Appliance for plucking hairs out of human skin

Information

  • Patent Grant
  • 6730099
  • Patent Number
    6,730,099
  • Date Filed
    Monday, November 22, 1999
    24 years ago
  • Date Issued
    Tuesday, May 4, 2004
    20 years ago
Abstract
The invention is directed to an appliance for the epilation of the human skin, having a housing to accommodate a motor and a drive mechanism for driving at least one clamping device (43) by which the user's hairs can be extracted. Moreover, a stimulus mechanism is to reduce the sense of pain during epilation. This mechanism includes at least one element (55) that is movable toward and away from the skin when the appliance is placed in epilating position on the user's skin. According to certain embodiments of the present invention, the at least one element (55) has a free end (56) and is arranged adjacent to the side of the rotary clamping device (43). In consequence, the user perceives at least subjectively a reduced sense of pain during epilation. Still further, a method for epilation and a method for the use of the appliance of the present invention are described.
Description




BACKGROUND OF THE INVENTION




This invention relates to an appliance for the epilation of the human skin, having a housing to accommodate a motor for driving at least one clamping device rotary about an axis for epilation, and having a means to reduce the sense of pain during epilation, said means including at least one element that is movable toward and away from the skin when the appliance is placed in epilating position on the user's skin. The invention relates in addition to a method for the epilation of the human skin.




An epilating appliance of this type and a related method of epilation are known from European patent application No. EP 493 849 A1. According to this patent application, the hairs are continuously entrapped and extracted by counter-rotating rollers. In front of the rollers are webs which lie flat on the skin during use and jointly perform a vibrating reciprocating movement. The frequency of this vibration can lie between 5 hertz and 1000 hertz. During use of the epilating appliance the vibrations of the webs engaging the user's skin are intended to produce a pain that overshadows the pain caused by the epilation. This should result at least subjectively in a reduction of the user's sense of pain caused by the actual epilation. In practice, however, it has shown that the actual stinging pain caused by the epilation is still perceived and felt as unpleasant by the user in spite of the use of these vibrating webs engaging the skin.




An epilating appliance according to the non prior published German patent application No. P 44 08 809 has a rotary cylinder with clamping devices that enable the cyclic entrapment and extraction of hairs. Provision is made furthermore for two electrodes enabling a stimulating current to be emitted to the skin. This enables stimulation of the underlying nerve structures, resulting in the at least subjective impression of a reduction of pain for the user.




SUMMARY OF THE INVENTION




It is an object of the present invention to provide an appliance and a method for the epilation of human skin as well as a method for using the appliance, whereby the epilation is performed more effectively and with the greatest possible reduction of the user's sense of pain.




According to the present invention, this object is achieved in an epilation appliance, and in a method wherein by reason of the fact that at least one element that is movable toward and away from the skin has one free end, a mechanical pulse can be generated to advantage, producing a stimulation on the skin which overshadows the actual pain during epilation. Furthermore, by arranging the at least one element, but in particular several elements, adjacent to the side of the rotary clamping device, the stimulation on the skin occurs advantageously before or during the epilating operation.




The pulse emitted before or during the actual epilating operation simulates artificially the pain otherwise caused by the epilation, being preferably of less intensity but having essentially the same pain characteristic, so that it overshadows or anticipates the actual pain. Because of the reduced intensity the additional pain is not felt by the user to be as disagreeable as the actual stinging pain caused by the actual epilation. On the contrary, practical tests have revealed that users of the epilating appliance hardly feel the actual stinging pain any longer as the result of the preceding pulse, but that instead they notice essentially only the far more agreeable stimulation caused by the respective pulse. This is probably owed to the fact that the nerve cells are practically paralyzed temporarily by the stimulation caused by the pulse and hence are insensitive to pain so that the actual stinging pain caused by the epilation is largely subdued, meaning that the user does not notice it at all or only to a weakened degree. On the whole, therefore, the pulse results in the user either not feeling or hardly feeling the actual stinging pain during epilation so that the sense of pain is substantially reduced.




The appliance and the method are optimized by delivering the pulse against or onto the skin directly before either the time or place or the time and place of the particular individual epilating operation because in this way the nerve cells that are about to be activated by the directly imminent epilating operation will be temporarily deadened or deactivated, so to speak, by the pulse performed ahead of the epilation in time and/or place.




In an advantageous embodiment of the present invention, the element is associated with the clamping device so as to be rotary about the axis thereof. Hence the element is set in rotation directly with the clamping device. There is no need, therefore, for any special components to drive the element.




In an advantageous further feature of the present invention, the element is movable toward and away from the skin. The pulse is thereby obtained mechanically in simple manner by the reciprocating movement of the element. This requires few additional components and therefore little extra manufacturing effort.




In an advantageous further feature of the present invention, the element is movable from a retracted position into an advanced position and hence into contact with the skin directly before epilation. This movement produces the desired pulse and hence the artificial pain in the skin. It is an advantage for this movement to be performed as close as possible to the epilation, and for the type and manner of the movement, particularly its acceleration and speed, to occur in the manner of a pulse. The pulse serves to create an artificial, weak pain that overshadows the actual stinging pain caused directly afterwards by the epilation and reduces the user's perception of this pain at least subjectively.




In an advantageous further feature of the present invention, the element is movable into the advanced position directly after the pulse is delivered to the skin. This ensures that the element is back in its starting position for the next epilating operation and able to trigger a new pulse onto the skin. The desired artificial pain is thus created by the pulse without this having any other adverse effects on the user.




According to the present invention it is particularly suitable for the element to be able to be urged back into the retracted position by the skin itself. This arrangement does not require any special components or the like. Instead, the element recedes automatically while delivering a pulse against or onto the skin as soon as it reaches the skin. It is an advantage for each individual clamping device of the appliance to be assigned one element for delivering a pulse. This approach represents an independent feature of the present invention.




In an advantageous aspect of the present invention in which the clamping device is able to perform a rotary movement with cyclic epilation, the element is coupled with the rotary movement of the clamping device and is arranged directly ahead of the clamping device viewed in the direction of rotation. In this simple way the element always delivers a pulse directly ahead of the time and position of each cyclic epilation by the clamping device. This is thus accomplished without any special additional components simply by the advantageous arrangement of the element in front of the clamping device viewed in the direction of rotation.




In an advantageous further feature of the present invention, the element is capable of adopting a retracted position which during a rotary movement has a diameter smaller than the maximum diameter of the clamping device, and an advanced position which during a rotary movement has a diameter greater than the maximum diameter of the clamping device. Hence during a rotary movement the element protrudes beyond the clamping device in its advanced position but not in its retracted position.




Particularly suitably, these two positions of the element are utilized for the following possible ways of generating pulses. A first possibility entails using the advanced position as a starting position and moving the element into its retracted position on striking the skin. The striking of the skin by the element represents the delivery of the pulse. Subsequently, the element is returned to its advanced position. A second possibility entails using the retracted position as a starting position and moving the element in the manner of a pulse into its advanced position directly before epilation. The desired pulse is thus produced and delivered to the skin by simple means. Subsequently, the element is returned to its retracted position. However, it will be appreciated that further possibilities of using the two positions of the element for the generation of pulses may be contemplated in the art.




In practice it has proven to be particularly suitable for the advanced position during a rotary movement to have a diameter which exceeds the maximum diameter of the clamping device by a value of between about 0.1 mm and about 6 mm.




In an advantageous aspect of the present invention, the element is movable by means of centrifugal force and/or spring force and/or cam tracks or the like. The reciprocating movement of the element between its retracted position and its advanced position is thus accomplished by simple means. A very precise control of the reciprocating movement of the element is accomplished in particular by the use of cam tracks.




In a further advantageous aspect of the present invention, the element has a pointed and/or a toothed and/or a bristled wheel and/or an accordingly formed roller or the like. This configuration has proven to be particularly advantageous in practice in particular for the above-described first possibility of producing pulses. In this case a toothed wheel, for example, is moved in the manner of a pulse from its retracted position to its advanced position with the aid of a cam track directly before epilation.




In another advantageous aspect of the present invention, the element has a protuberance and/or a point or the like and is resiliently coupled with the rotary cylinder. This configuration has proven to be particularly advantageous in practice in particular for the above-described second possibility of producing pulses. In this case the protuberance, for example, strikes the skin and creates the desired pulse following which it is urged back again by the skin from its advanced position into its retracted position.




In this connection it is particularly suitable in accordance with the present invention for the protuberance or the point or the like to be mounted on a threading device for the hairs awaiting extraction.




In another advantageous embodiment of the present invention, the element performs an essentially rectilinear movement. Consequently, when the element strikes the skin it causes particularly good stimulation of the nerves. The essentially rectilinear movement of the element produces a pulse that is particularly well suited to create an artificial pain and hence overshadow the subsequent pain caused by epilation. A further advantage of the element's rectilinear movement is that such a movement can be produced and controlled easily but nevertheless exactly.




In an advantageous further aspect of the present invention, the element is lowered onto the skin in particular directly before or else during epilation and is lifted from the skin in particular directly upon striking the skin. This sequence of movements for the element has proven to be particularly suitable in practice. It ensures in particular that the pulse triggered by the element is very short and occurs invariably before or during epilation.




In an advantageous further feature of the present invention, the processes of lowering the element onto the skin and lifting the element from the skin are controlled by mechanical means. In this manner it is possible, therefore, to control the movement of the element exactly but nevertheless simply and economically.




In an advantageous further feature of the present invention, the element is coupled with the clamping device for control purposes. This also facilitates the control of the element. Furthermore, this coupling is a simple and economical way to drive the element.




In an advantageous further feature of the present invention, the element is of a ram-type configuration and has a point which strikes the skin. In this feature the element is therefore a simple, elongate component which in particular on account of its point is particularly well suited to produce the desired pulse and hence pain upon striking the skin.




In an advantageous further feature of the present invention, the element is associated with a drive shaft that operates to lower the element into contact with the skin and lift it off again. The movement of the element is generated and controlled simultaneously by means of the drive shaft. Conveniently, the drive shaft is thus assigned a dual function. This simplifies the entire construction of the element's drive and control mechanism and has a positive impact on manufacture and related costs.




In an advantageous further feature of the present invention, the drive shaft is configured in the manner of a crank and is coupled with the element. The element's drive and control mechanism is materially simplified in particular by construction of the drive shaft in the form of a crankshaft. Particularly suitably, the element includes a guide in which the drive shaft engages. Simple yet effective coupling of the element with the drive shaft is thus achieved.




In an advantageous further feature of the present invention, provision is made for gears, bevel gears or the like to establish connection between the drive shaft and the clamping device. These types of connection represent simple yet effective possibilities of coupling the drive shaft with the clamping device. Hence the element as a whole is coupled with the clamping device on the one hand via the gears or bevel gears or the like and, on the other hand, via the element's guide, which engages in the crank-type drive shaft. By this means the element is driven and controlled by the clamping device via the drive shaft.




In an advantageous further feature of the present invention, a plurality of elements are in juxtaposed arrangement approximately parallel to each other. Suitable elements can thus be provided across the full width of the clamping device, enabling corresponding pulses for reducing the pain to be produced wherever epilation takes place.




In this connection it is particularly suitable for the drive shaft to be arranged approximately parallel to the axis of the clamping device. This arrangement facilitates the coupling of the drive shaft with the clamping device, in addition to being advantageous with a view to the arrangement of the element or elements driven and controlled by the drive shaft.




In further advantageous features of the present invention, the element or elements are mounted for displacement in the longitudinal direction, and/or the drive shaft is rotatably mounted on the housing.




In an advantageous further feature of the present invention, the element delivers a mechanical pulse and/or an electrical pulse. The particular advantage of the mechanical pulse is that the element can be manufactured in a simple and economical way. Furthermore, this type of pulse generation is easy to understand by the user, which is an advantage for the user's acceptance of innovations. The advantage of the electrical pulse is that there is customarily no need for any moving components and that the pulse can be controlled easily by conventional electronic means.




Particularly suitably, the electrical pulse is generated on the epilating appliance of German patent application No. P 44 08 809 initially referred to by controlling the stimulating current in dependence upon the cyclic epilation, particularly by emitting a stimulating current in the manner of a pulse, in particular ahead of the place and/or time of each cyclic epilating operation.




German P 44 08 809 corresponds to U.S. Pat. No. 5,704,935.




In a particular further feature of the present invention, which can represent an independent solution to the object of the present invention, a method for the epilation of the human skin is proposed, in which a mechanical pulse is delivered to the user's skin by means of at least one element coupled with the drive mechanism of a clamping device for epilation, which pulse causes the user either not to feel the actual pain of the epilation or to feel it only as a pain of lower amplitude. Advantageously, the skin is struck with a free end of the at least one element which is arranged adjacent to the side of the rotary clamping device. On the one hand this results in the free end producing a stimulation on the skin that overshadows or at least reduces the pain of epilation. On the other hand the arrangement of the at least one element adjacent to the side of the rotary cylinder has the effect of enabling the stimulation to be generated on the skin ahead of the time and/or place of the epilating operation or during it. It is thus possible advantageously to effectively reduce the pain of epilation.




A method for the use of an appliance in accordance with the present invention is also proposed. This method entails placing the appliance on the user's skin to be treated and moving it over the skin in such a way that the means for reducing the sense of pain, in particular the free end of the at least one element, precedes the rotary clamping device for epilation viewed in the direction of movement. An advantageous application of the appliance enabling an effective reduction of the actual pain of epilation is thus provided.











Further features, advantages and application possibilities of the present invention will become apparent from the subsequent description of embodiments illustrated in more detail in the accompanying drawings. It will be understood that any single feature and any meaningful combination of single features described and/or represented by illustration form the subject-matter of the present invention, irrespective of their summary in the claims or their back-reference.




BRIEF DESCRIPTION OF THE FIGURES





FIG. 1

is a schematic perspective view of an epilation head of an embodiment of an epilating appliance of the present invention;





FIG. 2

is a schematic sectional view of a rotary cylinder for the epilation head of

FIG. 1

, showing clamping devices and elements for the generation of pulses;





FIG. 3

is a top view and a side view of a pointed wheel utilized as the element for the generation of pulses of

FIG. 2

;





FIG. 4

is a top view and a side view of a toothed wheel utilized as the element for the generation of pulses of

FIG. 2

;





FIG. 5

is a top view of juxtaposed wheels utilized as the elements for the generation of pulses of

FIG. 2

;





FIG. 6

is a schematic sectional view of the rotary cylinder of

FIG. 2

, including springs for moving the elements for the generation of pulses;





FIG. 7

is a schematic sectional view of the rotary cylinder of

FIG. 2

, including cam tracks for moving the elements for the generation of pulses;





FIG. 8

is a schematic view of the rotary cylinder similar to

FIG. 2

, showing a first embodiment of resiliently held protuberances in a top view and partly sectioned side views;





FIG. 9

is a schematic view of the rotary cylinder similar to

FIG. 2

, showing a second embodiment of resiliently held protuberances in top views and a partly sectioned side view;





FIG. 10

is a schematic perspective view of an epilation head of a further embodiment of an epilating appliance of the present invention;





FIG. 11

is a schematic side view of the epilation head of

FIG. 10

, viewed in the direction D of

FIG. 12

;





FIG. 12

is a schematic top view of the epilation head of

FIG. 10

, viewed in the direction A of

FIG. 11

;





FIG. 13

is a schematic sectional view of the epilation head of

FIG. 10

, taken along the plane B—B of

FIG. 11

; and





FIG. 14

is a schematic sectional view of the epilation head of

FIG. 10

, taken along the plane C—C of FIG.


11


.











DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS




The features described in the following with reference to

FIGS. 1

to


14


are suitable for use with an epilating appliance as disclosed in European Offenlegungsschrift (Published Application) No. 596 283 A1 and as it is herewith incorporated in the disclosure content of the present patent application by express reference.




This Offenlegungsschrift describes an epilating appliance for the epilation of the human skin, having a rotary cylinder which is rotatably mounted in a housing and can be driven by an in particular electric motor. The rotary cylinder has a plurality of clamping devices which in the activated operating condition perform a rotary movement together with the rotary cylinder, cyclically entrapping and extracting those hairs of the user's skin that are turned toward them.





FIG. 1

shows an epilation head


1


of an epilating appliance of the present invention. This head has a housing


2


in which there is an opening


3


that can be turned to face the user's skin. Inside the opening


3


are a plurality of clamping devices


4


which project out through the housing


2


. The clamping devices


4


are arranged side by side in a row


5


. On either side of this row


5


are a plurality of threading devices


6


which are arranged likewise in a row


7


,


8


and project out through the opening


3


. Each threading device


6


has an opening


9


through which an element for generating a pulse to be described in the following can protrude.




As becomes apparent from European Offenlegungsschrift No. 596 283 A1 and as will be described below at least in part, the epilation head


1


shown in

FIG. 1

can have not just a single row


5


of clamping devices


4


but several such rows. The same applies for the rows


7


,


8


of threading devices


6


, the number of rows of clamping devices


4


normally corresponding to the number of rows of threading devices


6


.





FIG. 2

shows a rotary cylinder


10


which is mounted in the housing


2


of the epilation head


1


for rotation about an axis


11


. The rotary cylinder


10


has three rows


5


,


12


,


13


of clamping devices


4


, which are arranged symmetrically in the direction of rotation


14


and project from the axis


11


in radial direction. Three rows


7


,


8


,


15


of threading devices


6


, which looking from above are arranged between the rows


5


,


12


,


13


of clamping devices


4


, are also provided.




Approximately between each of the three rows


5


,


12


,


13


of clamping devices


4


there is a single element


16


for generating pulses or a row


17


,


18


,


19


of elements


16


for generating pulses. The elements


16


are coupled with the rotary cylinder


10


, performing the rotary movement of the rotary cylinder about the axis


11


in the direction of rotation


14


. The elements


16


are arranged on the inside of the threading devices


6


and are able to project out through the openings


9


of the threading devices


6


. Each element


16


is arranged directly in front of the next succeeding clamping device


4


viewed in the direction of rotation


14


. Each element


16


is coupled with the rotary cylinder


10


in such a way as to be movable in a reciprocating motion in a straight line or curve in a direction


20


arranged essentially radial to the axis


11


. Hence each element


16


is movable approximately in the direction


20


toward and away from the skin


21


as soon as it is turned roughly toward the skin


21


.




This reciprocating movement of the element


16


includes a retracted position


22


and an advanced position


23


, with the direction of movement being reversed each time a limit point is reached. In a rotary movement of the rotary cylinder


10


and hence of the elements


16


, the outermost diameter


24


traversed by the elements


16


in their retracted position


22


is smaller than or equal to the maximum diameter


25


of the clamping devices


4


. Similarly the diameter


26


traversed by the elements


16


in their advanced position


23


is greater than the maximum diameter


25


of the clamping devices


4


. The diameter


26


traversed in the advanced position


23


exceeds the maximum diameter


25


of the clamping devices


4


by a value


27


of about 0.1 mm to about 6 mm.




With the epilating appliance switched on, the element


16


produces a mechanical pulse on the skin


21


in the form of a jolt or prick. Due to the arrangement of the element


16


directly in front of its related clamping device


4


viewed in the direction of rotation


14


, the pulse is delivered to the skin


21


directly ahead of the time and place of the epilation by the clamping device


4


. With the assignment of exactly one element


16


to one clamping device


4


, a pulse is delivered before each individual epilating operation. The generation of a pulse by the respective element


16


takes place once only for each individual clamping device


4


and each clamping operation.




To generate the pulse the element


16


in its advanced position


23


strikes the skin


21


, delivering as this occurs the pulse to the skin


21


. Directly upon striking the skin


21


the element


16


is returned to its retracted position


21


at least until the element


16


is no longer opposite or in engagement with the skin


21


. This is shown in FIG.


2


.




Where applicable, the element


16


can be made to recede to its retracted position


22


in that the element


16


is urged back by the skin


21


itself, for example, against the force of a spring or against the centrifugal force or the like. This is explained in the following in greater detail with reference to

FIGS. 5 and 6

.




Provided the element


16


protrudes in its advanced position


23


by only a small degree or marginally beyond the maximum diameter


25


of the clamping device


4


, it may be possible in certain cases to dispense completely with moving the element


16


to its retracted position


22


.




Alternatively it is possible for the element


16


to be moved from its retracted position


22


into its advanced position


23


directly before epilation. This represents a movement of the element


16


in the direction


20


toward the skin


21


, whereby a pulse is delivered by the element


16


to the skin


21


. Directly after the pulse is delivered the element


16


is moved back into its retracted position


23


and hence away from the skin


21


. This reciprocating movement of the element


16


can be generated by suitable cam tracks, for example, which act on the element


16


. This is explained below in closer detail with reference to FIG.


7


.




Various embodiments of the element


16


are shown in the

FIGS. 3



a, b


and


4




a, b


. It is possible, for example, for the element


16


to be constructed as a wheel


28


that has a point


29


on its circumference. In addition and/or alternatively, the wheel


28


can be constructed to include a plurality of teeth


30


whose free ends may be equipped with the points


29


. Further embodiments consist of correspondingly constructed rollers or the like. The diameter of the wheel


28


or the roller is conventionally significantly smaller than the maximum diameter


25


of the clamping device


4


.




Various embodiments for generating the reciprocating movements of the element


16


are shown in

FIGS. 5

to


7


.




According to

FIGS. 5

or


6


, it is thus possible for a single element


16


or a plurality of elements arranged, for example, in row form on a shaft


31


to be connected to the rotary cylinder


10


via springs


32


,


33


. Consequently, the elements


16


are urged into their advanced position


23


by spring force during a rotary movement of the rotary cylinder


10


about the axis


11


. As a result of the elements


16


striking the skin


21


, the elements


16


are urged back against the force of the springs


32


,


33


approximately parallel to the direction


20


into their retracted position


22


until the elements


16


are no longer opposite the skin


21


on account of the rotary movement.




In this arrangement, the spiral springs


32


in the embodiment of

FIG. 5

are arranged approximately parallel to the direction


20


while the leaf springs


33


in the embodiment of

FIG. 6

are arranged approximately transverse to the direction


20


. In both embodiments the spring force of the springs


32


,


33


acts radially outward approximately parallel to the direction


20


so that the elements


16


are always urged outward by the springs


32


,


33


approximately parallel to the direction


20


into the advanced position


23


.




In addition and/or alternatively, it is possible in accordance with

FIG. 7

to provide a cam track


34


with which the element


16


is coupled and by means of which the reciprocating movement of the element


16


is controlled. The cam track


34


results in the element


16


being moved approximately parallel to the direction


20


into the advanced position


23


directly before epilation. This occurs approximately when the element


16


is roughly opposite the skin


21


. Preferably the element


16


is moved into the advanced position


23


as quickly or suddenly as possible by a suitable construction of the cam track


34


. After the pulse is delivered the element


16


is moved back into its retracted position


22


by a suitable construction of the cam track


34


.




Other embodiments of the element


16


become apparent from

FIGS. 8 and 9

.




According to

FIGS. 8



a, b, c


it is thus possible for the element


16


to be configured as a protuberance


35


that is positioned on the free end


36


of a threading device


6


and hence connected to the rotary cylinder


10


. In this embodiment, at least the free end


36


of the threading device


6


is of a resilient configuration, for example by being made of a plastic material. In the normal state the protuberance


35


adopts the advanced position


23


. Upon contact with the skin


21


the protuberance


35


is urged back by the skin


21


itself against the resilient force into the retracted position


22


. Once the protuberance


35


is no longer opposite the skin


21


it is urged forward again by the resilient force into the advanced position


23


.




Alternatively it is possible in accordance with

FIGS. 9



a, b, c


for the element


16


to be constructed not as a protuberance


35


but as a point


37


, with bars


39


interconnecting the various points, and each point extends in radial direction through the opening


9


of the threading device


6


and is connected to the threading device


6


or other components of the rotary cylinder


10


via a resilient arm


38


. The arm


38


can be made of spring steel or a plastic material.





FIGS. 10

to


14


show an epilation head


40


for an epilating appliance as described initially with reference to European Offenlegungsschrift No. 596 283 A1. The epilation head


40


has a housing


41


with an opening


42


that can be turned to face the user's skin. A plurality of clamping devices


43


are inside the opening


42


and project out through the housing


41


. The clamping devices


43


are arranged side by side in a row. As described in European Offenlegungsschrift No. 596 283 A1, it is possible for the epilation head


40


shown in

FIGS. 10

to


14


to have not only a single row of clamping devices


43


but several such rows. For this case, as becomes apparent in particular from

FIG. 14

, the clamping devices


43


form a rotary cylinder


44


which is mounted in the housing


41


of the epilation head


40


for rotation about an axis


45


.




Two bearing blocks


46


,


47


in which the ends of a drive shaft


48


are rotatably mounted are secured to the housing


41


of the epilation head


40


. The drive shaft


48


is arranged approximately parallel to the clamping devices


43


and hence approximately parallel to the axis


45


of the rotary cylinder


44


.




The drive shaft


48


carries one gear wheel


49


,


50


directly next to each of the two bearing blocks


46


,


47


. The gear wheels


49


,


50


are non-rotatably fixed to the drive shaft


48


, projecting through openings


51


,


52


in the housing


41


into the interior of the epilation head


40


. Here the gear wheels


49


,


50


are each in meshing engagement with a cooperating toothed flange


53


,


54


non-rotatably connected to the rotary cylinder


44


and hence to the clamping devices


43


. This becomes apparent in particular from FIG.


13


.




The drive shaft


48


is configured in the manner of a crank and hence has non-axial components. In particular the drive shaft is formed by a crankshaft on the ends of which the gear wheels


49


,


50


are positioned as already described.




At least one element


55


is associated with the drive shaft


48


. In the present embodiment of

FIGS. 10

to


14


a total of eight elements


55


are associated with the drive shaft


48


. Each of the elements


55


has a ram-type, longitudinal appearance with a point


56


on a free end. In approximately middle position each of the elements


55


has a guide


57


of a U-shaped configuration. The non-axial components of the drive shaft


48


engage in these guides


57


.




The individual elements


55


are arranged approximately parallel to each other. In relation to the housing


41


the elements


55


are also approximately parallel to the housing's outer side. The points


56


of the elements


55


are arranged on the same side as the opening


42


in the housing


41


. The points


56


thus face the user's skin when the epilating appliance is in use. The arrangement and the length of the elements


55


are selected so that the points


56


of the elements


55


form approximately just about one plane with the clamping devices


43


of the epilation head


40


during use, thus enabling the points


56


to just about touch the user's skin. This becomes apparent in particular from

FIGS. 13 and 14

.




The drive shaft


48


, the gear wheels


49


,


50


and the areas of the guides


57


of the elements


55


are accommodated under a cover


58


secured to the housing


41


. In the cover


58


are bores


59


,


60


in which the elements


55


are slidably guided on either side of the guides


57


.




With the epilating appliance switched on, the rotary cylinder


44


performs a rotary movement about the axis


45


. The rotary movement is transmitted to the drive shaft


48


via the toothed flange


53


,


54


and the mating gear wheel


49


,


50


. The elements


55


are made to move up and down by the non-axial components of the drive shaft


48


and the guides


57


.




This movement occurs essentially in a straight line, proceeding approximately in the longitudinal direction of the elements


55


. The movement is oriented approximately transverse to the user's skin


61


. This becomes apparent in particular from

FIGS. 13 and 14

.




Due to an offset arrangement of the non-axial components of the drive shaft


48


it is possible to make the elements


55


perform mutually opposing up and down movements. This becomes apparent in particular from FIG.


10


.




The speed of the up and down movement of the elements


55


can be set by the numbers of teeth of the toothed flange


53


,


54


and the gear wheel


49


,


50


. The frequency of the up and down movement of the elements


55


preferably equals 30 hertz, approximately. It is also possible, however, for the frequency to be higher or lower.




Due to the arrangement of the elements


55


on the housing


41


, the up and down movement causes the points


56


of the elements


55


to land straight on the skin


61


when the epilation head


40


is placed on the skin


61


. This becomes apparent in particular from

FIGS. 13 and 14

.




The mechanical control of the elements


55


by means of the drive shaft


48


is configured in such a way that the points


56


of the elements


55


are lowered onto the skin


61


and hence strike the skin


61


directly before or during epilation by the clamping device


43


. A mechanical pulse thus acts on the skin


61


, producing an artificial pain that overshadows and consequently reduces the actual pain caused by the epilation. Further the control is configured in such a way that the points


56


of the elements


55


are lifted off the skin


61


again directly after striking it.



Claims
  • 1. A hair-removing device, comprising:a casing; a roller rotatably carried within said casing; a motor connected to said roller; hair-removing means for removing hair from a hairy surface, said hair-removing means being carried by said roller; and plural vibrating parts carried by said roller that are arranged and constructed to vibrate the hairy surface when said roller is rotating, wherein said roller comprises notches in an exterior surface that slidably hold said vibrating parts so that said parts extend radially outward due to centrifugal force when said roller is rotating.
  • 2. The device of claim 1, wherein said vibrating parts are generally elongate with a transverse extension and said notches comprise a shoulder that engages said transverse extension to prevent escape of said vibrating parts.
  • 3. The device of claim 2, wherein said transverse extension extends on a plurality of sides of an elongate portion of each said vibrating part.
  • 4. The device of claim 2, wherein the vibrating parts comprise portions that are generally elongate within a circumscribing cylindrical boundary.
  • 5. The device of claim 2, wherein said transverse extension extends on a plurality of sides of an elongate axis of the vibrating part.
  • 6. The device of claim 1, wherein said vibrating parts are in rows on an exterior surface of said roller.
  • 7. The device of claim 1, wherein said vibrating parts and said hair-removing means are in separate rows parallel to an axis of rotation of said roller on an exterior surface of said roller.
  • 8. The device of claim 7, wherein one of said rows of hair-removing means is between two of said rows of vibrating parts.
  • 9. A hair-removing device, comprising:a casing; a roller rotatably carried within said casing; a motor connected to said roller; hair-removing means for removing hair from a hairy surface, said hair-removing means being carried by said roller; and plural vibrating parts carried by said roller that are arranged and constructed to vibrate the hairy surface when said roller is rotating, wherein said vibrating parts are in rows on an exterior surface of said roller, wherein said vibrating parts displace transverse a rotary axis of said roller such that a number of said rows and a speed of rotation of said roller are chosen to provide a vibration speed of said vibrating parts at a preselected frequency when said motor is operating.
  • 10. The device of claim 9, comprising at least three of said rows.
  • 11. The device of claim 9, wherein said vibrating parts displace radially relative said roller axis.
  • 12. The device of claim 9, wherein said rows extend parallel a rotational axis of said roller.
  • 13. The device of claim 9, wherein a speed of vibration of said vibrating parts is in the range of 1 Hz to about 500 Hz when said motor is operating.
  • 14. The device of claim 9, wherein the speed of vibration of said vibrating parts is three times a rotational frequency of said roller when said motor is operating.
  • 15. The device of claim 9, wherein a speed of vibration of said vibrating parts is in the range of 1 Hz to about 500 Hz when said motor is operating.
  • 16. A hair-removing device, comprising:a casing, a roller rotatably carried within said casing; a motor connected to said roller; hair-removing means for removing hair from a hairy surface, said hair-removing means being carried by said roller; and plural vibrating parts carried by said roller that are arranged and constructed to vibrate the hairy surface when said roller is rotating, wherein said vibrating parts each have one free end and another end hinged to said roller along an axis substantially parallel to an axis of rotation of said roller so that said free ends pivot radially outward due to centrifugal force when said roller is rotating.
  • 17. The device of claim 16, wherein a speed of vibration of said vibrating parts is three times a rotational frequency of said roller when said motor is operating.
  • 18. The device of claim 16, wherein a speed of vibration of said vibrating parts is in the range of 1 Hz to about 500 Hz when said motor is operating.
  • 19. A hair-removing device, comprising:a casing, a roller rotatably carried within said casing; a motor connected to said roller; hair-removing means for removing hair from a hairy surface, said hair-removing means being carried by said roller; and plural vibrating parts that vibrate the hairy surface when said roller is rotating, each having a retained portion carried by said roller and a free end that moves radially outward due to centrifugal force when said roller is rotating, said retained portion being radially inward of the free end.
  • 20. The device of claim 19, wherein said roller comprises notches in an exterior surface that receive said vibrating parts so that said parts lie generally flush with the exterior surface.
  • 21. The device of claim 19, wherein said roller comprises notches in an exterior surface that receive said vibrating parts so that said parts lie generally flush with the exterior surface when the roller is static.
  • 22. The device of claim 19, wherein said roller comprises notches in an exterior surface that receive said vibrating parts so that said parts displace to lie generally flush with the exterior surface when the vibration members are contacting the hairy surface.
  • 23. A hair-removing device, comprising:a casing, a roller rotatably carried within said casing; a motor connected to said roller; hair-removing means for removing hair from a hairy surface, said hair-removing means being carried by said roller; and plural vibrating parts carried by said roller that are arranged and constructed to vibrate the hairy surface when said roller is rotating, wherein said vibrating parts each have one free end and another end hinged to a hinge support connected to said roller along an axis substantially parallel to an axis of rotation of said roller so that said free ends pivot radially outward when said roller is rotating.
  • 24. The device of claim 13, wherein a speed of vibration of said vibrating parts is three times a rotational frequency said roller when said motor is operating.
  • 25. The device of claim 13, wherein a speed of vibration of said vibrating parts is in the range of 1 Hz to about 500 Hz when said motor is operating.
  • 26. The device of claim 13, wherein said pivoting radially outward is due to centrifugal force.
  • 27. The device of claim 26, wherein a speed of vibration of said vibrating parts is three times a rotational frequency of said roller when said motor is operating.
  • 28. The device of claim 26, wherein a speed of vibration of said vibrating parts is in the range of 1 Hz to about 500 Hz when said motor is operating.
  • 29. A hair-removing device, comprising:a casing, a roller rotatably carried within said casing; a motor connected to said roller; hair-removing means for removing hair from a hairy surface, said hair-removing means being carried by said roller; and plural vibrating parts carried by said roller that are arranged and constructed to vibrate the hairy surface when said roller is rotating, wherein said vibrating parts each have one free end and another end hingedly disposed on said roller along an axis substantially parallel to an axis of rotation of said roller so that said free ends pivot radially outward when said roller is rotating.
  • 30. The device of claim 29, wherein a speed of vibration of said vibrating parts is three times a rotational frequency of said roller when said motor is operating.
  • 31. The device of claim 29, wherein a speed of vibration of said vibrating parts is in the range of 1 Hz to about 500 Hz when said motor is operating.
  • 32. The device of claim 29, wherein said another end is coupled to said roller.
  • 33. The device of claim 29, wherein said pivoting radially outward is due to centrifugal force.
  • 34. The device of claim 33, wherein a speed of vibration of said vibrating parts is three times a rotational frequency of said roller when said motor is operating.
  • 35. The device of claim 33, wherein a speed of vibration of said vibrating parts is in the range of 1 Hz to about 500 Hz when said motor is operating.
  • 36. The device of claim 33, wherein said another end is coupled to said roller.
  • 37. A hair-removing device, comprising:a casing, a roller rotatably carried within said casing; a motor connected to said roller; hair-removing means for removing hair from a hairy surface, said hair-removing means being carried by said roller; and plural vibrating parts carried by said roller that are arranged and constructed to vibrate the hairy surface when said roller is rotating, wherein said vibrating parts each have one free end and another end hinged to said roller along an axis substantially parallel to an axis of rotation of said roller so that said free ends pivot radially outward when said roller is rotating.
  • 38. The device of claim 37, wherein a speed of vibration of said vibrating parts is three times a rotational frequency of said roller when said motor is operating.
  • 39. The device of claim 37, wherein a speed of vibration of said vibrating parts is in the range of 1 Hz to about 500 Hz when said motor is operating.
Priority Claims (1)
Number Date Country Kind
195 21 585 Jun 1995 DE
Parent Case Info

This application is a continuation of application U.S. Ser. No. 08/996,991, filed on Dec. 12, 1997, pending, which is a continuation application of International Application PCT/EP96/02412, with an international filing date of Jun. 4, 1996.

US Referenced Citations (14)
Number Name Date Kind
4162675 Kawada Jul 1979 A
5041122 Schneider et al. Aug 1991 A
5084056 Eckel et al. Jan 1992 A
5190559 Gabion et al. Mar 1993 A
5197969 Visscher et al. Mar 1993 A
5261919 Niedertscheider Nov 1993 A
5346499 Garenfeld et al. Sep 1994 A
5507753 Iwasaki et al. Apr 1996 A
5704935 Pahl et al. Jan 1998 A
5810843 Iwasaki et al. Sep 1998 A
5893854 Bontoux et al. Apr 1999 A
5916222 Iwasaki et al. Jun 1999 A
6083233 Kreutz et al. Jul 2000 A
6165182 Caric et al. Dec 2000 A
Foreign Referenced Citations (21)
Number Date Country
44 08 809 Jun 1995 DE
0 287 976 Oct 1988 EP
290 119 Nov 1988 EP
0 386 327 Sep 1990 EP
442 419 Aug 1991 EP
467 733 Jan 1992 EP
0 493 849 Jul 1992 EP
0 596 283 May 1994 EP
622 033 Nov 1994 EP
671 136 Sep 1995 EP
0 760 219 Mar 1997 EP
0 795 283 Sep 1997 EP
0 807 388 Nov 1997 EP
2 690 819 Nov 1993 FR
2 690 820 Nov 1993 FR
2-279107 Nov 1990 JP
7-143910 Jun 1995 JP
7-289349 Nov 1995 JP
WO 9507638 Sep 1990 WO
WO 9603063 Feb 1996 WO
WO 9719613 Jun 1997 WO
Non-Patent Literature Citations (5)
Entry
SEB (Bontoux) French published Pat. Appln. 2 745 992 with Search Report, published Sep. 19, 1997.
JP07-289349, Patent Abstracts of Japan, published Nov. 7, 1995 (corresponds to above item AM).
JP07-143910 Patent Abstracts of Japan, published Jun. 6, 1995 (corresponds to above item AN).
JP4126103, Published Apr. 27, 1992, Patent Abstracts of Japan (vol. 16, No. 387 (C-0975)).
JP8140726, Published Jun. 4, 1996, WPI/Derwent Patent Abstract, Week 9632.
Continuations (2)
Number Date Country
Parent 08/996991 Dec 1997 US
Child 09/444643 US
Parent PCT/EP96/02412 Jun 1996 US
Child 08/996991 US