Patents by Inventor Mark A. Calderazzo

Mark A. Calderazzo 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).

  • Segmented blow pin for molding machines employing replaceable cutting ring
    Patent number: 4631020
    Abstract: A blow pin for molding machines includes first and second separate members juxtaposed adjacent to each other, with a replaceable cutting member positioned between the first and second members and with a shoulder-fastener arrangement associated with the blow tube for holding the first and second members together with the cutting member therebetween.
    Type: Grant
    Filed: November 14, 1985
    Date of Patent: December 23, 1986
    Assignee: Sewell Plastics, Inc.
    Inventors: Robert E. Frankenberg, Mark A. Calderazzo