Patent ID: 6215107
Filing Date: 2001-04-10
Classification: B29C,B29D,F16L

Abstract:
Heating coil fitting for connecting at least two installation elements (K1, K2), of which at least one is made of a synthetic material, with a fitting pipe (20) having a pipe wall (22) and which overlaps at least the two installation elements (K1, K2) to be connected to each other, and with at least one heating element (30) arranged at least in sections in the pipe wall (22) of the fitting pipe (20), wherein the pipe wall (22) of the fitting pipe (20) has at least in sections an inhomogenous assembly with at least a first material which at least breaks down during heating, wherein for the inhomogeneous assembly of the pipe wall (22) of the fitting pipe (20), at least a second material of cross-linked polyethylene is also provided which is subjected to a shrinking process during heating, wherein the heating conductor (32) forming the heating element (30), with respect to a cross-sectional plane containing the central longitudinal axis (M) of the fitting pipe (20), has a cross-sectional surface (A) whose extent in the direction of the central longitudinal axis (M) of the fitting pipe (20) is less than in the radial direction with respect to the fitting pipe (20).