Search Patents
  • Heat transfer tubes and methods of fabrication thereof
    Patent number: 5697430
    Abstract: Metallic tubes (10,10') for boiling have an outer surface (12) for contacting a refrigerant and an inner surface (14) for contacting a liquid heat transfer medium to be chilled. The outer surface (12) has a plurality of radially outwardly extending helical fins (18); the tube inner surface (14) has a plurality of helical ridges (16). The fins (18) of the outer surface are notched to provide nucleate boiling cavities having pores (30). The fins (18) and notches (N) are so spaced that the pores (30) have an average area less than 0.00009 square inches and a pore density of at least 2000 per square inch on the tube outer surface. The helical ridges (16) on the inner surface have a predetermined ridge height and pitch and are positioned at a predetermined helix angle, the inner surface having a severity factor .PHI. in the range of 0.006 to 0.008.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 16, 1997
    Assignee: Wolverine Tube, Inc.
    Inventors: Petur Thors, Norman R. Clevinger, Bonnie J. Campbell, James T. Tyler
  • Method of Manufacturing a Tube
    Publication number: 20080116599
    Abstract: A method of manufacturing a tube (8) is disclosed. The method comprises forming a tube (8) by extrusion, causing a body (24) to move longitudinally relative to the internal bore of the tube (8), and determining whether the body (24) ceases to move relative to the tube (8) At least part of said extrusion step and said step of causing a body (24) to move relative to the internal bore of the tube (8) are carried out simultaneously, and the body (24) is caused to move relative to the internal bore of the tube (8) by means of at least one first tensile element (22) attached to said body (24).
    Type: Application
    Filed: May 26, 2005
    Publication date: May 22, 2008
    Applicant: EMTELLE UK LIMITED
    Inventor: George Henry Platt Brown
  • Method and apparatus for a molded tube and peristaltic pump
    Publication number: 20050158196
    Abstract: A peristaltic pump (10) and tube (18) system are provided. The peristaltic pump (10) operates to squeeze the tube (18) and push liquid in the tube (18) in the desired direction. The tube (18) is molded, and thus allows for predictable and consistent flow rates.
    Type: Application
    Filed: January 16, 2004
    Publication date: July 21, 2005
    Inventors: Alfred Schroeder, Michael Romanyszyn
  • Method and apparatus for a molded tube and peristaltic pump
    Publication number: 20060153691
    Abstract: A peristaltic pump (10) and tube (18) system are provided. The peristaltic pump (10) operates to squeeze the tube (18) and push liquid in the tube (18) in the desired direction. The tube (18) is molded, and thus allows for predictable and consistent flow rates.
    Type: Application
    Filed: March 13, 2006
    Publication date: July 13, 2006
    Inventors: Alfred Schroeder, Michael Romanyszyn
  • HEAT EXCHANGER COMPRISING A CORE OF TUBES
    Publication number: 20170045312
    Abstract: The invention concerns a heat exchanger (1) comprising an inlet tank (2), having a fluid inlet (4),and an outlet tank (3), having a fluid outlet (5),and a core (6) of tubes (7, 8) joining said inlet tank (2) and said outlet tank (3) together and creating a plurality of fluid flow paths (P1) from said inlet tank (2) to said outlet tank (3), wherein said tubes (7, 8) belong to a primary and a secondary group of tubes(7, 8). According to the invention said inlet tank (2) and said outlet tank (3) have header plates(9, 10), which form core interfaces and comprise throughout identical tube insertion orifices for both the primary group of tubes (7) and the secondary group of tubes (8).Further, the tubes being a member of the primary group are base tubes (7)and the tubes being a member of the secondary group are adaptation tubes (8), which differ from the base tubes (7) and a reused to locally change properties of the heat exchanger (1) in critical areas of the heat exchanger (1).
    Type: Application
    Filed: April 20, 2015
    Publication date: February 16, 2017
    Applicant: TITANX ENGINE COOLING HOLDING AB
    Inventors: Arnaud Contet, Anders Brorsson, Fredrik Lomnitz
  • Tube base notcher
    Patent number: 5231862
    Abstract: A base (10) and the method for fabricating the corners (32) of the base (10) of a piece of furniture (12) from tubing (18) by notching the tube (18). The notching removes a metal from the tube (18) along the first pair of extremities (40) converging to an apex (44), and along a second pair of transverse extremities (52). Additional material is removed from the spaces (38) by removing a plug from the tube (18) adjacent the apex (44) in the shape of a bowl having two parallel sides (56), a third side (58) perpendicular thereto and a point (44). The tube (18) is folded at each point (44) creating corners (32) in the tube (18) each with a space (38) and an enlarged relief space (46) therebetween to allow fluids used in the post-fabrication operations, i.e., washing and painting, to flow quickly therefrom thus increasing drying times. The gussets (62) are welded to the tube (18) to add strength to the base (10).
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: August 3, 1993
    Assignee: Meridian, Incorporated
    Inventor: Richard F. Ashley
  • Refrigerator and neck tube arrangement for cryostatic vessel
    Publication number: 20040194473
    Abstract: A cryogenic chamber comprising an outer vacuum vessel (9), an inner cryogen vessel (11), a turret (40) housing a neck tube (8) itself providing external access to the inner cryogen vessel (11), and a pulse tube refrigerator (20) itself comprising at least one pulse tube and at least one regenerator tube. The pulse tube refrigerator is located within a vacuum contained between the outer vacuum vessel (9) and the inner cryogen vessel (11) and the pulse tube refrigerator (20) and the neck tube (8) share a single turret (40). The cooling stage(s) (6, 7) of the pulse tube refrigerator (20) is/are rigidly mechanically connected to the neck tube (8) by highly conductive thermal links. The pulse tube(s) and regenerator tube(s) are displaced away from the neck tube and from each other.
    Type: Application
    Filed: November 19, 2003
    Publication date: October 7, 2004
    Inventor: Peter Derek Daniels
  • Tube base notcher
    Patent number: 5152594
    Abstract: A base (10) and the method for fabricating the corners (32) of the base (10) of a piece of furniture (12) from tubing (18 ) by notching the tube (18). The notching removes a metal from the tube (18) along the first pair of extremities (40) converging to an apex (44), and along a second pair of transverse extremities (52). Additional material is removed from the space (32) by removing a plug from the tube (18) adjacent the apex (44) in the shape of a bowl having two parallel sides (56), a third side (58) perpendicular thereto and a point (44). The tube (18) is folded at each point (44) creating corners (32) and an enlarged relief space (46) therebetween to allow fluids used in the post-fabrication operations, i.e., washing and painting, to flow quickly therefrom thus increasing drying times. The gussets (52) are welded to the tube (18) to add strength to the base (10).
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: October 6, 1992
    Assignee: Meridian Incorporated
    Inventor: Richard F. Ashley
  • Wheel suspension type front fork and manufacturing method of sliding tube thereof
    Patent number: 5398954
    Abstract: A wheel suspension type front fork has a structure capable of being manufactured without a metal mold and cutting work. An inner tube 18 is disposed to a sliding tube 13 to form a dual-tube structure. A receiving plate 19 is supported by an upper end of the inner tube 18 and an axle receiver 25 of the sliding tube 13 is reinforced by a lower end of the inner tube 18.
    Type: Grant
    Filed: July 15, 1993
    Date of Patent: March 21, 1995
    Assignee: SR Suntour Inc.
    Inventor: Yoshiya Chonan
  • Refrigerator and neck tube arrangement for cryostatic vessel
    Patent number: 7140190
    Abstract: A cryogenic chamber comprising an outer vacuum vessel (9), an inner cryogen vessel (11), a turret (40) housing a neck tube (8) itself providing external access to the inner cryogen vessel (11), and a pulse tube refrigerator (20) itself comprising at least one pulse tube and at least one regenerator tube. The pulse tube refrigerator is located within a vacuum contained between the outer vacuum vessel (9) and the inner cryogen vessel (11) and the pulse tube refrigerator (20) and the neck tube (8) share a single turret (40). The cooling stage(s) (6, 7) of the pulse tube refrigerator (20) is/are rigidly mechanically connected to the neck tube (8) by highly conductive thermal links. The pulse tube(s) and regenerator tube(s) are displaced away from the neck tube and from each other.
    Type: Grant
    Filed: November 19, 2003
    Date of Patent: November 28, 2006
    Assignee: Oxford Magnet Technology Ltd.
    Inventor: Peter Derek Daniels
  • Device for lining a peripheral tube of a steam generator
    Patent number: 4922605
    Abstract: A liner (12) substantially smaller than the thickness of the tube plate (2) is inserted into the tube (8) so that, while one of its ends is in a region of the tube (8) inside the tube plate (2) and away from the entry face (2a), the other end of the liner (12) is beyond the exit face (2b) of the tube plate. Diametral expansion and roller expanding of the liner (12) are performed in the position which the latter occupies inside the tube (8).
    Type: Grant
    Filed: November 28, 1988
    Date of Patent: May 8, 1990
    Assignee: Framatone
    Inventors: Jean P. Cartry, Bruno Fraissenet
  • Process for lining a peripheral tube of a steam generator
    Patent number: 4827594
    Abstract: A liner (12) substantially smaller than the thickness of the tube plate (2) is inserted into the tube (8) so that, while one of its ends is in a region of the tube (8) inside the tube plate (2) and away from the entry face (2a), the other end of the liner (12) is beyond the exit face (2b) of the tube plate. Diametral expansion and roller expanding of the liner (12) are performed in the position which the latter occupies inside the tube (8).
    Type: Grant
    Filed: April 30, 1987
    Date of Patent: May 9, 1989
    Assignee: Framatome
    Inventors: Jean P. Cartry, Bruno Fraissenet
  • Thermoelastic connection of the injector tube and the flame tube of a gas turbine
    Patent number: 5419114
    Abstract: The present invention pertains to a thermoelastic connection of a hot gas-carrying injector tube (8) to the flame tube (1) suspended in the combustion chamber housing (10) of a gas turbine. The injector tube (8) is connected by corrugated spacers (7) to a circumferential intermediate ring (6), which is attached to the lower flange of the flame tube (1) by detachable fastening elements (3, 4, 5). A circumferential cooling channel (annular space 15), into which cooling air is admitted, is formed between the cone of the injector tube (8) and the intermediate ring (6). The compressor air enters the combustion space (1, 8) of the combustion chamber (10) through the annular space (15) from below, as well as through the holes (11), especially through the circumferential gap (12).
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: May 30, 1995
    Assignee: MAN Gutehoffnungshutte AG
    Inventors: Kurt Bauermeister, Emil Aschenbruck, Klaus D. Mohr, Alain Moreau, Michel Guillaux
  • Compressed gas aerosol spray system with a dip tube vapor tap hole
    Patent number: 5143288
    Abstract: Apparatus and method for using a compressed gas in an aerosol spray system to produce and maintain an effective aerosol spray includes the use of an aerosol spray valve 4 for emitting the aerosol spray. A dip tube 18 is coupled to the valve 4 and extends into the spray system. The tube 18 has an upper portion which is substantially airtight above an initial liquid level 14. A lower portion of the dip tube 18 extends below the initial liquid level 14 and has a liquid entrance hole 24 substantially at the bottom thereof. A vapor tap hole 26 is provided in the dip tube 18 above the liquid entrance hole 24 and below the initial liquid level 14. The vapor tap hole 26 allows compressed gas 16 to enter the tube 18 and mix with the liquid 20 therein when the liquid level 28 has fallen below the vapor tap hole.
    Type: Grant
    Filed: February 14, 1991
    Date of Patent: September 1, 1992
    Assignee: S. C. Johnson & Son, Inc.
    Inventors: Karl A. Kohler, Frank M. Bado, Richard E. Krueger
  • Portable burner for fuel gas with two mixer tubes
    Patent number: 5213494
    Abstract: A portable burner (1) has a first (6) and a second mixer tube (18) for the delivery of primary and secondary air. To the first mixer tube belong an injector nozzle (2) for fuel gas and a spin producer (10). This first mixer tube (6) leads concentrically into the second mixer tube (18) larger in diameter, which has an inlet end (19) for the burner flame and aspiration points (20) for the secondary air. For the achievement of a thorough mixing of hot and cold gases and a low mixing temperature, between the outlet end (13) of the first mixer tube (6) and the inlet end (19) of the second mixer tube (18) there is disposed a filler body (16) filling the radial distance between the two tube ends and having a radial end face (21) from which the outlet end (13) of the first mixer tube (6) protrudes by a given amount "s." The aspiration points (20) for the secondary air are disposed exclusively in the area of the outlet end (13) of the first mixer tube (6) and aimed radially at the nozzle axis (A--A).
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: May 25, 1993
    Assignee: Rothenberger Werkzeuge-Maschinen GmbH
    Inventor: Palle L. Jeppesen
  • DIELECTRIC BARRIER DISCHARGE LAMP CONFIGURED AS A COAXIAL DOUBLE TUBE HAVING A GETTER
    Publication number: 20110101858
    Abstract: A dielectric barrier discharge lamp (1) configured as a coaxial double tube comprises an inner tube (3), which is disposed coaxially inside an outer tube (2). The inner tube (3) comprises an inner electrode tube (8) provided for receiving the inner electrode (7) and a getter tube (10) provided for receiving getter material (9). The inner electrode tube (8) and getter tube (10) are separated from each other in a gastight manner by a partition (11).
    Type: Application
    Filed: July 15, 2008
    Publication date: May 5, 2011
    Applicant: OSRAM Gesellschaft mit beschrankter Haftung
    Inventors: Axel Hombach, Oliver Rosier
  • X-Ray Tube Backscatter Suppression
    Publication number: 20220130632
    Abstract: Electrons can rebound from an x-ray tube target, causing electrical-charge build-up on an inside of the x-ray tube. The charge build-up can increase voltage gradients inside of the x-ray tube, resulting in arcing failure of the x-ray tube. Also, the electrical charge can build unevenly on internal walls of the x-ray tube, causing an undesirable shift of the electron-beam. An x-ray tube (10 or 20) with multiple protrusions (19) on an interior wall of a drift-tube (18) can reduce this electrical-charge build-up. The protrusions (19) can reflect stray electrons back to the anode target (14), thus suppressing backscatter. Each protrusion (19) can have a peak (19p) extending into the hole (18h), and receding to a base (19b) farther from the electron-beam, on an entry-side (19en) nearest the drift-tube-entry (18en) and on an exit-side (19en) nearest the drift-tube-exit (18ex).
    Type: Application
    Filed: September 23, 2021
    Publication date: April 28, 2022
    Inventor: Kasey Otho Greenland
  • X-RAY TUBE ENERGY-ABSORBING APPARATUS
    Publication number: 20050069087
    Abstract: An energy-absorbing device (78) for an imaging tube (18) includes an energy-absorbing body (82). The energy-absorbing body (82) is fluidically coupled to a housing (60) of the imaging tube (18) and absorbs the kinetic energy generated within the imaging tube (18). The kinetic energy may be generated from the separation of material fragments from a rotating target (74) within the housing (60).
    Type: Application
    Filed: September 25, 2003
    Publication date: March 31, 2005
    Applicant: GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY, LLC
    Inventor: Charles Kendall
  • Device for fixing in a fluid tight manner a through tube in a dome-shaped wall of a component of a nuclear reactor
    Patent number: 5700988
    Abstract: The through tubes (8) are a shrink-fit in through openings in the dome-shaped wall (2). One end (8a) of the tubes which projects from the convex surface of the wall (2) is closed in a fluidtight manner and a wall (18) carrying an electron gun (19) is mounted and fixed in a fluidtight manner on the dome-shaped wall (2) so as to define a fluidtight chamber (24). A low pressure is created in the fluidtight chamber (24) and the electron beam firing axis (19a) of the electron gun (19) is directed along a generatrix of the joint region between a through tube (8) and a through opening in the dome-shaped wall (2). The joint region is scanned by the electron beam by displacing the electron gun (19) in rotation about the axis of the through tube (8). The invention is in particular applicable to the welding of through adapters (8) of a vessel cover (2) of a pressurized water nuclear reactor.
    Type: Grant
    Filed: August 4, 1995
    Date of Patent: December 23, 1997
    Assignee: Framatome
    Inventor: Yves Fournier
  • X-ray tube backscatter suppression
    Patent number: 11728122
    Abstract: Electrons can rebound from an x-ray tube target, causing electrical-charge build-up on an inside of the x-ray tube. The charge build-up can increase voltage gradients inside of the x-ray tube, resulting in arcing failure of the x-ray tube. Also, the electrical charge can build unevenly on internal walls of the x-ray tube, causing an undesirable shift of the electron-beam. An x-ray tube (10 or 20) with multiple protrusions (19) on an interior wall of a drift-tube (18) can reduce this electrical-charge build-up. The protrusions (19) can reflect stray electrons back to the anode target (14), thus suppressing backscatter. Each protrusion (19) can have a peak (19p) extending into the hole (18h), and receding to a base (19b) farther from the electron-beam, on an entry-side (19en) nearest the drift-tube-entry (18en) and on an exit-side (19ex) nearest the drift-tube-exit (18ex).
    Type: Grant
    Filed: September 23, 2021
    Date of Patent: August 15, 2023
    Assignee: Moxtek, Inc.
    Inventor: Kasey Otho Greenland
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