Patents by Inventor John Anthony Sullivan

John Anthony Sullivan 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: 7192024
    Abstract: A feed mechanism feeds sheet material sequentially on demand to a take-up mechanism of processing machinery. The feed mechanism has a feed table with a gate. Sheets may be stacked against the gate, which allows only the lowermost sheet to pass therebeneath. Rollers within the surface of the table are rotatably driven to advance the lowermost sheet beneath the gate to the take-up mechanism. A restraining device prevents freewheeling over run of the rollers. The sheets may be longer in length than the circumference of a tool-carrying roll set used to process the sheet. The difference is accommodated by transferring sheet feed through the nip between the tool set and a separate servo-controlled drive upstream of the nip.
    Type: Grant
    Filed: October 25, 2004
    Date of Patent: March 20, 2007
    Inventor: John Anthony Sullivan
  • Patent number: 6829969
    Abstract: A feed mechanism sheet material sequentially on demand to a take-up mechanism of processing machinery. The feed mechanism has a feed table with a gate. Sheets may be stacked against the gate, which allows only the lowermost sheet to pass therebeneath. Rollers within the surface of the rotatably driven to advance the lowermost sheet beneath the gate to the take-up mechanism. A restraining device prevents freewheeling over run of the rollers. The sheets may be longer in length than the circumference of a tool-carrying roll set used to process the sheet. The difference is accommodated by transferring sheet feed through the nip between the tool set and a separate servo-controlled drive upstream of the nip.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: December 14, 2004
    Inventor: John Anthony Sullivan
  • Publication number: 20020180113
    Abstract: A rotary die-cutting machine and a method of cutting die-blanks in which the blanks (B) are passed between a die-cylinder (10) and an anvil (12), wherein a static charge is developed on the anvil (12) so that trim (15) removed from the blank adheres to, and is carried away from the nip, by the anvil (12).
    Type: Application
    Filed: May 29, 2002
    Publication date: December 5, 2002
    Inventor: John Anthony Sullivan