Patents by Inventor Richard T. Mallum

Richard T. Mallum 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).

  • Electronic proportioner using continuous metering and correction
    Patent number: 9010367
    Abstract: The controller of the plural component proportioner (10) dispenses both components (or all three if a three component material) as necessary to maintain the correct mix ratio. The fluid displacement measuring technique described allows this proportioning to take place with the “A” or main component pump always able to supply fluid to the spray gun without being stopped. The “B” component, at a higher pressure, is added as necessary to control ratio. The control can determine whether the pumps were properly loaded with fluid, and the fluid was properly compressed for accurate measurement. This technique allows for the proportioned fluids to be provided to the spray gun(s) at high flow rates and consistent spray pressure without interruption.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: April 21, 2015
    Assignee: Graco Minnesota Inc.
    Inventors: Martin P. McCormick, Richard T. Mallum, Jeffrey G. Zinn
  • ELECTRONIC PROPORTIONER USING CONTINUOUS METERING AND CORRECTION
    Publication number: 20120045346
    Abstract: The controller of the plural component proportioner (10) dispenses both components (or all three if a three component material) as necessary to maintain the correct mix ratio. The fluid displacement measuring technique described allows this proportioning to take place with the “A” or main component pump always able to supply fluid to the spray gun without being stopped. The “B” component, at a higher pressure, is added as necessary to control ratio. The control can determine whether the pumps were properly loaded with fluid, and the fluid was properly compressed for accurate measurement. This technique allows for the proportioned fluids to be provided to the spray gun(s) at high flow rates and consistent spray pressure without interruption.
    Type: Application
    Filed: March 9, 2010
    Publication date: February 23, 2012
    Inventors: Martin P. McCormick, Richard T. Mallum, Jeffrey G. Zinn