Patents by Inventor Michael D. Stoltzman

Michael D. Stoltzman 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: 4893861
    Abstract: A drum lifter ring formed as a one-piece molded synthetic resin ring having a plurality of rows of radially outwardly opening recesses in a midportion thereof, a rigid top wall projecting radially outwardly to beyond the outer surface of the midportion, and a rigid bottom wall projecting radially inwardly beyond the inner surface of the midportion. The bottom wall is provided with a plurality of downwardly opening recesses. The top wall defines a downwardly opening annular recess adjacent the outer surface of the ring midportion. In the illustrated embodiment, the radially outwardly opening recesses in the midportion are provided in a plurality of vertically spaced rows, with the recesses of the respective rows vertically aligned.
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: January 16, 1990
    Assignee: International Precision Components Corporation
    Inventor: Michael D. Stoltzman