Electric heating element

Details Electric heating element Electric heating element

1986-04-28

1987-09-29

Goldberg, E. A.

Electric heating

Heating devices

Combined with diverse-type art device

106 76, 106 97, 219345, 219553, H05B 328

Patent

active

046970630

ABSTRACT:
An electric heating element includes a core of electrically conductive material connected to a source of alternating current and has a shell of impermeable concrete. The core is moulded from a mixture of graphite powder, silicate of potassium, cement and water.

REFERENCES:
patent: 802914 (1905-10-01), Christensen
patent: 3412358 (1968-11-01), Hummel

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