Patents Assigned to David F. Dyer
  • Pulsed electrical heating of concrete
    Patent number: 4899031
    Abstract: A method of curing green concrete using electric heating elements that are pulsed on and off by a programmable controller that controls a power source wired to an electric power main. A temperature probe may be used to inform the programmable computer of the concrete's temperature.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: February 6, 1990
    Assignee: David F. Dyer
    Inventor: David F. Dyer