Heat-shrink tube

US7540776B2 · kind B2 · utility

Assignee

• Tyco Electronics Raychem GmbH · DE

Inventors

• Bernd Graeve · Neubiberg, DE
• Peter Greiner · Weingarten, DE
• Franz Josef Toerringer · Halfing, DE
• David Pearce · Slade, US
• Timothy Stephen Smith · Trowbridge, GB
• John David Stoker · Swindon, GB

Key dates

• Filing date: Nov 12, 2004
• Grant date: Jun 2, 2009
• Expiry date: Jan 23, 2025

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02G15/1806
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A heat-shrink tube for an electrical power cable comprises a sleeve having an insulating inner layer, a conductive outer layer and a thermoplastic mid-layer located between the inner and outer layers. The mid-layer is recovered by the application of heat thereto. The insulating inner layer is preferably comprised of an elastomeric material and the thermoplastic mid-layer is rigid and acts to retain the inner layer in a radially expanded state prior to its recovery.