Patents Assigned to Amelia Inc.
  • Patent number: RE30135
    Abstract: An electrically operated fail-safe valve actuator employs a spring which is wound to store energy during operation of the electric drive motor, an electric clutch operable to disengage the drive motor from the actuator output shaft in response to loss of power from the electrical supply whereby the spring drives the valve in the opposite direction.
    Type: Grant
    Filed: October 29, 1975
    Date of Patent: November 6, 1979
    Assignee: Amelia Inc.
    Inventors: John H. Fitzwater, deceased, by Amelia Fitzwater, executrix