Patent ID: 12232595

DETAILED DESCRIPTION OF THE INVENTION

The foregoing summary, as well as the following detailed description of certain embodiments of the present invention, will be better understood when read in conjunction with the appended drawings.

As used herein, an element or step recited in the singular and proceeded with the word “a” or “an” should be understood as not excluding plural said elements or steps, unless such exclusion is explicitly stated. Furthermore, references to “one embodiment” of the present invention are not intended to be interpreted as excluding the existence of additional embodiments that also incorporate the recited features. Moreover, unless explicitly stated to the contrary, embodiments “comprising” or “having” an element or a plurality of elements having a particular property may include additional such elements not having that property.

The invention provides hair curling devices that include a rotating member configured to wrap hair around a generally stationary heated barrel. Other embodiments of the invention include the use of a rotating heated barrel.

A feature of the invention is that the hairstyling apparatus includes a rotating member which comprises an axially-extending tab or protuberance, and a comb which is attached to the tab and comprises a plurality of teeth arranged along the longitudinal axis a of the hairstyling surface, wherein the teeth extend in a direction at an angle Ø from the longitudinal axis a. This allows the hair to be more evenly along the tab.

Generally, the hair is contacted with an elongated, stationary or rotating member. A distal end of the member terminates in at least one longitudinally extending tab or protuberance. In instances where more than one protuberance is present, the protuberances are spaced apart from each other along an arc defining a distal periphery of the rotating member. The protuberances may be symmetrically spaced with each other so as to catch approximately the same amount of hair. This would cause a more even winding of the hair about the surface of a heated barrel, described infra. However, asymmetric positioning of the tabs will still result in catching and winding of the hair. The aforementioned tabs are positioned radially from the barrel so as to provide a space between the tab(s) and the hairstyling surface to allow catching of hair caught by the tab, so also to prevent the hair from being compressed and trapped against the surface for an over-extended period. This open configuration (compared to a clamping curler, for example) also provides the option for one or more of the tabs to be overlaid with a comb, fluid-filled micro-applicator, etc.

FIG.1Adepicts an elevational view of an example hair curling device having a rotating member to curl hair around a heated barrel. (As described infra, the barrel may or may not also be rotating.)FIG.2Adepicts a top view of the example hair curling device shown inFIG.1A.FIG.3Adepicts a side view of an exemplary rotating member.FIG.4depicts a view of the example rotating member shown inFIG.3Aviewing from line4-4.

As shown inFIG.1A, a hairstyling apparatus100(suitable for imparting curls to hair) includes a heated cylindrical surface such as a generally cylindrical barrel102. A first proximal end109of the barrel is coupled to a distal end111of a handle104(the handle acts as a housing for various components). The proximal end of the handle104terminates in a power cord120, or an electrical charging port in the case of cordless versions of the device. The longitudinal axis of the barrel is coaxial with the longitudinal axis of the housing.

The barrel102defines a hairstyling surface132that in one embodiment does not rotate relative to (e.g., is not rotatably coupled to) the handle104. Rather the surface132provides an immobile cylindrically shaped surface around which hair can be wrapped and heated to create curls. The barrel102generally defines the aforementioned first proximal end109(shown in phantom dashed lines), a second distal end terminating in a heat insulating tip122, and a longitudinally extending surface between its two ends.

The barrel102typically includes a heating element103(e.g., a ceramic heating element), schematically shown inFIG.1in phantom, configured to heat at least a portion of the barrel102, such as the overlaying hairstyling surface132, to curl a user's hair. The heating element103, shown in the drawing as being positioned approximately midway between the first and second ends of the barrel, and may be encapsulated by the barrel102so as to be positioned below the barrel's surface132. This position prevents the heating element from physically contacting the hair or the scalp, and therefore overheating those structures. In such a configuration, the surface132is heated by the heating element103via thermal conduction.

A heat selection switch118(shown inFIG.2A) can be arranged along the handle, which is configured to enable one-handed operation to turn the device on or off and to select between one of several different heat settings, such as a high-temperature setting and a low-temperature setting. In the embodiment shown, the heat selection switch118is positioned proximal to the distal end111of the handle.

The barrel102is typically formed of a thermally conductive yet resilient material, such as a metal selected from the group consisting of aluminum, iron, steel, silver, their alloys, and combinations thereof. The thermally conductive yet resilient material is surrounded (e.g., coated or wrapped) with a material that is less thermally conductive than the barrel (e.g., a thermally non-conductive material) so as to prevent or minimize damage to the hair. Such less thermally conductive material may be a nonmetallic material selected from the group consisting of ceramic, glass, stone (e.g., Tourmaline), and combinations thereof.

The barrel102can be formed in various widths (e.g., diameters) based on the intended curls desired by the user. In some embodiments, the barrel102can have a cross-section or diameter that is about 0.375 inches to about 2.5 inches. Exemplary diameters range from about 0.5 inches to about 1.5 inches. In the example illustrated, the barrel102has a diameter of approximately 1 inch.

The aforementioned heat insulated cooling tip122is disposed at the free, exposed, second distal end of the barrel102. In some embodiments, the free distal end of the barrel is disposed opposite the handle. The cooling tip122can help to reduce the likelihood that the user will burn themselves with the barrel102, for example, by creating a physical barrier between the end of the barrel102and the user's head.

The free, exposed end of the styling device, comprising the exposed, distal end of the barrel, is typically free of hair-snagging housings or enclosures. That is, the free end of the barrel is typically unenclosed and open to the surrounding environment so that hair can be more easily captured and wrapped around the hairstyling surface. The resulting curled hair is then more easily slid toward the distal end of the device for removal. Otherwise, such housing or enclosures could create an obstruction that may make it more difficult for a user to easily remove hair from the styling device. For example, hair could get wound around one or more surfaces within any confines created by such an enclosure.

FIGS.1A and1Bshow an embodiment of the device wherein the entire tip122and at least the distal half of the barrel102axially extends beyond the distal end of any comb member134or protruding members142(in the shape of a tab) peripherally arranged about the proximal end of the barrel.

In some embodiments, at least a portion of the cooling tip has a width (e.g., diameter) that is larger than the barrel102to help keep the user from accidentally placing the sides of the barrel102on their head. The distal end of the larger diameter region may terminate in a radially extending flange, plate, wall, or similar barrier (not shown) to prevent hair from slipping off the end of the barrel.

A rotating member106is positioned between the first proximal end109of the barrel and the second distal end111of the handle104. The rotating member106is shown as a sleeve on the barrel. The rotating member106is rotatable relative to the hairstyling surface132of the barrel102and typically also the handle104as the handle104and the barrel102can be coupled to one another. As such, the rotating member is in rotating communication with the barrel and the handle.

In addition, the barrel102may rotate instead of the rotating member106, or in conjunction with the rotating member106. Further, the barrel102may rotate at the same speed (e.g., RPMs) as the rotating member106or at a different speed. For example, the barrel revolution rate may be slightly less than the rotating member rate so as to provide a more gradual curl to the hair, depending on user preference.

As shown schematically inFIGS.1A and1B, a drive motor107, which can be mounted in the handle104(e.g., in a motor holding chassis) is configured to rotate the rotating member106relative to the handle104and the barrel102. As such, both the handle and barrel remain motionless. Alternatively, the drive motor rotates the barrel102relative to the rotating member106.

FIG.1Cis a detailed view of a gear assembly for both the barrel102and the collar. The drive motor107comprises a motor axis113with a proximal end115attached to the motor and a distal end117terminating in a barrel rotating gear119. Intermediate the proximal end115and the distal end117is positioned a rotating member rotating gear121, such that the barrel rotating gear119and rotating member rotating gear121are coaxially arranged with each other and generally positioned along the longitudinal axis of the device. The barrel rotating gear119may have a smaller diameter relative to the rotating member rotating gear121so as to confer a slower barrel rotation speed compared to the rotating member rotation speed. Alternatively, or in addition, the RPM is controlled by the gear ratio and the number of gear teeth on each of the barrel rotating gear119and the rotating member rotating gear121.

The proximal end of the barrel102defines a first gear surface123adapted to mate with the barrel rotating gear.FIG.1Cdepicts the gear surface residing along the periphery of a medially facing surface of the interior of the barrel. Similarly, a medially facing surface of the rotating member106defines a second gear surface125adapted to mate with the rotating member rotating gear121.

The drive motor107is typically an electric motor (e.g., an AC or a DC electric motor). Electricity can be provided to the drive motor using a rotatable power cord120(e.g., a swivel power cord) communicating with the proximal end (i.e., heel end) of the handle.

As depicted inFIG.2A, directional switches114,116may cause the motor (and therefore the rotating member) to rotate in clockwise or counter-clockwise directions. For example, upon viewingFIG.2A, the directional switch114, when toggled by the user, may cause the rotating member106and or heated barrel102to rotate in that toggle direction, which in the drawing is upwardly. Conversely, directional switch116, when toggled downwardly, may cause the rotating member106and or heated barrel to rotate downwardly. Upon release, the switches may bias to neutral such that no rotation occurs unless the switches are continually toggled by the user.

FIG.2Bis a detailed view of the gear mechanism associated with the directional switches114,116. As with the other gear mechanisms, the gears in this mechanism are actuated by the motor axis113, which is rotated by the drive motor107. As such, a single motor axis113, and therefore a single motor, actuates all of the gears associated with this device.

Positioned inferior from the directional switch114,116is the gear mechanism of switches and comprises a curl dial rotating gear127and an internal gear129of the curl dial. The rotating gear127comprises a radially extending plurality of teeth circularly arranged to form a disk. The internal gear129is configured to matingly receive the teeth such that the internal gear comprises a medially facing, cylindrical surface with a topography of gear teeth.

An electrical circuit (e.g., a printed circuit board) can be arranged within the handle or another component to distribute electrical signals from the various switches to the drive motor107and heating element103.

While the handle104is illustrated as generally being a cylindrical member formed in line with the heated barrel102, other configurations are possible. For example, in some embodiments, the handle can be a pistol grip-like handle that is arranged at an angle (e.g., substantially perpendicular) relative to the heated barrel.

The hairstyling apparatus100can include any of various drivetrain components (e.g., gear systems or transmission devices) to convert the rotation of the motor into the rotation of the rotating member106, the barrel102, or a combination thereof. The drive motor (including any drivetrain components) can be configured to rotate the rotating member106at any of the various suitable speeds. For example, the drive motor can cause the rotating member106to rotate at about 10 rpm to about 300 rpm (and within that range e.g., about 20 rpm to about 100 rpm, e.g., or about 50 rpm to about 100 rpm). Bearing elements can be disposed between the rotating member106and the barrel102or handle104to help reduce and limit rotational friction so that the rotating member106can rotate more easily relative to the barrel102.

The rotating member106is typically configured to rotate relative to the barrel102(e.g., around the hairstyling surface) to receive (e.g., gather, grasp, retain, trap, grip, pick, or otherwise attach) hair and wrap the hair around the heated barrel102to be curled as it rotates. As illustrated inFIG.4, the rotating member106includes a rotating plate130and a hair holding tab110that extends axially from the rotating plate130generally longitudinally along the hairstyling surface132of the heated barrel102. As the rotating member106rotates around the barrel102, the holding tab110catches the hair to bias it toward and otherwise guide it against and around the barrel102so that the hair spirals around the barrel rather than just twisting or tangling. The tab may or may not extend over the entire length of the hairstyling surface132. In some embodiments, the tab110can have a length to extend from the rotating plate130along the hairstyling surface for about 0.1 inches to about 2 inches.

Comb Detail

As depicted inFIG.3A, the combing feature further comprises a comb member134that is attached to the tab110and extends axially along a substantial length of the tab110. In some embodiments, the comb member134can be reversibly attached to the tab110, such as removably received by the tab so as to overlay distal portions of the tab, for easy application and removal by the user. For example, a longitudinally extending base surface of the comb may be adapted to slidably communicate with longitudinally extending surfaces of the tab, wherein the comb base defines a cavity with a cross section slightly larger than the cross section of the comb to engage in a friction fit. Other reversible attachment means may be a snap-fit configuration.

The tab110is radially displaced from the hairstyling surface so as to provide space for other parts, for example, the comb member134. In some embodiments, the comb member134may extend substantially the full length of the tab110. In some other embodiments, the comb member134may extend along a part of the tab110, but shorter than the tab, for example, two-thirds of the full length of the tab110.

As illustrated, the comb member134comprises a plurality of comb teeth136that are disposed along the length of the hairstyling surface and extending at an angle └ to the longitudinal axis of the comb. The angle Ø is generally in a range between 10 and 170 degrees, for example, between 45 and 135 degrees, and also about 90 degrees. Generally, the teeth136can typically extend towards the hairstyling surface132while keeping spaced from the hairstyling surface132to provide adequate room for hair to fit between the comb member134and barrel102.

The length of the comb's teeth may be different from each other. Referring toFIG.3B, “d” defines a distance between the comb member and the hairstyling surface. “L” designates the length of the tooth. The range of the individual tooth length is defined as “0<L<d” such that during use, the hair resides in the gap between the distal end of each tooth and the hairstyling surface (i.e., d-L) while the hair is being wound onto the barrel. If the gap is larger, more hair goes into the gap easily. In this way, the user can save on hair styling time.

In some embodiments, the length of several comb teeth near the proximal end140of the comb member134(for example, tooth1,2,3inFIG.3B) could be the same length to make an even hair winding.

The space between the comb member and barrel accommodates the hair for styling, depending on the tooth length of the comb. Different comb teeth lengths may be employed depending on hair thicknesses and lengths. For example, longer teeth may be used when thinner hair or smaller volumes of hair are to be worked. The inventors envision that when the ends of the hair only are to be curled, a longer tooth comb may be utilized by the user. Shorter teeth may be used when thick hair is to be manipulated.

The comb teeth136increase the friction force with the hair and thus may catch the hair easily. The comb teeth136also form some partitions along the length of the hairstyling surface and thus prevent the hair from moving along the length of the hairstyling surface. Therefore, the hair can be evenly disposed. The comb teeth136extending towards the hairstyling surface132also press the hair against the hairstyling surface132. Thus, the heat can be effectively transferred from the hairstyling surface onto the hair.

The comb defines a first proximal end140and a second distal end141. As illustrated, the lengths of the respective comb teeth136become gradually longer in a direction from the distal end141of the comb member134towards the proximal end140or bottom of the comb member134. This makes the space between the comb member134and the hairstyling surface132greater at the distal end141than the proximal end140. It facilitates the user to position a bundle of hair into that space from the end141. It also facilitates the tab to catch the hair, press the hair against it, and wrap the hair around the hairstyling surface132. In other embodiments, the comb teeth may have consistent lengths. In yet other embodiments, the comb teeth may have other forms of varying length. For example, the center teeth may be longer than the teeth at either end. In other examples, the tip of the teeth may form a profile such as a wave-like form.

In some embodiments, the comb teeth have varying lengths such that at least one tooth leaves a space between its tip and the styling surface while at least one other tooth contacts the styling surface. In this case, the comb teeth are made of a material with some degree of elasticity, such as, silicone, rubber, and plastics. The teeth, especially longer ones that contact the surface, will deform and thus exert a force pressing the hair against the hairstyling surface. In yet other embodiments, all the teeth may extend to be within a close spatial relationship with the styling surface (but not touching the surface) or even touch the styling surface to apply greater force to the hair against the styling surface.

As illustrated, the comb member134comprises a single row of comb teeth136arranged along the length of the hairstyling surface132. In some embodiments, the comb member134may comprise more than one row of comb teeth. For example, the comb may have a plurality of rows of teeth, such as 2, 3 or 4 rows of teeth. The plurality of rows may be arranged to define a brush. In yet other embodiments, the comb member134may comprise a plurality of comb teeth that may not necessarily align with each other either in the length or the width of the tab. Further, the teeth may not align necessarily straight but define a curvature along the length of the comb. This allows the user to impart different shapes to the wound hair on the barrel. As such, different comb configurations defined by deviations along the longitudinal comb axis are part of the styling device.

In some embodiments, the comb teeth can extend from the tab110not medially but rather in a direction away from the hairstyling surface132. For example, as depicted inFIG.3C, additional comb teeth overlying the tab may extend radially, and in a direction away from the hairstyling surface such that the tab is positioned between the originally medially extending teeth136, and the additional comb teeth. In this example, the comb member134may still have the hair disposed more evenly along the length of the hairstyling surface132.

Blade Detail

The invention facilitates styling small or large bundles of hair. At least one of the axially extending protruding members of the device may be the same length, longer, or shorter in length than the tab. These additional axially extending members may support a medially directed blade144(also having a similar appearance to a fin) adapted to catch, contact, or otherwise engage a small bundle of hair around the hairstyling surface and press the hair against the hairstyling surface.

FIG.3Afurther depicts such a blade144, medially directed toward, and therefore opposing a surface of the heated barrel102. As described more fully, infra, the blade may extend the length of the heated barrel102and define a straight continuous distal edge. Alternatively, the fin may create a serpentine surface wherein longitudinally extending portions of the fin are convex while adjacent portions are concave. In instances where more than one serpentine blade is used, the blades are attached so as to be in registration with each other such that concave portions align along the radial arc of the curling surface. Similarly, the convex portion may also lie in registration with each other. This may help in imparting a wave, or waves to the hair.

FIG.3Dshows a mechanism for enabling the comb member134to slide toward (i.e. medially) or away (radially) from the heated barrel102. (This view and the one inFIG.3Ehas the device rotated 180 degrees about its longitudinal axis relative to the views ofFIGS.3A-C.) In one embodiment, just the comb would move relative to the tab110. In this configuration, a spring135or a plurality of springs are positioned between the comb and the tab. As more hair is gathered between the comb and the heated barrel102, the springs135are compressed to make way for more hair. Upon exiting the space between the distal tips of the comb and the barrel102surface, the spring(s) decompresses, causing the comb to advance toward the barrel102surface. In another embodiment, both the comb and the tab would move.

The comb depicted inFIG.3Dis spring biased toward the heated barrel via the spring135. Generally, the spring is disposed in a direction orthogonal to the longitudinal axis of the comb. The spring135is shown proximal to the base of the comb with a first end biased in a radial direction and contacting the base of the comb. A second end of the spring is therefore biased in a medial direction and contacts a surface that is immobile, relative to the base of the comb.

Furthermore, the comb member134is not physically attached to the rotating plate130, such that only the comb moves radially or medially.

FIG.3Edepicts a comb featuring its proximal end in hinged communication with the rotating member proximal to the base of the barrel. A torsion spring137is depicted and adapted to bias the comb to a position that is generally parallel with the longitudinal axis a of the barrel. As such, and as with the wire spring135depicted inFIG.3D, the torsion spring137is positioned proximal to the base of the heated barrel. A first end of the spring is embedded or otherwise attached to the base or proximal end of the comb member134, while a second end of the spring is attached to a stationary structural support circumscribing the proximal end of the barrel102.

One torsion spring is positioned at the bottom part of comb. When a large bundle of hair is wound on the barrel, the comb is leaned with an angle to the inside of the tab and holds the large bundle of hair. When a user finishes hair styling, the comb moves to the original position by the restoration force of the torsion spring, this feature provides a means for eliminating the need for the user to pull back the comb with her free hand. Rather, hair styling can commence in a normal way with a bundle of hair pushing or otherwise moving the comb. The comb is attached to the tab in another embodiment, and the combination leans an angle.

As illustrated inFIG.4, the rotating member106further comprises two protruding members142extending from the rotating plate130and along the longitudinal axis a of the hairstyling surface132. Each of the protruding members142may support the aforementioned blade144, extending medially along the length of the hairstyling surface132so that their tips oppose the hairstyling surface132. (The protruding members142may also help to catch hair and direct and guide it against and around the barrel102so that the hair spirals around the barrel rather than just twisting or tangling.) The blade144further presses the hair against and around the barrel102. The blade144is made of a reversibly deformable (i.e., non-rigid or semi-rigid) material with some degree of heat resistance and flexibility, such as silicone, rubber, or plastic. The blade144therefore allows a range of hair amounts to spiral around the barrel. For example, the blade144may simply flex more when there is more hair between the protruding members142and the hairstyling surface132. This flexibility allows the blade144to press the hair with elastic force against the hairstyling surface132. The heat can be more efficiently transferred onto the hair from the hairstyling surface132. In some cases, the blade144with elasticity may even protrude to contact with the hairstyling surface132so that to press more firmly hair against the hairstyling surface132. In some embodiments, the rotating member106may comprise one protruding member or more than two protruding members. (The protruding members142are extended from the rotating member106) In some embodiments, at least one of the protruding members do not support a blade. In other embodiments, a blade144may be combined with a comb member134.

As illustrated, the protruding members142is typically shorter than the tab110. The protruding members142with shorter length is more efficient in catching a smaller bundle of hair. In some embodiments, the protruding members142may have a length that is from one-third to two-thirds of the length of the tab110. In some other embodiments, the protruding members142has a length that is substantially the same as or even longer than the length of the tab110.

The protruding members142and the tab110are arranged evenly along a circumferential direction of the hairstyling surface132. When two protruding members142are provided, the two protruding members142are spaced from each other for an angle of between about 10 degrees to 270 degrees, and within that range, for example, from 30 degrees and 180 degrees, for example, about 120 degrees. Each of the protruding members142is spaced from the tab110for an angle of 120 degrees. Therefore, the two protruding members142and tab110are spaced from each other and will not interfere with each other. In some other embodiments, the protruding members and the tab can be arranged unevenly.

As described supra, the rotating member106comprises one or more hair retaining elements disposed around a peripheral region of a rotating plate. The retaining elements catch the hair when the rotating member rotates around the hair, further enabling the user to use the device with one hand.

The retaining elements may protrude from the rotating member106. The hair retaining elements are configured to receive a user's hair so that the hair can be wrapped around the styling surface for curling. However, the rotating member may further comprise radially extending ridges146(FIG.3A) that protrude from the rotating plate away from the hairstyling surface and extend along the longitudinal length of the hairstyling surface. As illustrated, the rotating member106includes one or more hair retaining elements, such as radially extending ridges146, configured to receive a user's hair (e.g., one or more hairs) so that the hair can be wrapped around the styling surface of the heated barrel102for curling. As such, the ridges are hair retaining elements.

FIGS.3A-3EandFIG.4depict six ridges as the radially extending ridges146distributed circumferentially around the perimeter region of the rotating member106, but fewer or more ridges may be employed. The radially extending ridges146are shown integrally molded with the rotating member106but alternatively may be removably attached to same. The radially extending ridges146extend along the length of the rotating member 1-6 surface and radially protrude from the exterior peripherally extending surface of the rotating member106. The ridges may come in pairs in which case a space may be disposed between adjacent ridges comprising a pair. This first space is smaller in arc distance than the space between pairs of ridges.

In an embodiment of the invention, the ridges exist in pairs to provide a means for catching hair in both directions (e.g., clockwise and counter-clockwise). When the rotating dial rotates in a clockwise direction, the hair is caught by a first ridge (R1) in the square-designated area. The other direction is vice versa, such that the hair is caught in the oval-designated area. The first space is smaller or larger in arc distance than the space between pairs of ridges. It should be noted that more than one ridge is not necessary if a single ridge has a proper size and enough area in both sides of it to catch the hair in both directions.

The radially extending ridges146enable the user to retain and wrap hair around the barrel102in a more uniform, even distribution. For example, the user may lightly grasp the handle104of the device, but with distal portions of hair lightly held between the handle and the user's hand. Prior to curling, the user positions proximal portions of the hair between the ridges.

As illustrated, every set of two of the radially extending ridges146are arranged between adjacent protruding members142and between the protruding member142and the tab110. Therefore, three sets two of radially extending ridges146are distributed substantially evenly around the rotating member. The spacing of adjacent radially extending ridges146create recess-like regions in which hair can lie and be retained. In some other embodiments, the radially extending ridges146can be simply arranged evenly around the rotating member.

Retaining elements formed along the rotating member can include any of the various types of features capable of catching or gather one or more strands of hair. For example, the retaining elements can include one or more hooks, recesses (e.g., semi-circular holes or other depressions), protrusions (e.g., knobs, pins, bristles, bosses), or any suitable combinations or these of other suitable elements.

The rotating member106together with the radially extending ridges146are typically longitudinally spaced away from the hairstyling surface of the barrel and more proximal to the handle104and, therefore, at the proximal end109of the barrel102. That is, the hairstyling surface can be positioned at the free, exposed end of the hairstyling device relative to the rotating member106. Such a configuration can enable the user to place the free end of the curling device towards their head so that the rotating member can gather the user's hair and wrap the free end of the hair around the heated barrel102. This causes the hair to be gathered using the rotating member and wound around the proximal end of the hairstyling surface and, therefore, at the end opposite the free or distal end of the hairstyling surface.

As aforementioned, the hairstyling apparatus100also includes directional switches114and116(e.g., toggle switches) that can be used to change the rotational direction of the rotating member106so that the user can create differently shaped curls.

FIGS.5and6schematically depict hair curling steps when a user is using one of the hairstyling apparatuses described herein (e.g., the hairstyling apparatus100). In some examples, the user may position the hairstyling apparatus against their hair with the cooling tip122directed towards their head. As depicted inFIG.5, hair can fall and lie along the rotating member area50B. As mentioned above, the retaining elements are typically distributed apart from one another to comb through the hair to limit or prevent tangling. The user may then cause head hair to be placed at the rotating member either by the action of gravity or manually, or by causing the rotating member to rotate. By keep rotating the rotating member around the hairstyling surface, the tab will catch the hair so as to wind the hair around the hairstyling surface. As the hair is wrapped around the hairstyling surface, free end regions of the hair are drawn through one or more regions of the rotating member and onto the styling surface.

After a period of time has passed and the hair is heated, the user can remove the hair curling device from their hair. As discussed above, since the hair is not directly grasped, pinched, or held by the rotating member or the barrel (e.g., as would be the case for a curling iron with a clamp), the user can typically just pull the hair curling device away from their head. While pulling the hair curling device away, the user may also press the directional switches114and116to facilitate the pulling and/or creating different curl shapes. When pulled away, the hair can typically become loosened from the barrel and slide through the retaining elements.

Referring toFIG.6, as the hair is wrapped around the hairstyling surface, the comb teeth136distribute the hair along the length of the hairstyling surface. The teeth also prevent the hair from moving along the length of the hairstyling surface, therefore, prevent the hair from tangling. The comb teeth136typically extend towards the hairstyling surface132, thus also press the hair against the hairstyling surface. Referring toFIG.6, as the hair is wrapped around the hairstyling surface, the blade144presses the hair against the hairstyling surface132.

A user can position a free end of a hairstyling surface (e.g., defined by a heated barrel) of a hairstyling device, such as the hairstyling apparatus100suitable for curling of hair, discussed above, in proximity to (e.g., at or near) the user's head. In some embodiments, the hair curling device (i.e., a longitudinal axis of the hairstyling surface) can be positioned substantially vertically next to the user's head. As illustrated, hair can be retained (e.g., gathered) within a rotating member of the hairstyling device. For example, hair can be gathered by radially extending ridges146of the rotating member, which act as hair retaining elements. As shown, the hair can be retained at the end of the hairstyling surface that is opposite the free end of the styling device.

In some cases, as the rotating member rotates, additional hair can be gathered and retained automatically by the retaining elements of the rotating member. Through the aid of the tab and the protruding members, the hair is wrapped around and pressed against the heated hairstyling surface. As the rotating member rotates, the tab and the protruding members extending from the rotating member can be used to press some or all of the hair against the hairstyling surface at the bottom end of the styling surface opposite the free end.

As the hair is wrapped around the hairstyling surface, free end regions of the hair can be drawn through one or more regions (e.g., retaining elements) of the rotating member and onto the hairstyling surface.

In some embodiments, the rotating member can continuously rotate about the barrel after the hair has been fully wrapped. In some cases, the rotating member can continue to rotate until the user releases the directional button (or presses a stop button) on the handle.

After a period of time has passed and the hair is heated, the user can remove the hair curling device from their hair. As discussed above, since the hair is not directly grasped, pinched, or held by the rotating member or the barrel (e.g., as would be the case for a curling iron with a clamp) or enclosed by a hair capturing housing or enclosure, the user can typically just pull the hair curling device away from their head. When pulled away, the hair can typically become loosened from the barrel and slide through the retaining elements.

Wrapping the user's hair around the barrel102in this manner, including winding the hair around the relatively stationary (i.e., non-rotating) barrel102using the rotating member106and pressing the hair against the barrel102using the tab and/or the protruding members can result in fewer snags, tangles, or pulled hairs during use. This enhanced performance is, at least in part, a result of the hair being pulled loosely by the retaining elements108and the holding tab110, neither of which tightly clamp onto the hair. In other words, when the rotating member106rotates to grip and rotate (e.g., twist, curl, wrap, spiral, or otherwise displace) hair (rather than clamping hair to the barrel and rotating it), the hair is guided around the barrel102and as it is formed into a spiral-like curl, it is tightened to the stationary barrel rather than a moving part, which could cause the hair to be pulled causing discomfort. Therefore, the rotating members described herein can typically reduce (or in some embodiments eliminate) the need for additional protection components such as clutches or sensor systems and make it easy for the users to create curled hairstyles.

Rotating Member Detail

FIGS.7A through7Eshow various views of the rotating member106.FIG.7Ashows the rotating member106in assembly with the holding tab110, the comb member134, the blade144, and the other axially extending protruding members142.

FIG.7Bdepicts the rotating member106only. This figure shows apertures143formed in longitudinally extending regions of the axially extending protruding members142. These apertures143are each adapted to removably receive a blade144. The aforementioned ridges146are also shown, and integrally molded with an externally circumscribing periphery of the rotating member106.

Separate blades144are depicted inFIG.7C. Viewed withFIG.7A, proximal regions145of the fins define a reversibly deformable periphery having a cross section identical to the cross section of the apertures143. The reversibly deformable periphery further defines a circumferentially extending groove adapted to be reversibly received by medially directed edges of the apertures143. This allows for a snap fit relationship between the apertures143and the blades144.

The blades144further define a distal portion147which provides medially directed contact points with the styling surface and therefore the hair disposed therebetween. The distal portion is wide enough to impose pressure on the hair, but not so narrow as to cut or otherwise damage the hair.

FIGS.7D and7Eshow the tab110and the comb member134, respectively. Viewed in conjunction withFIG.7A, the comb member134overlays the tab110, which in turn snap fits into an upwardly directed periphery formed by the rotating member106.

FIG.7Eshows that the comb member and the rotating plate are integrally molded as one body. It is assembled with the tab by sliding the comb part to the tab. The assembled part, [(tab+(comb & rotating plate)], is fastened to the rotating member by three bolts through the apertures139in the rotating plate. In one embodiment, the comb and the rotating member are separately molded as two parts. In this embodiment, the comb is assembled to the tab with two springs. This two-spring arrangement provides a means by which the comb can be moved into the hollow of the tab in a linear distance by a bundle of hair.

In another embodiment, related toFIG.3E, the comb can be installed in a leaning configuration, with an angle and the top part of the comb goes into the hollow of the tab. Here, the comb is separated from the rotating plate and assembled to the tab with a torsion spring and a hinge.

Viewed in conjunction withFIG.7B, portions of the rotating member defining axially extending apertures145lie in registration with the transversely extending apertures139to facilitate the fastening of the comb to the collar. The axially extending apertures may be threaded to accept threaded bolts or screws first slidably received by the transversely extending apertures139.

Alternative Embodiment

A side view of an alternative embodiment200of a hairstyling apparatus is depicted inFIG.8. The alternative embodiment200includes a main body210comprising a handle portion212, a hair manipulation portion214, and a heated portion216. As can be appreciated fromFIG.8, some of the portions overlap with each other. For instance, some elements of the hair manipulation portion214extend over the heated portion216. As the alternative embodiment200is described, it will be apparent that elements of the hair manipulation portion214also heat hair, in addition to the heating portion216providing the majority of the heat energy.

In the alternate embodiment200, a rotating member206includes multiple hair-holding tabs240. Each hair holding tab240extends axially from the rotating member206and generally longitudinally around the hairstyling surface232of the heated barrel202. As can be appreciated fromFIG.9, each hair holding tab240can be of a different size. For example, in the embodiment200shown inFIG.9, one tab240is larger than the remaining two tabs.

The main body210includes movement buttons208, which rotate the rotating member206in the direction indicated on the movement buttons208. The main body210also includes at least one power button207and heating indicators in one embodiment.

While the embodiment shown inFIG.9shows three tabs240, other quantities of tabs are used in other embodiments. A benefit of the three-tab configuration ofFIG.9is that sufficient space remains between the components of the hair manipulation portion214to prevent the tangling of hair.

Each hair holding tab240is fixed in place, in one embodiment, and is constantly fixed with a fixed distance away from the hairstyling surface232of the heated barrel202.

Each hair holding tab includes an external surface242and an internal surface246. The internal surface246of each tab includes peripheral walls and a central indentation. In this way, the internal surface246comprises a holder for at least one rod248and a comb250on either side of the rod248.

Each rod248is in communication with the base plate. The base plate, in turn, transfers heat from the heated barrel202. As each rod248comprises a heat transferring material, such as metal, each rod248will likewise be heated as the heated barrel202heats up.

In one embodiment, each rod248is fixed to the base plate and its corresponding comb250. In another embodiment, at least one rod248rotates around an axis (shown in subsequent figures). The combination of the rod248and the comb250is adapted to arrange and organize hair passing through the device during styling.

A benefit of this embodiment200is that the rods248are in contact with the same heat source as the heated barrel202, and so the rods248do not require individual heating elements.

The rods248comprise a heat-transferring metal in one embodiment. The rods248comprise iron, aluminum, copper, and the like. In one embodiment, different rods248have different compositions, which results in each rod having a different temperature during the use of the embodiment200.

The rods248are attached to the internal surface246of the tabs by passing over a pin extending from the base plate in one embodiment. In another embodiment, the rods248are attached by snapping into the opening defined by the combs250.

As can be appreciated from the drawings, the rods248heat up along with the hairstyling surface232of the heated barrel202. Therefore, hair passing between the rods248and the hairstyling surface232will be heated from both sides. The combination of the rods248and combs250ensures that the hair passes through the device without being tangled up but also creates a more durable hairstyle in the hair.

The rods248, however, do not contact the heated barrel202. The source of the heat is the base plate, not the heated barrel202. This ensures that hair is not trapped by the device.

Turning toFIG.9, depicted therein is a top view of the embodiment200. As can be appreciated from the top view, the base plate226encircles the heated barrel. The rods248are placed on top of the base plate226and heat energy from the base plate226is transferred to the rods248.

Also visible inFIG.9is the central rod axis258of each rod248. In one embodiment, the central rod axis258of each rod248includes an aperture that receives a pin extending substantially perpendicularly away from the base plate226.

Also visible inFIG.9is the top surface203of the heated barrel202. In one embodiment, the top surface203comprises an insulating cover, which ensures that the top surface203is not as hot as the hairstyling surface of the heated barrel202.

FIG.10depicts the embodiment200as rotated around its central axis with a different tab240facing the viewer. A finger indentation266opposite of the movement buttons208on the main body210is visible inFIG.10. The rod248of the largest tab240is visible inFIG.10, as well.

FIG.11depicts a front isometric view of the embodiment200, showing the base plate226with the rods248installed on the base plate226. Also visible are the combs250associated with each rod248. As can be appreciated fromFIG.11, a space277exists between the rod248and the heated barrel202.

As can be appreciated fromFIG.11, the rotating member206includes at least one indentation217adapted to receive a holder, such as a wall mount (not pictured).

FIG.12depicts the embodiment200, which has again been rotated around its axis. Depicted inFIG.12are the base plate226, the rods248, the combs250. As can be appreciated inFIG.12, the largest rod248is not surrounded by combs, but rather a holder252, that holds the largest rod248in place. The holder252includes walls that flare out254in the direction of the heated barrel202, but are closer together near the tab240, thereby squeezing the rod248and keeping it in place.

In one embodiment, the rods248are removable so as to be cleaned. In another embodiment, the combs250and the holder252are sufficiently pliable that a cleaning apparatus, such as a brush, can clean their respective surfaces.

In one embodiment, the heating element includes a special cleaning mode that heats up the apparatus's components to facilitate a type of self-cleaning cycle.

FIG.13Adepicts another embodiment of a rotating member306. The rotating member306includes an additional hairstyling element received by one of the tabs308. In the depicted embodiment, a comb302is installed in at least one of the tabs308. The comb302is received between two protrusions310having one or more channels312and rounded bumps314. In one embodiment, the comb302is removable and replaceable by an end user. The comb302comprises a flexible material. In one embodiment, the comb302uses a mix of a silicone and a polymer, or silicone alone. In the depicted embodiment, the comb302engages frictionally with the protrusions310in one of the tabs308. In another embodiment, not shown, the comb302is integrally molded with one of the tabs.

As can be appreciated from the side view ofFIG.13B, the comb302comprises comb teeth316extending beyond the rounded bumps314.

The combination of the comb302, the one or more channels312and the rounded bumps314is adapted to separate and direct hair towards the heated barrel (not shown) without tangling the hair.

Another embodiment of the rotating member326is shown inFIG.14A. The rotating member326also includes at least one tab328having a flexible blade322installed therein as an additional hairstyling element received in at least one tab328. The flexible blade322is adapted to replace the comb302, in some embodiments. The flexible blade322is received between two protrusions330which include one or more channels332and rounded bumps334.

In one embodiment, the flexible blade322comprises a single piece. In another embodiment, the flexible blade322comprises multiple segments, such as a first segment322aand a second segment322bshown inFIG.14A. (Likewise, the comb302can also comprise multiple segments.) In one embodiment, the flexible blade322uses a mix of a silicone and a polymer, or silicone alone.

As visible in the side view ofFIG.14B, the flexible blade322extends a substantial portion of the total height of at least one tab328. As shown in the drawings, the flexible blade322has a tapered shape with one length324shorter than the length of the flexible blade322installed within at least one tab328.

The flexible blade322cooperates with the tab328to direct the hair towards the heated barrel (not shown) without applying excessive pressure since the flexible blade322is reversibly deformable and has a lower hardness than hair being manipulated by the device.

A further embodiment350is shown inFIG.15. In that embodiment, the rotating member356comprises only one tab358. The tab358includes one or more combs360, such as the silicon combs discussed herein. The tab358and the comb360direct the hair370towards the hairstyling surface362of the heated barrel364. As was the case with other embodiments, the heated barrel364extends from the main body365, in one embodiment.

FIG.16Ais another view of the embodiment350. Visible inFIG.16Ais the rotating member356and the tab358having the comb360. A second comb361is also partially visible inFIG.16A.

As can be appreciated from the view ofFIG.16A, the rotating member356includes a rounded segment366which follows the profile of the hairstyling surface362. The rounded segment is continuous, but terminates in a first hook368at the location of the tab358. The second hook is not visible inFIG.16A. In this way, the rotating member includes a semi-circular rounded segment366and at least a first hook368in proximity to the single tab358.

FIG.16Bis a top view of the embodiment350showing the first hook368and the second hook369. The two hooks are formed from the rounded segment366as the rounded segment366approaches the tab358. Also visible inFIG.16Bare the two combs360,361.

While the rounded segment366and the first hook368and the second hook369are shown in the drawings as separate elements, this is for clarity only. In use, the rounded segment366along with the first hook368and the second hook369comprise one continuous part of the rotating member356and may not be visible as separate elements.

A benefit of the embodiment350is the use of only one tab358, which decreases the possibility of hair entanglement. With multiple protrusions, hair being directed to the hairstyling surface362can be tangled. The single tab358which includes the combs360,361provides sufficient guidance to direct the hair to the hairstyling surface362without entanglement.

The use of only one tab358also decreases the overall size and weight of the embodiment350, making the device more portable. In one embodiment, the main body365(shown inFIG.15) includes a battery pack and the embodiment350is adapted to operate as a cordless hairstyling device.

A prong-bristle embodiment380is shown inFIG.16C. In addition to tabs389, the rotating member386includes modules382for bristles384. In one embodiment, the rotating member386includes at least one set of bristles384in a module382. Each bristle384includes a prong388and a cushion390. The bristles384are adapted to assist in directing hair towards the styling surface and away from the rotating member386. The bristles384are positioned at an angle c with respect to the edge of the rotating member386. In one embodiment, the bristles comprise a flexible material.

In the depicted embodiment, the rotating member386includes three tabs389and also three modules382. Each module382includes three bristles384. In at least one embodiment, at least one of the modules382is removable so that the rotating member386can be customized with different accessories.

In some embodiments, both the prong388and the cushion390comprise the same plastic material. In other embodiments, the cushion390comprises an anti-static material. In the depicted embodiment, each cushion390is shown as substantially spherical and about 50% wider than the supporting prong388. In at least some embodiments, each prong388tapers towards the cushion so that the prong388is thicker at the base and thinner at the cushion end.

Any of the embodiments shown in the drawings can be used to style hair. The method begins by providing a hairstyling apparatus which includes a barrel defining a hairstyling surface with a rotating member included at one end of the barrel. The rotating member is adapted to rotate around the central axis of the barrel. A heating element inside of the barrel is energized which heats the barrel. Hair is then directed around the barrel and towards the rotating member. The rotating member includes at least one tab and at least one hairstyling tool, each of which redirects the hair. As the hair is exposed to the heated barrel, the hair is curled, achieving a variety of hairstyles.

Although exemplary implementations of the invention have been depicted and described in detail herein, it will be apparent to those skilled in the relevant art that various modifications, additions, substitutions, and the like can be made without departing from the spirit of the invention and these are therefore considered to be within the scope of the invention as defined in the following claims.

It is to be understood that the above description is intended to be illustrative, and not restrictive. For example, the above-described embodiments (and/or aspects thereof) may be used in combination with each other. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. While the dimensions and types of materials described herein are intended to define the parameters of the invention, they are by no means limiting, but are instead exemplary embodiments. Many other embodiments will be apparent to those of skill in the art upon reviewing the above description. The scope of the invention should, therefore, be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. In the appended claims, the terms “including” and “in which” are used as the plain-English equivalents of the terms “comprising” and “wherein.” Moreover, in the following claims, the terms “first,” “second,” and “third,” are used merely as labels, and are not intended to impose numerical requirements on their objects. Further, the limitations of the following claims are not written in means-plus-function format and are not intended to be interpreted based on 35 U.S.C. § 112, sixth paragraph, unless and until such claim limitations expressly use the phrase “means for” followed by a statement of function void of further structure.