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US 6,501,027 B1Granted
Cable with impact-resistant coating
AssigneePirelli Cavi e Sistemi S.p.A.
InventorsSergio Belli, Luigi Caimi, Alberto Bareggi, Luca Balconi
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Abstract
The invention relates to a coating for cable which is capable of protecting the cable against accidental impacts. By inserting into the structure of a power transmission cable a suitable coating of expanded polymer material of adequate thickness, preferably in contact with the sheath of outer polymer coating to obtain a cable which has a high impact strength.
Claims21
A cable comprising:
- an inner struture;
- and
- a coating layer disposed to surround said inner struture,
- wherein said coating layer provides impact resistance and is made from an expanded polymer material having a degree of expansion of form about 20% to about 3000% and a flexural modulus of at least 200 MPa before expansion of said polymer,
- wherein said coating of expanded polymer material has a thickness of between 1 and 6 mm.
2 more elements
Dependencies are inferred from the claim text.