RU173356U1 - COMBUSSION FOR COMBUSING LICE WITH BILATERAL COMBUSTION - Google Patents

Abstract

A comb for the treatment of pediculosis and a method for its manufacture are proposed, wherein the comb contains a grip and a plurality of teeth, each of which is equipped with successive grooves designed to trap and pull out nits and lice present in the hair, and the grooves form two groups intersecting each other along each tooth or needle combs, thereby forming intersecting sections and active edges facing in opposite directions.

Description

Technical field

The present utility model relates to a pediculosis comb designed to remove lice and nits eggs attached to hair, and in particular, the utility model relates to an improved comb that removes nits and lice from hair by combing the comb hair in one direction , or in the opposite direction, while this possibility of bilateral removal provides greater efficiency compared to previously known combs of the same type.

State of the art

Although pediculosis affects various segments of the population, school-age children are most affected by it from the moment when young children come in contact with other children, especially at school, in extracurricular activities and sports.

Lice settle on the scalp and lay eggs on the hair, i.e. eggs of the species Pedeculus humanus, Phtirius pubis, and similar species commonly known as lice.

For the treatment of this parasitic disease, many chemical compositions have been developed, as well as various combs to remove lice and nits that do not cause side effects, as is the case with chemicals.

In order to avoid the use of chemicals, various combs designs have gained popularity, containing a handle on which many needles, teeth or steel wires are fixed, the gap between which is made in such a way as to allow only one hair to pass closely between adjacent teeth, and thus, or, adhering to it, in particular nits, lingers between the specified teeth of the comb. Thus, passing the comb through the patient’s hair allows you to remove as many nits as possible.

One of the combs that most effectively achieves the goal of more successful removal of nits is the comb disclosed in Argentina's patent AR 03275 B1 and its American equivalent U.S. No. 5873374, both of which belong to the present owners and both describe, as more specifically defined in the utility model, a comb for combing lice with needles having irregularities on the peripheral surface, said comb containing a handle and a plurality of preferably steel teeth, wires or needles, with each needle having an end attached to the handle, an acting end and a peripheral surface, the acting end of each needle having a pointed and rounded apex. In accordance with the concept of the mentioned patents, the novelty of this comb compared to the prior art is that the peripheral surface of each needle is provided with irregularities designed to trap and pull out nits attached to the hair. The comb also has other features, such as a distance between adjacent needles, which is from 50 μm to 100 μm, with each needle having a total length in the range of 40 to 80 mm and a useful length on the outside of the handle in the range of 20 to 60 mm. Typical irregularities relating to Argentina's patent AR 03275 B1 and its US counterpart are preferably based on the creation of a spiral groove with a spiral pitch of less than 4 mm.

The channels and grooves according to the Argentinean patent AR 03275 B1 provide an improvement in the retention and pulling out of nits, and the purpose of the grooves is to create active edges that interrupt the smooth surface of the tooth by means of sudden changes in their geometric shape for trapping nits. However, during use, it was observed that the comb was introduced into the hair from the crown of the head and it fell along the hair, pulling nits from the lower end of the hair, thereby creating a relative movement between the needles and hair, due to which the hair passes into the lower part of the gap between the needles and leaves from there. The goal in this case is to capture nits by means of active or sharp edges on the grooves along the path. However, when the hair passes in the same direction inside the gap between the needles, not all edges of all the grooves are active, since half of the edges are smooth, as will be explained below with reference to figures illustrating the prior art.

Based on the foregoing, the authors of this utility model intend to improve the functional aspects of the teeth in the comb for combing head lice in order to achieve even more effective and efficient removal than was achieved using combs known in the art due to the presence of grooves that create corresponding active edges inside the gap between the needles for both directions of movement of the comb.

Utility Model Disclosure

Thus, the objective of this utility model is to create a comb for the treatment of head lice, containing needles, teeth or wires, equipped with grooves for holding, trapping and pulling out nits, dirt and lice without damaging the hair.

Another objective of this utility model is to create a new comb for combing head lice containing a grip handle and many teeth, each of which is equipped with successive grooves designed to trap and pull out lice and nits present in the hair, while the grooves form part of two groups, which intersect along each tooth or needle comb, thereby outlining the intersecting areas and active edges facing in different directions.

Another objective of this utility model is the creation of this type of comb for the treatment of head lice, which contains a grip handle, from which many teeth separated by a gap for passing hair and equipped with rough devices protrude to hold and grip nits and lice present in the hair, while said rough devices are formed by a plurality of grooves that are formed on the surface of at least one longitudinal part of each of said teeth, said plurality being the same the shells contain at least two groups of grooves, namely, the first group of grooves passing in a spiral around each tooth in the first direction of rotation, and the second group of grooves passing in a spiral formed around each tooth in the second direction crossing the specified first direction of rotation while these edges outline the grooves that are active in both directions, in each of the gaps between the teeth.

Another objective of this utility model is to create a comb for combing lice, containing a grip handle and many teeth, each of which is equipped with grooves designed to trap and pull out nits and lice that are in the hair, with each groove adjacent to the protrusion of at least one side.

Brief Description of the Drawings

For the purpose of clarity and understanding of the subject matter of this utility model, it is illustrated in several figures in which the utility model is shown in one of the preferred forms of presentation, only as an example, in which:

In FIG. 1 shows a front view of a comb for combing head lice in accordance with the prior art;

In FIG. 2 is a close-up front view of three teeth of the comb of FIG. one;

In FIG. 3 is a close-up front view of three comb teeth in accordance with a preferred embodiment of the present utility model; and

In FIG. 4 is an enlarged view of the gap between two teeth according to a utility model, showing a nits attached to hair moving in opposite directions within the specified gap, as shown by arrows;

In FIG. 5 shows a partial section and an enlarged view of two teeth on which grooves are formed by knurling to create a protrusion on at least one side or on each side of the groove to improve the ability to capture nits;

In FIG. Figure 6 shows a partial section and an enlarged view of a device that creates combs by means of pressure of the grooves on the tooth surface, leaving a protruding edge on only one side of the groove; and

In FIG. 7 is a partial sectional view of a fixture that creates combs by means of pressure of the grooves on the tooth surface, leaving a protruding edge on each side of the groove.

Utility Model Implementation

According to the figures, it is shown that the utility model relates to a comb for combing head lice, which, when viewed from afar, may look like a conventional comb, indicated by the general position 1 in the drawings, of the type that contains a gripping handle 2 in which a plurality of teeth or needles 3 are mounted passing from the handle 2 parallel to each other and supporting the usual gap, ensuring the passage of one hair and trapping nits that are attached to it. For example, the gap between the teeth can be from 50 microns to 100 microns, and the effectiveness of this gap has already been confirmed in the comb according to the Argentinean patent AR 03275 B1 of the same authors who are the owners of this utility model. Similarly, the teeth or needles can have a total length in the range of 40 to 80 mm and a useful length on the outside of the handle in the range of 20 to 60 mm. In the aforementioned patent, teeth or needles were provided with rough devices for holding and pulling nits and lice in the hair.

In one of the most effective and efficient embodiments, the rough devices on the teeth or needles 3a, 3b, 3c contain successive grooves that are formed on the surface of at least a portion of the length of each tooth. The grooves indicated by reference 4 in FIG. 2 are helically carved around each tooth 3, with all spiral grooves being made in one direction, i.e. the grooves are seen to be curved in a spiral around the needle in a clockwise direction when viewed from above.

The sections of the grooves facing the spaces 5 separating each pair of adjacent teeth have two edges, i.e. upper edge 6 and lower edge 7, as shown in FIG. 2, but for ease of drawing, only some of the adjacent grooves are indicated. Therefore, as a result of a certain inclination shown by each spiral groove at the intersection of the gap 5, the upper edge 6 will be formed by the cylindrical wall 8 of the tooth and the side wall 9 of the groove 4, which form an acute angle, as is clearly seen in FIG. 2. On the contrary, the lower edge 7 will be formed by a cylindrical wall 8 of the tooth and a side wall 10 of the groove 4, which form an obtuse angle, i.e. constituting more than 90 °. As a result, it can be said that the edge 6 is active due to the acute-angled or honed downward configuration on the tooth 3c, which is shown on the right side of the figure, while the edge 7 is inactive or smooth because it does not have sharp or honed sides. On the other side of the gap 5, the tooth 3b will also have active edges 6, which in this case are facing up, and inactive edges 7, facing down.

When using a comb, for example, on a child with long hair, combing begins with the crown of the head, passing down through the hair to reach the lower end of the child’s hair. When combing begins with the crown of the head, the comb is introduced into the hair, i.e. hair 11 will pass through it upward relative to the teeth 3b and 3c, as indicated by the arrow, which is shown above the hair in FIG. 2. When the comb is pulled to the lower part of the hair, the latter extends from the gap 5 towards the top of the teeth, as indicated by the arrow that is shown under the hair 11. Naturally, the up and down movements of the hair inside the gap 5 are relative movements between the hair and the teeth, since obviously, the teeth are teeth that move along the hair.

When the nits-infested hair moves up, as shown in FIG. 2, he will meet only two active edges 6, i.e. that tooth 3c, which is shown on the right in FIG. 2, while the inactive edges 7 will not affect the hair surface in any way, since they have an obtuse angle and since the edge 7 does not meet the passing hair, but follows behind, since the hair sliding along the tooth surface 8 extends over the edge 7. C on the other hand, the edges of the tooth 3b, which are shown in the center of the figure, will also be the active edges 6 and the inactive edges 7, but since their active edges 6 will face up, they will not affect the passage of the hair, while the edges 7 that meet the passing up hair They do not contain acute-angled edges and, therefore, they are not involved with respect to the surface of the hair to trap any nits attached to it. When moving down from the crown of the hair 11 will only meet with the active edges 6 of the central tooth 3b. Thus, if the comb each time does not pass in and out relative to the hair, it will only meet with the active edges of the corner tooth in the gap 5, which leads to inefficient processing.

To solve this problem in the present utility model, as shown in FIG. 3 and 4, a groove pattern is made of two different groups: one with a spiral configuration in one direction, and the other with a spiral configuration in the opposite direction.

More specifically, the comb may have a general configuration, as shown in FIG. 1, but, unlike the prior art, many grooves contain at least two groups of grooves, namely, the first group of grooves 4, spiraling around each tooth, in the first direction of rotation, and the second group of grooves 12, spiraling around each tooth, in a second direction across the pin to the specified first direction of rotation. A group of grooves 4 descends along the tooth, turning in a clockwise direction, if you look at the tooth from above, while the second group of 12 grooves descends, turning in the opposite direction, making both groups of grooves intersect, and also forming sharp edges in both directions in each of gaps 5 between the teeth 3.

Intersecting each other, the grooves 4, 12 form intersecting sections 13, which can be located randomly outside the gap 5 or within the gap 5. The gap 5 between the teeth can be from 0.05 mm to 0.1 mm, and the grooves of one the groups go around the circumference around the tooth and are spaced from 0.5 mm to 5 mm.

The location of the two groups of spiral grooves extending in opposite directions ensures that the hair 11 carrying the “L” nits (see FIG. 4) will always meet with the active edge 6, from tooth 3b or from tooth 3c, i.e. from any of the adjacent teeth of the gap 5, through which the hair slides. In this way, it is guaranteed that the nits will be caught by any of the active edges 6. In the diagram of FIG. 4, the “L” nit on its way up will meet two sharp edges 6a and 6b of tooth 3b and an active edge 6c in tooth 3c. When moving downward, the nits will meet the active edge 6d of the tooth 3b and the active edge 6e of the tooth 3c, thereby significantly increasing the chances of catching the nits “L” and pulling it out together with any foreign substance and louse that has caught in the hair of the patient or user.

In addition, according to a utility model, the grooves 4, 12 can be formed by cutting or, preferably, knurling. More precisely, according to another aspect of the utility model, and as best shown in FIG. 6, 7, each groove 4 and 12 has at least on one side a protrusion 14 that protrudes above the generally smooth surface of the cylindrical tooth 3. In FIG. 5 for clarity, only four grooves are shown, but it should be noted that the laminate and protrusions 14 are also applicable to the grooves 12 of FIG. 3 and 4. Preferably, two protrusions 14 and 15 should be made, one on each side of the groove 4 or 12, so as to adjoin both sides of the groove, but it is clear that one protrusion is possible to achieve the desired effects. In addition, the protrusions 14, 15 may have a vertex 16, which may form a sharp or slightly rounded edge depending on the desired construction of the material used, etc.

The teeth may be spaced apart, for example, from 50 μm to 100 μm, and said raised protrusion preferably extends from 0.005 mm to 0.04 mm above said tooth “S” surface, and more preferably at a maximum distance of 0 , 01 mm. These surrounding grooves may be spaced from 0.5 mm to 4 mm, and these spiral grooves may have a spiral pitch of 0.5 mm to 4 mm.

The grooves of adjacent teeth can be arranged so that the protrusions 14 and 15 of adjacent teeth are opposed, as shown in FIG. 5, or facing each other. In any case, the distance between two adjacent teeth 9 will be reduced and, therefore, will limit the passage of the hair 11, holding the nits or any foreign substance 17.

In another aspect, the present utility model provides a method for forming grooves 4, 12 and protrusions 14, 15 on teeth of comb 3 of the tooth 1. Indeed, while grooves on the teeth of comb of the prior art were performed by using cutting tools to process the tooth surface, resulting in the grooves became very rough and causing hair wear, in this utility model another method is used that successfully solves two problems of the known combs for combing lice. One problem is the abrasiveness of the groove, and another problem is the lack of sufficient texture on the teeth to more effectively capture nits.

In accordance with this aspect of the present utility model, the grooves are made using a knurling method rather than cutting, in particular, a single-stage deformation of the tooth material is performed, which consists in exposing each tooth to a comb roller 18, which forms said grooves 4, 12 by pressure. Said pressure is applied in accordance with a force vector F1, which may be inclined relative to said tooth surface “S”, as shown in FIG. 6, so as to move the material near the groove to at least one of its sides, thereby forming said protrusion 14 on at least that side of the groove.

Alternatively, a roll 18 can be used in the method according to the present utility model, as shown in FIG. 7, which exerts a force F2 perpendicular to the surface of the tooth 3, so as to move the material near the groove in the direction of both sides of the groove, thereby forming these protrusions 14, 15 on both sides of the groove.

The manufacturing process is cold knurled, and the groove or slot 4, 12, for example, can be performed by rotating the tool around the wire as it passes through the tool. Naturally, the tool 18 may be single or having several parts.

The present utility model represents an improvement over the prior art. For example, Argentina's patent AR 03275 B1 was successful when the nits hit the slot at an angle of 90 degrees to the path, and it could be caught when the nits enter the groove on the tooth. Using a real utility model with one or two protrusions 14, 15, you can then spread the most aggressive area for nits - protrusions and a groove, and also create a protrusion that offers an additional trap. Now the nits collide with the protrusions more often than they will fall into the groove according to the patent of the same authors.

Using protrusions or reliefs, according to the present utility model, two effects are achieved: an increase in the probability of picking up nits, since the rough zone is increased. Now it passes, rather, along the generatrix of the cylinder, thereby contributing to a collision with nits. A protrusion extending, for example, at an angle of 90 degrees relative to the movement of the nits, pulls out and / or destroys the nits in its path. Paying attention to the path that combs pass along the head, you can see that the movement of the teeth with their grooves and protrusions relative to the nits on the hair has a component that is perpendicular to the teeth, and another component in the direction of the axis of the teeth. Then the combined movement of the nits relative to the groove occurs almost at an angle of ninety degrees from its course. That is, when passing through a comb, nits attached to the hair are captured either by protrusions or by a groove.

In FIG. 5 shows a longitudinal section of the tooth, on which you can see the contact profile and the nits attached to the hair, which is pulled out by the protrusions and the groove. As shown in this figure, the height "H" of each protrusion 14, 15 should not exceed 0.04 mm.

Another improvement according to the utility model is that in the absence of chip removal during the manufacturing process, the tooth material, which takes on a plastic state under rolling pressure, is removed and deposited at the edges, thereby forming protrusions 14, 15. The inner surface of the groove thus obtained is non-abrasive, then both protrusions are very aggressive.

The knurling method used in the manufacturing process also improves the bending resistance of the tooth, which is an important parameter in comb efficiency. This improvement is realized due to the fact that the resulting slot does not cut the fibers of the material, like removing chips.

Claims (17)

1. A comb for combing head lice containing a grip handle, a plurality of teeth protruding from the grip, said teeth being spaced to allow passage of one hair, and provided with roughened devices for holding and pulling out lice and nits present on the hair, wherein rough devices contain many consecutive grooves formed on the surface of at least one longitudinal segment of each of these teeth, while: said plurality of grooves is formed by at least two groups of grooves, namely the first group of grooves, spiraling around each tooth, in the first direction of rotation, and a second group of grooves, spiraling around each tooth, in a second direction transverse to said first direction of rotation, wherein said grooves outline active edges in both directions in each of the gaps between the teeth. 2. A comb according to claim 1, characterized in that said grooves of the first group intersect with said grooves of the second group, forming intersecting sections. 3. The comb according to claim 2, characterized in that said intersecting sections are arranged randomly along and around each tooth. 4. The comb according to claim 2, characterized in that said intersecting sections are located between the teeth. 5. Comb according to any one of paragraphs. 1-4, characterized in that the said teeth are spaced from 0.05 to 0.1 mm. 6. Comb according to any one of any of paragraphs. 1-4, characterized in that the grooves of one group pass around the circumference around the tooth and are located at intervals from 0.5 to 5 mm. 7. The comb according to claim 5, characterized in that the grooves of one group extend around the circumference around the tooth and are spaced from 0.5 to 5 mm apart. 8. Comb according to any one of paragraphs. 1-4, 7, characterized in that the said grooves are adjacent at least on one side to the protrusion along the specified surface of the tooth. 9. The comb according to claim 8, characterized in that said teeth are spaced from 0.05 to 0.1 mm and said protrusion extends a distance of 0.005 to 0.04 mm above said tooth surface. 10. The comb according to claim 9, characterized in that the protrusions of adjacent teeth are offset from each other. 11. Comb according to claim 9, characterized in that the protrusions of adjacent teeth are facing each other. 12. Comb according to any one of paragraphs. 9-11, characterized in that each of these protrusions has an upper face. 13. The comb according to claim 12, characterized in that said protrusions are present on both sides of each groove. 14. Comb according to any one of paragraphs. 1-4, 7, 13, characterized in that the grooves are formed by knurling.

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