Patent Application
20080210252
The presently disclosed embodiments are directed to vibratory devices wherein gyratory movements are translated into pulses, typically for massage or cleaning, but in this case, for enhanced detangling of curled or unbrushed hair wherein brushing and detangling can occur with less effort and with less damage to the hair.
Vibrating brushes for human personal care are well known and are used where the vibration is intended to enhance brushing, cleaning or massaging effects. Vibrating hair brushes are also well known wherein a vibratory movement is applied to the bristles for an enhanced brushing or combing effect, and is usually also intended for a massaging effect to the scalp of the brushing user. For example, in U.S. Pat. No. 3,517,235 to Flowers et al., oppositely driven reciprocating hair brush units are intended to provide a brushing and massaging action whereby twisted hair is effectively unsnarled as the user traverses the hair with the brush. The brush disclosed herein is purported to provide improved efficiency in operation by effecting the counter-reciprocation of a pair of bristle units wherein the oppositely moving units are intended to effectively pull twisted hair apart as the brushing operation is performed. Unfortunately, such a reciprocating action has been found not to be as advantageous to a detangling operation due to its tendency to damage hair due to the shearing action of the simultaneously reciprocating bristle action.
Other vibrating brush embodiments generally include a singular brush wherein the bristles all move in common, but also include a vibratory movement having a component intended to move towards and away from the user's scalp to apply a beating and massaging action to the scalp. Over time, a beating motion to the scalp can become unpleasant to the user and provides only a limited effect in the actual detangling of the hair, having primarily a massaging purpose.
Yet another problem with most prior vibrating hair brush devices is the communication of the vibrations through the handle to the hand of the user. The hand can function as a substantial dampening force on the vibratory movement, thereby reducing its effectiveness, and also, over time, the absorption of the vibrations by the hand can become uncomfortable and unpleasant to the user.
Accordingly, there is a need for a vibrating hair brush for improved detangling of curled or twisted or knotted hair which operates in a selected plane for improved effectiveness in the detangling with minimum hair damage and which is comfortable to both a user's hand and scalp during operation.
According to aspects illustrated herein, there is provided a vibrating hair brush for enhanced detangling of hair. In this description, it should be understood that the term “brush” encompasses embodiments that might alternatively be described as combs. A head portion of the brush includes a motor assembly for operating a vibrating actuator and a plurality of bristles depending from a bristle pad. The actuator is disposed for generating a vibrating movement of the bristles in a curvilinear direction within a plane generally parallel to the bristle pad or tangential to the user's scalp. In one embodiment, the vibrating actuator comprises an offset weight rotating in a plane generally parallel to the bristle pad, although other embodiments that are also acceptable can include linkage driven actuators or cams, electromagnetic driven motion or a weight moved by electromagnets (instead of by a motor shaft).
The bristle pad is elastically supported by an isolator assembly configured to translate a movement of the actuator to an elliptical vibrating movement of the bristle pad. For the avoidance of doubt, the term “vibrating movement” should be understood to include an oscillating or reciprocating movement. The hair brush includes a handle extending from the head portion, typically in a direction generally within the plane of the bristle pad. In preferred embodiments, the elliptical movement has a longer elliptical axis in the handle axial direction than in the direction normal thereto. The isolator assembly insulates the head portion vibrations from the brush handle and the user's hand.
The vibrating movement is preferably in a frequency range between 20-200 Hz, more preferably between 20 and 100 Hz, and most preferably between 20 and 65 Hz.
Another feature of the embodiments is a method for detangling hair comprising brushing the hair with a brush having vibrating bristles operating in a frequency range between 20 to 200 Hz and disposed to vibrate in a curvilinear direction within a plane positioned generally parallel to an extending plane of a user's hair. Where the user's hair extends downwards from the head as a curved sheath, it will be understood that the bristles vibrate in a curvilinear direction within a plane positioned generally tangential to said curved sheath. The method preferably involves the bristles vibrating in an elliptical pattern having a first longer axis of movement in a direction perpendicular to a user's hanging or extending hair direction and a second shorter axis of movement parallel to the user's hanging or extending hair direction.
The subject embodiments of a vibrating hair brush provide a solution to the needs of better detangling hair with less effort and less damage to a user's hair while detangling. A positive experience is effectively provided to the user as a result of a less painful brushing operation for more enjoyable detangling of the hair than in previous systems. The hair is not being “ripped out” or damaged during the brush detangling, but is gently detangled with less pulling as a result of a lower frequency and gentler detangling operation with the subject vibrating detangling brush. The brush works out the tangles itself as a result of the particular vibratory movement, thereby avoiding the user having to substantially pull hair in an effort to accomplish the desired detangling. Hand fatigue is also substantially reduced during use.
With reference to
As will be discussed herein in more detail, the head portion B is intended to vibrate and such vibratory movements are insulated from the handle portion A so that the vibrations are diminished in translation to the handle and a user's hand. For the avoidance of doubt, the term “vibrating movement” should be understood to include an oscillating or reciprocating movement. Accordingly, a brush head upper housing comprising a top wall 14 is spaced from the handle as at area 16 to accommodate the vibratory movement without tapping contact to the handle portion A.
With reference to
An aspect of the subject embodiment includes the translating of the motor and weight circulatory vibratory motion into a curvilinear pattern, such as an elliptical movement, of the bristle pad in a particular plane of movement. An isolator elastomeric member 40 is affixed to the motor 20 and also affixed to the bristle pad assembly 10, 12, 14 so that the vibratory motion induced by the motor can be translated to the bristles 10. The motor 20 is received within a cavity 42 of the bristle pad head portion sized to allow receipt of the motor 20 and the rotational movement of the offset weight 22 that causes the desired vibratory movement. The vibrations created by the off center weight are transmitted to the brush head 14 due to the motor and weight assembly being connected to the brush head by hard, stiff connections. The isolators 40 allow this motion to exist by letting the head move mostly independently from the handle by close receipt of the isolator ring lobes 50 within mating lobe cutouts 52 and the clamping of the lobes within the cutout 52 by sandwiching the lobes between the brush head 14 and upper motor cap 56. The top wall 14 and cutouts 52 are affixed hard plastic pieces ultimately supporting the bristles 10. The particular configuration of the isolator 40 is such that the lobes are closely received within the cutouts 52 and a webbing 60 includes a slot 62 for close mating reception of cap cutout 64 of fastening cap 56. In addition, the end portions of the elastomeric lobes 50 and webbing 60 are also received within handle portion cutouts 70 so that the isolator 40 effectively isolates the vibratory movement of the head portion away from the handle portion A. As can be seen with reference to
Although in the illustrated embodiment, the isolator 40 is an elastomeric material, alternatives could include any spring structure capable of producing a similar result, such as an assembly of metal springs, plastic gaskets or other elastic members.
Another aspect of the elastic isolator 40 is that it is configured to translate the circular vibratory movement of the eccentric weight 22 into an elliptical movement in a plane generally parallel to the bristle pad. More particularly, it can be seen that the isolator 40 is not supported along the direction of the axis CC (
With reference to
Another aspect of the subject embodiments is that the vibratory movement is intended to operate in a frequency range generally lower than most prior art vibratory brushes. Empirical evidence has determined that highly effective detangling can occur with the vibrating bristles operating in a frequency range between 20-100 Hz and more preferably between 30-65 Hz, with the most efficient detangling of the hair, in terms of user effort required to pull the brush through hair, being either one of 42 Hz or 62 Hz. Thus, an improved method for detangling hair comprises brushing the hair with a brush having vibrating bristles operating in a frequency range between 20 to 100 Hz and disposed to operate in a curvilinear direction within a plane positioned generally parallel to a user's scalp, or possibly for longer hair (
With reference to
For hair that does not normally hang such as shown in
The subject embodiments have also been described with reference to the brushing of human hair, but the subject brush can also be employed to untangle other things such as animal or pet hair or even tangled strands of other materials than hair.
The exemplary embodiment has been described with reference to the preferred embodiments. Obviously, modifications and alterations will occur to others upon reading and understanding the preceding detailed description. It is intended that the exemplary embodiment be construed as including all such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
