Electric resistance heating devices – Heating devices – Fluid-in-circuit type heater
Patent
1993-01-29
1994-11-08
Paschall, Mark H.
Electric resistance heating devices
Heating devices
Fluid-in-circuit type heater
392327, 392326, 219483, 219492, H05B 102, H05B 360
Patent
active
053634713
ABSTRACT:
An electrode boiler comprising a container for containing water and electrodes within the container which serve to pass electrical current through such water and which are generally upright when the boiler is in use. Fill and drain valves are connected to the container to enable water to be fed to and drained from the container. An outlet of the container enables steam generated inside the container to pass out therefrom when the boiler is in use. A water level contact member is arranged to cause a signal to occur when the water in the container reaches a predetermined level. The boiler is provided with a store to store the value of an allowed time for water to boil away from the said predetermined level until the water is no longer in contact with the contact member. A timer is connected to time the actual time it takes for such boiling away to occur, and comparator is connected to the store and the timer to effect a comparison between the allowed time and the said actual time.
REFERENCES:
patent: 3944785 (1976-03-01), Eaton-Williams
patent: 4382173 (1983-05-01), Howard-Leicester
patent: 4430555 (1984-02-01), Stokes
patent: 4675505 (1987-06-01), Fischer
patent: 4692591 (1987-09-01), Cooley et al.
patent: 4705936 (1987-11-01), Fowler
patent: 4883944 (1989-11-01), Takano et al.
patent: 5079410 (1992-01-01), Payne et al.
patent: 5130518 (1992-07-01), Merle
Eaton-Williams Group Limited
Paschall Mark H.
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