Electric heating – Heating devices – With heater-unit housing – casing – or support means
Patent
1977-05-24
1978-11-07
Bartis, A.
Electric heating
Heating devices
With heater-unit housing, casing, or support means
219341, 219342, 219365, 219534, 219540, 338 51, 338237, H05B 350, H01C 1026
Patent
active
041247949
ABSTRACT:
An improved electrical heater using a vacuum surrounding the heating element instead of the usual gaseous or liquid medium for transfer of the heat to external means of dissipation. The heating element, enclosed and sealed in a surrounding encasement which has been evacuated after being sealed, transmits its heat across the vacuum by radiation to the encasement and thence to a series of fins as the means of external dissipation. The heater thereby improves the efficiency of the utilization of the electrical energy used to supply the heat source. The heat dissipating fins are provided with integral spacer lips and are secured on the surrounding encasement by end plates which are formed with downwardly extending portions forming feet on which to stand the heater.
REFERENCES:
patent: 447127 (1891-02-01), Butterfield
patent: 620086 (1899-02-01), Casper
patent: 1754232 (1930-04-01), Fisher
patent: 2196484 (1940-04-01), Wentworth
patent: 2207558 (1940-07-01), Singer
patent: 2215587 (1940-09-01), Kerschbaum
patent: 2225850 (1940-12-01), Wright
patent: 2231236 (1941-02-01), Wentworth
patent: 2473783 (1949-06-01), Brown
patent: 2676238 (1954-04-01), Coates
patent: 2803734 (1957-08-01), Germon
patent: 3353003 (1967-11-01), Somero
Bartis A.
Finch Walter G.
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