Patents by Inventor James Mitchell Penman

James Mitchell Penman 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).

  • VALVE TESTING
    Publication number: 20100236319
    Abstract: Apparatus for testing a safety valve by applying a force to the valve stem and detecting the resultant motion of the valve. The actuator used is generally a hollow cylinder of piezoelectric material or other solid state actuator, which is adapted to locate concentrically about the valve stem. The concentric placement and lack of moving parts creates reliability and even force distribution while maintaining a small overall size.
    Type: Application
    Filed: October 14, 2008
    Publication date: September 23, 2010
    Applicant: QINETIQ LIMITED
    Inventor: James Mitchell Penman