GB2130880A - A hand-held curling iron for hair grooming - Google Patents

Abstract

A curling iron 12 comprises a handle 14, a heating element 16 a having an outer peripheral surface and a first end 30 adjacent to the handle 14 and a second end 24 spaced outwardly from the handle 14, and means which define a plurality of generally arcuately spaced grooves 28 extending longitudinally on the outer peripheral surface of the heating element 16. An attachment 10 comprising an annular frame 18 including a plurality of arcuately spaced support bars 36 is slidably engaged in the grooves 28. The frame 18 includes a first frame end 20 having an inner diameter at least equal to the inner diameter of the frame 18 and a second frame end 22 having an inner diameter less than the inner diameter of the frame 18 to abut against the end 24 of the heating element 16 and prevent sliding engagement of the frame 18 beyond the end 22. A fastener 26 removably secures the frame 18 to the heating element 16. <IMAGE>

Description

SPECIFICATION A hand-held curling iron for hair grooming The invention relates to a hand-held curling iron for hair grooming.

Curling irons are widely used to curl or otherwise style hair. To facilitate the use of curling irons in creating particular hair styles, curling irons typically include integral hair grooming assemblies such as hair clamping members which are used in forming small or "tight" curls or brushes which are used in forming large or "loose" curls and waves.

According to one aspect of the present invention there is provided a hand-held hair curling iron comprising a handle, an elongated heating element attached to said handle and having an outer peripheral surface, a first end adjacent to said handle, and a second end spaced outwardly from said handle, means defining a plurality of generally arcuately spaced grooves extending longitudinally on said outer peripheral surface between said first end and said second end, the grooves being axially open at said second end, hair grooming means comprising a body portion including a plurality of longitudinally extending bars slidingly and removably engaged in said grooves, and fastening means removably attachable to said second end of said heating element and including a surface which prevents removal of said bars from said grooves.

The outer peripheral surface of the heating element has a first diameter, and the grooves preferably have inner peripheral surfaces concentric with the outer peripheral surface and having a second diameter less than the first diameter. The hair grooming means preferably comprises an annular frame supporting the plurality of arcuately spaced support bars which are slidably engaged in the grooves. More particularly, the arcuately spaced support bars may have an outer diameter which is generally equal to the first diameter and an inner diameter which is generally equal to the second diameter.

The annular frame may include a first frame end having an inner diameter at least equal to the first diameter to accommodate the sliding engagement of the support bars in the grooves through the first frame end, as well as an oppositely spaced second frame end having an inner diameter less than the first diameter to prevent the sliding engagement of the support bars in the grooves beyond the second frame end and to thereby provide an abutting engagement between the second frame end and the outer end of the heating element.In this embodiment, the length of the annular frame is conveniently less than the length of the heating element, and the abutment between the second frame end and the outer end of the heating element preferably maintains the first frame end in a spaced relationship from the handle end of the heating element to permit heat expansion of the annular frame during operation of the curling iron.

In one embodiment the heating element has a hole formed in its second end, said fastening means includes a fastener threadably engageable in said hole, and when said fastener is threadably engageable in said hole, said second frame end is located between said fastener and said second end of said heating element.

The hair grooming attachment may include a hair clamping member pivotally attached on said annular frame and movable between a first position in which said hair clamping member extends at an angle from said annular frame and a second position in which said hair clamping member is closely adjacent to said annular frame.

The hair clamping member permits use of the curling iron to make small or "tight" curls.

In one embodiment the hair grooming attachment includes a plurality of bristles generally longitudinally spaced along each of said support bars and collectively forming a brush. The brush permits use of the curling iron to make large or "loose" curls. The brush, like the just described hair clamping member, is slidingly engaged on the heating element in common with the support bars.

Thus, a hair grooming attachment having a brush is freely interchangeable with a hair grooming attachment having a hair clamp, and a single curling iron can be used to form both large and small curls.

According to another aspect of the invention there is provided a hand-held curling iron comprising a handle, an elongated heating element attached to and extending from said handle and having an outer peripheral generally cylindrical surface, a first end adjacent to said handle, and a second end spaced outwardly from said handle, means defining a plurality of generally arcuately spaced grooves extending longitudinally on said outer peripheral surface of said heating element said first end and said second end, the grooves being axially open at said second end, a removable hair grooming attachment comprising an annular frame having an overall length less than the distance between said first and second ends of said heating element and including a plurality of arcuately spaced, longitudinally extending support bars slidingly engaged in said grooves, a first frame end fixed to one of the ends of said bars and having a central opening with a diameter at least equal to the diameter of said peripheral surface to accommodate sliding engagement of said support bars in said grooves through said first frame end, and an oppositely spaced second frame end fixed to the other of the ends of said bars and having a central opening with a diameter less than the diameter of said peripheral surface to prevent sliding engagement of said support bars in said grooves beyond said second frame end and to thereby provide an abutting engagement between said second end of said heating element and said second frame end, said heating element having a hole formed in its second end, a fastener threadably engageable in said hole and engageable with said second frame end to capture said second frame end between said fastener and said heating element second end and thereby prevent movement of said frame axially on said heating element when said fastener is threadably engaged in said hole.

One of the principal features of the invention is an attachment for the heating element of a curling iron, which attachment allows interchangeable use of different hair grooming assemblies in connection with a single curling iron.

A preferred embodiment of the invention will now be described with reference to the accompanying drawings, in which: Fig. 1 illustrates a hand-held curling iron provided with a hair grooming attachment having bristles forming a brush and which is slidably engaged upon the heating element of the curling iron; Fig. 2 illustrates the curling iron provided alternatively with a hair grooming attachment having a pivotally attached hair clamping member and which is slidably engaged upon the heating element of the curling iron and interchangeable on the heating element with the brush attachment shown in Fig. 1; Fig. 3 is an exploded view of the curling iron and a hair grooming attachment which is slidably engageable thereon; Fig. 4 is a sectional view of the grooming attachment taken generally along line 4-4 in Fig. 2;; Fig. 5 is a fragmentary sectional view of the grooming attachment and the related fastening means taken generally along line 5-5 in Fig. 1; Fig. 6 is a sectional view, partly broken away, of the grooming attachment taken generally along the line 6-6 in Fig. 5; and Fig. 7 is a sectional view of the grooming attachment taken generally along line 7-7 in Fig. 2.

Shown in the drawings is a curling iron 12 having a hair grooming attachment 1 0. The curling iron 12 generally includes a handle 14 and a heating element 1 6 extending from the handle 14 (as is best shown in Fig. 3). The element 16 is electrically operated to radiate heat, and the grooming attachment 10 generally serves to facilitate the use of the radiated heat to curl or otherwise style the operator's hair.

Referring first principally to Figs. 1, 2 and 3, the attachment generally includes a main body portion 1 8 which has an inner diameter sufficient to permit sliding attachment of the main body portion 1 8 upon the heating element 1 6. The main body portion 1 8 includes a first end 20 which has an inner diameter at least equal to the inner diameter of the main body portion 18 and an oppositely spaced second end 22 which has an inner diameter less than the inner diameter of the main body portion 18. By virtue of this construction, the first end 20 accommodates the sliding attachment of the main body portion 1 8 upon the heating element 16, while the second end 22 does not.Thus, sliding attachment of the main body portion 18 upon the heating element 1 6 is permitted only through the first end 20 (as shown in Fig. 3), and the sliding attachment thereafter progresses untii the second end 22 of the main body portion 18 reaches the outer end 24 of the heating element 1 6 (as shown in Figs. 1 and 2). The difference in diameters between the second end 22 and the outer end 24 (see Figs. 1 and 5) blocks further sliding attachment of the main body portion 1 8 beyond the second end 22.

As is best shown in Figs.1,2 and 5, fastening means 26 is engageable with the heating element 1 6 and the second end 22 of the main body portion 18 to secure the second end 22 between the fastening means 26 and the heating element 1 6 and thereby hold the grooming attachment 10 in place upon the heating element 16.

It should be appreciated that the hair grooming attachment 10 as just generally described is broadly applicable for use in combination with curling irons of various constructions, and the particular construction of the attachment 10 may be varied according to the design of the associated curling iron as well as the particular hair curling or styling function sought to be accomplished.

In the illustrated embodiment (as best shown in Fig. 3), the curling iron 12 includes a plurality of arcuately spaced grooves 28 extending longitudinally along the outer peripheral surface 32 of the heating element 1 6 between the handle end 30 of the element 1 6 and the outer end 24 thereof. As can best be seen in Fig. 7, the outer peripheral surface 32 of the heating element 1 6 has a first diameter dl, and the arcuately spaced grooves 28 have inner peripheral surfaces 34 concentric with the outer peripheral surface 32 of the element 16 and having a second diameter d2 which is less than the first diameter dl. it should be appreciated that the specific shape of the grooves 28 may be varied from that shown in the drawings.For example, the grooves 28 may take the form of a dovetail as well as any square, rectangular, or arcuate indentation formed in the outer peripheral surface 32 of the heating element 1 6.

In this embodiment, the main body portion 1 8 of the grooming attachment 10 forms an annular frame or cage (see Fig. 3) which includes a plurality of arcuately spaced support bars 36.

While the frame 1 8 may be constructed of various materials, it is preferably made of heat resistant plastic.

The number of support bars 36 is equal to the number of grooves 28. The bars 36 have an outer diameter (see Fig. 7) generally equal to the first mentioned diameter dl of the outer peripheral surface 32 of the heating element 16 and an inner diameter generally equal to the second mentioned diameter d2 of the inner peripheral surfaces 34 of the grooves 28.

By virtue of these generally matched inner and outer diameters of the heating element 16 and support bars 36, and as can be seen in Figs. 6 and 7, the support bars 36 slidingly engage the grooves 28. Furthermore, the outer peripheral surface 40 of the support bars 36 is generally flush with the outer peripheral surface 32 of the heating element 16, thereby enhancing the transfer of heat between the element 1 6 and the operator's hair. The outer peripheral surface 40 of the support bars 36 may be smooth, as is shown in the drawings, or it may be roughened or serrated to facilitate the holding of hair against the annular frame 18.

In this embodiment, the first end 20 of the annular frame 18 takes the form of a first annular member 42, also preferably made of heat resistant plastic, attached to the annular frame 1 8.

Preferably the first annular member 42 is molded directly to the annular frame 1 8, but the first annular member 42 may also be attached by glue (as is generally shown in Fig. 2) or by a plurality of pins 44 (as shown in Figs. 1 and 3) which extend through the first annular member 42 into the support bars 36. As is best shown in Fig. 4, the first annular member 42 has an inner diameter at least equal to the first mentioned diameter dl of the outer peripheral surface 32 of the heating element 1 6 and forms a collar which commonly encircles the flush outer peripheral surfaces 32 and 40 of the heating element 1 6 and support bars 36.

The second end 22 of the annular frame 18 takes the form of a second annular member 46, also preferably made of heat resistant plastic, attached to the annular frame 1 8. Like the first annular member 42, the second annular member 46 is preferably molded directly to the annular frame 18, but it may also be attached by glue or a plurality of screws 48 extending into the support bars 36 (see Figs. 5 and 6). As is best shown in Fig. 5, the second annular member 46 has an inner diameter which is less than the first mentioned diameter dl of the outer peripheral surface 32 of the heating element 16 and an outer diameter generally equal to the first mentioned diameter dl so that the second annular member 46 takes the form of a ring fastened in registry upon the frame 18.

Thus, as heretofore generally described, the first annular member 42 accommodates the sliding engagement of the support bars 36 within the grooves 28, whereas the second annular member 46 does not. The sliding engagement between the support bars 36 and the grooves 28 proceeds through the first annular member 42 until abutting engagement between the second annular member 46 and the outer end 24 of the heating element 1 6 occurs (as shown in Figs. 1 and 5).

As shown in Figs. 1 and 2, the length of the annular frame 18 is less than the length of the heating element 1 6 so that, when abutment between the second annular member 46 and the outer end 24 of the heating element 1 6 occurs, the first annular member 42 is located in a spaced relationship from the handle end 30 of the heating element 1 6. By virtue of this construction, heat expansion of the frame 18 is permitted during operation of the curling iron 1 2.

In the illustrated embodiment, the heating element 1 6 has an internally threaded hole 50 centrally formed in its outer end 24. The fastening means 26 takes the form of a plug-shaped member 52 having an outer diameter generally equal to the outer diameter dl of the heating element 1 6 and preferably made of a heat resistant material such as plastic or rubber. The plug member 52 includes an underbody portion 54 and an externally threaded pin 56 projecting downwardly from the center of the underbody portion 54. Rotation of the plug member 52 causes the pin 56 to threadably engage the hole 50, and the second annular member 46 is thereby sandwiched between the underbody surface 54 of the plug member 52 and the outer end 24 of the heating element 1 6.Movement of the annular frame 1 8 axially along the heating element 1 6 is thereby prevented. Also, by virtue of the engagement between the grooves 28 and the support bars 36, rotation of the grooming attachment upon the heating element 1 6 is likewise prevented.

It should be appreciated that the plug member 52 may be alternatively molded directly to the second annular member 46 to provide a heat resistant gripping surface to facilitate attachment and removal of the annular frame 1 8 upon the heating element 1 6. In this embodiment, the unitary annular frame 18 and plug member 52 may be held in place upon the heating element 16 by means of friction or by another suitable fastening mechanism, such as a spring-detent assembly (not shown).

As before mentioned, the particular structure of the hair grooming attachment 10 as just described may be varied to accommodate the particular curling or styling function desired. Just as there are numerous hair styles, there are numerous structural variations of the grooming attachment 10 which are possible. Two such variations are shown.

Referring to the first variation which is best shown in Figs. 2 and 4, the attachment 10 includes a hair clamping member 58 which is pivotally attached on the annular frame 1 8 for movement between a first position (shown in solid lines in Fig. 1) in which the hair clamping member 58 extends at an angle from the annular frame 18 and a second position (shown in phantom lines in Fig. 1) in which the hair clamping member 58 is located closely adjacent to the annular frame 18.

While the pivot point may be variously located, in the illustrated embodiment, the first annular ring 42 includes a pair of outwardly projecting shoulders 68 (as best shown in Fig. 4) upon which the hair clamping member 58 is pivotally attached. The hair clamping member 58, which may be of either plastic or metal unitary construction, includes an outwardly projecting arm 60 extending over the handle 14 of the curling iron 12 so that the operator may easily control the pivotal movement of the clamping member 58 simultaneously with operation of the curling iron 12.Preferably, and as is shown in Fig. 2, the outer tip of the clamping member 58 extends beyond the outer end 24 of the heating element 1 6 and over the heat resistant plug member 52, so that the operator is able to hold the outer tip of the clamping member 58 against the plug member 52 to maintain the clamping member 52 in its second position. The ciamping member 58 also includes a generally concave clamping surface 62 which fits in registry with the flush outer peripheral surfaces 32 and 40 of the heating element 16 and support bars 36 when the clamping member 58 is in its second position. The operator is thus able to hold his or her hair in place between the concave clamping surface 62 and the outer peripheral surfaces 32 and 40 during the application of heat. Such use of the hair clamping member 58 facilitates the forming of small or "tight" curls.

Referring next to the second variation which is best shown in Figs. 1, 5 and 6, the annular frame 1 8 includes a plurality of generally spaced outwardly projecting bristles 64. The bristles 64 are generally longitudinally spaced along each of the support bars 36 and collectively form a brush 66. Use of the brush 66 in combination with the curling iron 12 facilitates the making of large "loose" curls or waves.

It should now be apparent that through the interchangeable use of the two illustrated variations of the hair grooming attachment just described, a single curling iron is operable for creating a variety of hair curls and styles.

The arrangements described with reference to the drawings are also described in the Applicants' corresponding Application No. 8021565.

Claims (10)

1. A hand-held hair curling iron comprising a handle, an elongated heating element attached to said handle and having an outer peripheral surface, a first end adjacent to said handle, and a second end spaced outwardly from said handle, means defining a plurality of generally arcuately spaced grooves extending longitudinally on said outer peripheral surface between said first end and said second end, the grooves being axially open at said second end, hair grooming means comprising a body portion including a plurality of longitudinally extending bars slidingly and removably engaged in said grooves, and fastening means removably attachable to said second end of said heating element and including a surface which prevents removal of said bars from said grooves.

2. A curling iron according to Claim 1, wherein said outer peripheral surface of said heating element has a first diameter, wherein said grooves have inner peripheral surfaces concentric with said outer peripheral surface and having a second diameter less than said first diameter, and wherein said arcuately spaced support bars have an outer diameter generally equal to said first diameter and inner diameter generally equal to said second diameter.

3. A curling iron according to Claim 2, wherein the support bars are included in an annular frame, which comprises a first frame end having an inner diameter at least equal to said first diameter to accommodate the sliding engagement of said support bars in said grooves through said first frame end and an oppositely spaced second frame end having an inner diameter less than said first diameter to prevent the sliding engagement of said support bars in said grooves beyond said second frame end and to thereby provide an abutting engagement between said second end of said heating element and said second frame end.

4. A curling iron according to Claim 3, wherein the abutment between said second frame end and said second end of said heating element maintains said first frame end in a spaced relationship from said first end of said heating element.

5. A curling iron according to Claim 3 or 4, wherein said heating element has a hole formed in its second end, wherein said fastening means includes a fastener threadably engageable in said hole, and wherein, when said fastener is threadably engaged in said hole, said second frame end is located between said fastener and said second end of said heating element.

6. A curling iron according to Claim 3, 4 or 5, wherein said hair grooming attachment includes a hair clamping member pivotally attached on said annular frame and movable between a first position in which said hair clamping member extends at an angle from said annular frame and a second position in which said hair clamping member is closely adjacent to said annular frame.

7. A curling iron according to Claim 6, wherein said hair clamping member is pivotally attached on said annular frame adjacent to said first frame end.

8. A curling iron according to Claim 6 or 7, wherein said hair clamping member fits in registry with said annular frame when said hair clamping member is in said second pivotal position.

9. A curling iron according to any preceding Claim, wherein said hair grooming attachment includes a plurality of bristles generally longitudinally spaced along each of said support bars and collectively forming a brush.

10. A hand-held curling iron comprising a handle, an elongated heating element attached to and extending from sated handle and having an outer peripheral generally cylindrical surface, a first end adjacent to said handle, and a second end spaced outwardly from said handle, means defining a plurality of generally arcuately spaced grooves extending longitudinally on said outer peripheral surface of said heating element between said first end and said second end, the grooves being axially open at said second end, a removable hair grooming attachment comprising an annular frame having an overall length less than the distance between said first and second ends of said heating element and including a plurality of arcuately spaced, longitudinally extending support bars slidingly engaged in said grooves, a first frame end fixed to one of the ends of said bars and having a central opening with a diameter at least equal to the diameter of said peripheral surface to accommodate sliding engagement of said support bars in said grooves through said first frame end, and an oppositely spaced second frame end fixed to the other of the ends of said bars and having a central opening with a diameter less than the diameter of said peripheral surface to prevent sliding engagement of said support bars in said grooves beyond said second frame end and to thereby provide an abutting engagement between said second end of said heating element and said second frame end, said heating element having a hole formed in its second end, a fastener threadably engageable in said hole and engageable with said second frame end to capture said second frame end between said fastener and said heating element second end and thereby prevent movement of said frame axially on said heating element when said fastener is threadably engaged in said hole.