Patents Represented by Attorney Ralph H. Dougherty, P.A.
  • Patent number: 5674308
    Abstract: A method and apparatus for producing direct reduced iron from iron oxide fines. The iron oxide raw material are passed through a pre-heater having a spouted port then to a primary spouted bed circulating fluidizing bed reactor and then to a bubbling fluidizing bed reactor. The reaction of the strong reducing gas mixture, through this series of beds allows intimate contact between the fines and small particles with the reducing gas to facilitate the direct reduction of the iron oxide fines to metallized iron.
    Type: Grant
    Filed: September 13, 1995
    Date of Patent: October 7, 1997
    Assignee: Midrex International B.V. Rotterdam, Zurich Branch
    Inventors: David C. Meissner, Kimio Sugiyama, Isao Kobiyashi, Kenji Ohiraki, Shintaro Ano
  • Patent number: 5542467
    Abstract: An annular heat exchanger for incompatible fluids, such as reactive compounds, particularly for the aeronautics industry, in which a sealed bottle is fixed interior of a hollow body, with integral heat dissipators and novel fluid passageway orientation, whereby no leak can occur which would commingle the incompatible fluids.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: August 6, 1996
    Assignee: Societe e'Etudes et de Constructions Aero-Navales
    Inventor: Pierre Carpentier
  • Patent number: 5540636
    Abstract: A junction ball for connecting two passageways in a modular playground at any desired angle utilizing two rotatably interlocking hollow half spheres having one access port each. The halves are adapted to be fitted together, rotated to produce the proper angle, and locked into place. A single half may be used for terminating a passageway in conjunction with a viewing dome. The modular half spheres are preferably molded in one piece from plastic. The spherical view port is preferably constructed from polycarbonate. These components are supported by and mounted into a standard pipe structure consisting of pipe and assorted clamps.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: July 30, 1996
    Assignee: Soft Play, Inc.
    Inventor: Russell W. Hellen
  • Patent number: D374051
    Type: Grant
    Filed: June 26, 1995
    Date of Patent: September 24, 1996
    Assignee: Devant Ltd.
    Inventor: James M. Sheppard, Jr.
  • Patent number: D376405
    Type: Grant
    Filed: August 17, 1995
    Date of Patent: December 10, 1996
    Assignee: Soft Play, Inc.
    Inventors: Grant M. Strawcutter, James O. Dunn, Jr., Jonathan E. Brooks
  • Patent number: D377196
    Type: Grant
    Filed: November 3, 1995
    Date of Patent: January 7, 1997
    Assignee: Devant Ltd.
    Inventor: James M. Sheppard, Jr.