Method and apparatus for the cryogenic stripping of electric cab

Details Method and apparatus for the cryogenic stripping of electric cab Method and apparatus for the cryogenic stripping of electric cab

1984-08-07

1986-05-20

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Electrical device making

62320, 62 63, 62 64, 62514R, 294262, 241DIG37, H05K 300, F25C 502

Patent

active

045892032

ABSTRACT:
The cable C to be stripped is wound with non-touching coils and crossed layers of cable onto a drum 6 having a perforated core 10 rotatively mounted in a thermally insulated container 1. By injecting into the container liquid nitrogen under the control of a temperature sensor and by circulating the gases contained in the container through the core of the drum and the cable coils, the whole of the cable is cooled down to a temperature at which the plastics coating and, as the case may be, the outer steel sheath of the cable become brittle. The cable is then unwound and, when it has left the container, it is subjected to various mechanical stresses. The stripped cable is finally wound onto a take-up reel 3. Application in the recovery of scrap in the manufacture of power cables of large diameter and recovery of used electric cables.

REFERENCES:
patent: 2203937 (1940-06-01), Barley, Jr.
patent: 3216208 (1965-11-01), Cummings
patent: 3527414 (1970-09-01), Schorsch
patent: 3647149 (1972-03-01), Morita et al.
patent: 3878691 (1975-04-01), Asztalos
patent: 3882687 (1975-05-01), Asztalos et al.
patent: 3990641 (1976-11-01), Weston

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