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Class Information
Number: 236/68D
Name: Automatic temperature and humidity regulation > Motors > Relay > Auxiliary heater > Thermo-controlled pilot burner operates a heat motor to actuate main fuel valve

Patents under this class:

Patent Number Title Of Patent Date Issued
6959876 Method and apparatus for safety switch Nov. 1, 2005
6637669 Thermostatic gas valve with a pressure regulator Oct. 28, 2003
6522235 Switch structure for a heating device Feb. 18, 2003
5816490 Thermostatic gas valve for domestic heaters Oct. 6, 1998
5484103 Control device and method of making the same Jan. 16, 1996
5407128 Control system, control device therefor and methods of making the same Apr. 18, 1995
5340019 Electronic aquastat in immersible capsule Aug. 23, 1994
5326029 Control system, control device therefor and methods of making the same Jul. 5, 1994
4921161 Fuel control device, fuel control system using the device and method of making the device May. 1, 1990
4640676 Burner control device, system and method of making the same Feb. 3, 1987
4511326 Gas-supply system for catalytic gas burners Apr. 16, 1985

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