Patents by Inventor David C. Cannon

David C. Cannon 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: 4719855
    Abstract: Web treatment apparatus, such as a rotary die cutting machine, is provided with a die cylinder position encoder for generating pulses as the die cylinder rotates, feed roll position encoder for generating pulses as the feed rolls rotate; voltage dependent stored program driven servo drive for rotating the feed rolls; pull-off rolls for withdrawing web material from a supply roll and maintaining a storage loop thereof leading to the feed rolls; and a microprocessor based system including manually settable input for inputting the die length and length of pullback desired between cutting cycles. A position controller monitors die cutter speed and position from the die cylinder position encoder and provides voltage signals to the feed roll servo drive dependent upon the inputted data to provide velocity and acceleration profile for the feed rolls appropriate to the entered die length. It also provides a voltage signal to the pull-off roll drive to initialize the rate of input of web to the storage loop.
    Type: Grant
    Filed: August 1, 1986
    Date of Patent: January 19, 1988
    Assignee: Sonoco Products Company
    Inventors: David C. Cannon, Stephen P. Lyles
  • Patent number: 4690299
    Abstract: A non-returnable beer keg including a pressure-retaining tubular composite body surrounded by an outwardly spaced independent rigid self-sustaining tubular metal wall. A pair of metal end caps overlie the opposed ends of the composite tubular body and are peripherally fixed to the opposed ends of the outer metal wall. A liquid impervious liner is provided interiorly within the composite body. One end cap incorporates a filling hole with an associated dispensing valve assembly. This end cap is in turn surrounded by an extension cuff fixed to the metal wall and incorporating hand holes therein.
    Type: Grant
    Filed: June 17, 1986
    Date of Patent: September 1, 1987
    Assignee: Sonoco Products Company
    Inventor: David C. Cannon