Patent ID: 10980326

Abstract:
A hair straightener (HS) comprises a heating unit (HU) for heating hair while exercising a pressure on the hair, a temperature sensor (TS) for measuring a temperature of the heated hair to obtain a measured temperature, and a pressure adjustment unit (PAU) for adjusting the pressure exercised by the heating unit (HU) on the hair, in dependence on the measured temperature. The heating unit (HU) may comprise a pair of heating plates (HP1, HP2) between which hair is clamped, and the pressure adjustment unit (PAU) may be arranged for changing a distance between the heating plates (HP1, HP2). The pressure adjustment unit (PAU) may comprise a motor-operated push tool (W, C) for increasing the distance between the heating plates (HP1, HP2) when the measured temperature exceeds a first threshold temperature. The hair straightener (HS) may comprise a pair of hinged arms (A1, A2) each provided with a respective one of the heating plates (HP1, HP2). The pressure adjustment unit (PAU) may comprise a motor-operated pull tool (W, S), for decreasing a distance between the hinged arms (A1, A2) when the measured temperature falls below a second threshold temperature, whereby the distance between the heating plates (HP1, HP2) is reduced.