Patent Number: 6,252,210

Title: Electrical sleeve heater with built-in thermal sensor

Abstract: An electrical sleeve heater has an inner tube centered on an axis and formed with an axially extending and radially inwardly open cutout open at an axial end of the tube, an electrical heater coil wound around the tube, an outer tube engaged around the heater coil and tube, and an axially elongated thermal sensor probe having a sleeve and a pair of wires extending axially in the sleeve fitted in the cutout. The inner tube has substantially cylindrical inner and outer surfaces and the thermal sensor probe has a radial thickness smaller than a radial distance between the inner and outer surfaces.

Inventors: Schwarzkopf; Eugen (Ludenscheid, DE)

Assignee: Hotset Heizpatronen u.Zubehor GmbH

International Classification: B29C 45/73 (20060101); H05B 1/02 (20060101); H05B 3/42 (20060101); H05B 3/46 (20060101); H05B 003/44 (); H05B 003/58 (); F16L 013/02 ()

Expiration Date: 06/26/2018