Patents by Inventor Ben Stephen Markham

Ben Stephen Markham 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).

  • Electricity Generating Playground Equipment and Method
    Publication number: 20080252180
    Abstract: An electricity generating playground device configured for recreational activity by children includes a playground device having a cyclically movable part. An electricity generator is operably coupled to the cyclically movable part, and operable to generate electricity when the cyclically movable part is moved through a cyclical motion. A duty cycle controller is operably coupled to the electricity generator, and operable to convert a predetermined portion of the kinetic energy of the cyclically movable part to usable electricity.
    Type: Application
    Filed: April 1, 2008
    Publication date: October 16, 2008
    Inventor: Ben Stephen Markham