Filled service cable having corrugated shield and methods of mak

Details Filled service cable having corrugated shield and methods of mak Filled service cable having corrugated shield and methods of mak

1977-08-22

1979-04-24

Askin, Laramie E.

Electricity: conductors and insulators

Conduits, cables or conductors

Conductive armor or sheath

156 54, 174102D, H01B 720, H01B 1106, H01B 1324, H01B 1326

Patent

active

041513657

ABSTRACT:
A cable comprises a plurality of insulated conductors enclosed in a corrugated metallic shield jacketed with a plastic material. As a corrugated metallic tape is wrapped longitudinally about the core to form the shield, overlapping longitudinal edge portions of the shield are intentionally spaced apart radially. When the plastic jacket is extruded over the shield, a portion of the plastic material extends between the overlapped but spaced apart longitudinal edge portions. This prevents lock-in of the corrugations along the overlapped edge portions and provides the cable with an additional degree of freedom of movement so that the cable can withstand placement stresses caused by sharp radius bending during installation without shield separation or cracking.

REFERENCES:
patent: 2090744 (1937-08-01), Boe
patent: 3087007 (1963-04-01), Jachimowicz
patent: 3272912 (1966-09-01), Jachimowicz
patent: 3803340 (1974-04-01), Jachimowicz

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