H - Electricity – 01 – B
Patent
H - Electricity
01
B
H01B 7/28 (2006.01) H01B 7/288 (2006.01) B29C 47/00 (2006.01)
Patent
CA 2061775
- 11 - CABLE HAVING WATERBLOCKING PROVISIONS BETWEEN LAYERS OF RELATIVELY RIGID AND SUPPLE MATERIALS Abstract A communications cable (20) includes a core (22) comprising a plurality of transmission media having a relatively supple layer (26) of a plastic material wrapped thereabout. Disposed about the layer of plastic material and in engagement therewith is a relatively rigid inner plastic jacket (28). Disposed about the inner jacket are additional components of a sheath system such as metallic shields and one or more additional plastic jackets. Interposed between the relatively supple layer of plastic material and the jacket is a waterblocking system which comprises two elongated strand materials (41,44) such as yarns. The two elongated strand materials are wrapped helically about the layer of plastic material in opposite helical directions. The elongated strand materials are effective to intercept water which may travel along the cable between the relatively supple layer of plastic material and the jacket which is contiguous thereto.
Arroyo Candido John
Bogdan Stanley Richard
Hancock David Shepherd
American Telephone And Telegraph Company
Kirby Eades Gale Baker
LandOfFree
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