Patent ID: 6054691
Filing Date: 2000-04-25
Classification: H05B

Abstract:
A band type electric heater having a generally cylindrical shape and further having an inner face and an outer face, said heater comprising:a) an electric heating element;b) first and second sheets of electrically insulating material respectively disposed on opposite sides of said electric heating element;c) a single piece elongated heat conducting shell having a generally annular shape comprising two lengthwise edge portions disposed on an inner face of said shell with said opposite ends of said shell disposed adjacent each other, said heat conducting shell substantially enclosing said sheets of said electrically insulating material and said electric heating element; and,d) a clamp for securing said heater around a tubular member with said inner face tightly in heat transfer relationship with said member, said clamp comprising a band or ring aligned with said edge portions for clamping said edge portions and tightly secured around said outer face.