The present application relates to protecting skin from hot equipment, and more particularly from burns from personal care equipment such as curling irons.
Various types of equipment operate using surfaces hot enough to burn human skin, causing pain, disfigurement, risk of infection and other ill effects. Some such equipment must be operated close to human skin to accomplish its purpose. For example, equipment for curling hair using application of heat, known as curling irons or curling wands, must be hot and must be used near the face and hands when curling hair. Curling irons and wands typically have a form factor that includes a thermally conductive, electrically heated curling rod (the “barrel”) attached to a thermally insulated handle. The barrels are often made of metal or ceramic material and come in various form factors and sizes. To work properly for curling hair, the barrel must be heated to a temperature in a range of about 250° F. to 450° F., which includes temperatures hot enough to burn sensitive skin from momentary contact. People using curling irons are therefore prone to unintentionally burning themselves from momentary contact of their skin with hot surfaces of curling iron, wands, and similarly handheld hot equipment.
It would be desirable, therefore, to develop new apparatus and methods for skin protection from hot equipment, that overcomes these and other limitations of the prior art.
This summary and the following detailed description should be interpreted as complementary parts of an integrated disclosure, which parts may include redundant subject matter and/or supplemental subject matter. An omission in either section does not indicate priority or relative importance of any element described in the integrated application. Differences between the sections may include supplemental disclosures of alternative embodiments, additional details, or alternative descriptions of identical embodiments using different terminology, as should be apparent from the respective disclosures.
In an aspect of the disclosure, a handheld electrically heated instrument that includes a thermally conductive exterior surface heated within a range of about 250° F. to about 450° F., is provided with a thin, thermally insulating protective cover. The cover may include an elastomeric sleeve sized to cover and conform to the thermally conductive exterior surface of the handheld heated instrument. The sleeve may have a base uniform thickness in a range of 0.5 to 3 mm exclusive of holes or surface features. It may be made of a high-temperature polymer having a softening point above 450° F. and a thermal conductivity less than about 3 W/m K. An assembly may include the protective cover installed on the barrel of a curling iron, curling wand, or similar equipment.
In an aspect, the high-temperature polymer may be made of a silicone rubber material, in part or in whole. In another aspect, the elastomeric sleeve may be generally cylindrical and sized to cover and conform to a barrel of a curling iron or curling wand. In some embodiments, the elastomeric sleeve may be smooth and include no surface features. In other embodiments, the sleeve may include various surface features, for example through holes, divots, continuous ridges or discontinuous ridges (bumps). In addition, or in an alternative, the elastomeric sleeve may include a plurality of uniformly spaced ridges around a circumference of the sleeve.
A method of using the protective cover may include installing the protective cover on the barrel of a subject curling iron, curling wand, or similar equipment; activating the subject equipment until the barrel is heated to a desired operating temperature, and using the subject equipment to style hair. The protective cover reduces chance of burns from momentary contact. Due to the materials and geometry of the protective cover, sufficient heat flows during normal exposure to the hair under treatment to achieve the same styling effect as an unprotected iron without appreciably increasing the time required.
To the accomplishment of the foregoing and related ends, one or more examples comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative aspects and are indicative of but a few of the various ways in which the principles of the examples may be employed. Other advantages and novel features will become apparent from the following detailed description when considered in conjunction with the drawings and the disclosed examples, which encompass all such aspects and their equivalents.
The features, nature, and advantages of the present disclosure will become more apparent from the detailed description set forth below when taken in conjunction with the drawings in which like reference characters identify like elements correspondingly throughout the specification and drawings.
Various aspects are now described with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. It may be evident, however, that the various aspects may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing these aspects.
Referring to
A protective cover may be configured to fit under a tong of a curling iron.
The elastomeric sleeve 210 may be sized to cover and conform to the thermally conductive exterior surface of the handheld heated instrument (e.g., curling iron or wand), wherein the sleeve has a base uniform thickness in a range of 0.5 to 3 mm exclusive of holes or surface features. The base thickness is shown enlarged at the top and bottom of
The elastomeric sleeve 210 may be generally cylindrical and sized to cover and conform to a barrel of a curling iron or curling wand. For example, the elastomeric sleeve 210 may have an inner diameter that is slightly smaller than an outer diameter of the barrel, for example, less than the outer diameter of the barrel by an amount in a range of about 0.01 mm to 1 mm. For non-circular barrels, the inner perimeter of the elastomeric sleeve may similarly be slightly less than the outer perimeter of the barrel. The elastomeric sleeve may be closed on one end to cover the tip of the barrel, as shown in
In some embodiments, the elastomeric sleeve 210 may be smooth and include no surface features. In other embodiments, the sleeve may include various surface features, for example through holes, divots, continuous ridges or discontinuous ridges for example bumps. In an aspect, the elastomeric sleeve includes a plurality of uniformly spaced through holes. Each of the through holes may have a perimeter shape selected from circular, slotted or polygonal, and each may be sized to expose an area not greater than about 0.5 cm2 of any underlying hot barrel, in a shape that does not admit skin into contact with the hot barrel.
In addition, or in an alternative, the elastomeric sleeve may include a plurality of uniformly spaced ridges around a circumference of the sleeve. Each of the uniformly spaced ridges may have a uniform height in a range of 1 to 4 mm, and a uniform width in a range of 1 to 4 mm. Each of the uniformly spaced ridges may have a cross-section selected from semi-circular, rectangular or triangular. In a variation of a ridged design, a portion of the elastomeric sleeve may be left free of ridges in an area corresponding to a tong of a curling iron. In an aspect, the ridges may be non-continuous around the circumference of the elastomeric sleeve, forming elongated or non-elongated bumps. The ridged zone 204 may be limited to a portion of the cover 200 or may cover its entirety.
In an aspect, the elastomeric sleeve 210 has a uniform internal diameter in a range of 2 to 10 cm, for example, a uniform internal diameter in a range of 3.5 to 6 cm. The elastomeric sleeve 210 may be sized in length and internal diameter to fit a specific size or model of curling iron or curling wand. In an aspect, the high-temperature polymer has a thermal conductivity less than about 1 W/m K, or a thermal conductivity less than about 0.5 W/m K. Both values can be achieved using a grade of silicone rubber.
Protective covers may lack some or all of the described surface features. For example,
Thus, the protective cover may prevent millions of minor burns, and tens of thousands of major burns due to the use of curling irons. The protective cover may be made as a one size fits all or made to fit different sizes and any shape whatsoever, like cylinder, oval, cone, rectangle (prism), cube, sphere, and more.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to these aspects will be clear to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. For example, although a silicone rubber material is described, other high temperature elastomers may also be suitable. Likewise, although ridges and slotted through-holes are illustrated, other surface features such as circular holes or bumps may also be useful. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The present application is a continuation of International (PCT) Application No. PCT/US2018/041337 filed Jul. 9, 2018, which claims priority to U.S. Provisional Patent Application Ser. No. 62/530,239 filed Jul. 9, 2017, the disclosures of both of which are incorporated herein in their entireties by reference.
Number | Date | Country | |
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62530239 | Jul 2017 | US |
Number | Date | Country | |
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Parent | PCT/US2018/041337 | Jul 2018 | US |
Child | 16739029 | US |