Patents by Inventor Patrick J. Kelnhofer

Patrick J. Kelnhofer 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).

  • Shopping cart conveyor with gate assembly
    Patent number: 8328003
    Abstract: A conveyor for moving a shopping cart between a first location and a second location. The conveyor including a movable conveyor that is adapted to engage and move the shopping cart along a path, and a gate assembly including a door that is movable between an open position allowing passage of the shopping cart along the path, and a closed position inhibiting passage of the shopping art along the path. The door is adapted to move from the closed position to the open position as the shopping cart approaches, and is adapted to move back to the closed position before the shopping cart has passed the door.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: December 11, 2012
    Assignee: Pflow Industries, Inc.
    Inventors: Mark R. Webster, Patrick J. Kelnhofer, Gene M. Barth
  • SHOPPING CART CONVEYOR WITH GATE ASSEMBLY
    Publication number: 20110147164
    Abstract: A conveyor for moving a shopping cart between a first location and a second location. The conveyor including a movable conveyor that is adapted to engage and move the shopping cart along a path, and a gate assembly including a door that is movable between an open position allowing passage of the shopping cart along the path, and a closed position inhibiting passage of the shopping art along the path. The door is adapted to move from the closed position to the open position as the shopping cart approaches, and is adapted to move back to the closed position before the shopping cart has passed the door.
    Type: Application
    Filed: December 23, 2009
    Publication date: June 23, 2011
    Applicant: PFLOW INDUSTRIES, INC.
    Inventors: Mark R. Webster, Patrick J. Kelnhofer, Gene M. Barth