Patents by Inventor Ernst F. Ischebeck

Ernst F. Ischebeck 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).

  • Indicator-nut threaded coupling with load-indicating device adapted to be arranged on anchors, in particular grouted anchors for mining or the like
    Patent number: 5088866
    Abstract: A indicating-nut threaded coupling with load-indicating device (1) adapted to be arranged in particular on grouted anchors for mining or the like and in order to obtain a simple solution which is advantageous in use a free space is formed by at least one groove (4) equipped with a fold bottom (5), the groove being arranged in the outer wall (3) of a bushing (2) which extends spaced from the outer surface of the anchor.
    Type: Grant
    Filed: February 14, 1991
    Date of Patent: February 18, 1992
    Assignee: Friedr. Ischebeck GmbH
    Inventors: Ernst F. Ischebeck, Joachim Isenberg