Electric heating – Heating devices – With heater-unit housing – casing – or support means
Patent
1979-01-26
1980-11-18
Mayewsky, Volodymyr Y.
Electric heating
Heating devices
With heater-unit housing, casing, or support means
219318, 219324, 219331, 219333, 219337, 219354, 219494, 219541, 119 5, 250354, H05B 306
Patent
active
042347858
ABSTRACT:
There is disclosed liquid level responsive control means for use with heating means for liquid in tanks comprising a control unit, main power supply connections therefore, a source of radiant energy to be immersed in the liquid being heated, sensing instrumentalities closely adjacent said source, said instrumentalities including a recycling bi-metal switch operable at a predetermined temperature produced by the source aforesaid, and a non-recycling or fuse element connected in series with the said switch and operable at a higher temperature, connections from the control unit to supply power to the radiant energy source and connections to the sensing instrumentalities and to the tank heating means.
REFERENCES:
patent: 3134008 (1964-05-01), Finn
patent: 3576426 (1971-04-01), Sesholtz
patent: 3619565 (1971-11-01), D'Elia
patent: 3746836 (1971-07-01), Summerfield et al.
patent: 3983361 (1976-09-01), Wild et al.
patent: 4068116 (1978-01-01), McKinstry
patent: 4107514 (1978-08-01), Ellson
Mayewsky Volodymyr Y.
Robb Frank B.
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