Patents by Inventor Rudolf Bartoszek

Rudolf Bartoszek 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 and an apparatus for providing a grouted anchorage against hydrostatic pressure
    Patent number: 4253781
    Abstract: A method is disclosed of providing a grouted anchorage in a base formation. A tube having a drill member at its forward end is driven into the base formation through an opening in a wall. An anchor rod is introduced once the desired depth has been reached, liquid mortar is forced through the tube to the forward end of the tube and the tube is withdrawn from the hole. The forward end of the tube is continuously kept closed, sealed from penetration by water. During the initial withdrawal of the tube a corresponding amount of liquid mortar is forced therethrough, the anchor rod being pressed against the drill tip which remains in the base formation.
    Type: Grant
    Filed: March 8, 1979
    Date of Patent: March 3, 1981
    Assignee: Philipp Holzmann Aktiengesellschaft
    Inventors: Joachim Fischer, Siegfried Brandl, Rudolf Bartoszek