Patents by Inventor Stephen Halladin

Stephen Halladin 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).

  • Adaptive control of composite plycutting
    Patent number: 8180479
    Abstract: The feed rate of an ultrasonic knife used to cut composite material is optimized using adaptive control. One or more parameters such as ultrasonic power or side load on the knife is sensed and used to generate feedback control signals. The feedback control signals are used to optimize the commanded feedrate of the knife.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: May 15, 2012
    Assignee: The Boeing Company
    Inventors: Liangji Xu, Stephen Halladin, Robert A. Kramp, Jr.
  • ADAPTIVE CONTROL OF COMPOSITE PLYCUTTING
    Publication number: 20090198369
    Abstract: The feed rate of an ultrasonic knife used to cut composite material is optimized using adaptive control. One or more parameters such as ultrasonic power or side load on the knife is sensed and used to generate feedback control signals. The feedback control signals are used to optimize the commanded feedrate of the knife.
    Type: Application
    Filed: February 5, 2008
    Publication date: August 6, 2009
    Inventors: LIANGJI XU, Stephen Halladin, Robert A. Kramp, JR.