Patents by Inventor Richard Davitt

Richard Davitt 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).

  • Film side sealing apparatus with closed-loop temperature control of a heater
    Patent number: 7281362
    Abstract: A side sealing apparatus for a shrink packaging machine comprising closed loop temperature control of a heater for maintaining an optimum temperature for cutting and sealing two layers of thermoplastic film. The heater comprises a cable or cartridge heater with an internal thermocouple, and it is connected to an automatic temperature controller. The heater is mounted on the side sealer apparatus between two sets of top and bottom V-belts mounted around drive rolls and idler rolls. The V-belts provide nip pressure against the film in order to drive the film. Nip pressure is generated by nip rolls on the scrap side of the film, and by belt support plates on the package side of the film.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: October 16, 2007
    Assignee: Shrink Packaging Systems Corporation
    Inventors: Frank A. James, Jeffrey C. Lindberg, Charles Manfredi, Richard Davitt
  • Film side sealing apparatus with closed-loop temperature control of a heater
    Patent number: RE43033
    Abstract: A side sealing apparatus for a shrink packaging machine comprising closed loop temperature control of a heater for maintaining an optimum temperature for cutting and sealing two layers of thermoplastic film. The heater comprises a cable or cartridge heater with an internal thermocouple, and it is connected to an automatic temperature controller. The heater is mounted on the side sealer apparatus between two sets of top and bottom V-belts mounted around drive rolls and idler rolls. The V-belts provide nip pressure against the film in order to drive the film. Nip pressure is generated by nip rolls on the scrap side of the film, and by belt support plates on the package side of the film.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: December 20, 2011
    Assignee: Shrink Packaging Systems Corporation
    Inventors: Frank A. James, Jeffrey C. Lindberg, Charles Manfredi, Richard Davitt