Swab assemblies exist to deliver a pre-proportioned product in a disposable and sterile manner. Such devices usually consist of a stick with a swab disposed at one end either immersed or covered in a product enclosed in a casing. Swab assemblies can make application of cosmetic and oral products much easier, as the product is pre-proportioned, the swab provides an extended reach, the swab end is sterile, and the swab end provides a soft applicator for sensitive areas of the mouth or face.
Swab assemblies have generally been designed with a handle portion for the user to grasp in order to use the swab contained inside. Typically, the handle portion of the swab assembly has a substantially similar diameter to the diameter of the swab stick. However, for many swab assembly uses this relatively small handle diameter may prove difficult to use because of the smaller surface area that the user is afforded to grasp.
This summary is provided to introduce simplified concepts of disposable applicator assemblies. Additional details of example disposable applicator assemblies are further described below in the Detailed Description. This summary is not intended to identify essential features of the claimed subject matter, nor is it intended for use in determining the scope of the claimed subject matter.
This disclosure is directed to disposable applicator assemblies with handles of a diameter substantially larger than a diameter of an applicator stick. Generally, the disposable applicator assembly includes a casing, a stick, and an applicator (e.g., a swab). A support structure is coupled to the assembly and engages the stick. A product may be housed in the casing for delivery by the applicator.
In one example, the casing has a first hollow portion having an inside diameter and a second hollow portion having an inside diameter substantially the same as the inside diameter of the first hollow portion. The stick is contained within the first and second hollow portions of the casing. An applicator is disposed at one end of the stick. In this example, the support structure is coupled to the casing and engages the stick to hold the stick in place within the casing.
In another example, an elongated swab applicator may have a swab attached at one end. A stick end of the swab applicator is coupled to a support structure, which is interposed between a wall of a casing and the stick end of the elongated swab applicator.
In yet another example, the disposable applicator assembly may be made by forming a casing, forming a support structure coupled to the casing, and inserting a applicator into the support structure.
The detailed description is set forth with reference to the accompanying figures. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The use of the same reference numbers in different figures indicates similar or identical items.
As discussed above, existing swab assemblies are often difficult to grip. This application describes disposable swab assemblies having a handle to facilitate gripping. Generally, the disposable swab assemblies comprise a hollow casing housing a swab stick, and a support structure coupled to the casing and engaging the stick. In some example disposable swab assemblies, the support structure may provide the handle with a diameter substantially larger than a diameter of a swab stick, while still firmly holding the swab stick in place in the casing. In some examples, the diameter of the handle may be substantially the same as a diameter of the casing housing the swab.
Generally, the support structure comprises one or more structural features interposed between the swab stick and the casing to hold the swab stick in place in the housing and to provide a larger handle for the swab assembly. In one embodiment, for example, the support structure comprises ribs that extend radially from the stick to a wall of the casing and are coupled to the assembly. In another embodiment, the support structure comprises a set of cylinders or generally cylindrical shapes that are coupled to the assembly and give support to the stick. In other implementations, the support structure may comprise a number of cylinders further comprising at least a first cylinder coupled to the inner diameter of the second hollow portion and a second cylinder engaging the stick and coupled to an end of the second hollow portion. In still other embodiments, other shapes, sizes and configurations of support structure may be used.
In some implementations, the disposable swab assembly may be manufactured using an injection molding process. Other manufacturing techniques are also contemplated. For example, a blow-fill-seal process, a blow molding process or any other manufacturing process suitable for forming the dispenser may be used. Depending on the product to be housed in the disposable swab assembly and the manufacturing process, the disposable swab assembly may comprise a polymer, such as polyethylene, ethyl vinyl alcohol copolymer or any other suitable polymer, mixture or the like that is suitable for forming the disposable swab assembly. By way of example and not limitation, low-density polyethylene (LDPE), high-density polyethylene (HDPE) or, polypropylene (PP) may be used to form part or all of the disposable swab assembly.
As used herein, the term “swab” includes not only cotton swabs and synthetic swabs such as those used in the personal care setting, but also other swabs made of organic, inorganic, and/or composite materials (e.g. natural or synthetic sponges, natural or synthetic fibers, plastic fibers, cellulose fibers, or the like). Swabs may include both fibrous and non-fibrous materials. Also, while embodiments are described herein in terms of assemblies housing swab applicators other types of applicators and/or implements may also be used (e.g., brushes, picks, needles, sticks, tongue depressors, pipettes, or the like).
Furthermore, the casing 102 is a generally cylindrical shape in this embodiment but could alternatively be any shape that has an average diameter that could be generally described as being cylindrical. For example, the casing 102 could have an octagonal, rectangular, or ergonomically-shaped cross-section. The swab 104 may be used to apply any of a number of products. Products may comprise, for example, cosmetics, oral care products, medicinal products, vehicular lubricants, or any other liquid or powder product that may be applied using a swab and stick.
Furthermore, edges 408 of the ribs 402 disposed away from the end 114 of the second hollow portion 110 and towards the swab may form an acute angle relative to the portion of the surface 406 to which the ribs 402 are coupled, thereby facilitating easier insertion of the swab stick 106. A second angle may be added to the edges 408, decreasing the angle relative to the surface 406 to which the ribs 402 are coupled, thereby increasing a structural integrity and strength of the ribs 402. In further embodiments, any number of additional angles may be added to the edge so that the angle between the edge and the portion of the surface 404 to which the ribs 402 are coupled progressively decreases. In other embodiments, enough angles may be added such that the equations describing the edge would no longer be linear and would become a power, exponential, or other function describing a curve.
In some embodiments, the casing 102 and the support structure 400 may be formed as an integral unit of a single material. For example, the casing 102 may be formed, using a variety of manufacturing processes, such as injection molding, blow molding, or a blow-fill-seal process. Depending on the product to be contained and the manufacturing process used, the dispenser 102 may be made of a polymer, such as polyethylene, ethyl vinyl alcohol copolymer, low-density polyethylene (LDPE), high-density polyethylene (HDPE), polypropylene (PP) or any other suitable polymer, mixture or the like that is suitable for forming the dispenser 102.
In other embodiments, the support structure 400 may be formed separately from the casing 102 and inserted into the casing 102 during an assembly process.
In other embodiments, multiple cylinders may be used or the components of this embodiment of the support structure may be generally cylindrical in that the components have an average diameter. For example, a structure may replace the first or second cylinder having an inside diameter, a wall thickness, and six faces on the outside generally describing a hexagonally shaped exterior thereby being coupled with the inside diameter of the hollow portion at six points rather than continuously around the circumference of the inside diameter of the second hollow portion 110.
Further embodiments of the support structure may include substantially planar circular ribs having a thickness spaced from each other along the longitudinal axis of stick 106 and individually coupled to the inner circumference of the inner diameter of the second hollow portion 110 and engaging the stick 106. In this other embodiment, the ribs are disposed tangent to the longitudinal axis of the stick 106.
Any of the foregoing support structure examples may be combined or modified to arrive at other embodiments. For example, in one alternative embodiment, the distal end of the swab stick 106 opposite the swab may be disposed in a cylindrical receptacle (e.g., a shorter version of that shown in
The size, shape and configuration of the applicators 900A-900G may be configured depending on, for example, a product to be applied with the pick applicator and/or a surface to which the product is to be applied. Moreover, any of the applicators 900A-900G may be coated, impregnated, saturated, filled, or may otherwise include a product to be applied to a surface. Products may include medicinal products, personal care products, cosmetic products, adhesives, or any other product that can be applied using the aforementioned applicators. In some examples, such products may be in the form of liquids, gels, creams, powders, emulsions, or solids. In some examples, the applicator may actually be formed of the product that is to be applied (e.g., a pick applicator formed of solid, soluble oral care material).
Illustrative closed disposable swab assembly 200 or alternative illustrative closed disposable swab assembly 300 may be opened using the failure zone 202 by a variety of methods. For example, users may bend the casing in order to apply force to the failure zone, thereby breaking the casing 102 at the failure zone 202 and exposing the swab. Users may instead or additionally apply torsional, tensile, shear, or conjoint forces to the swab assembly 200 or 300. Examples of application of such forces may include but are not limited to pushing together or pulling apart the first hollow portion 108 and the second hollow portion 110, grasping the first hollow portion 108 and the second hollow portion 110 and twisting, squeezing the failure zone 202, or using a cutting device at the failure zone 202.
Process 1000 includes an operation 1002, which represents heating a material (e.g., polyethylene, polypropylene, ethyl vinyl alcohol copolymer) to a first temperature (e.g., about 130 degrees Celsius in the case of one particular embodiment). Next, process 1000 proceeds to operation 1004, which represents enclosing the material in a first mold. The first mold comprising a shape to form a first body. The mold includes cavities and/or protrusions to form a first hollow portion (e.g., first hollow portion 108) frangibly coupled to a second hollow portion (e.g., second hollow portion 110) which is included in the mold. The mold is further configured to provide a failure zone (e.g., failure zone 202), the failure zone being weaker relative to the remainder of disposable swab assembly, such that the failure zone is configured to break at the failure zone upon application of a predetermined force. Alternatively, in other embodiments, the failure zone could be formed as a subsequent finishing process (e.g., scoring) rather than as part of the molding process. The mold is further configured to provide a support structure (e.g., support structures 400 and 500). However in the illustrated process the swab stick is formed separately and subsequently inserted in the support structure 400 (or 500, 600, 700, or 800 depending on the particular embodiment). In some embodiments, a stick (e.g., stick 106) may also be formed by the mold. Process 1000 continues to operation 1006, where, a mandrel is used to inflate the material in the first mold to form the first body. Operation 1006 is followed by operation 1008 where the first body formed of the material is cooled (e.g., to about 50 degrees Celsius). Following operation 1008, at operation 1010 a stick and a swab (e.g., stick 106 and swab 104) may be attached and engaged with the support structure. Process 1000 continues with operation 1012, and subsequent to the cooling of the first body formed of the material, a mandrel is used to fill the first body with a product (e.g., a cosmetic, oral care product, medicine, or other product). In other embodiments, the swab may be inserted with the product previously applied to the swab. After operation 1012, process 1000 continues with operation 1014, where a second mold is used to seal the first body thereby forming the disposable swab assembly with a swab contained.
In this illustrative view of the disposable swab assembly, the first hollow portion 108 of the casing 102 is narrowed toward an end 112 of the first hollow portion 108 in this particular embodiment. However, the end 112 may be crimped in other embodiments depending on the manufacturing process chosen. An end portion 1104 of the second hollow portion 110 may be cylindrically shaped in some embodiments and may taper down to a portion 1106 of the casing that holds or otherwise fixes the stick 106 in place. In some embodiments, end 1104 is disposed opposite the end 112. The second hollow portion 110, the end portion 1104 and the portion 1106 of the casing 102 holding the stick 106 in place may be surrounded and engaged to a flat handle extension 1108. As shown in
Although in the embodiments illustrated in
Although embodiments have been described in language specific to structural features and/or methodological acts, the embodiments are not necessarily limited to the specific features or acts described. Rather, the specific features and acts are disclosed as illustrative forms of implementing the embodiments. For example, while embodiments are described having certain shapes, sizes, and configurations, these shapes, sizes, and configurations are merely illustrative. Also, while one example manufacturing process is described, disposable swab assemblies according to this disclosure may be made using any other suitable manufacturing process.
This application is a Continuation in Part of application Ser. No. 12/831,782, filed Jul. 7, 2007, which is incorporated by reference herein in its entirety.
Number | Date | Country | |
---|---|---|---|
Parent | 12831782 | Jul 2010 | US |
Child | 13717313 | US |