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Class Information
Number: 236/26R
Name: Automatic temperature and humidity regulation > Closed fluid heaters > Pressure-operated

Sub-classes under this class:

Class Number Class Name Patents
236/30 Bourdon type 0
236/31 Float 0
236/26A Gas burner controls 5
236/26C Pressure responsive elements per se 1
236/26B Pressure responsive means controls draft 0
236/26F Pressure responsive means controls fluid coupling 0
236/26D Pressure responsive means controls forced draft 2
236/26E Pressure responsive means controls oil burner 1
236/29 Relay, puppet 0
236/28 Stroke retarding 0
236/27 With balancing pressure chamber 1

Patents under this class:

Patent Number Title Of Patent Date Issued
7096828 Self cleaning boiler and steam generator Aug. 29, 2006
6158231 Temperature regulating system employing thermostatic switching devices to assure safe operation of the system in both hazardous and non-hazardous applications Dec. 12, 2000
4787554 Firing rate control system for a fuel burner Nov. 29, 1988
4513909 Fuel burner control system with low fire hole Apr. 30, 1985
4513910 Adaptive low fire hold control system Apr. 30, 1985

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