Abstract: In a hair treatment device with a winding mandrel driven by a motor and used to wind up hair, the current used by the motor is led through a current limiter circuit in order to limit torque. The current limiter circuit comprises an operating stage and a safety stage. The safety stage is utilized to limit current if the operating stage fails.

Abstract: A hair drying device comprises a rotatable curling iron, a reversible motor for driving the curling iron, a reversing switch connected to the reversible motor for causing the motor to reverse its direction of rotation, and a hair dryer including an outflow nozzle for directing hot air produced by the hair dryer tangentially at hair wound upon the curling iron. The outflow nozzle is movable between first and second positions. The outflow nozzle and the reversing switch are coupled together so that the curling iron is caused to rotate in one direction when the outflow nozzle is in its first position, and in an opposite direction when the outward nozzle is in its second position. An electric circuit includes a first switch which is actuated directly by the reversing switch and a second switch which is actuated by the reversing switch after a predetermined time delay, preferably by an RC circuit.

Abstract: A switch for a hair drying device having a rotatable curling iron and a hair dryer comprises a switching member, first and second microswitches, and a supporting member, preferably including a resilient spring, for the switching member. The supporting member permits the switching member to undergo a planar movement and a tilting movement independently of each other. The planar movement brings the switching member into and out of engagement with the first microswitch, thereby switching the rotation of the curling iron on and off. The tilting movement brings the switching member into and out of engagement with the second microswitch, thereby turning the hair dryer on and off. Thus, the curling iron and the hair dryer are operated independently of each other.