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Class Information
Number: 431/15
Name: Combustion > With indicator or inspection means > Correlated with action of condition responsive burner control > Shutdown or aborted start attempt indicated
Description: Apparatus in which the control has (1) reached a position necessitating external intervention to start, i.e., shutdown, and the indicator informs the operator that such a position has been reached; or (2) sensed that a new start attempt is necessary and informs the operator that such an attempt is being or has been made.

Sub-classes under this class:

Class Number Class Name Patents
431/16 Responsive to gas leakage, overflow, abnormal pressure or electrical component malfunction 54

Patents under this class:

Patent Number Title Of Patent Date Issued
8390981 Flare ignition apparatus Mar. 5, 2013
8152514 Oil/slurry burner with injection atomization Apr. 10, 2012
7021925 Safety module for fuel-burning appliance, and appliance using such a module Apr. 4, 2006
6949847 Rotary joint Sep. 27, 2005
6652266 Flame sensor and method of using same Nov. 25, 2003
6478573 Electronic detecting of flame loss by sensing power output from thermopile Nov. 12, 2002
6126435 Electronic ignition system for a gas stove Oct. 3, 2000
6048193 Modulated burner combustion system that prevents the use of non-commissioned components and verifies proper operation of commissioned components Apr. 11, 2000
5961314 Apparatus for detecting flame conditions in combustion systems Oct. 5, 1999
5872343 Combination switch device having rotating connector Feb. 16, 1999
5244379 Control system for a gas cooking device Sep. 14, 1993
5093085 Fluidized bed reactor method and apparatus Mar. 3, 1992
4797088 Safety device for oil burner Jan. 10, 1989
4788529 Multifunctional safety gas flow regulator's controller Nov. 29, 1988
4664095 Safety device for open-type combustor May. 12, 1987
4508501 Method of monitoring furnace installations Apr. 2, 1985
4482311 Burner with oxygen shortage sensor Nov. 13, 1984
4451226 Flame safeguard sequencer having safe start check May. 29, 1984
4436504 Apparatus for monitoring exhaust gases Mar. 13, 1984
4389184 Combustion control apparatus Jun. 21, 1983
4239478 Check circuit for combustion process control timer Dec. 16, 1980
4192641 Combustion control apparatus Mar. 11, 1980
4147493 Igniter for flares Apr. 3, 1979
4127380 Ignition system for waste gas flares with gas compensation Nov. 28, 1978
4120638 Ignition system for flares Oct. 17, 1978
4101257 Pilot gas conservation system for flare stacks Jul. 18, 1978
3999933 Burner control system Dec. 28, 1976

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