Closed fluid heaters > Pressure-operated > Patents

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

Sub-classes under this class:

Class Number	Class Name	Patents
236/30	Bourdon type	0
236/31	Float	0
236/26A	Gas burner controls	4
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