Pipe thawing apparatus

Details Pipe thawing apparatus Pipe thawing apparatus

1979-04-09

1982-02-02

Mayewsky, Volodymyr Y.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

137341, 138 33, 219307, 219535, 219301, H05B 102, F24H 114

Patent

active

043141404

ABSTRACT:
Apparatus for heating pipes and particularly for thawing frozen pipes is disclosed. The apparatus may be a self contained trailer having a generator and step-down transformer. One pair of terminals is connected to the secondary of the transformer and a pair of bus bars is also connected across the secondary. A current transformer operates a warning system indicating that the current to the first terminals is above a maximum value. This warns the operator that another pair of cables is necessary to heat effectively the pipe.

REFERENCES:
patent: 1733250 (1929-10-01), Davis, Jr.
patent: 2306831 (1942-12-01), Proctor
patent: 2909638 (1959-10-01), Trabilcy
patent: 2981818 (1961-04-01), Trabilcy
patent: 4002881 (1977-01-01), West

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