Patent
1975-06-03
1976-08-17
Envall, Jr., R. N.
H05B 722
Patent
active
039755789
ABSTRACT:
An indirect arc metal melting furnace of the type having an insulated and essentially sealed or closed exterior shell is operated in a novel manner which thereby improves the electrical operating characteristics of the furnace.
REFERENCES:
patent: 3057937 (1962-10-01), Shaw
patent: 3106594 (1963-10-01), Beasley et al.
patent: 3520977 (1970-07-01), Petersen et al.
patent: 3711615 (1973-01-01), Petersen et al.
Dunbar Daniel H.
Envall, Jr. R. N.
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