Patents by Inventor Eric E. Simpson

Eric E. Simpson 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 control systems
    Patent number: 4791309
    Abstract: A hydroelectric power system has a reservoir (prime mover) (17) driving an electrical generator (10) which supplies a consumer load (B) and an auxiliary load (14). A control system (11) operates control (15) for the prime mover, control (13) for the auxiliary load and/or control (12) for the consumer load in response to a signal from the generator (10) or some other source, so that the supply is stabilized so far as possible to a minimum. Normally no energy is dissipated in the auxiliary load, except during a control sequence.
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: December 13, 1988
    Assignee: Thamesmead Engineering Limited
    Inventors: Richard D. Payne, Eric E. Simpson