Patents by Inventor Derek Petch

Derek Petch 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).

  • DEVICES AND METHODS FOR MAGNETIC POLE RETENTION IN ELECTROMAGNETIC MACHINES
    Publication number: 20140152136
    Abstract: In some embodiments, an electromagnetic machine includes a rotor element configured for movement relative to a stator. The rotor element includes a magnetic support, a magnetic pole assembly, and a retainer. The magnetic support is formed, at least in part, from a ferromagnetic material and is configured to be coupled to the magnetic support. The retainer is coupled to both the magnetic support and the magnetic pole assembly. The retainer is further configured to be in a first state during a first time period and a second state during a second time period, after the first time period, such that during the second time period, the coupling of the magnetic pole assembly to the magnetic support is maintained.
    Type: Application
    Filed: December 3, 2012
    Publication date: June 5, 2014
    Applicant: BOULDER WIND POWER, INC.
    Inventors: James David Duford, Marc Eichinger, Stephane Eisen, Michael A. Kvam, Derek Petch, David Samsel, James S. Smith, Brian J. Sullivan