Patents by Inventor Ian Dewey

Ian Dewey 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).

  • Electrical system
    Patent number: 6411053
    Abstract: An electrical system, such as a motor control system for a motorized wheelchair, includes a two-part electrical connector which connects a first sub-system to a second sub-system. A reference terminal of one part of the connector is connected to a voltage detecting circuit but is otherwise unconnected: in the event of the connector terminals corroding, a conductive path develops between the reference terminal and one of the other, active terminals and the voltage detecting circuit detects the resulting change in voltage at the reference terminal.
    Type: Grant
    Filed: September 26, 2000
    Date of Patent: June 25, 2002
    Assignee: Penny & Giles Drives Technology Limited
    Inventor: Ian Dewey