Patents by Inventor Thomas D. Bloomfield

Thomas D. Bloomfield 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).

  • Driving pipe and method for the construction of an essentially horizontal pipeline
    Patent number: 6561732
    Abstract: A driving pipe and method for the construction of an essentially horizontal pipeline, whose wall is made at least primarily of concrete polymer. At least sections of the wall of the concrete polymer pipe are made of a liquid-permeable filter material consisting of polymer-bound, gravel-like particles.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: May 13, 2003
    Assignee: Meyer Rohr & Schacht GmbH
    Inventors: Thomas D. Bloomfield, Michael Welzel
  • Well pipe
    Patent number: 6352108
    Abstract: The invention is a well pipe with longitudinal rods arranged in intervals in the pipe wall over the whole circumference. It is characterized by the fact that the well pipe is made of polymer concrete, and of an additional layer of packed gravel functioning as a filter if designed as a well filter pipe, and that the rods are glass fiber rods which transfer axial tensile load.
    Type: Grant
    Filed: November 9, 1999
    Date of Patent: March 5, 2002
    Assignee: Rheinbraun Aktiengesellschaft
    Inventors: Wilhelm Meyer, Thomas D. Bloomfield, Willi Keul