Electrical insulation tube
OwnerRavisekhar Rajuinventor
Life of this patent
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Abstract
An electrical insulating tube is provided which isolates at least one conductor placed within the tube and a second conductor or elements that are placed outside the tube. The tube comprises a first conductive coating or foil placed on the inner surface or within the insulating tube material but substantially near its inner surface with this first conductive coating or foil electrically referenced to the conductor placed within the tube. The tube optionally comprises a second conductive coating or foil placed on the outer surface or within the tube material but substantially near its outside surface with this second conductive coating or foil electrically referenced to a conductor or electrical element placed outside the tube. Several embodiments and methods to make the tube are described.
Claims7
An electrically insulating tube made by rolling a sheet,
- wherein the sheet comprises electrically insulating material, and
- wherein a conductive or semiconductive coating or foil is placed on a portion of the sheet at or substantially near an edge of the sheet prior to rolling, and
- wherein the rolling of the sheet is initiated at the said edge of the sheet such that the conductive or semiconductive coating or foil is positioned on the inner surface or substantially near the inner surface of the said tube.
An electrically insulating tube made by rolling a sheet of electrically insulating material,
- wherein at least one of the two surfaces of the sheet is coated with a semiconductive material or foil, and
- wherein the semiconductive material or foil on or near the inner surface of the tube is electrically connected or referenced to an electrical conductor positioned inside the tube thus placing the said coating or foil on the inner surface at substantially the same electric potential as the said conductor inside the tube, and
- wherein the coating or foil at or near the outer surface of the tube is electrically connected or referenced to an electrical conductor positioned outside the tube thus placing the said coating or foil on the outer surface at substantially the same electric potential as the said conductor outside the tube.
Dependencies are inferred from the claim text.