Patents by Inventor Friedrich Renk

Friedrich Renk 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).

  • Tensioning device for tensioning of hydraulic hoses on telescopic lift mast assemblies
    Patent number: 4244449
    Abstract: Tensioning device for tensioning of hydraulic flexible tubes on telescopic lift mast assemblies of fork lift trucks with the flexible tubes being turned-around over a pulley which is rotatably mounted on the stationary outer upright and an additional pulley which is rotatably mounted on the sliding inner upright. A holder is engaged by a spring, the holder being guided on the stationary outer upright in a guide, the holder carrying a rotatable pulley.
    Type: Grant
    Filed: March 21, 1979
    Date of Patent: January 13, 1981
    Assignee: O & K Orenstein & Koppel Aktiengesellschaft
    Inventors: Friedrich Renk, Jurgen Handel