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Class Information
Number: 236/21B
Name: Automatic temperature and humidity regulation > Closed fluid heaters > Safety cut-out > Water heater control with excessive temperature cutoff
Description:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7090140 |
Method and device for monitoring burners |
Aug. 15, 2006 |
| 6981650 |
Pool/spa heater |
Jan. 3, 2006 |
| 6976636 |
Heater having over temperature shut off control |
Dec. 20, 2005 |
| 6059195 |
Integrated appliance control system |
May. 9, 2000 |
| 6024290 |
Fluid tempering system |
Feb. 15, 2000 |
| 5967766 |
Heater control system and methods of making |
Oct. 19, 1999 |
| 5947111 |
Apparatus for the controlled heating of process fluids |
Sep. 7, 1999 |
| 5788148 |
Vehicle heating appliance with overheating checking device |
Aug. 4, 1998 |
| 5685481 |
Trip-free high limit control |
Nov. 11, 1997 |
| 5586719 |
Control system for a hot water tank construction, control device therefor and methods of making the same |
Dec. 24, 1996 |
| 5312036 |
Instantaneous water heater which includes safety devices separately or in combination to prevent the explosion of the heat exchanger in the event of an excessive heating of the water in the he |
May. 17, 1994 |
| 5261598 |
Safety device for a combustion apparatus |
Nov. 16, 1993 |
| 5125068 |
Apparatus for controlling heating of fluids utilizing adjustable temperature set point |
Jun. 23, 1992 |
| 5092519 |
Control system for water heaters |
Mar. 3, 1992 |
| 5023432 |
Programmable hot water heater control device |
Jun. 11, 1991 |
| 4750452 |
Water heater |
Jun. 14, 1988 |
| 4690324 |
Oil burner control for hydronic system |
Sep. 1, 1987 |
| 4599992 |
Anticipatory thermostat with reset for domestic hydronic boiler control |
Jul. 15, 1986 |
| 4492092 |
Combination refrigerant circuit and hot water preheater |
Jan. 8, 1985 |
| 4470541 |
Control system for low mass hydronic boilers |
Sep. 11, 1984 |
| 4361274 |
Electronic temperature control |
Nov. 30, 1982 |
| 3961156 |
Combination temperature and pressure relief valve with energy cutoff switch |
Jun. 1, 1976 |
| 3948439 |
Sediment buildup warning device for water heaters |
Apr. 6, 1976 |
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