Patent ID: 8327900
Filing Date: 2012-12-11
Classification: B29C,B29K,F16L

Abstract:
1. An induction connecting sleeve for connecting weldable thermoplastic elements by means of fusion, with at least two sockets for the insertion of connection sections of the thermoplastic elements to be connected, and with induction heating elements embedded in the sockets, with operative sections of the induction heating elements being surrounded completely by a weldable thermoplastic material, and with the induction heating elements arranged coaxially to the sockets, wherein that the induction heating elements are made of a metallic material with spring characteristics and are placed under pre-tension in the thermoplastic material of the sockets, wherein thermoplastic material of the sockets is present between a contour of the induction heating elements and circumferential surfaces of the sockets being assigned to the connection sections, and the induction heating elements have inner diameters in a tension condition and also in a tension free condition that are greater than inner diameters of the sockets of the induction sleeve at positions of the sockets at which the induction heating elements are arranged.