FR2520601A1 - HOT WAX APPLICATOR ASSEMBLY FOR CLEANING AND METHOD FOR APPLYING SAID WAX - Google Patents

Abstract

THE INVENTION RELATES TO A SYSTEM FOR HEATING AND APPLYING DEPILATORY WAX TO THE SKIN, FOR DEPILATION. ACCORDING TO THE INVENTION, THE SYSTEM INCLUDES A WAX TANK 40 AND A DISTRIBUTOR 44 CONNECTED TO THE TANK; DEPILATORY WAX IS ESSENTIALLY SOLID AT ROOM TEMPERATURE BUT IT MAY FLOW WHEN IT IS HEATED; HEATED WAX FLOWS FROM TANK TO DISPENSER FOR APPLICATION; A ROLLER 46 APPLIES WAX IN A THIN COAT TO PREVENT PAIN AND BURNS. THE INVENTION APPLIES IN PARTICULAR TO HOT WAX DEPILATORS.

Description

The present invention is directed to an apparatus for removing pars

  by applying hot wax to the skin and, in particular, to an applicator system that stores and applies, safely and painlessly, a hot depilatory wax, to the skin, in sufficient layers

  thin to maximize the efficiency of hair removal.

  The applicator system includes a heating mechanism for heating the wax which is normally stored in a hardened state in an applicator to melt the wax

  for an application his, by the applicator, to the skin.

  Hair removal by applying a hot depilatory wax to the skin and removal of the wax from it after cooling is an accepted technique for effective and long-lasting removal of hair.

  as the wax hardens, a cloth is pressed against it.

  When the wax is hard, the fabric is removed and pulls the

  wax and hairs so taken, pores of human beings.

  The accepted commercial technique for removing hair by application of a depilatory hot wax is generally to heat a large amount of depilatory wax to a molten state in a large open tank The person tests the temperature of the wax by touching it In general, a competent person will apply the melted wax by dipping a spoon or stick applicator into the tub and collecting a drop of melted wax on the applicator and keeping the skin in the area where the hair is to be removed. wax because it drips and spreads while the applicator is removed from the tank Moreover, when the wax is heated to a molten state for application to the skin, it retains a high viscosity similar to that of molasses or thick honey, because of its properties Because of this property of high viscosity, the depilatory wax tends to be applied to the skin

in thick drops.

  It should be noted, however, that depilatory wax is like candle wax and so, when it is melted, it can cause various pains and burns of the skin if it is applied in thick drops. Moreover, the imprecise application of the melted wax using a spoon or a stick does not control, significantly, the thickness of the layer of wax applied and even thicker is the layer of wax applied, the less is the amount of hair removed

  when the wax is removed from the skin after curing.

  It is for these reasons that until now a safe and burn-free use of wax has been severely limited to the address of Institute staff who are trained and experienced, and are generally not available. for domestic use because of the severe burns and pains that can occur if the wax is improperly applied As a result, a hot wax epilator, which allows the depilatory wax to melt and which

  includes an applicator to apply a sufficient layer

  a thin layer of hot wax and melted on the skin, avoiding pain and burning and while being safe and

  effective for home use, is quite desired.

  In general, according to the invention, a hot wax epilator comprises an applicator having a reservoir for

  store a source of depilatory wax which is essential

  It is hard at room temperature and becomes viscous when heated to a sufficient temperature. A film dispenser is supported on the reservoir in fluid communication with it so that the wax, when heated to a low viscosity state, may flow through the dispenser for application of the wax to the skin, for depilation The dispenser is adapted to apply the hot wax and melted to the skin in a sufficiently thick layer, preferably between 0.1 and 0, 3 mm thick, so that the final temperature of the skin immediately after application of the wax is

  kept below 44 ° C, the temperature of the pain

  citd by the heat, so to pocket the pain and the

burning of the skin.

  In one embodiment, the dispenser is a cylindrical roll having a smooth surface on its

  The width of the roll is determined by the anato-

precise tweezers.

  In a preferred embodiment, a housing is provided, which contains three openings of different sizes to accommodate removable three applicators of different sizes. A large applicator is sized for application of the depilatory wax melted to the skin of the legs. An intermediate size applicator is dimensioned for application of molten depilatory wax to the skin of the body A smaller applicator device is sized for easy application of the depilatory wax melted to the facial skin The applicators, as described above, apply a thin and uniform layer of depilatory wax melted on the skin The

  thin layer of wax causes adhesion and shearing

  hairs to be concentrated at the skin-wax interface rather than interstitially in the thicker layer of wax

  which is applied with the known techniques.

  Accordingly, the subject of the present invention is

  an epilator perfected with hot wax.

  Another subject of the present invention is a hot wax epilator which is safe for use

  personal, domestic and professional.

  Another object of the present invention is a hot wax applicator device applying a sufficiently thin layer of hot depilatory wax and

  melted on the skin to prevent burns and pains.

  Another subject of the present invention is a hot wax epilator capable of heating the wax and considerably eliminating the risk of burning the skin by causing pain in the areas of the skin receiving

hot wax.

  Another subject of the present invention is an improved hot wax epilator for substantially increasing the efficiency and accomplishing

totally hair removal.

  The invention will be better understood, and other purposes, features, details and advantages thereof

  will appear more clearly during the description

  explanatory text which will follow with reference to the accompanying schematic drawings given solely by way of example illustrating an embodiment of the invention and in which FIG. 1 is a perspective view of a hot wax epilator constructed according to a preferred embodiment of the invention; Figure 2 is an enlarged sectional view taken along the line 2-2 of Figure 1; Figure 3 is a sectional view taken along the line 3-3 of Figure 2; Figure 4 is a sectional view taken along line 4-4 of Figure 2; FIG. 5 is an elevational view of the mechanism

  heating element used in the hot wax device

  shown in Figures 1 to 4, shown removed and spread out; FIG. 6 is a graph illustrating the final temperature of the skin, along the ordinate axis> as a function of the applied wax thickness, on the abscissa axis, to describe the characteristics of the hot wax epilator according to the invention; Figure 7 is a sectional view taken along line 7-7 of Figure 3; Figure 8 is a sectional view taken along the line 8-8 of Figure 3; and Fig. 9 is a partial elevational view of a dispensing head having a smooth roll surface according to an example of an embodiment of the invention. Referring first to Figures 1 to 4 o a hot wax depilation system, generally indicated 10, comprises a housing 12 having a unitary bottom and a side wall 16 defining an internal chamber generally indicated 18 and a wall The plurality of apertures 20, 24 and 26 are formed in the top wall 20 of the applicator devices 30-1, 30-2 and 30-3 are formed in three different dimensions for reasons described below, and they are placed removable in the chamber 18 and through respectively the openings 22, 24 and 26 It should be noted that the present invention is not limited to three applicator devices, and that it is illustrated with three applicators only

for exemple.

  Each of the three applicators 30-1, 30-2 and 30-3 is of similar construction, and it comprises a reservoir 40 adapted to contain a source of depilatory wax 39 and a dispensing head 44 As can be seen in particular in the figures 4 and 8, the reservoir 40 comprises a neck end 37 having an opening 42 at its top 43 where the depilatory wax may flow when it is

  melted as described below.

  The dispensing head 44 is hollow and contains an inner cross member 45 which defines an opening 45a which automatically adjusts into an annular recess 37a in the neck 37 to thereby removably secure the hollow interior of the dispensing head in fluid communication, through the opening 42, with the reservoir 40 The dispensing head 44 is defined by rounded shoulders, erect and face to face 47 a and

  a flat wiper wall 47 which defines an opening

  41 to receive a grooved roll or groove 46.

  As can be seen in FIG. 3, the roller 46 includes protuberances 49 at the ends 46a which are captured in blind holes 51 formed on the inner and opposite surfaces of the shoulders 47a The roller 46 is cylindrical and comprises a number of number of throats or

  axially oriented grooves 48 which are arranged peri-

  The flat wiper walls 47b are spaced apart from the outer radial dimensions of the grooves 48 by a predetermined distance to define a clearance of between 0.25 and 0.5 mm to be used as a wiping means to limit the wobble. thickness of the wax flowing on the roll. In one embodiment, the reservoir 40 is

  constructed of semi-polyvinyl chloride material

  transparent, which allows to see in the tank for

  determine the amount of depilatory wax in it.

  In general, in practice, two types of wax are used for purposes of hair removal, for the removal of hair, a hot wax or a cold wax The cold wax is rubbery at room temperature, while the hot wax is The depilatory wax according to the invention is a medium hard hot wax made from rosin or hydrous resinates and beeswax having a density of the order of 1.080 kg / l This wax is essentially

  solid and can not flow at room temperature.

  In one embodiment, a wax having 47% of triethylene glycol hydrogenated resinate, 46% of hydrogenated glyceryl resinate and 7% of beeswax will give a wax having the characteristics described herein although these values are given only as an example When it is heated to a sufficient temperature of the order of 660 C, this wax can flow freely and yet it remains hard at the

ambient temperature.

  Heaters 50, 52 and 54 are con-

  truits into a heat-transmitting metal and they are

  provided in the housing 12 in alignment with the openings

  The heating mantles 50, 52 and 54 are coupled to each other by plates 55 to define a unitary structure and are dimensioned to receive the applicators 30-1, 30- 2 and 30-3 Legs 56 and 58 extend from the ends of the unitary structure defined by the coupled sleeves 50, 52 and 54 and are received in slots 60 and 62 defined by the side wall 16 Slots 60 and 62 are designed to guide the heating sleeves in alignment with the

  respective openings of the upper wall 20.

  A heating assembly is shown in FIG. 5, and is wound around the heating mantles 52 and 54. A heating blanket 70 comprises a cord heater 71 sandwiched between plates

  pressure-sensitive aluminum foil 74 The warming

  71 is extended between the aluminum foils 74 so that there is at least a portion thereof along the opposite sides of the heating mantles 50, 52 and 54. The heater 71 is

  arranged on both sides of the heating sleeves.

  A first lead 66 comprises a first end 66a coupled to a first end 71a of the lead heater 71 by a thermostat 68. A second lead 73 includes a first end 73 coupled to the second end 71b of the heater. cord 71 by a fuse 72 The second ends 66 b

  and 70b of the wires 66 and 70 are coupled to a bushing 75.

  An end 76a of a ground wire 76 is also coupled to the bushing 75. The second end 76b of the ground wire 76 is coupled to the branch 56 for grounding. The bushing 75 is adapted to be coupled to a suitable source of current for example by receiving an AC power cord which applies a voltage between the ends 71a and 71b of the heater 71 to heat the heater 71 The heat created by the heater 71 goes to through the aluminum foils 74 to heat the sleeves 50, 52

and 54.

  In operation, the applicators 30-1, 30-2 and -3 are placed in the heating sleeves 50, 52 and 54

  through the respective openings of the upper wall 20.

  The heater 71 is activated to surround the heating mantles 50, 52 and 54 of heat The thermostat 68 controls the heating and limits the temperature to 660 C. The heat of the heating mantles 50, 52 and 54 will be transferred to each of the tanks 40 and thus, to the depilatory wax 39 stored in each reservoir By heating the wax to an appropriate temperature, this can flow. In the present invention, the depilatory wax is heated to a preferred temperature of 660 C which assumes that the The depilatory wax is melted to a sufficient degree for application by the applicator device 30 in the manner described hereinafter. Thus, the present invention is characterized by heating the depilatory wax above the threshold temperature of the pain due to

the heat for a person.

  Each applicator has a different dimension for application of the molten and hot depilatory wax to

  various surfaces of the human body For example, the applica-

  30-1 is intended for the application of wax to

  legs of a person to remove hair The applica-

  30-2 is provided for a good application of the hot depilatory wax to the underarm skin The applicator device 30-3 is provided for a good application of the hot depilatory wax 39 to the eyebrow area of the

face to remove hair.

  Referring to the graph shown in FIG. 6, the various parameters to which the melted wax is applied to the skin by the applicator device 30 according to the invention are described. The threshold temperature of a person for heat pain However, in the present invention, the depilatory wax in the reservoir 40 is heated to about 660 ° C. The application of heat wax to the skin is 440 ° C. (a in FIG. 660 C by means of a stick or spoon will normally cause

  pain and if applied in a sufficient

  If it is thick enough to raise the skin's final temperature above 440 ° C, it may burn the skin of the person. The critical value is the final temperature of the skin t SF immediately after application of the hot wax. The final temperature of the LSF skin can be represented by the following equation: 1 (Rw) (Vw) () (r W) 1 + 1f (V) () (LSI) 1 TSF: 1 (? W) (Vw) (Cw) 1 + 1 (fs) (Vs) (Cs) 1 in which: PW = density of the wax = 1.080 kg / l VW = volume of the wax = volume / cm 2 W = specific heat of the wax =

0.434 (at 66 C)

  TW = wax temperature = 66 C (339 K) f S = skin density = 1.071 kg / l VS = skin volume = 1.0 x 10-7 m 3 US = specific heat of the skin = 1,000 Zs I = initial skin temperature =

34 C (307.7 K).

  Thus, as noted above, the applicator of the present invention is constructed to apply a sufficiently thin layer of hot and melted wax to the skin so that the temperature threshold of heat pain is maintained. is never reached on the surface of the skin Referring to FIG. 6, when the thickness of the wax applied is less than 0.8 mm and the wax is heated to a temperature of the order of 66 C, the temperature threshold for heat pain, that is 44 C, is not reached on the surface of the skin As a result, the clearance between the roller and the wiper wall 47 b is particularly chosen to apply a layer of hot wax on the skin of a thickness not exceeding 0.8 mm In a preferred embodiment, the thickness of the applied wax layer is between 0.1 mm and 0.3 mm In this range, the final temperature of the skin is between 36 and 39 C, which is bi below the threshold of an individual for pain due to heat, although the wax has been heated to a temperature of about 66 C to allow it to flow and

  to be distributed by the distributor.

  When an applicator is rotated so that the roller 46 is downwardly directed, the gravity causes the hot melted wax to flow through the opening 42 into the reservoir to surround the roller 46 within the cap. The roll 46 is then pressed against the skin and is rolled. The hot and melted wax supplied to the roll 46 is then distributed by the clearance between the wiping wall 47 bet the roll 46 and is applied by

  the roll 46 in the form of a thin layer of wax.

  As best shown in FIG. 7, the clearance 41 in the distributor or head is preferably between 0.25 mm and 0.50 mm, in order to obtain the thickness of

reduced layer.

  The roller 46 applies a thin layer of wax to the skin as it rolls. As noted above, the thickness of the applied wax layer does not exceed 0.8 mm and preferably between 0.1 mm and 0.3 mm Although the wax is heated to a temperature

  reaching 660 C, the final temperature of the skin immediately

  after application of the hot wax is maintained below 440 C, temperature threshold for heat pain Immediately after application of the wax on the skin, a fabric such as a polyester fabric is pressed therein After cooling and hardening wax on the fabric, the wax is removed from the skin to remove the hair and because of the thinness of the layer of wax, it is sheared at the skin-wax interface leaving

thus the skin is smooth and beardless.

  Reference is now made to Figure 9 where the

  Roll 46 is provided with a smooth and continuous surface 48 '.

  Initially, it was thought that a roll 46 having grooves

  or grooves 48 was needed to give him a rub-

  sufficient to overcome the viscosity of the melted wax so that the roll can be rolled against the skin to apply a thin layer of wax Although it is believed that the grooves 48 in the roll 46 have offered such a benefit, benefit is also accompanied by drawbacks More particularly, overzealous users of the applicator can press the grooves 48 of the roller 46 against the skin with sufficient force to etch the skin of the pattern of the grooves Another problem is created by the users who can compressing the reservoir 40 so that an excess of wax can flow out of the game in the application defined by the roller 46 and the wiper wall 47b. This excess can result from the differences of play.

  caused by the grooves in the roll.

  It has therefore been found that the roller 46 should have a smooth and continuous surface 48 'of the type shown in FIG. 9, identical markers being used to designate identical elements. A smooth and continuous surface will produce a thinner layer of wax than this. The use of a smooth and continuous surface 48 ', with the same diameter as the outer diameter of the grooved roller previously described 48, will be achieved until now with a grooved roller to be applied to the skin. a layer of wax of the order of one-third to one-half the thickness of the wax layer obtained with the grooved roller Furthermore, the layer of wax applied has a more uniform thickness and it makes it possible to prevent the skin is etched, which makes

  even better the hair removal operation that follows.

  The hot wax epilator according to the invention provides a hot wax depilatory system that can be used safely at home without the need for professional assistance. The construction of the applicator device is such that a sufficiently thin layer of hot wax is applied to the skin which leaves the final temperature of the skin below the threshold of thermal pain, although the wax is heated to a temperature of the order of 661 C. Moreover, the present invention makes it possible to improve the efficiency and totally remove the hairs in comparison to known techniques, because a thin layer at a high temperature will wet the hair more completely and thus offer increased adhesion of the hair to the wax The heating mechanism automatically heats the wax in the tank which is part of the applicator Thus, crne can spoil the wax as in the techniques of the old tank, and the tank

  mustard serves as a handle for the applicator.

Claims (22)

R E V E N D I C A T I 0 N S   A wax applicator for use with a depilatory wax for removing hair from the skin, characterized in that it comprises a reservoir means (40) containing said depilatory wax, said depilatory wax (39) being normally disposed at a substantially solid state when it is at room temperature and can   flowing when heated to a pre-heated temperature   determined, a distributor means (44) arranged in communication with   fluid with said reservoir means for dispensing said wax when heated to a predetermined temperature in sufficiently thin layers   to ensure that the final temperature of the skin immediately   after application of the heated wax will be underneath   threshold temperature of pain due to heat.   2. Applicator according to claim 1, characterized in that the aforesaid wax, when it is heated to its predetermined temperature can flow, said predetermined temperature being above the threshold temperature at which the human being feels a pain due to heat.   3. Applicator according to claim 2, characterized in that said dispensing means comprises   a roller (46) and wiping means (47a, 47b)   rant, said roll resting in said wiper means surrounding it to define a game to limit the hot wax   and fondue flowing on said roll.   4. Applicator according to claim 3, characterized in that the aforementioned roller has a surface   cylindrical and continuously smooth.   5. Applicator according to any one of   claims 2, 3 or 4, characterized in that the game   mentioned above between the wiping means and the roller prevents the aforementioned layer of hot and melted wax applied to the   skin to exceed a thickness of 0.8 mm.   6. Applicator according to claim 5, characterized in that the aforementioned dispensing means applies the hot wax and melted above the skin to a   thickness between 0.1 and 0.3 mm.   7 Applicator according to claim 6, characterized in that the aforesaid wax is adapted to be able to flow at predetermined temperatures exceeding 440 C. 8. Applicator according to claim 7, characterized in that the aforesaid wax may flow from   optimally at temperatures of 660 C or higher.   9. Wax applicator assembly, characterized in that it comprises, in combination, a housing (12) having at least one sleeve (50, 52, 54), a heating means (70) supported in said housing around said sleeve, applicator means (30-1, 30-2, 30-3) comprising a reservoir means (40) for storing the depilatory wax and a dispensing means (44) supported on said reservoir means for dispensing said depilatory wax when it melted, said reservoir means being in fluid communication with said dispensing means, said applicator means being positionable in said sleeve, said heating means being adapted to heat the wax in said reservoir means to a predetermined temperature when said applicator means is placed in said sleeve to thereby melt said wax so that said dispensing means can apply said hot wax and melted to the skin in a sufficiently thin layer to r the final temperature of the skin, after application of the wax, is below the temperature   the threshold of pain due to heat.   10. Applicator assembly according to claim 9, characterized in that the aforementioned applicator means can   selectively inserted into the aforementioned heating sleeve.   11 applicator assembly according to claim 10, characterized in that the aforementioned heating means is a cord heater (71) adjacent to the aforementioned sleeve for   heating said sleeve to a predetermined temperature.   12. applicator assembly according to claim 11, characterized in that said heating means further comprises a thermostat (68) for adjusting the heat thus produced. 13. Applicator assembly according to any one of   claims 9, 10 or 12, characterized in that the   means aforesaid distributor is adapted to be removably coupled to the aforesaid tank forming means and   comprises rotatably supported roller means (46).   14. Applicator assembly according to claim 13, characterized in that said roller means is cylindrical and has a smooth surface.   An applicator assembly according to claim 14, characterized in that the aforesaid dispensing means comprises wiping wall means (47b) surrounding the aforesaid roller means to create a clearance to limit the thickness of the applied wax layer. by said medium forming roll.   Applicator assembly according to claim 16, characterized in that the aforementioned roller means applies a layer of hot wax and melted to the skin to   a thickness not exceeding 0.8 mm.   An applicator assembly according to claim 16, characterized in that the aforementioned roller means applies the above-mentioned hot and melted wax layer to the   skin at a thickness between 0.1 and 0.3 mm.   18. A method for applying a hot depilatory wax to the skin, characterized in that it comprises the steps of heating a wax reservoir to a predetermined temperature greater than 441 C so that said wax can flow and flow directly said hot wax and melted on a surface of the skin in a thin layer sufficiently uniform so that the final temperature of the skin after application of the wax is less than the   heat loss temperature due to heat.   19. The method of claim 18, characterized in that the uniformly thin layer supra less than 0.8 mm.   20. The method of claim 18, characterized in that the uniformly thin layer supra is between 0.2 and 0.3 mm.   21. The method of claim 18, characterized in that the wax reservoir is heated to temperatures of up to about 660 C. The method of claim 18, characterized in that it comprises the step of applying a fabric to the uniformly thin layer of wax before the heated wax will not cool.