Electrical cable having at least its leading end partially prepared for jointing prior to laying
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United States of America Patent
Stats
-
May 19, 1987
Grant Date -
N/A
app pub date -
Jan 3, 1986
filing date -
Jan 23, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cable length of the type comprising a conductor, polymeric insulation 3 over the conductor, a semiconducting screen 4 over the polymeric insulation, a fault carrying screen 5 over the semiconducting screen, and a protective sheath 6 over the semiconducting screen has at least the leading end thereof partially prepared for jointing prior to laying of the cable. At the leading and or each end the cable is stripped back over successive increasing lengths 7, 8, 9 to its polymeric insulation 3, its semiconducting screen 4 and its fault carrying screen 5. A semiconducting sleeve 13 fits over the protective sheath 6, extends over the stripped lengths of fault carrying screen 5 and semiconducting screen 4 and abuts the end portion of the latter. A clamp 12 disposed within the sleeve 13 terminates the fault carrying screen 5 and a sleeve 19 of polymeric insulation is provided on the stripped length of polymeric insulation 3. The sleeves 13 and 19 have the same outside diameter and thus the cable end has a generally cylindrical form with an outside diameter such as the outside diameter of the cable. This facilitates laying of the cable when the end is the leading end and has to be pulled through a trench. The cable as partially prepared is wound on a drum.
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