer assembly
A method for minimizing thermal overhead in an integrated circuit package is described. A heat sink having a base is integrally formed into the package. The base is connected to the die, and a portion of the heat sink projects from the package, forming a ...
10/06/1998
5799395Process for manufacturing an air gap-insulated exhaust pipe
An air gap-insulated exhaust pipe with a sliding fit between two inner pipe sections in a middle area of the length of the exhaust pipe has a radial mounting of the inner pipe in the outer pipe which is provided in the area of a bend or beyond the bend, w...
09/01/1998
5787933Method of obtaining a leakproof connection between a tube and a sleeve
A method of obtaining a leakproof connection between a metallic tube having a leak and a metallic sleeve extending over the leak, includes expanding the sleeve being formed of a material having given strength values against an inner wall surface of the tu...
08/04/1998
5715587Method of assembling double-containment piping assemblies
A double-containment piping assembly has two anchor supports, and at least one elbow fitting with an outer elbow section and an inner elbow section received within the inner elbow section. A first leg having a first inner pipe received within a first oute...
02/10/1998
5606792Hydraulic expander assembly and control system for sleeving heat exchanger tubes
A hydraulic expander assembly for installing a tube repair sleeve in a tube at a selected location relative to a tube defect or a tube support. The apparatus includes a hydraulic expander having at least one expandable bladder and adapted to receive the s...
03/04/1997
5575067Method of making a continuous ceramic fiber reinforced heat exchanger tube
A ceramic heat exchanger tube (1) includes a hollow ceramic outer tube (2) with a corrugated ceramic fiber inner member (8) housed within and secured to the outer tube defining one or more fluid passageways (14) therebetween. The corrugated inner member h...
11/19/1996
5461766Method for integrally packaging an integrated circuit with a heat transfer apparatus
A method for minimizing thermal overhead in an integrated circuit package is described. A heat sink having a base is integrally formed into the package. The base is connected to the die, and a portion of the heat sink projects from the package, forming a ...
10/31/1995
5410808Method of making a double wall twist tube
A double wall twist tube is formed from at least two tubular blanks with a smaller tubular blank forming the inner wall and a larger tubular blank forming the outer wall. The smaller tubular blank is located within the larger tubular blank and the tubular...
05/02/1995
5367768Methods of repairing inconel 600 nozzles of pressurized water reactor vessels
A method of repairing a tubular nozzle made of Inconel 600 material and extending through a bore in an external wall of a pressure vessel to provide communication with the interior of the vessel from externally thereof includes mechanically rolling the in...
11/29/1994
1    
 
Sign InRegister
Username  
Password   
forgot password?