Electric Patents (Class 236/74R)
  • Patent number: 6152375
    Abstract: A remote control thermostat system for controlling electric devices for remotely controlling electric heating and cooling devices for regulating temperatures inside a structure. The remote control thermostat system for controlling electric devices includes a thermostat with a transmitter for emitting signals varying with the ambient temperature around the thermostat. A control unit is in communication with a power source and has a receiver for receiving the signals from the thermostat. The control unit is adapted for selectively permitting flow of power to an electric device in response to signals received from the thermostat.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: November 28, 2000
    Inventor: Jerry L. Robison
  • Patent number: 4005726
    Abstract: A hot fluid is directed through a valved conduit inlet. Downstream of the inlet, the conduit divides into a pair of outlets through which the hot fluid flows. The flow through the outlets is controlled by a pair of vertically oriented valves linked together by a V-shaped linkage and weight biased toward the closed position such that when one valve is open the other is closed, and vice versa. The valve actuation means comprises a permanent magnet mounted on the housing in close proximity to each valve; each valve has mounted thereon and exposed to the hot fluid a magnetic material. Thus, when the magnetic material on the open valve is heated above its Curie temperature, the material loses its attraction for the permanent magnet and the weight bias closes that valve and simultaneously moves the other valve close enough to the permanent magnet to be held open thereby. When that valve's magnetic material is heated above the Curie temperature it in turn closes and the other valve opens.
    Type: Grant
    Filed: June 24, 1975
    Date of Patent: February 1, 1977
    Inventor: Herbert H. Fowler