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Class Information
Number: 392/449
Name: Electric resistance heating devices > Heating devices (class 219 subclass 200) > Tank or container type liquid heater > Line connected tank
Description: Subject matter wherein the tank or container includes an inlet connected to a pressurized source of liquid and an outlet for discharging heated liquid from the tank.










Sub-classes under this class:

Class Number Class Name Patents
392/450 Plural serially connected compartments 46
392/458 With external heater 32
392/451 With immersion heating element 173
392/463 With timer controlled energization 47


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8693858 Electric water heater having filtering device Apr. 8, 2014
8666238 Fluid preheater Mar. 4, 2014
8561913 Device for dispensing water with variable temperatures Oct. 22, 2013
8498523 Apparatus and control method for a hybrid tankless water heater Jul. 30, 2013
8498527 Water heating control and storage system Jul. 30, 2013
RE44337 Combination water dispenser with heating mechanism Jul. 2, 2013
8358921 Heating kettle of a reducing agent tank Jan. 22, 2013
8320752 Drain attachment for a water heater Nov. 27, 2012
8285129 Hot water supply system for constantly maintaining temperature of hot water Oct. 9, 2012
8206656 Freezable-liquid dispenser for motor vehicles Jun. 26, 2012
8119953 Heating control system using a fluid level sensor and a heating control element Feb. 21, 2012
7965929 Heat recovery device Jun. 21, 2011
7936982 Heated spray painting system May. 3, 2011
7912360 Tank system with a main tank and a melting device having a melt tank Mar. 22, 2011
7860380 Variable volume energy saving water heater Dec. 28, 2010
7826723 Automatic circulation device of warm water Nov. 2, 2010
7712677 Water heater and control May. 11, 2010
7693402 Thermal storage unit and methods for using the same to heat a fluid Apr. 6, 2010
7596306 Combination water dispenser with heating mechanism Sep. 29, 2009
7560672 Heated pump with boiling protection Jul. 14, 2009
7409925 Water heater foam dam and component cover and method for covering a component of a water heater Aug. 12, 2008
7203418 Electric water heater with hot water outlet dip tube Apr. 10, 2007
7099572 Water heating system and method for detecting a dry fire condition for a heating element Aug. 29, 2006
7027724 Water heater and method of operating the same Apr. 11, 2006
7027723 Water heater electrical enclosure insert/foam dam Apr. 11, 2006
7020386 Recreational vehicle water heater Mar. 28, 2006
6957014 Liquid heater Oct. 18, 2005
6931204 Vacuum heat insulator, hot insulating device using vacuum heat insulator, and electric water heater Aug. 16, 2005
6917756 Water heater electrical enclosure insert/foam dam Jul. 12, 2005
6915069 Temperature sensor assembly, water heater including the temperature sensor assembly, and method of sensing a temperature Jul. 5, 2005
6836615 Heat dissipation device and water heater including the same Dec. 28, 2004
6826356 System and method for water heater protection Nov. 30, 2004
6779435 Machine for American style coffee for use on aircraft Aug. 24, 2004
6670584 Spa electric heater system using multiple spa heaters Dec. 30, 2003
6658204 Door insulator with safety plug Dec. 2, 2003
6646237 Safety control circuit for electric water heater Nov. 11, 2003
6640047 Hybrid water heater with electrical heating unit and combustor Oct. 28, 2003
6640052 Dual temperature water dispensing device Oct. 28, 2003
6606452 Hot water heater anode Aug. 12, 2003
6560409 Hot water heater stacking reduction control May. 6, 2003
6465764 Water heater and control system therefor Oct. 15, 2002
6430366 Water heating appliance with tipover and float switches Aug. 6, 2002
6282372 Multi-position point of use electric water heater Aug. 28, 2001
6266484 Water heater made of pressure-resistant plastic material Jul. 24, 2001
6240249 Electric water heater with simplified phase conversion apparatus May. 29, 2001
6208806 Electric water heater control Mar. 27, 2001
6169273 Dynamic recirculation system for heating and storing emulsified fuel oil Jan. 2, 2001
6164189 Heated water dispensing system Dec. 26, 2000
6137955 Electric water heater with improved heating element Oct. 24, 2000
6115542 Device for and method of storing and discharging a viscous liquid Sep. 5, 2000

1 2 3










 
 
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