Patents by Inventor James Michael Lightfield

James Michael Lightfield 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).

  • Apparatus for ejector actuation
    Patent number: 8002532
    Abstract: Force from an electrically operated ejector mechanism of a molding machine is selectably supplemented by operation of second actuators. Second actuators are advantageously fluid (hydraulic or pneumatic) operated to supplement force provided by an electrically operated primary actuator when the ejector mechanism is driven to advance ejector members into cavities of a mold assembly. The second actuators may be enabled to be operated during automatically controlled execution of a machine cycle of operation and may be operated in response to operator selections when machine operation is controlled manually.
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: August 23, 2011
    Assignee: Milacron LLC
    Inventors: Andrew Keith Stirn, James Michael Lightfield, Sean F. Johnson
  • Apparatus for Ejector Actuation
    Publication number: 20110038976
    Abstract: Force from an electrically operated ejector mechanism of a molding machine is selectably supplemented by operation of second actuators. Second actuators are advantageously fluid (hydraulic or pneumatic) operated to supplement force provided by an electrically operated primary actuator when the ejector mechanism is driven to advance ejector members into cavities of a mold assembly. The second actuators may be enabled to be operated during automatically controlled execution of a machine cycle of operation and may be operated in response to operator selections when machine operation is controlled manually.
    Type: Application
    Filed: August 11, 2009
    Publication date: February 17, 2011
    Inventors: Andrew Keith Stirn, James Michael Lightfield, Sean F. Johnson