Patents by Inventor James B. Wulf

James B. Wulf 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).

  • Cryogenic rectification system with dual phase turboexpansion
    Patent number: 5564290
    Abstract: A cryogenic rectification system for producing elevated pressure gaseous oxygen wherein pressurized liquid oxygen is vaporized against pressurized working fluid which is then turboexpanded to form a dual phase stream having both vapor and liquid fractions.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: October 15, 1996
    Assignee: Praxair Technology, Inc.
    Inventors: Dante P. Bonaquist, John H. Ziemer, Cheryl A. Engels, James B. Wulf, Robert A. Beddome
  • Integration of combustor-turbine units and integral-gear pressure processors
    Patent number: 5485719
    Abstract: A method and system for supplying compressed air to a process plant using a combustor-turbine unit directly coupled to a bull gear meshing with pinions on which are mounted gas compression stages and expansion stages. Some stages compress a stream of air supplied to the combustor-turbine unit for combustion and to the process plant. Other stages expand or compress other gas streams directed to the combustor-turbine unit or to external applications. Direct energy transfers and intercooling and aftercooling after compression stages enhance the efficiency of the system.
    Type: Grant
    Filed: September 20, 1994
    Date of Patent: January 23, 1996
    Assignee: Praxair Technology, Inc.
    Inventor: James B. Wulf
  • Integration of combustor-turbine units and integral-gear pressure processors
    Patent number: 5402631
    Abstract: A method and system for supplying compressed air to a process plant using a combustor-turbine unit directly coupled to a bull gear meshing with pinions on which are mounted gas compression stages and expansion stages. Some stages compress a stream of air supplied to the combustor-turbine unit for combustion and to the process plant. Other stages expand or compress other gas streams directed to the combustor-turbine unit or to external applications. Direct energy transfers and intercooling and aftercooling after compression stages enhance the efficiency of the system.
    Type: Grant
    Filed: March 12, 1993
    Date of Patent: April 4, 1995
    Assignee: Praxair Technology, Inc.
    Inventor: James B. Wulf
  • Radial turbine nozzle vane
    Patent number: 5299909
    Abstract: A radial inflow turbine having a radial nozzle assembly comprising a plurality of vanes, wherein downstream of the throat, the vane suction surfaces, relative to a radius of the circle on which the vane trailing edges lie, have a specified range of angles, or decreasing radii of curvature.
    Type: Grant
    Filed: March 25, 1993
    Date of Patent: April 5, 1994
    Assignee: Praxair Technology, Inc.
    Inventor: James B. Wulf
  • High efficiency turboexpander
    Patent number: 5046919
    Abstract: A turboexpander with improved efficiency wherein fluid is introduced into the rotatable assembly at a negative incidence angle and expanded within the rotatable assembly along a pressure balanced flow path.
    Type: Grant
    Filed: July 27, 1990
    Date of Patent: September 10, 1991
    Assignee: Union Carbide Industrial Gases Technology Corporation
    Inventor: James B. Wulf
  • Centrifugal compressor having hybrid diffuser and excess area diffusing volute
    Patent number: 4900225
    Abstract: A centrifugal compressor having a two section diffuser which has a tapered section having a constant diffusing area along its radial length, and a straight section having an increasing diffusing area along its radial length, and a diffusing volute having a throat area significantly larger than conventional designs.
    Type: Grant
    Filed: March 8, 1989
    Date of Patent: February 13, 1990
    Assignee: Union Carbide Corporation
    Inventors: James B. Wulf, Timothy D. Craig, Alfred P. Evans, Ross H. Sentz