Patents by Inventor Stephen A. Withington

Stephen A. Withington 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).

  • Bag filling apparatus and method
    Publication number: 20040103619
    Abstract: Automated apparatus for filling of a bag with a loose commodity comprises a bag filling station for dispensing commodity into a bag; a wicket for feeding a stacked and interconnected array of empty bags; and a conveyor for removing filled bags from the filling station. Reciprocating clamps grip the open mouths of the filled bags, and transfer the filled bags away from the filling station, with a subsequent bag being drawn into appropriate position for filling by means of the connection formed between the contacting bags.
    Type: Application
    Filed: November 12, 2003
    Publication date: June 3, 2004
    Applicants: Alberta Sunflower Seeds Ltd., Systematic Design Services Ltd.
    Inventors: Thomas W. Droog, Stephen A. Withington, Douglas Greening
  • Bag filling apparatus and method
    Patent number: 6662532
    Abstract: Automated apparatus for filling of a bag with a loose commodity comprises a bag filling station for dispensing commodity into a bag; a wicket for feeding a stacked and interconnected array of empty bags; and a conveyor for removing filled bags from the filling station. Reciprocating clamps grip the open mouths of the filled bags, and transfer the filled bags away from the filling station, with a subsequent bag being drawn into appropriate position for filling by means of the connection formed between the contacting bags.
    Type: Grant
    Filed: July 25, 2001
    Date of Patent: December 16, 2003
    Assignees: Alberta Sunflower Seeds, Ltd., Systematic Design Services Ltd
    Inventors: Thomas W. Droog, Stephen A. Withington, Douglas Greening