Patents by Inventor Gunter Brockmann

Gunter Brockmann 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).

  • Method of and apparatus for applying a sprayed concrete layer to a surface
    Patent number: 4824022
    Abstract: The apparatus for applying a sprayed concrete layer to a surface comprises a concrete feed pipe for a pumpable and sprayable concrete mixture made with water, a sprayer and a compressed air feed device for compressed air under a pressure of several bar from a compressed air source. The concrete feed pipe opens into the sprayer which has a compressed air connector device. The concrete mixture is sprayable with the compressed air. The compressed air feed device comprises a register including several compressed air chambers which connect to and open into the compressed air connector device. The individual compressed air chambers are connected with the help of control valves in alternating sequence to a power silo for loading a powdery concrete additive, particularly silica powder, or for blowing through a compressed air partial flow.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: April 25, 1989
    Assignee: Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann
    Inventors: Bernd Hillemeier, Gunter Brockmann, Richard Pohl
  • Method and apparatus for the spray placing of concrete layers
    Patent number: 4804563
    Abstract: A spray concrete composition which is sprayed with driving-air pressure has its setting time accelerated by incorporation in the driving air of amorphous silica dust having an inner surface (specific surface area) of at least 25 m.sup.2 /g.
    Type: Grant
    Filed: February 12, 1987
    Date of Patent: February 14, 1989
    Assignee: Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann
    Inventors: Bernd Hillemeier, Gunter Brockmann, Richard Pohl