Patents by Inventor Kostas F. Dockus

Kostas F. Dockus has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7735718
    Abstract: A brazing product for fluxless brazing comprises a substrate and a filler metal-forming composition applied to the substrate. The substrate preferably comprises aluminum, an aluminum alloy or another metal and may include at least one layer of a ceramic, carbide or nitride. The filler metal-forming composition comprises a liquid-forming layer comprising silicon and a braze-promoting layer comprising one or more metals selected from the group comprising nickel, cobalt, palladium and iron. The liquid-forming layer comprises one or more material layers. Where the liquid-forming layer comprises a plurality of layers, it may include at least one layer consisting essentially of silicon.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: June 15, 2010
    Assignee: Dana Canada Corporation
    Inventors: Michael E. Graham, Richard A. Hoffman, Margaret Anna Hoffman, legal representative, Brian E. Cheadle, Kostas F. Dockus, Stefanija Kisielius, legal representative, Robert H. Krueger
  • Publication number: 20100086802
    Abstract: A brazing product for fluxless brazing comprises a substrate and a filler metal-forming composition applied to the substrate. The substrate preferably comprises aluminum, an aluminum alloy or another metal and may include at least one layer of a ceramic, carbide or nitride. The filler metal-forming composition comprises a liquid-forming layer comprising silicon and a braze-promoting layer comprising one or more metals selected from the group comprising nickel, cobalt, palladium and iron. The liquid-forming layer comprises one or more material layers. Where the liquid-forming layer comprises a plurality of layers, it may include at least one layer consisting essentially of silicon.
    Type: Application
    Filed: December 2, 2009
    Publication date: April 8, 2010
    Inventors: Michael E. Graham, Richard A. Hoffman, Margaret Anna Hoffman, Brian E. Cheadle, Kostas F. Dockus, Stefanija Kisielius, Robert H. Krueger
  • Patent number: 7451906
    Abstract: A brazing product for low temperature fluxless brazing comprises a filler metal-forming composition which melts in the range from about 380-575° C. The filler metal-forming composition comprises zinc optionally in combination with aluminum and/or silicon, and further comprises at least one braze promoter selected from nickel, cobalt, iron and palladium. The filler metal-forming composition may comprise a single layer or may comprise a number of distinct layers. The brazing product may take the form of a brazing preform or a brazing sheet or casting in which the filler metal-forming composition is deposited on a non-consumable substrate. The substrate may preferably comprise aluminum or an aluminum alloy, but may instead be comprised of one or more metals other than aluminum.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: November 18, 2008
    Assignee: Dana Canada Corporation
    Inventors: Stefanija Kisielius, legal representative, Brian E. Cheadle, Robert H. Krueger, Feng Liang, Mark S. Kozdras, Kostas F. Dockus
  • Patent number: 7000823
    Abstract: A method of manufacturing an article of manufacture for use in a fluxless brazing process is disclosed. The method comprises the step of applying a braze-promoting layer including one or more metals selected from the group consisting of nickel, cobalt and iron, onto a bonding layer which comprises one or more metals selected from the group consisting of zinc, tin, lead, bismuth, nickel, antimony and thallium and which is disposed on a substrate including aluminum.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: February 21, 2006
    Assignee: Dana Canada Corporation
    Inventors: Kostas F. Dockus, Robert H. Krueger, Brian E. Cheadle, Mark S. Kozdras, Feng Liang
  • Patent number: 6913184
    Abstract: A family of low temperature brazing alloys wherein the alloy is utilized in the form of a filler metal or shim and consists of electroplated nickel on zinc shimstock, wherein the zinc shimstock includes zinc, aluminum and silicon, with or without a small amount of lead, tantalum or bismuth. The use of the brazing alloys for joining aluminum parts together or an aluminum part to a part of another metal, such as brass. Further, metallic coating could be thermally spray coated and powder metals could be utilized as the filler materials with equally acceptable brazing techniques. Using these techniques, the brazing could be accomplished at a temperature in the range of 750 to 1050° F.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: July 5, 2005
    Assignee: Dana Canada Corporation
    Inventors: Kostas F. Dockus, Brian E. Cheadle, Robert H. Krueger, Feng Liang, Mark S. Kozdras
  • Patent number: 6815086
    Abstract: A method of manufacturing an article of manufacture for use in a fluxless brazing process is disclosed. The method comprises the step of applying a braze-promoting layer including one or more metals selected from the group consisting of nickel, cobalt and iron, onto a bonding layer which comprises one or more metals selected from the group consisting of zinc, tin, lead, bismuth, nickel, antimony and thallium and which is disposed on a substrate including aluminum.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: November 9, 2004
    Assignee: Dana Canada Corporation
    Inventors: Kostas F. Dockus, Robert H. Krueger, Brian E. Cheadle, Mark S. Kozdras, Feng Liang
  • Publication number: 20040035911
    Abstract: A method of manufacturing an article of manufacture for use in a fluxless brazing process is disclosed. The method comprises the step of applying a braze-promoting layer including one or more metals selected from the group consisting of nickel, cobalt and iron, onto a bonding layer which comprises one or more metals selected from the group consisting of zinc, tin, lead, bismuth, nickel, antimony and thallium and which is disposed on a substrate including aluminum.
    Type: Application
    Filed: April 28, 2003
    Publication date: February 26, 2004
    Inventors: Kostas F. Dockus, Brian E. Cheadle, Robert H. Krueger, Feng Liang, Mark S. Kozdras
  • Publication number: 20040035910
    Abstract: A method of manufacturing an article of manufacture for use in a fluxless brazing process is disclosed. The method comprises the step of applying a braze-promoting layer including one or more metals selected from the group consisting of nickel, cobalt and iron, onto a bonding layer which comprises one or more metals selected from the group consisting of zinc, tin, lead, bismuth, nickel, antimony and thallium and which is disposed on a substrate including aluminum.
    Type: Application
    Filed: April 28, 2003
    Publication date: February 26, 2004
    Inventors: Kostas F. Dockus, Brian E. Cheadle, Robert H. Krueger, Feng Liang, Mark S. Kozdras
  • Publication number: 20040038070
    Abstract: A method of manufacturing an article of manufacture for use in a fluxless brazing process is disclosed. The method comprises the step of applying a braze-promoting layer including one or more metals selected from the group consisting of nickel, cobalt and iron, onto a bonding layer which comprises one or more metals selected from the group consisting of zinc, tin, lead, bismuth, nickel, antimony and thallium and which is disposed on a substrate including aluminum.
    Type: Application
    Filed: April 28, 2003
    Publication date: February 26, 2004
    Inventors: Kostas F. Dockus, Brian E. Cheadle, Robert H. Krueger, Feng Liang, Mark S. Kozdras
  • Publication number: 20030189082
    Abstract: A family of low temperature brazing alloys wherein the alloy is utilized in the form of a filler metal or shim and consists of electroplated nickel on zinc shimstock, wherein the zinc shimstock includes zinc, aluminum and silicon, with or without a small amount of lead, tantalum or bismuth. The use of the brazing alloys for the joining aluminum parts together or an aluminum part to a part of another metal, such as brass. Further, metallic coating could be thermally spray coated and powder metals could be utilized as the filler materials with equally acceptable brazing techniques. Using these techniques, the brazing could be accomplished at a temperature in the range of 750 to 1050° F.
    Type: Application
    Filed: November 21, 2002
    Publication date: October 9, 2003
    Inventors: Kostas F. Dockus, Brian E. Cheadle, Robert H. Krueger, Feng Liang, Mark S. Kozdras
  • Publication number: 20030155409
    Abstract: A method of manufacturing an article of manufacture for use in a fluxless brazing process is disclosed. The method comprises the step of applying a braze-promoting layer including one or more metals selected from the group consisting of nickel, cobalt and iron, onto a bonding layer which comprises one or more metals selected from the group consisting of zinc, tin, lead, bismuth, nickel, antimony and thallium and which is disposed on a substrate including aluminum.
    Type: Application
    Filed: November 21, 2002
    Publication date: August 21, 2003
    Inventors: Kostas F. Dockus, Robert H. Krueger, Brian E. Cheadle, Mark S. Kozdras, Feng Liang
  • Publication number: 20030098338
    Abstract: A method of manufacturing an article of manufacture for use in a fluxless brazing process is disclosed. The method comprises the step of applying a braze-promoting layer including one or more metals selected from the group consisting of nickel, cobalt and iron, onto a bonding layer which comprises one or more metals selected from the group consisting of zinc, tin, lead, bismuth, nickel, antimony and thallium and which is disposed on a substrate including aluminum.
    Type: Application
    Filed: November 21, 2001
    Publication date: May 29, 2003
    Inventors: Kostas F. Dockus, Robert H. Krueger, Brian E. Cheadle, Mark S. Kozdras, Feng Liang
  • Patent number: 4701127
    Abstract: A controlled environment capsule for fluxless brazing comprising an open-bottom box, an end-plate and a foil gasket sealing means. Diffusion plates are disposed within the interior of the box and connected to an external source of inert gas. The inert gas is uniformly distributed over the work piece, excluding air from the capsule and the work piece by being maintained at a positive pressure relative to the external environment.
    Type: Grant
    Filed: December 10, 1982
    Date of Patent: October 20, 1987
    Assignee: Borg-Warner Corporation
    Inventors: Kostas F. Dockus, John L. Zambrow
  • Patent number: 4602731
    Abstract: The direct liquid phase bonding of ceramics to metals or other ceramics in an inert atmosphere without prior metallization wherein a nickel-plated aluminum-silicon brazing alloy or aluminum or aluminum alloy filler material between the ceramic and metal layers provides a joint of high strength at a low bonding temperature without affecting the ceramic microstructure or the mechanical properties of the materials. This technique is also useful for fabricating composite laminates.
    Type: Grant
    Filed: December 24, 1984
    Date of Patent: July 29, 1986
    Assignee: Borg-Warner Corporation
    Inventor: Kostas F. Dockus
  • Patent number: 4388159
    Abstract: The surfaces of aluminum and aluminum alloy articles, when abraded with a low-density abrasive product in the presence of a lower alcohol such as isopropanol, are readily plated or coated to provide a uniform plating or coating. The process is particularly useful in providing aluminum-silicon brazing alloy with nickel or nickel-lead plating for brazing.
    Type: Grant
    Filed: May 18, 1981
    Date of Patent: June 14, 1983
    Assignee: Borg-Warner Corporation
    Inventors: Kostas F. Dockus, William D. Sproul
  • Patent number: 4028200
    Abstract: A method of plating cobalt-lead or nickel-lead alloys upon aluminum base articles. The plating baths comprise salts of the plating metals and have a pH of from 7-12. Both electroless and electroplating bath compositions are disclosed.
    Type: Grant
    Filed: May 3, 1976
    Date of Patent: June 7, 1977
    Assignee: Borg-Warner Corporation
    Inventor: Kostas F. Dockus
  • Patent number: 3970237
    Abstract: A method of brazing aluminum parts where the brazing occurs between one aluminum part and a second part formed of either aluminum or another metal, wherein the aluminum or aluminum alloy has a braze cladding which is plated with a bond-promoting alloy prior to the brazing operation. If an aluminum brazing foil is utilized between the parts, the bond-promoting metal is plated onto the brazing foil. The bond-promoting alloy includes nickel or cobalt with a small amount of lead added thereto, such that the nickel-lead or cobalt-lead may be used individually or in combination.
    Type: Grant
    Filed: June 24, 1975
    Date of Patent: July 20, 1976
    Assignee: Borg-Warner Corporation
    Inventor: Kostas F. Dockus