Patents by Inventor Harold H. Riddell

Harold H. Riddell 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: 6386858
    Abstract: A rotary blow molding machine comprising a rotatable wheel, a plurality of mold assemblies mounted on the wheel in circumferentially spaced apart relation, each of said mold assemblies being openable to expose a finished workpiece as the mold assembly moves through a workpiece discharge station. A take-out assembly removes a finished workpiece from a mold assembly as the mold assembly moves through said discharge station, the take-out assembly including a first transfer mechanism mounted adjacent said discharge station and including a first pick-up unit for grasping a finished workpiece and moving it in a substantially linear direction upwardly away from said wheel to a transfer station. A second rotary transfer mechanism is mounted at the transfer station for receiving a workpiece from the first pick-up unit and moving the workpiece to an exit station as the first pick-up unit returns to the discharge station to pick up another finished workpiece from the wheel.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: May 14, 2002
    Assignee: Ring Can Corporation
    Inventor: Harold H. Riddell