Patents by Inventor Gerd Westerdorff

Gerd Westerdorff 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).

  • Concrete crosstie with recesses and method for the production thereof
    Patent number: 4634049
    Abstract: A concrete crosstie has a recess for holding a rail securing member engaging beneath a nose in the recess. Upper ends holding the rail down resiliently are loop-shaped, to obtain a low surface pressure at two spaced areas and exact positioning of the rail securing member in the recess. The greatest possible crosstie cross-section is retained in that the recess only partially penetrates the concrete crosstie. The nose lower and side faces and the rail foot support surface are formed by steel reinforcements connected to the concrete.
    Type: Grant
    Filed: March 11, 1985
    Date of Patent: January 6, 1987
    Assignee: Hoesch Aktiengesellschaft
    Inventors: Horst E. Steinfeld, Gerd Westerdorff