Patent ID: 6066164
Filing Date: 2000-05-23
Classification: A41D,A61B,A61F,H03F,H05B

Abstract:
Heating device for heating or maintaining the temperature of a skin surface with a deep effect on a body zone of a human body, comprising:a heat transfer element;an energy supply device connected via an energy transfer device to the heat transfer element; anda control and switching device for controlling a power end stage so as to control energy supply to the heating element from the energy supply device, the control and switching device having an oscillating switching circuit for generating constant pulse signals, and an adjustable pulse modulation switching circuit for altering the pulse signals for controlling the power end stage;wherein the heat transfer element comprises a multilayered construction having a film-like base layer formed of a resilient and heat-insulating breathable material, and a heating element attached via an adhesive to an inner side of the base layer, the heating element including a fiber-reinforced resin film attached to the base layer, a heating conductor layer attached to the fiber-reinforced resin film, and a resilient microporous cover layer adhered to and covering the heating conductor layer.