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US 3,983,313 AGranted
Electric cables
AssigneeLynenwerk KG
InventorsRobert Ney, Hans-Christoph Rhiem
Life of this patent
Estimating the term…
Abstract
An insulated cable core is sheathed in polyolefin. The polyolefin for instance sheath of polyolefin for instance contains parallel non impregnated glass fibers which are undulated to improve mechanical bonding with the sheath.
Claims13
An electric cable which includes:
- an electric cable core comprising at least one insulated electric conductor, a polyethylene cable sheath surrounding said cable core, and bundles of unimpregnated glass fibers free from a bonding agent embedded in said polyethylene cable sheath and relatively spaced concentrically about said cable core, each of said bundles being enveloped by said sheath material sufficient to establish a mechanical bond between the enveloping polyethylene and said bundles of glass fibers, said bundles forming undulations in a direction longitudinally of said cable core.
Dependencies are inferred from the claim text.