Patents by Inventor Gregory S. Messina

Gregory S. Messina 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).

  • Polymer pelletizing indexing system
    Patent number: 6217802
    Abstract: A polymer pelletizing apparatus includes a device for automatically and electronically indexing (advancing) a set of pelletizer knives by a predetermined distance upon the expiration of a predetermined time period. This advancement is continued for the useful life of the pelletizer knives and is called the advancement cycle. The predetermined distance and predetermined time period are entered into a PLC. The PLC is connected to an external advancing device such that when the PLC determines that the predetermined time period has expired, the PLC causes the external advancing device to index or advance the pelletizer knives by a predetermined distance. This advancement cycle provides consistent wear of the pelletizer knives and accurately provides an estimate of the need for a knife change.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: April 17, 2001
    Assignee: Pelletizer Knives, Inc.
    Inventors: Gregory S. Messina, Michael A. Tofte