Patents by Inventor Norman A. Ehrlich

Norman A. Ehrlich 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).

  • Patent number: 4103504
    Abstract: The invention introduces a semi-rigid interface between a moving ice field and a stationary offshore platform. The invention employs a plurality of cables which extend from points located around the periphery of the platform above the ice-covered water to corresponding points on the submerged portion of the structure, forming a protective shield of evenly spaced cables around the structure. The cables may then be caused to vibrate at predetermined frequencies, thereby reducing the frictional forces of the ice against the structure and additionally including a self-destructive natural frequency in the surrounding ice field. A compressible bladder or filler is used between the cables and the structure to prevent ice buildup behind the cables.
    Type: Grant
    Filed: October 7, 1977
    Date of Patent: August 1, 1978
    Inventor: Norman A. Ehrlich