Electric thermal unit for controllably heating cylinders having

Details Electric thermal unit for controllably heating cylinders having Electric thermal unit for controllably heating cylinders having

1984-03-12

1986-01-21

Mayewsky, Volodymyr Y.

Electric heating

Heating devices

With heating unit structure

219530, 219535, 219532, 219552, 425547, H05B 302

Patent

active

045659214

ABSTRACT:
An electric thermal unit is disclosed for controllably heating cylinders in plastic material extruders, rubber drawing machines, and the like apparata. The electric thermal unit is designed to provide closed circuit ventilation air circulation such as to enable the heated outlet air to be used for other applications, whether related or not to the proper operation of the cited apparata.

REFERENCES:
patent: 988695 (1911-04-01), Cook
patent: 1855092 (1932-04-01), Browne
patent: 2549944 (1951-04-01), Steiner
patent: 2722597 (1955-11-01), Steiner
patent: 3036187 (1962-05-01), Goldstaub et al.
patent: 3887790 (1975-06-01), Ferguson
patent: 4504734 (1985-03-01), Piazzola

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