# US 2018/0020795 A1 · Hair curler and method for using same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0020795 A1 - Document ID: US20180020795A1 - Status: Published application - Kind: A1 - Application number: 15/505,907 - Filed: 2015-08-21 - Published: 2018-01-25 - Earliest claimed: 2014-08-22 - Assignees: Kenford Industrial Co. Ltd. - Applicants: Kenford Industrial Company Ltd. - Inventors: Wai Ho Michael Keong - Web page: https://patentgrep.com/patent/US20180020795A1 ## CPC - A45D 1/04: by electricity - A45D 1/06: with two or more jaws (A45D1/02 takes precedence) - A45D 1/16: with a single heated member (A45D1/02 takes precedence) - A45D 2/12: Hair winders or hair curlers for use parallel to the scalp, i.e. flat-curlers (A45D6/14, A45D6/16 take precedence; with internal electric heating means A45D2/36; heating devices designed for use external to, and in connection with, hair curlers or hair winders A45D4/08) - A45D 7/02: thermal - A45D: HAIRDRESSING OR SHAVING EQUIPMENT (wigs, toupees or the like A41G3/00, A41G5/00; hairdressers' chairs A47C1/04; hair cutting appliances, razors B26B); EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING ## Abstract The present application provides a hair curler and a method using for same. The hair curler comprises a main body (1). The main body (1) comprises a first proximal end (2) and a first distal end (3); a first internal space (4) is formed inside the main body (1); a first elongated slot (6) communicated with the first internal space (4) is formed on the first proximal end (2); a first opening (8) of the first elongated slot (6) is formed on the first proximal end (2). The hair curler further comprises a first movable arm (7) movably disposed in the first internal space (4). A heating member for heating hair (33) is disposed on a slot wall of the first elongated slot (6) and/or the first movable arm (7). The hair curler is simple, practicable, safe and convenient. ## Claims ### Claim 1 A hair curler, wherein, the hair curler comprises main body (1), and the main body (1) comprises a first proximal end (2) and a first distal end (3); a first internal space (4) is formed inside the main body (1); a first elongated slot (6) communicated with the first internal space (4) is formed on the first proximal end (2); a first opening (8) of the first elongated slot (6) is formed on the first proximal end (2); the hair curler further comprises a first movable arm (7) movably disposed in the first internal space (4); a heating member for heating hair (33) is disposed on a slot wall of the first elongated slot (6) and/or the first movable arm (7). ### Claim 2 (depends on 1) The hair curler according to claim 1, wherein, a connecting member is further formed on the main body (1); the connecting member comprises a movable mechanical structure; the movable mechanical structure is a hinge structure (13); the first movable arm (7) is connected with the main body (1) through the hinge structure (13). ### Claim 3 (depends on 2) The hair curler according to claim 2, wherein, a side wall of the main body (1) at the first proximal end (2) is a main body outer wall (5) for cooling the hair (33); the main body outer wall (5) has a curved surface (27); when the heating member is working, hair (33) extending into the first elongated slot (6) is heated by the heating member to make hydrogen bond in hair (33) protein opened in the first elongated slot; the hair (33) is cooled down when leaving the first elongated slot (6), the hydrogen bond is reconstructed; the hair (33) is curled when contacting the main body outer wall (5). ### Claim 4 (depends on 3) The hair curler according to claim 3, wherein, the heating member comprises a heating surface (12) disposed on the first movable arm (7) and a heating element (28) which is connected on the heating surface (12) and is used for heating the heating surface (12); when the heating member is working, a temperature of the heating surface (12) is higher than a temperature of the main body outer wall (5); when the temperature of the heating surface (12) is higher than 180° C., the temperature of the main body outer wall (5) is at least 90° C. lower than the temperature of the heating surface (12), or the temperature of the main body outer wall (5) is lower than 50% of the temperature of the heating surface (12). ### Claim 5 (depends on 4) The hair curler according to claim 4, wherein, the heating member comprises a heating body (14) disposed on the slot wall of the first elongated slot (6); a heat insulation structure (15) is disposed in the main body (1); the heating body (14) is connected with the main body (1) through the heat insulation structure (15); when the heating member is working, a temperature of the heating body (14) is higher than the temperature of the main body outer wall (5); when the temperature of the heating body (14) is higher than 180° C., the temperature of the main body outer wall (5) is at least 90° C. lower than the temperature of heating body (14), or the temperature of the main body outer wall (5) is lower than 50% of the temperature of heating body (14). ### Claim 6 (depends on 2) The hair curler according to claim 2, wherein, the first elongated slot (6) extends from the first opening (8) to the first distal end (3), a bottom (9) is formed at an adjacent first proximal end of the first elongated slot (6) close to the first distal end (3); the hinge structure (13) is disposed between the bottom (9) and the first distal end (3); an axis of the hinge structure (13) is perpendicular to an extending direction of the first elongated slot (6); the first movable arm (7) is pivoted with the axis of the hinge structure (13) and forms a clip with the slot wall of the first elongated slot (6). ### Claim 7 (depends on 6) The hair curler according to claim 6, wherein, the hinge structure (13) further comprises a button (18); the button (18) is connected with the axis of the hinge structure through a connecting rod (181); the minimum distance between the slot wall of the first elongated slot (6) and the first movable arm (7) is at least 0.5 mm. ### Claim 8 (depends on 1) The hair curler according to claim 1, wherein, the hair curler further comprises a handle member (20) and a rotatable structure (21) rotatably arranged on the first distal end (3). ### Claim 9 (depends on 8) The hair curler according to claim 8, wherein, the first elongated slot (6) extends from the first opening (8) to the first distal end (3); the hair curler further comprises a second movable arm (10) movably disposed in the first internal space (4); the first movable arm (7) and the second movable arm (10) are fixedly connected with the rotatable structure (21) respectively. ### Claim 10 (depends on 9) The hair curler according to claim 9, wherein, a gap (56) is formed at the first opening (8) of the first proximal end (2); the gap (56) extends from the first opening (8) to the first distal end (3); an extending length of the gap (56) is shorter than an extending length of the first elongated slot (6). ### Claim 11 (depends on 8) The hair curler according to claim 8, wherein, the first elongated slot (6) extends from the first opening (8) to the first distal end (3); the heating member for heating the hair (33) is arranged on a first heating arm (77). ### Claim 12 (depends on 11) The hair curler according to claim 11, wherein, the first heating arm (77) is fixedly connected with the rotatable structure (21). ### Claim 13 (depends on 12) The hair curler according to claim 12, wherein, the first heating arm (77) extends out of the first internal space (4). ### Claim 14 (depends on 13) The hair curler according to claim 13, wherein, the hair curler further comprises a second heating arm (710) fixedly connected with the rotatable structure (21); the second heating arm (710) extends out of the first internal space (4); when the rotatable structure (21) is rotated, the first heating arm (77) and the second heating arm (710) are rotated relative to the main body (1). ### Claim 15 (depends on 11) The hair curler according to claim 11, wherein, a radial width of the main body (1) narrows from the first proximal end (2) to the first distal end (3). ### Claim 16 (depends on 11) The hair curler according to claim 11, wherein, a width of the first elongated slot (6) in the circumferential direction of the main body (1) from the first proximal end (2) to the first distal end (3) increases first and then reduces; the first opening (8) and the first heating arm (77) form an annular opening; the first opening (8) forms two proximal corners at the first proximal end (2). ### Claim 17 (depends on 11) The hair curler according to claim 11, wherein, the first heating arm (77) is cylindrical; the first heating arm (77) extends out of the first internal space (4); the main body (1) is connected with the rotatable structure (21); when the rotatable structure (21) is rotated, the main body (1) is rotated relative to the first heating arm (77). ### Claim 18 (depends on 16) The hair curler according to claim 16, wherein, a radial width of the main body (1) narrows from the first proximal end (2) to the first distal end (3). ### Claim 19 (depends on 16) The hair curler according to claim 16, wherein, the main body (1) comprises an inner wall (97); a convex bone (99) is disposed on the inner wall; the convex bone (99) extends from the first proximal end (2) to the first distal end (3). ### Claim 20 (depends on 16) The hair curler according to claim 16, wherein, the hair curler further comprises an external sleeve (51) coaxially disposed with the main body (1) and fixedly connected with the handle member (20); the external sleeve (51) comprises a second proximal end (52) and a second distal end (53); a second elongated slot (54) is disposed on the external sleeve (51); a second opening (58) of the second elongated slot (54) is arranged on the second proximal end (52); the second elongated slot (54) extends from the second proximal end (52) to the second distal end (53). ### Claim 21 (depends on 20) The hair curler according to claim 20, wherein, a width of the second elongated slot (54) in the circumferential direction of the external sleeve (51) narrows from the second proximal end (52) to the second distal end (53). ### Claim 22 (depends on 20) The hair curler according to claim 20, wherein, a radial width of the external sleeve (51) narrows from the second proximal end (52) to the second distal end (53). ### Claim 23 (depends on 20) The hair curler according to claim 20, wherein, the main body (1) is connected with the rotatable structure (21); when the rotatable structure (21) is rotated, the main body (1) is rotated relatively to the external sleeve (51). ### Claim 24 (depends on 23) The hair curler according to claim 23, wherein, the hair curler further comprises a motor disposed on the handle member (20) for driving the rotatable structure (21); the hair curler further comprises a rotating position detecting device disposed on the handle member (20) for detecting a rotating position of the rotatable structure (21) and a control component; the control component is electronically connected with the motor and the rotating position detecting device respectively and is for controlling the rotatable structure (21) to return to an initial position after the hair curler stops working. ### Claim 25 A method for using a hair curler, wherein, comprises the following steps: S1) proving a hair curler, the hair curler comprises a main body (1); a first internal space (4) is formed inside the main body (1); the main body (1)comprises a first proximal end (2) and a first distal end (3); a first elongated slot (6) communicated with the first internal space (4) is formed on the first proximal end (2); the hair curler further comprises a heating member disposed inside the first internal space (4); a side wall of the main body (1) at the first proximal end (2) is a main body outer wall (5) for cooling the hair (33); S2) the hair (33) comprises hair root (22) and hair trip (23); putting a portion of the hair (33) closing to the hair root (22) into the first elongated slot (6), then rotating the main body (1) to make the hair (33) wound on the main body outer wall (5); S3) then heating the portion of the hair (33) in the first elongated slot (6) by the heating member; moving the main body (1) in the direction of the hair trip (23); after separating from the first elongated slot (6), the portion of the hair (33) heated by the heating member contacts with the main body outer wall (5) to be cooled down to form a curled portion (24); an uncurled portion (25) of the hair (33) continues to be put into the first elongated slot (6) to be heated by the heating member; S4) repeating step S3 to curl the hair (33).