Patents Assigned to S. A. Childs
  • Pressure monitoring device
    Patent number: 4023415
    Abstract: An actuator device responsive to a pressure variation in its surrounding environment comprises a wall structure forming a small chamber having a pressure activated inlet check valve that allows fluid to flow into the chamber. One wall portion of the device is movable to an extendable position when pressure within the chamber exceeds the outside pressure.
    Type: Grant
    Filed: September 22, 1975
    Date of Patent: May 17, 1977
    Assignees: G. E. Garcia, P. C. Jackson, T. G. Spragg, S. A. Childs, Edwin W. Randle, Thelma H. Randle, James G. Shields
    Inventor: George E. Garcia