Inventor
HARRIGILL WILLIAM T
US12 patents
⚠️ This page may combine multiple inventors who share the name “HARRIGILL WILLIAM T”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RHEEM MFG CO
6 patentsUS7298968B1Nov 20, 2007
Pumpless combination instantaneous/storage water heater system
RHEEM MFG CO69 citations97
US4974579ADec 4, 1990
Induced draft, fuel-fired furnace apparatus having an improved, high efficiency heat exchanger
RHEEM MFG CO41 citations92
US7242310B2Jul 10, 2007
Control techniques for shut-off sensors in fuel-fired heating appliances
RHEEM MFG CO24 citations91
US7818095B2Oct 19, 2010
Water heater monitor/diagnostic display apparatus
RHEEM MFG CO15 citations83
US4926840AMay 22, 1990
Pilot gas bypass system for fuel-fired furnaces
RHEEM MFG CO8 citations73
US7849821B2Dec 14, 2010
Burner flashback detection and system shutdown apparatus
RHEEM MFG CO2 citations61
COLEMAN CO
3 patentsWATER HEATER IND JOINT RES & DEVELOPMENT CONSORTIUM
3 patentsUS6412447B1Jul 2, 2002
Fuel-fired water heater with flammable vapor sensor and associated induced flow tube
WATER HEATER IND JOINT RES & DEVELOPMENT CONSORTIUM36 citations91
US6035812AMar 14, 2000
Combustion air shutoff system for a fuel-fired heating appliance
WATER HEATER IND JOINT RES & DEVELOPMENT CONSORTIUM22 citations91
US6418882B1Jul 16, 2002
Power vented, fuel fired water heater with soft ignition system
WATER HEATER IND JOINT RES & DEVELOPMENT CONSORTIUM11 citations69