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Class Information
Number: 137/65
Name: Fluid handling > Combustion failure responsive fuel safety cut-off for burners
Description: Subject matter comprising a flow control device or safety valve in the fuel supply to a burner which is automatically actuated to discontinue the fuel flow in response to the extinguishment of the main or pilot burner.










Sub-classes under this class:

Class Number Class Name Patents
137/66 Thermo-electric 87


Patents under this class:

Patent Number Title Of Patent Date Issued
8602047 Gas regulator fitting Dec. 10, 2013
8479759 Device for controlling the supply of a combustible gas to a burner apparatus Jul. 9, 2013
7252502 Method and system for combined standing pilot safety and temperature setting Aug. 7, 2007
6848474 Control device for a flow of fluid Feb. 1, 2005
6745994 Device for repositioning a rotating element Jun. 8, 2004
5844492 Water leakage detection and gas shut-off device Dec. 1, 1998
5785511 Control device for gas supply to main burner and pilot burner of a gas equipment Jul. 28, 1998
5735503 Servo pressure regulator for a gas valve Apr. 7, 1998
5280802 Gas appliance detection apparatus Jan. 25, 1994
4995415 Partially flooded gas appliance safety shut-off method and apparatus Feb. 26, 1991
4832070 Flame failure devices May. 23, 1989
4806095 Fuel valve control system Feb. 21, 1989
4783600 Automatic controller of the master gas switch Nov. 8, 1988
4778378 Self-powered intermittent ignition and control system for gas combustion appliances Oct. 18, 1988
4518003 Pressure responsive cap for gas appliances May. 21, 1985
4491142 Automatic stopping device of combustion fuel supply Jan. 1, 1985
4437830 Burner and pilot valve safety control system Mar. 20, 1984
4429705 Manually actuated fuel valve control Feb. 7, 1984
4303384 Flame failure device Dec. 1, 1981
4168719 Gas control unit for a burner Sep. 25, 1979
4092994 Valves Jun. 6, 1978
4080154 Gas burner control system with cycling pilot Mar. 21, 1978
4005726 Thermomagnetic valve Feb. 1, 1977
3975135 Burner control system with cycling pilot burner Aug. 17, 1976
3938936 Fluid control system Feb. 17, 1976











 
 
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