Hair Styling Device for Curling or Waving Hair and Method for Operating Such a Hair-Styling Device

Abstract

A hair-styling device serves to curl or wave hair. Said hair-styling device comprises two styling bodies 5, 5.1, which interact with each other to style the hair and can be rotated about the longitudinal axis of the styling bodies and of which at least one of the styling bodies 5, 5.1 is driven, which styling bodies 5, 5.1 have a shell surface contoured by elevations and recesses and are arranged in relation to each other in such a way that complementary contours of the two styling bodies 5, 5.1 mesh in the course of rotation of the two styling bodies. The styling bodies 5, 5.1 have a bone-shaped cross-sectional geometry having two head sections 7, 7.1 designed with a shell surface 8 that is convexly rounded at least in some sections and having a tapered central section 6 located between the head sections and designed with a concave shell surface. The radius of curvature in the region of the central apex 9 of the head sections 7, 7.1 of the one styling body 5, 5.1, 5.2 corresponds to the radius of curvature of the tapered central section 6 of the other styling body. The axis of rotation 11, 11.1 of the styling bodies (5, 5.1) is arranged in the central section 6 centrally between the central apexes 9 of the head sections 7, 7.1.

1 - 16 . (canceled) 
     
     
         17 . A hair-styling device for curling or waving hair, comprising:
 two styling bodies, which interact with each other to style the hair, which may be rotated about their longitudinal axis and of which at least one of the styling bodies is driven,   which styling bodies have a shell surface contoured by elevations and recesses and are arranged in relation to each other in such a way that complementary contours of the two styling bodies mesh in the course of rotation of the two styling bodies,   wherein the styling bodies have a bone-shaped cross-sectional geometry having two head sections designed with a shell surface that is convexly rounded in one or more sections and having a tapered central section located between the head sections and designed with a concave shell surface,   wherein the radius of curvature in the region of the central apex of the head sections of the one styling body corresponds to the radius of curvature of the tapered central section of the other styling body, and that the axis of rotation of the styling bodies is arranged in the central section centrally between the central apexes of the head sections.   
     
     
         18 . The hair-styling device of  claim 17 , wherein the thickened head sections have a width, said width corresponds to a multiple of the width of the central section. 
     
     
         19 . The hair-styling device of  claim 17 , wherein the head sections of the styling bodies in an area of their central apexes have a larger radius of curvature than in an area of their side apexes. 
     
     
         20 . The hair-styling device of  claim 18 , wherein the head sections of the styling bodies in the area of their central apexes have a larger radius of curvature than in an area of their side apexes. 
     
     
         21 . The hair-styling device of  claim 17 , wherein the styling bodies carry a hair contact functional part in their head sections in the area of the apexes of an transition from the convexly rounded shell surface to the concave shell surface of the central section. 
     
     
         22 . The hair-styling device of  claim 21 , wherein the hair contact functional part is a hair entrainer which is adapted according to its material properties. 
     
     
         23 . The hair-styling device of  claim 21 , wherein the hair contact functional part is a care substance applicator. 
     
     
         24 . The hair-styling device of  claim 22 , wherein the hair contact functional part is a care substance applicator. 
     
     
         25 . The hair-styling device of  claim 17 , wherein both styling bodies have the same cross-sectional geometry and an same cross-sectional size. 
     
     
         26 . The hair-styling device of  claim 17 , wherein the styling bodies when rotating about their axis of rotation may be moved past each other, without any mutual contact. 
     
     
         27 . The hair-styling device of  claim 17 , wherein both styling bodies, in order to be rotatably driven, are connected to a gear which is driven by a common motor. 
     
     
         28 . The hair-styling device of  claim 17 , wherein the hair styling device has arms, wherein each arm carries on its side directed towards the other arm a styling body, and wherein said arms are pivotally connected to each other to open and close the hair-styling device for inserting a hair strand. 
     
     
         29 . The hair-styling device of  claim 17 , wherein the styling bodies are made of a heat conducting material, such as an aluminum alloy, and wherein an electric heating element is disposed above the surface of their head sections. 
     
     
         30 . The hair-styling device of  claim 17 , wherein the styling bodies are made of a thermally conductive material, such as an aluminum alloy, and wherein each part housing the styling bodies has one or more radiating heat source. 
     
     
         31 . A method for operating the hair styling device of  claim 17 , wherein the styling bodies are driven according to a predetermined program with reference to their drive, and wherein a control program privileges a non-constant drive of the styling bodies. 
     
     
         32 . The method of  claim 31 , wherein the styling bodies are driven with an alternating slow and faster driving speed. 
     
     
         33 . The method of  claim 32 , wherein the styling bodies are driven intermittently. 
     
     
         34 . The method of  claim 33 , wherein the intermittent driving of the styling bodies is cycled according to 90°-positions of the styling bodies to each other and a drive interruption is performed in one or more of said 90°-positions.