Sealed connection device for a cable

Claim 2

A sealed connection device for a cable under gaseous pressure, said cable including covering means enclosing a harness of electrically insulated conductors subjected to the pressure of an inert internal gas, said sealed connection device comprising: sleeve means enclosing a bared zone of the conductor harness of the cable, said sleeve means including an outer covering of an elastomeric substance, a viscous chemically neutral liquid contained inside said sleeve means in contact with the conductors, said viscous liquid being under a pressure greater than the gaseous pressure in the cable, and sealing means sealing the ends of said sleeve means onto the cable.

Claim 3

A sealed connection device according to claim 1, characterized in that the said viscous liquid is formed by a polyisobutylene.

Claim 4

A sealed connection device according to claim 1, characterized in that said sleeve means further comprises a tubular metallic part disposed inside the elastomeric outer covering, the ends of said metallic part being made fast in a sealed manner with said cable and having an enlarged middle portion which has passages for said viscous liquid.

Claim 5

A sealed connection device according to claim 3, wherein said sealing means include a plurality of bands surrounding the ends of said outer covering to ensure the fastening of said outer covering on said tubular part.

Claim 6

A sealed connection device according to claim 1, wherein said sealing means include a plurality of bands fixing said sleeve means onto the cable.

Claim 7

A sealed connection device according to claim 1, wherein said sealing means further include two stoppers provided respectively at the ends of said sleeve means, said sleeve means being fixed onto said two stoppers.

Claim 8

A sealed connection device according to claim 1, wherein said viscous liquid is under a pressure 1.5 times greater than the gaseous pressure in the cable.

Claim 9

A sealed connection device for a cable under gaseous pressure, including a covering enclosing a harness of electrically insulated conductors subjected to the pressure of an inert internal gas, said device comprising a first sleeve made of an elastomeric substance closely bound at both ends to the covering of said cable in surrounding relationship to a first bared zone of the cable and filled with a viscous chemically neutral liquid in contact with the conductors under an internal pressure greater than the gaseous pressure prevailing in the cable, characterized in that said device further comprises two stoppers formed by a second sleeve and a third sleeve made of solid resin, secured to the cable and enclosing a second bared zone and a third bared zone of the cable situated on either side of the first bared zone, respectively.

Claim 10

A sealed connection device for a cable under gaseous pressure, including a covering enclosing a harness of electrically insulated conductors subjected to the pressure of an inert internal gas, said device comprising a first sleeve made of an elastomeric substance closely bound at both ends to the covering of said cable in surrounding relationship to a first bared zone of the cable and filled with a viscous chemically neutral liquid in contact with the conductors under an internal pressure greater than the gaseous pressure prevailing in the cable, characterized in that said device further comprises two stoppers formed by a second sleeve and a third sleeve made of solid resin, secured to the cable and enclosing a second bared zone and a third bared zone of the cable situated on either side of the first bared zone, respectively.

Claim 11

A sealed connection device according to claim 8, characterized in that the said first sleeve covers the adjacent edges of said second sleeve and said third sleeve, and a plurality of bands are provided about the ends of said first sleeve ensuring its connection to the cable through the edges of the said second and third sleeves.