Electrically shielded cable seal assembly and penetration combination

Claim 2

An electrically shielded cable seal assembly for connecting two sections of a shielded cable comprising; a longitudinally extending signal cable; a flexible, foraminous, conductive shielding means through which resinous sealant may be readily passed, radially disposed about and spaced from the signal cable; two spaced apart electrically insulating resinous sealant members formed of in situ hardened resinous sealant disposed about the signal cable and filling the spacing between the signal cable and the shielding means, and encompassing the shielding means, with a leak monitoring spacing maintained between the spaced apart sealant members which each form a seal about and along the signal cable and the shielding means, said signal cable and shielding means extending through said sealant members and continuing as the signal cable and shielding means on either side thereof.

Claim 3

The seal assembly specified in claim 1, wherein a second conductive shielding means is provided spaced concentrically about the flexible, foraminous conductive shielding means, and the second conductive shielding means is also a flexible, foraminous conductive means and the resinous sealant members extend radially outwardly and encompass the second shielding means.

Claim 4

The seal assembly specified in claim 1, in combination with matched input and output shielded cables electrically connected to the seal assembly wherein the spacing between the signal cable and the shielding means, and the dielectric constant of the resinous sealant are selected so that the electrical impedance of the seal assembly matches the electrical impedance of the shielded cables.

Claim 5

The seal assembly specified in claim 1, wherein a pair of spaced apart insulating disks each having a plurality of matching apertures passing the signal cable and the shielding means are spaced apart to define the leak monitoring chamber with the resinous sealant members abutting the sides of the spaced insulating disks remote from the leak monitoring chamber.

Claim 6

The seal assembly specified in claim 1, wherein the shielding means comprises a plurality of spaced apart conductive wires radially equispaced from and about the signal cable.

Claim 7

The seal assembly specified in claim 5, wherein a second flexible, foraminous, conductive shielding means is provided about the spaced apart radially equispaced conductive wires, which second shielding means comprises a plurality of spaced apart radially equispaced conductive wires, and wherein the resinous sealant members extend outwardly and encompass the second shielding means.

Claim 8

An electrical penetration assembly in which electrically shielded cable is sealingly brought through a high temperature and radiation resistant member, wherein an inboard shielded cable including a central conductor and an outer conductive shield and an outboard shielded cable including a central conductor and an outer conductive shield extend on opposite sides of a seal assembly portion of the penetration assembly, the improvement wherein the seal assembly portion comprises a signal cable extending longitudinally between the inboard and outboard shielded cables and electrically connected at its ends to the central conductors of the inboard and outboard shielded cables; a flexible, foramInous, conductive shielding means, through which resinous sealant may be readily passed, radially disposed about and spaced from the signal cable, which shielding means extends longitudinally between and is electrically connected at its ends to the conductive shields of the inboard and outboard shielded cables; two spaced apart, electrically insulating, resinous sealant members formed of in situ hardened resinous sealant disposed about the signal cable and filling the spacing between the signal cable and the shielding means, and encompassing the shielding means, with a leak monitoring spacing maintained between the spaced apart sealant members which each form a seal about and along the signal cable and the shielding means.

Claim 9

An electrical penetration assembly in which electrically shielded cable is sealingly brought through a high temperature and radiation resistant member, wherein an inboard shielded cable including a central conductor and an outer conductive shield and an outboard shielded cable including a central conductor and an outer conductive shield extend on opposite sides of a seal assembly portion of the penetration assembly, the improvement wherein the seal assembly portion comprises a signal cable extending longitudinally between the inboard and outboard shielded cables and electrically connected at its ends to the central conductors of the inboard and outboard shielded cables; a flexible, foramInous, conductive shielding means, through which resinous sealant may be readily passed, radially disposed about and spaced from the signal cable, which shielding means extends longitudinally between and is electrically connected at its ends to the conductive shields of the inboard and outboard shielded cables; two spaced apart, electrically insulating, resinous sealant members formed of in situ hardened resinous sealant disposed about the signal cable and filling the spacing between the signal cable and the shielding means, and encompassing the shielding means, with a leak monitoring spacing maintained between the spaced apart sealant members which each form a seal about and along the signal cable and the shielding means.

Claim 10

The electrical penetration assembly specified in claim 7, wherein each of the inboard and outboard shielded cables is a triaxial cable, and a second conductive shielding means is provided spaced concentrically about the flexible, foraminous conductive shielding means, and the second conductive shielding means is also a flexible, foraminous conductive means which extends between and is electrically connected to the outermost conductive shields of the triaxial inboard and outboard shielded cables, and the resinous sealant members extend radially outwardly and encompass the second shielding means.