Patents by Inventor Dennis D. Seifert

Dennis D. Seifert 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).

  • Retainer apparatus for releasably securing a bowl liner in a rock crusher
    Patent number: 4611766
    Abstract: Retainer apparatus for releasably securing a generally frusto-conical bowl liner to the bonnet of a rock crusher wherein the generally radially extending loops on the outer surface of the bowl liner are equipped with an upper surface having a curvature extending perpendicular to a radial plane and wherein wedge means includes a wedge and a contoured element having one planar longitudinally extending surface and one arcuate longitudinally extending surface whereby the wedge can be inserted from either side of the loop while still obtaining full surface bearing.
    Type: Grant
    Filed: June 26, 1985
    Date of Patent: September 16, 1986
    Assignee: Esco Corporation
    Inventor: Dennis D. Seifert