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Class Information
Number: 392/402
Name: Electric resistance heating devices > Heating devices (class 219 subclass 200) > Vaporizer > Liquid evaporant (e.g., water, etc.) > In-line connected open tank or container (i.e., nonpressurized)
Description: Subject matter wherein the liquid is contained in a vessel connected to a source of liquid supply, and from which the vapor may be drawn off from an outlet or draw off pipe, and in which pressures equal to atmosphere may be maintained.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8648281 Steam generating device and cooking device Feb. 11, 2014
8581151 Steam oven water delivery and drain valve systems and methods Nov. 12, 2013
8288690 Oven steam generator systems and methods Oct. 16, 2012
7989737 Steam generator and heating cooking apparatus having the same Aug. 2, 2011
7833353 Liquid material vaporization apparatus for semiconductor processing apparatus Nov. 16, 2010
7826725 Water level sensor for steam humidifier Nov. 2, 2010
7623771 Detection of deposits in steam humidifiers Nov. 24, 2009
7616871 Water chamber for humidifier Nov. 10, 2009
7362964 Humidifier with ultraviolet lamp Apr. 22, 2008
6577815 Steam generating device for use in sauna Jun. 10, 2003
6510280 Structure of steamer Jan. 21, 2003
6228175 Apparatus for generating a wet oxygen stream for a semiconductor processing furnace May. 8, 2001
6115539 Module for producing hot humid air for a proofing or holding chamber Sep. 5, 2000
6078729 Foam, drain and fill control system for humidifier Jun. 20, 2000
6031968 Humidifying system with a filling level control for the liquid to be evaporated Feb. 29, 2000
5815637 Humidifier for control of semi-conductor manufacturing environments Sep. 29, 1998
5809210 Phosphorescent humidifiers and vaporizers Sep. 15, 1998
5758018 Power steam humidifier May. 26, 1998
5752498 Elliptical beam load cell May. 19, 1998
5719990 Hot water and electricity generator Feb. 17, 1998
5693270 Method of making humidifiers and vaporizers Dec. 2, 1997
5563981 Electric glass incense burner structure and heat conducting device thereof Oct. 8, 1996
5537508 Method and dry vapor generator channel assembly for conveying a liquid from a liquid source to a liquid vaporizer with minimal liquid stagnation Jul. 16, 1996
5388179 Float switch for preventing damage to the electric water heater element Feb. 7, 1995
5361322 Ejector tube humidifier for blowerless mixing of air and steam Nov. 1, 1994
5348623 Water heating and distilling apparatus Sep. 20, 1994
5313550 Steam humidifier with modular construction and electrodes to generate steam May. 17, 1994
5307440 Electrically heated steam generator with a proportionally controlled steam and power take-off for supplying steam and electric power to an external user Apr. 26, 1994
5286351 Water distilling method Feb. 15, 1994
5278937 Humidifier especially suitable for aircraft air conditioning system Jan. 11, 1994
5256382 Vapor-heated chamber Oct. 26, 1993
5140667 Electric steam humidifier for mounting on the horizontal bottom wall or vertical side wall of an air duct of a forced air furnace Aug. 18, 1992
5110418 Water distiller having a heating element with temperature sensing and control elements May. 5, 1992
5023926 Steam generator for steam baths Jun. 11, 1991
4978833 Hot water dispenser having improved water temperature control system Dec. 18, 1990
4851644 Electric combination oven Jul. 25, 1989
4825847 Air furnace system May. 2, 1989
4764661 Air humidifier Aug. 16, 1988
4705936 Electronically controlled electric steam humidifier Nov. 10, 1987
4697735 Humidifying hot water heater Oct. 6, 1987
4668854 Humidification system May. 26, 1987
4618462 Humidifier with controlled heat input Oct. 21, 1986
4564746 Steam humidifier cabinet construction Jan. 14, 1986
4460822 Pressureless steam cooker Jul. 17, 1984
4419302 Steam generator Dec. 6, 1983
4396372 Burner system Aug. 2, 1983
4339307 Distillation apparatus Jul. 13, 1982
4334955 Device for controlling evaporation of a liquid Jun. 15, 1982
4239956 Electric steam humidifier Dec. 16, 1980
4146775 Automatic control system for an electrode-type air humidifier Mar. 27, 1979

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