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Class Information
Number: 122/248
Name: Liquid heaters and vaporizers > Water tube > Coil > Horizontal > Fluid fuel
Description: Devices heated by a fluid fuel burner, the axes of the coils being horizontal.

Patents under this class:

Patent Number Title Of Patent Date Issued
7267083 Condensing heat exchanger with double bundle of tubes Sep. 11, 2007
7013843 Downdraft boiler with turbulators Mar. 21, 2006
6666173 Hot gas liquid heater Dec. 23, 2003
5899072 Steam generator and steam turbine driving unit using gaseous hydrogen as fuel May. 4, 1999
5713310 Heat exchanger for pressure washer Feb. 3, 1998
5706767 Monobloc boiler especially suitable for hydrocleaning machines Jan. 13, 1998
5687678 High efficiency commercial water heater Nov. 18, 1997
5638773 Method and apparatus for low NOX combustion of gaseous fuels Jun. 17, 1997
5555850 Method and apparatus for heating liquid Sep. 17, 1996
5365888 Fluid heater and method Nov. 22, 1994
5311843 Water heating apparatus May. 17, 1994
5228413 Multiple boiler Jul. 20, 1993
4901677 Finned-tube heat exchanger with liquid-cooled baffle Feb. 20, 1990
4742643 Water heating and distribution system May. 10, 1988
4665894 Gas-heated or kerosene-heated boiler for warm water, hot water or steam generation May. 19, 1987
4557323 Heat exchanger and method of making same Dec. 10, 1985
4550689 Gas instantaneous water heater Nov. 5, 1985
4497281 Heater Feb. 5, 1985
4488594 Fired heater for coal liquefaction process Dec. 18, 1984
4361276 Heating system having supplemental coil arrangement Nov. 30, 1982
4357910 Multi-pass helical coil thermal fluid heater Nov. 9, 1982
4294199 Steam generating magnetohydrodynamic diffuser Oct. 13, 1981
4187701 Laundry hot water supply system and apparatus Feb. 12, 1980
4041908 Super heater Aug. 16, 1977
4029056 Compact indirect heating vapor generator Jun. 14, 1977
3962999 Heat transfer fluid heater with continuously flushed vent and drain Jun. 15, 1976

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