Patents by Inventor Mark Aaron McDonald

Mark Aaron McDonald 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).

  • In an injection molding machine, a method of controlling a melt accumulator
    Patent number: 9352503
    Abstract: According to embodiments, there is provided a method (300) of controlling a first melt accumulator (121). The first melt accumulator (121) is part of an injection unit (100), the injection unit (100) including an extruder (102) for preparing molding material and a second melt accumulator (123). The first melt accumulator (121) and the second melt accumulator (123) are configured to sequentially receive molding material from the extruder (102). The extruder (102) is being operable to produce molding material in at least near continuous manner, both the first melt accumulator (121) and the second melt accumulator (123) being associated with a respective shot size set-point. The method comprises detecting (310) an indication of an out-of-boundary condition associated with operation the first melt accumulator (121); responsive to said detecting (310), controlling (320) the first melt accumulator (121) to continue accepting molding material beyond its respective shot size set-point.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: May 31, 2016
    Assignee: HUSKY INJECTION MOLDING SYSTEMS LTD.
    Inventors: Michael David Kershaw, Kevin Wing Hang Leung, Mark Aaron McDonald
  • IN AN INJECTION MOLDING MACHINE, A METHOD OF CONTROLLING A MELT ACCUMULATOR
    Publication number: 20120306113
    Abstract: According to embodiments, there is provided a method (300) of controlling a first melt accumulator (121). The first melt accumulator (121) is part of an injection unit (100), the injection unit (100) including an extruder (102) for preparing molding material and a second melt accumulator (123). The first melt accumulator (121) and the second melt accumulator (123) are configured to sequentially receive molding material from the extruder (102). The extruder (102) is being operable to produce molding material in at least near continuous manner, both the first melt accumulator (121) and the second melt accumulator (123) being associated with a respective shot size set-point. The method comprises detecting (310) an indication of an out-of-boundary condition associated with operation the first melt accumulator (121); responsive to said detecting (310), controlling (320) the first melt accumulator (121) to continue accepting molding material beyond its respective shot size set-point.
    Type: Application
    Filed: January 19, 2011
    Publication date: December 6, 2012
    Inventors: Michael David Kershaw, Kevin Wing Hang Leung, Mark Aaron McDonald