WO2020148594A1 - Dental goldsmith electric waxer - Google Patents

Dental goldsmith electric waxer Download PDF

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Publication number
WO2020148594A1
WO2020148594A1 PCT/IB2020/000004 IB2020000004W WO2020148594A1 WO 2020148594 A1 WO2020148594 A1 WO 2020148594A1 IB 2020000004 W IB2020000004 W IB 2020000004W WO 2020148594 A1 WO2020148594 A1 WO 2020148594A1
Authority
WO
WIPO (PCT)
Prior art keywords
electric
waxer
electric resistance
wax
tank
Prior art date
Application number
PCT/IB2020/000004
Other languages
French (fr)
Inventor
Gennaro VISONE
Original Assignee
Visone Gennaro
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Visone Gennaro filed Critical Visone Gennaro
Publication of WO2020148594A1 publication Critical patent/WO2020148594A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/0028—Instruments or appliances for wax-shaping or wax-removing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00523—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes provided with means to heat the material

Definitions

  • the object of the present invention is a wax dispenser which, by means of an electric resistance, melts the wax contained in a tank thereof.
  • An outer pressure exerted with the fingers on such tank allows controlling the escape of the wax through a perforated tip.
  • the invention falls within the sector of wax applicators (also known by the term “waxers”) for the use within the field of dental technology, goldsmith and within the scope of figurative arts.
  • Said waxers represent a more suitable instrument for applying the melted wax to a product, compared to traditional devices such as a bunsen and a spatula, an electric spatula, a hot air, induction appliance, or trays heated by an electric resistance wherein wax is melted and then taken.
  • the prior document US 2014/054319 describes a wax dispenser shaped as a hollow tube containing the wax: with the aid of a heating element and a compressed air insufflating device for introducing air from the outside into said hollow tube, such dispenser is suitable for making the wax flow more precisely to the outside.
  • the patent US 2014/054319 while solving some drawbacks of the state of the art, has a rather complicated construction due to the need for means for causing the pressurisation and depressurisation steps in the wax tank.
  • a waxer with a more immediate and inexpensive construction is described in document FR 2902617, which is, however, a simple suction device for a volume of wax heated and contained in a separate cup.
  • Such document describes a waxer comprising a metal tank having wall portions removed, lined with a flexible silicone tube capable of flexing as a result of the pressure exerted by the user, who can thereby decide the quantity of wax to be dispensed in relation to the pressure force exerted.
  • the object of the present invention is to obviate such type of drawbacks by providing a waxer that allows an optimisation of the methods of use, both in terms of ease of use and effectiveness in the delivery of the wax.
  • a further object, at least of some variants of the invention, is to indicate means for the rapid use and almost zero maintenance for the making of the waxer herein described.
  • Figure 1 is a schematic view of the waxer according to the invention, highlighting its main elements, such as the perforated tip A, the flexible elastic tube B, the electric resistance C and the cap D;
  • Figure 2 represents the waxer of Figure 1 lined with metal tape E;
  • Figure 3 shows the waxer according to the invention, with the addition of the lining consisting of the thermal insulating tube F;
  • Figure 4 exemplifies graphically how an outer pressure P makes the melted wax flowing to the outside of the perforated tip A.
  • Figure 1 schematically shows the waxer as a whole, comprising a section of heat-resistant flexible elastic tube B, which acts as a tank for the wax.
  • Such flexible elastic tube B comprises at one end a cylinder that ends externally with a perforated tip A, while at the opposite end a cap D is applied that allows sealing the tool hermetically, preventing the wax contained from escaping.
  • the outer diameter of the cylindrical section of the perforated tip A is greater than the inner diameter of the flexible elastic tube B, so that when inserted it cannot move and creates an impassable step to the wax contained.
  • fixing means may be employed such as a polyamide adhesive tape, an elastic, a heat-resistant clamp or cord, placed externally on the flexible elastic tube B at the cylindrical section of the perforated tip A where the diameter is smaller, keeping it integral with such elastic flexible tube B, thereby preventing the relative movement and the escape of the wax contained.
  • the perforated tip A is made of metal material, although it can also be made of any other heat-resistant material.
  • Reference C indicates an electric resistance applied on the flexible elastic tube B, adapted to provide the calorific power necessary for the melting of the wax contained therein, by means of an external power supply Cl suitable for the existing mains voltage.
  • said electric resistance is powered by a rechargeable electric battery.
  • said electric supply means Cl are equipped with a potentiometer in order to be able to regulate the heat produced by the electric resistance C, such as to be able to melt waxes with different melting points and/or to select the desired degree of fluidity of the wax.
  • such electric resistance C consists of a low voltage electric resistance made of Kapton, preferably of the adhesive type, applied around the flexible elastic tube B and made integral thereto by winding of a metal tape E, also preferably of the adhesive type.
  • metal tape E is only optional and does not affect the basic operating conditions of the waxer: however, it allows reducing the time necessary for the wax contained in the flexible elastic tube B to be melted, allowing greater propagation of the heat produced by such electric resistance C.
  • electric resistance made of Kapton C any other type of electric resistance suitable for the purpose may be used, such as for example a cartridge-, band-type, silicone, Mylar electric resistance, a filamentary electric resistance.
  • reference F finally indicates a tube made of thermal insulating material, acting as a barrier against the heat produced by the electric resistance C.
  • such insulating tube is made of cork, but any other material suitable for heat dissipation may equally be used, such as for example a low thermal conductivity material.
  • the waxer herein described is preferably associated with a support on which to place it during use, having a housing adapted to the positioning of the tool with the perforated tip A facing upwards.
  • the wax is inserted into the flexible elastic tube B acting as a tank, to then re-apply said closing cap D.
  • the electric resistance C is then powered and the waxer is positioned on the support mentioned above, with the perforated tip A facing upwards.
  • Said perforated tip A when the waxer is placed on such support, is preferably provided with a concave cover inserted over it (not shown in the figure), with the concavity facing upwards to collect the drop of wax that could escape due to the increase in pressure that occurs when the heat melts the wax remaining in the perforated tip A from a previous use.
  • the waxer When the wax contained in the tank reaches the melting point, the waxer can be taken from the support and, even if the perforated tip A is directed downwards and the possible concave protective cover is removed, there is no wax escaping. In order for this to happen, it is necessary and sufficient to exert a slight outer pressure P on any part of the waxer with the fingers to allow the flexion of the thermal insulating tube F and the consequent flexion of the underlying flexible elastic tube B, possibly lined with the metal tape E.
  • a greater pressure P corresponds to a greater quantity of wax escaping.
  • the introduction of the wax to be melted may also be provided not from the end of the waxer provided with closing cap D, but by removing the perforated tip A: in this case, however, such perforated tip A must be suitably provided with a threading so that it can be unscrewed from the flexible elastic tube B (suitably equipped with an additional annular inner element whereon such perforated tip A can be screwed) or, in the absence of a threading, be provided with an annular gasket (for example an O- ring).
  • an annular gasket for example an O- ring
  • the first order of advantages lies in the greater efficiency of use, since such waxer comprises a tank (represented by the flexible elastic tube B) that can flex uniformly over its entire surface, under the action of the pressure P exerted by the user and allow the wax to escape, and then return to the initial position when such pressure P is released, with reduced resistance to stress.
  • the silicone tube placed externally to the metal tank flexes laying down in the void below at the section without the slices of wall removed, consequently moving away from the insulating cork tube whereon the user applies the pressure force; it follows that in order to allow the escape of the wax, it is necessary to exert a greater pressure, to be further increased as the tank empties, but said greater pressure is hindered by the mechanical resistance provided by the metal walls of said tank: this entails, in relatively short times, the crushing and breaking of the insulating cork tube.
  • the waxer herein described is capable of a more homogeneous flexion and with reduced resistance to stress, i.e. it flexes more and without impediments caused by the metal walls of the underlying tank (here absent and replaced by a flexible elastic tube B, preferably made of silicone material): ultimately, therefore, the waxer in question is more practical and ergonomic since there is no need to exert the pressure on a specific point, with considerable advantages especially for those who use the waxer working with a microscope.
  • the usefulness of the waxer can be easily understood in terms of reducing the time needed to carry out the waxing steps, thereby helping to make the user's action more effective.
  • a second order of advantages concerns the economic sphere, since the waxer herein described is composed of a few simple components and the cost for the production and assembly thereof is very low, considering the short time necessary to assemble its parts.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The present invention relates to a waxer powered by an electric resistance C, composed of a flexible elastic tube B that acts as a tank wherein the wax contained therein is melted. An external pressure P exerted with the fingers on such waxer allows controlling the escape of the wax through the perforated tip A. A greater pressure P corresponds to a greater quantity of wax that escapes, while the cessation of the pressure P corresponds to the cessation of the escape of the wax.

Description

DENTAL GOLDSMITH ELECTRIC WAXER
DESCRIPTION
The object of the present invention is a wax dispenser which, by means of an electric resistance, melts the wax contained in a tank thereof. An outer pressure exerted with the fingers on such tank allows controlling the escape of the wax through a perforated tip.
The invention, therefore, falls within the sector of wax applicators (also known by the term "waxers") for the use within the field of dental technology, goldsmith and within the scope of figurative arts.
Said waxers represent a more suitable instrument for applying the melted wax to a product, compared to traditional devices such as a bunsen and a spatula, an electric spatula, a hot air, induction appliance, or trays heated by an electric resistance wherein wax is melted and then taken.
In the state of the art some electric waxers already exist, which, by means of an electric resistance, melt the wax contained in the tank, which then escapes from a perforated tip.
The prior document US 2014/054319, for example, describes a wax dispenser shaped as a hollow tube containing the wax: with the aid of a heating element and a compressed air insufflating device for introducing air from the outside into said hollow tube, such dispenser is suitable for making the wax flow more precisely to the outside. The patent US 2014/054319, while solving some drawbacks of the state of the art, has a rather complicated construction due to the need for means for causing the pressurisation and depressurisation steps in the wax tank.
A waxer with a more immediate and inexpensive construction is described in document FR 2902617, which is, however, a simple suction device for a volume of wax heated and contained in a separate cup.
A significant step forward in solving the problems of the prior art is represented by the waxer described in the Italian patent application 102015000031874, owned by the same applicant for the present patent application.
Such document describes a waxer comprising a metal tank having wall portions removed, lined with a flexible silicone tube capable of flexing as a result of the pressure exerted by the user, who can thereby decide the quantity of wax to be dispensed in relation to the pressure force exerted.
However, even the waxer just mentioned (completed by an external cork tube, with the function of thermal insulation) has some practical drawbacks, essentially related to the intrinsic construction features of the tool, which causes non-optimal cooperation among the three cylindrical components (the inner metal tank, the flexible tube made of silicone material, the outer cork tube), both for the fact of having different mechanical strength and for the need to exert the pressure only on the surface corresponding to the portions of the metal tank wherein the removed slices of wall are missing.
The object of the present invention is to obviate such type of drawbacks by providing a waxer that allows an optimisation of the methods of use, both in terms of ease of use and effectiveness in the delivery of the wax.
A further object, at least of some variants of the invention, is to indicate means for the rapid use and almost zero maintenance for the making of the waxer herein described.
These and other objects, which shall appear clearly hereinafter, are achieved with a waxer made according to claim 1.
Other objects may also be achieved through the additional features of the dependent claims. For higher clarity of description, the disclosure of the invention continues with reference to the annexed drawing tables, having an illustration and non-limiting value only, wherein:
Figure 1 is a schematic view of the waxer according to the invention, highlighting its main elements, such as the perforated tip A, the flexible elastic tube B, the electric resistance C and the cap D;
Figure 2 represents the waxer of Figure 1 lined with metal tape E;
Figure 3 shows the waxer according to the invention, with the addition of the lining consisting of the thermal insulating tube F;
Figure 4 exemplifies graphically how an outer pressure P makes the melted wax flowing to the outside of the perforated tip A.
The features of a preferred variant of the waxer are now described using the references in the figures. It should be noted that the aforementioned figures, although schematic, reproduce the elements of the invention according to proportions between their dimensions and spatial orientations that are compatible with a possible embodiment.
Figure 1 schematically shows the waxer as a whole, comprising a section of heat-resistant flexible elastic tube B, which acts as a tank for the wax.
Such flexible elastic tube B comprises at one end a cylinder that ends externally with a perforated tip A, while at the opposite end a cap D is applied that allows sealing the tool hermetically, preventing the wax contained from escaping.
Preferably the outer diameter of the cylindrical section of the perforated tip A is greater than the inner diameter of the flexible elastic tube B, so that when inserted it cannot move and creates an impassable step to the wax contained. Flowever, nothing prevents the diameter of the cylindrical section of the perforated tip A from being equal to or less than such inner diameter of the flexible elastic tube B and or the cylindrical part of said perforated tip A from having a section with a smaller diameter: in such cases, fixing means may be employed such as a polyamide adhesive tape, an elastic, a heat-resistant clamp or cord, placed externally on the flexible elastic tube B at the cylindrical section of the perforated tip A where the diameter is smaller, keeping it integral with such elastic flexible tube B, thereby preventing the relative movement and the escape of the wax contained.
Preferably the perforated tip A is made of metal material, although it can also be made of any other heat-resistant material.
Reference C indicates an electric resistance applied on the flexible elastic tube B, adapted to provide the calorific power necessary for the melting of the wax contained therein, by means of an external power supply Cl suitable for the existing mains voltage.
Alternatively, said electric resistance is powered by a rechargeable electric battery.
Preferably, said electric supply means Cl are equipped with a potentiometer in order to be able to regulate the heat produced by the electric resistance C, such as to be able to melt waxes with different melting points and/or to select the desired degree of fluidity of the wax.
In the preferred variant of the invention, such electric resistance C consists of a low voltage electric resistance made of Kapton, preferably of the adhesive type, applied around the flexible elastic tube B and made integral thereto by winding of a metal tape E, also preferably of the adhesive type.
The presence of such metal tape E is only optional and does not affect the basic operating conditions of the waxer: however, it allows reducing the time necessary for the wax contained in the flexible elastic tube B to be melted, allowing greater propagation of the heat produced by such electric resistance C. As an alternative to the electric resistance made of Kapton C, any other type of electric resistance suitable for the purpose may be used, such as for example a cartridge-, band-type, silicone, Mylar electric resistance, a filamentary electric resistance.
Finally, reference F finally indicates a tube made of thermal insulating material, acting as a barrier against the heat produced by the electric resistance C.
According to the preferred variant of the invention, such insulating tube is made of cork, but any other material suitable for heat dissipation may equally be used, such as for example a low thermal conductivity material.
For its optimal use, the waxer herein described is preferably associated with a support on which to place it during use, having a housing adapted to the positioning of the tool with the perforated tip A facing upwards.
The use of the waxer according to a standard and preferred method is briefly described below.
After removing the cap D, the wax is inserted into the flexible elastic tube B acting as a tank, to then re-apply said closing cap D.
The electric resistance C is then powered and the waxer is positioned on the support mentioned above, with the perforated tip A facing upwards.
Said perforated tip A, when the waxer is placed on such support, is preferably provided with a concave cover inserted over it (not shown in the figure), with the concavity facing upwards to collect the drop of wax that could escape due to the increase in pressure that occurs when the heat melts the wax remaining in the perforated tip A from a previous use.
When the wax contained in the tank reaches the melting point, the waxer can be taken from the support and, even if the perforated tip A is directed downwards and the possible concave protective cover is removed, there is no wax escaping. In order for this to happen, it is necessary and sufficient to exert a slight outer pressure P on any part of the waxer with the fingers to allow the flexion of the thermal insulating tube F and the consequent flexion of the underlying flexible elastic tube B, possibly lined with the metal tape E.
A greater pressure P corresponds to a greater quantity of wax escaping.
As an alternative to the method of use just summarized, the introduction of the wax to be melted may also be provided not from the end of the waxer provided with closing cap D, but by removing the perforated tip A: in this case, however, such perforated tip A must be suitably provided with a threading so that it can be unscrewed from the flexible elastic tube B (suitably equipped with an additional annular inner element whereon such perforated tip A can be screwed) or, in the absence of a threading, be provided with an annular gasket (for example an O- ring).
From the above description, the advantages achievable by the waxer of the present invention compared to the waxers of the state of the art are clear.
The first order of advantages lies in the greater efficiency of use, since such waxer comprises a tank (represented by the flexible elastic tube B) that can flex uniformly over its entire surface, under the action of the pressure P exerted by the user and allow the wax to escape, and then return to the initial position when such pressure P is released, with reduced resistance to stress.
This is also when the wax contained in the tank decreases in quantity, since nothing hinders the flexion of the tank, unlike the waxer described in the patent application 102015000031874, the tank whereof is made of metal and the flexion is allowed only for the portions in which the slices of wall removed are missing, with the further drawback that in order to allow the escape of the wax, greater pressure must be exerted, which must increase even more when the tank is emptying.
In more detail, according to the waxer of the previous patent application 102015000031874, the silicone tube placed externally to the metal tank flexes laying down in the void below at the section without the slices of wall removed, consequently moving away from the insulating cork tube whereon the user applies the pressure force; it follows that in order to allow the escape of the wax, it is necessary to exert a greater pressure, to be further increased as the tank empties, but said greater pressure is hindered by the mechanical resistance provided by the metal walls of said tank: this entails, in relatively short times, the crushing and breaking of the insulating cork tube.
The waxer herein described, instead, is capable of a more homogeneous flexion and with reduced resistance to stress, i.e. it flexes more and without impediments caused by the metal walls of the underlying tank (here absent and replaced by a flexible elastic tube B, preferably made of silicone material): ultimately, therefore, the waxer in question is more practical and ergonomic since there is no need to exert the pressure on a specific point, with considerable advantages especially for those who use the waxer working with a microscope.
For the reasons just mentioned, the usefulness of the waxer can be easily understood in terms of reducing the time needed to carry out the waxing steps, thereby helping to make the user's action more effective.
A second order of advantages concerns the economic sphere, since the waxer herein described is composed of a few simple components and the cost for the production and assembly thereof is very low, considering the short time necessary to assemble its parts.
Finally, the waxer in question requires practically no maintenance.

Claims

1. Electric waxer, in particular dental waxer, comprising:
a tank containing the wax to be melted,
a perforated tip (A) applied to one end of said tank,
a closing cap (D) applied to the other end of said tank,
an electric resistance (C) applied on said tank,
a tube (F) made of thermal insulating material, which wraps said waxer to act as a thermal barrier to the heat produced by said electric resistance (C),
characterised in that
said tank containing the wax to be melted comprises a flexible elastic tube (B) made of heat-resistant material, capable of flexing over its entire surface as a result of a pressure (P) exerted at any point of said tube (F) made of thermal insulating material.
2. Electric waxer according to claim 1 ,
characterised in that
said flexible elastic tube (B) is made of silicone material.
3. Electric waxer according to claim 1 ,
characterised in that
it further comprises a metal tape winding (E) applied over said electric resistance (C), adapted to make it integral with the said underlying flexible elastic tube (B) and to allow greater propagation of the heat produced by said electric resistance (C).
4. Electric waxer according to the previous claim,
characterised in that
said metallic tape (E) is adhesive.
5. Electric waxer according to claim 1 ,
characterised in that
said electric resistance (C) comprises external power supply means (Cl).
6. Electric waxer according to claim 1 , characterised in that
said electric resistance (C) is powered by a rechargeable electric battery.
7. Electric waxer according to any claim 5 or 6,
characterised in that
said supply means comprise a potentiometer.
8. Electric waxer according to any previous claim,
characterised in that
said electric resistance (C) is a low voltage electric resistance made of Kapton.
9. Electric waxer according to the previous claim,
characterised in that
said low voltage electric resistance (C) made of Kapton is adhesive.
10. Electric waxer according to any claim 1 to 7,
characterised in that
said electric resistance (C) is a cartridge-, or band-type, or silicone, or
Mylar electric resistance, or other electric resistance suitable for the purpose.
11. Electric waxer according to any previous claim,
characterised in that
said tube (F) of thermal insulating material is made of cork or other low thermal conductivity material.
PCT/IB2020/000004 2019-01-15 2020-01-10 Dental goldsmith electric waxer WO2020148594A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT202019000000163 2019-01-15
IT202019000000163U IT201900000163U1 (en) 2019-01-15 2019-01-15 DENTAL GOLDSMITH ELECTRIC WAXER

Publications (1)

Publication Number Publication Date
WO2020148594A1 true WO2020148594A1 (en) 2020-07-23

Family

ID=69591680

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2020/000004 WO2020148594A1 (en) 2019-01-15 2020-01-10 Dental goldsmith electric waxer

Country Status (2)

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IT (1) IT201900000163U1 (en)
WO (1) WO2020148594A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3364577A (en) * 1965-06-07 1968-01-23 Richard D. Oakleaf Electrically heated dental wax supplying and manipulating tools
US3522654A (en) * 1968-04-24 1970-08-04 Willy A E Schoelz Waxing tool
WO2017006165A1 (en) * 2015-07-08 2017-01-12 Visone Gennaro Electric dental waxer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3364577A (en) * 1965-06-07 1968-01-23 Richard D. Oakleaf Electrically heated dental wax supplying and manipulating tools
US3522654A (en) * 1968-04-24 1970-08-04 Willy A E Schoelz Waxing tool
WO2017006165A1 (en) * 2015-07-08 2017-01-12 Visone Gennaro Electric dental waxer

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