The present disclosure relates to capturing, holding and controlling (until disposal or killing) germs discharged into the environment primarily by human coughing or sneezing. More particularly, it relates to a germ absorbing and containing fabric (either natural or synthetic) incorporated into a device that can be attached to or worn on the hand, wrist or arm, the purpose of reducing the spread of germs.
Many of the products in the market, such as masks or tissues, are used for covering up or cleaning up germs, viruses, and bacteria created from coughing or sneezing. An average cough or sneeze can discharge about 100,000 contagious germs into the air at speeds up to about 100 miles per hour. While facial masks may be able to cover the germs from an unhealthy individual, the masks may be full of germs and inappropriate to use for longer than a certain duration of time. Similarly, tissues may be used to clean up the germs from an unhealthy individual who coughed or sneezed, but these tissues may still contain germs. When germs in these masks or tissues are not properly eradicated with germicide and thrown away properly, the masks and tissues may be a secondary source for additional contamination to the general public.
Relatedly, for those unhealthy individuals that do not carry masks or tissues with them or if they are not in a situation to use one when the coughing or sneezing happens, as an etiquette, the individual may cough into or sneeze into their clothes, into the crook of the elbow, into their hands, or into their forearm. However, even so, the germs discharged from the cough or the sneeze are likely to be there for a significant amount of time, as no effort was made to eradicate these germs using a germicide. For example, the discharged substance during coughing or sneezing is likely to remain on the clothes or the skin (if the individual coughed or sneezed into his/her bare skin instead of the clothes) and may risk those who come in contact with that individual's clothes or skin. By coughing or sneezing again into the same place, an individual would further increase the possibility of spreading the germs.
The present disclosure provides a germ absorbing member having therein a germ absorbing layer including germicides. In one or more embodiments, the germ absorbing member may implemented as a wearable cloth. The germ absorbing layer is configured to capture the aerosol droplets containing germs discharged from coughs and sneezes. The term germs as used herein includes any and all types of microbes, bacteria, viruses, or any biological organism that can cause harm to a person. The germ absorbing layer according to the present disclosure is configured to capture these aerosol droplets that travel at a high speed.
In one or more embodiments, the germ absorbing layer includes germicide materials or germicide layers to eradicate and neutralize the captured aerosol droplets containing germs discharged by coughs and sneezes. The germicide included in the wearable cloth may remove or kill the germs and effectively deter the spread of germs.
In one or more embodiments, once the germ absorbing layer is used, the layer may be detached from the wearable cloth and a new germ absorbing layer may be attached to the same corresponding location of the wearable cloth.
Accordingly, in a situation where a cough or sneeze occurs without warning or with little warning (for example, a person may not have sufficient time to reach into his or her bag or pocket for a facial mask, a handkerchief, or a tissue), the wearable cloth having a germ absorbing layer provides an individual with a timely and risk-free solution that prevents the spread of germs. That is, with the wearable cloth strapped around the arm, even the cough or sneeze comes without notice, the individual may quickly and timely cough or sneeze into the wearable cloth. Further, it will be a risk-free solution as the germs discharged from the nose and mouth will be caught by the germ absorbing layer and will be eradicated or neutralized through the germicide included in the germ absorbing layer.
To protect the general public health, there is an increasing need that germs from a cough or sneeze be effectively captured to control their spread. Society is entering a new phase in which there is an increasing vigilance to protect against the spread of any type of germs from one person to another and the present disclosure provides that protection. Particularly during times of low or modest contagion, masks are not generally worn in social circumstances such as around the home, office, work floor of a factory, or other public place. Every-day living, for everyone, may now require a better means to capture coughs and sneezes without masks, just about all the time. An easy-to-use, physically comfortable, inexpensive, socially unobtrusive means of capturing discharged germ-containing moisture droplets and holding such droplets for proper sanitary disposal protocol is provided herein.
Reference will now be made by way of example to the accompanying drawings. In the drawings, identical reference numbers identify similar elements or acts. In some drawings, however, different reference numbers may be used to indicate the same or similar elements. The shapes of various elements and angles are not necessarily drawn to scale, and some of these elements may be enlarged and positioned to improve drawing legibility:
In the following description, certain specific details are set forth in order to provide a thorough understanding of various disclosed embodiments. However, one skilled in the relevant art will recognize that embodiments may be practiced without one or more of these specific details, or with other methods, components, materials, etc. In other instances, well-known structures or methods associated with germ absorbents, germicides, and attachment structures have not been shown or described in detail to avoid unnecessarily obscuring descriptions of the embodiments.
Unless the context indicates otherwise, throughout the specification and claims which follow, the word “comprise” and variations thereof, such as, “comprises” and “comprising” are to be construed in an open, inclusive sense that is as “including, but not limited to.” Further, the terms “first,” “second,” and similar indicators of the sequence are to be construed as interchangeable unless the context clearly dictates otherwise.
Reference throughout this specification to “one embodiment” or “an embodiment” means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases “in one embodiment” or “in an embodiment” in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” include plural referents unless the content clearly dictates otherwise. It should also be noted that the term “or” is generally employed in its broadest sense, that is, as meaning “and/or” unless the content clearly dictates otherwise.
The germ absorbing layer 120 may be a disposable pad that can be peeled off after use. For example, when the germ absorbing member 100 is worn on the user's arm, the user can cough or sneeze into the germ absorbing layer 120 while the germ absorbing member 100 is attached to the arm and after a single use or a predetermined number of uses, the germ absorbing layer 120 can be peeled off and discarded. The germ absorbing layer 120 may be a biodegradable material.
The term germ as used herein is used to comprehensively include any byproducts such as microorganisms, microbes, mucous, bacteria (e.g., Streptococcus pneumonia, Haemophilus influenza, tuberculosis, pneumonia, etc.), viruses, mucus, irritants, bacillus, bugs, saliva, respiratory pathogens, substances causing influenza (e.g., respiratory syncytial virus (RSV), adenoviruses, etc.) and other infectious substances expelled from coughing or sneezing. Generally, these germs may burst out from the user in the form of microscopic aerosol droplets.
The germ absorbing layer 120 is incorporated into an article (i.e., germ absorbing member 100) which is worn on an arm of a user for catching and eradicating germs from the user's orifices (e.g., mouth or nose). The germ absorbing member 100 may be attached to the arm of the user in a semi-permanent manner. The user can cough or sneeze into the germ absorbing layer 120 by putting the user's orifices against the germ absorbing layer 120 to catch germs. The germ absorbing layer 120 may be implemented using a spongy absorbing material, fabric, fiber, or the like. The term “fiber” as used herein includes structure that is made having filaments or threads, whether synthetic or natural. Synthetic fibers include rayon, nylon, polyester, polyurethane, polyether, polyurethane-urea, resin, acrylic, polyolefin, and other man made materials. A polyurethane, polyether, or polyurethane-urea fiber that incorporates a water absorbing resin will normally be preferred to a nylon or polyolefin that are more likely to repel water. Natural fibers include wool, silk, cotton, linen, tree derivatives (bark, paper, etc.) hemp, flax, and many more. The natural fiber will be selected for its moisture adhering and absorbing properties, so it is much likely to use a cotton or tree fiber derivative rather than a wool or a linen.
The germ absorbing layer 120 may be elastic so that the user can seal his or her mouth or nose around it.
The moisture absorbing barrier 130 and the germ absorbing layer 120 which are implemented as a pad (or a sheet) may have an adhesive layer at the back of each pad. This adhesive layer is exposed whenever either the germ absorbing layer 120 or the moisture absorbing barrier 130 is peeled off. This allows the moisture absorbing barrier 130 to stick to the bare skin or the cloth (e.g., sleeve) of a user. In some embodiments, the germ absorbing member 100 may not require the attachment member 140 when the moisture absorbing barrier 130 has an adhesive backing. This embodiment will be explained in detail later on. The germ absorbing layer 120 or the moisture absorbing barrier 130 may adhere to the user with the help of the adhesive backing and may be entirely disposable after a single use or a predetermined number of uses.
The moisture absorbing barrier 130 is constructed having a layer of moisture impermeable material so that the germs from the germ absorbing layer 120 do not penetrate into the skin or cloth of the user. In some embodiments, impermeable fibers, non-plastic impermeable materials, a thin plastic layer, a sealing material and any other suitable materials can be used as one layer in the moisture absorbing barrier 130 and the disclosure is not limited to these examples.
The moisture absorbing barrier 130 may have a first adhesive layer arranged on a first side of the moisture absorbing barrier 130. The first side of the moisture absorbing barrier 130 faces side 152 of the clothing 150. A second side of the moisture absorbing barrier 130, which is opposite of the first side, directly contacts the germ absorbing layer 120. A second adhesive layer may be arranged between the germ absorbing layer 120 and the moisture absorbing barrier 130. The second adhesive layer allows the germ absorbing layer 120 to easily attach and detach so that the germ absorbing layer 120 may be disposed of after use. A new germ absorbing layer 120 may be attached onto the second adhesive layer so that the user can cough or sneeze again into the germ absorbing member 100. For example, the rectangular pad-like germ absorbing layer 120 may be peeled off by pulling one end of the germ absorbing layer 120 and may be reattached to the germ absorbing member 100.
The first and second adhesive layers may have properties so that they firmly but gently adhere to the skin or cloth of a user but do not have stickiness.
In one or more embodiments, the germ absorbing layer 120 is adjacent to the ambient air. For example, the germ absorbing layer 120 abuts the ambient air. A top surface of the germ absorbing layer 120 is in direct contact with the ambient air, and the user coughs or sneezes into the germ absorbing layer 120.
The germ absorbing member 100 according to the present disclosure may have a first adhesive layer arranged between the moisture absorbing barrier 130 and the skin or cloth of the user and a second adhesive layer arranged between the germ absorbing layer 120 and the moisture absorbing barrier 130. In some embodiments, the first and second adhesive layers may use the same type of adhesives. In other embodiments, the first adhesive layer may have stronger adhesive properties than the second adhesive layer so that the germ absorbing member 100 is securely fixated to the arm 110 of the user. In some embodiments, where the first adhesive layer provides firm attachment, the attachment member 140 may be omitted. For example, the germ absorbing member 100 may include the germ absorbing layer 120, the moisture absorbing barrier 130, the first adhesive layer, and the second adhesive layer. Here, the user will not need the attachment member 140 to strap the germ absorbing member 100 to the arm of the user.
The germ absorbing layer 120 as shown in
Referring to
Even though the germ absorbing member 100 is positioned around the elbow 170 of the user, the attachment member 140 may be implemented as an elastic arm band. Accordingly, the user may slidably move the germ absorbing member 100 to any location upon the arm (e.g., any location from the wrist to the shoulder of the user).
In one or more embodiments, the moisture absorbing barrier 130 may be coupled to the germ absorbing layer 120 and may be removed or peeled off from the attachment member 140 together. Once a used germ absorbing layer 120/moisture absorbing barrier 130 is peeled off, a new germ absorbing layer 120/moisture absorbing barrier 130 may be attached onto the attachment member 140. The moisture absorbing barrier 130 has an adhesive material or an adhesive layer on the backing of the moisture absorbing barrier 130 and can be attached in the direction as shown by the arrow 600.
The attachment straps 145 are made with a stretchable material that can extend and contract accordingly to fit the circumference of the user's arm. In some embodiments, the attachment member 140 and the attachment straps 145 may both have stretchable properties to securely strap around the user's arm. In other embodiments, the attachment member 140 may be a relatively less stretchable material compared to the attachment straps 145. In this embodiment, the first attachment strap 145A may have relatively more significant stretchable properties so that it may extend all the way to connect the first sticking portion 146A to the first receiving sticking portion 147A. This will hold the relatively non-stretchable member 140 in place while the stretchable member 145 completes the circle to create the attachment to the arm.
As described, the first attachment straps 145A may be implemented as a stretchable strap or an elastic strap and can be extended toward a direction as shown in the arrow 610 to connect the first sticking portion 146A of the attachment strap 145A to the first receiving sticking portion 147A of the attachment member 140.
As shown in
A first attachment strap 145A is extended toward a direction as shown in the arrow 610 and temporarily adheres the first sticking portion 146A of the attachment strap 145A to the first receiving sticking portion 147A of the attachment member 140. The user may detach the first sticking portion 146A from the first receiving sticking portion 147A when the user is not using the germ absorbing member 100. Then the attachment strap 145 may contract to its original size or default state.
As shown in
When the germ absorbing layer 120 is adhered to the surfaces of the attachment member 140, an adhesive layer may be used to easily stick the germ absorbing layer 120 to the surfaces of the attachment member 140. The adhesive layer may have suitable adhesivity to attach the germ absorbing layer 120 to the attachment member 140 as well as to detach the germ absorbing layer 120 from the attachment member 140.
The germ absorbing layer 120 shown in
In some embodiments, the attachment member 140 may be implemented as a light bracelet spring. The attachment strap 145 may extend in many shapes.
At the end of the first attachment strap 145A is a first sticking portion 146A and at the end of the second attachment strap 145B is a second sticking portion 146B. When the user initially attaches the germ absorbing member 100 around the user's arm, the user extends the first attachment strap 145A and adheres the first sticking portion 146A to the first receiving sticking portion 147A. Similarly, the user extends the second attachment strap 145B and adheres the second sticking portion 146B to the second receiving sticking portion 147B. In some embodiments, the elasticity or the stretchability of the first attachment strap 145A and the second attachment strap 145B may differ from each other.
In some embodiments, the bracelet 180 may be made of metal or plastic. This metal or plastic may have some pliability or elasticity to widen the opening for the user's wrist 190. The size and dimension of the bracelet 180 may vary depending on the user's personal preference. While the bracelet 180 as shown in
In one or more embodiments, the moisture absorbing barrier 130 having thereon the germ absorbing layer 120 may be, in itself, a standalone, commercial product. That is, the bracelet 180 does not necessarily have to be a bracelet 180 according to the present disclosure. It may be any kind of bracelet that the moisture absorbing barrier 130 and the germ absorbing layer 120 can adhere to. For example, the product may be implemented as a thin pad or a thin sheet having an adhesive backing. The adhesive backing may be attached with a thin flexible plastic or vinyl so that the user can keep the pad/sheet inside the user's pocket without having the adhesives sticking onto the user's clothing. That is, having a flexible plastic on the back of the moisture absorbing barrier 130 that has been treated with adhesives allows the user to keep the pad/sheet inside the user's pocket without having to worry about the adhesives sticking into the user's clothing. For example, a liner may be used to temporarily cover the adhesive backing.
In one or more embodiments, the moisture absorbing barrier 130 may be coupled to the germ absorbing layer 120 and may be removed or peeled off from the attachment member 140 together. Once a used germ absorbing layer 120/moisture absorbing barrier 130 is peeled off, a new germ absorbing layer 120/moisture absorbing barrier 130 may be attached onto the attachment member 140. The moisture absorbing barrier 130 has an adhesive material or an adhesive layer on the backing of the moisture absorbing barrier 130 and can be attached in the direction as shown by the arrow 700.
In other embodiments, the moisture absorbing barrier 130 and the bracelet 180 may be coupled together and only the germ absorbing layer 120 may be removed or peeled off. Once a used germ absorbing layer 120 is peeled off, a new germ absorbing layer 120 may be attached onto the bracelet 180.
In some embodiments, the germ absorbing member 100 may be implemented with a soft, sponge-like fiber material so that the user 200 can comfortably cough or sneeze into the germ absorbing member 100 without experiencing irritation to the user's face. That is, the soft, sponge-like fiber material may also be implemented as a breathable type material.
Although
In some embodiments, the germ absorbing member 100 may be implemented with an elastic, stretchable arm band that is used around the user's wrist 190. The top surface of the germ absorbing member 100 (i.e., the germ absorbing layer 120) may be made with a soft, sponge-like fiber material so that the user 200 can comfortably cough or sneeze into the germ absorbing member 100 without experiencing irritation to the user's face.
Although
The exterior surface of the germ absorbing member 100 has undulations consisting of a plurality of ridges 112 and a plurality of valleys 114. This is a cloth having a corrugated surface with a large exposed surface area. As described previously, a single sneeze can send about 100,000 germs into the air. In order to capture aerosol droplets from coughs and sneezes, the exterior surface of the germ absorbing member 100 has a plurality of ridges 112 and a plurality of valleys 114 to increase the surface area in which the airborne aerosol droplets can land on or be captured. The most critical time for spread of those germs is in the first moments after a cough or sneeze occurs and an increased surface area can ensure that the aerosol droplets including germs are captured and neutralized.
The cloth can be stretched out have lower ridges and less deep valleys or have the ends pushed towards each other provide higher ridges and deeper valleys while taking up less room on a person's arm. In one embodiment, the cloth can be worn having valleys and ridges that have double the surface area of straight cloth when not compressed at both ends. The same surface area is present on the cloth, but with the undulations the user can bunch both ends together and make the cloth have a short lineal distance on the arm. When the user is about to sneeze or cough, they can stretch the ends apart and thus provide a broad surface area to capture the sneeze. The cloth can be compressed again at both ends to old the captured germs and debris inside the folds of the cloth, pressed on the sidewalls between the ridges and the valleys. Any germs or debris that landed on the cloth are completely enclosed and captured. They have no further exposure to the air. Different parts of the cloth of
The increased surface area also assists in preventing the transmission of these aerosol droplets. The aerosol droplets often have a diameter less than the width of a human hair. The small size of the aerosol droplets adds the potential to penetrate deeper in the lungs. Moreover, the small size of the aerosol droplets causes the droplets to take significant time to eventually drop to the ground. That is, the droplets may remain suspended in the air for prolonged periods of time. Accordingly, having the user cough or sneeze into the germ absorbing member 100 having multiple undulations helps to capture the small sized aerosol droplets.
The germ absorbing member 100 has germicide particles 122 spread on the exterior surface. The germicide particles 122 include disinfectants that may eradicate or neutralize germs and pathogens. In addition, the germicide particles 122 include antiviral, antifungal, antimicrobial, antibacterial, and herbal materials to clean or sanitize the collected germs. The germicide particles 122 may further include any suitable germ absorbents or substances capable of neutralizing antigens. In one or more embodiments, the germicide particles 122 are non-toxic which will be safe for the user to use. Accordingly, a user coughing or sneezing into the germ absorbing member 100 containing the germicide particles 122 may have their orifices such as mouth and nose on the corrugated shaped cloth of the germ absorbing member 100.
The germ absorbing member 100 may be discarded after a predetermined number of uses or after a single use. Because once the germicide particles 122 absorbs and neutralizes the germs, the germicidal function of the germicide particles 122 is exhausted, there may be a limit for repeatedly cleaning and reusing the corrugated shaped cloth of the germ absorbing member 100.
Although not shown, the germ absorbing member 100 having a corrugated shaped cloth may have a moisture absorbing barrier 130 underneath so that the moisture and germs absorbed in the exterior surface does not permeate into and contact the skin or the clothes of the user. In these embodiments, the attachment member 140 may be omitted as the corrugated shaped cloth performs the attachment function.
The germicide particles 122 are spread out on the outer surfaces of the germ absorbing layer 120. In other embodiments, the germicide particles 122 are chemically or thermally treated so that the germicide particles 122 are included in the germ absorbing layer 120.
In some embodiments, the texture of the germ absorbing layer 120 is manufactured to have a sponge-like material. For example, the germ absorbing layer 120 may be a spongy, absorbing type of fabric.
The cross-section of the germ absorbing layer 120 is similar to the cross-section of the germ absorbing layer 120 shown in
In other embodiments, the cross-section of the germ absorbing layer 120 may have a triangular shape instead of a square shape or a rectangular shape. As described previously, even though the cross-section may have a triangular shape, the material is formed with a soft fiber or a sponge-like fiber so a user may not be scratched or irritated by the contact with the germ absorbing layer 120.
The side walls are adjacent to the bottom surface. The side walls are configured to prevent the escape of germs to the ambient air. To increase the surface area that the germs may contact, the bottom surface has a plurality of square tabs that projects upward toward the opening of the cup where the mouth or nose is meant to be placed.
In one embodiment, the height H is between double and triple the width W and the distance D is between one-half and one-quarter the width W. This provides a very large surface area along the sidewall of the ridge 124 extending from the top of layer 130 to the top of the layer 120 for each ridge member. The sidewall of the ridge 124 in the layer 120 thus provides a large surface area that is more than double the surface area of that of the W and D combined. This large surface area on the sidewall of the ridge 124 provides an increased surface area to capture and retain germs. It can be used for a much longer time without being filled. It also will hide the debris from the cough or sneeze.
In one or more embodiments, to obtain a germ absorbing fiber or a germ capturing fiber as part of a germ absorbing layer 120, the germicide particles 122 may be chemically added onto the top surfaces and the side surfaces of the square shaped fiber. The areas spaced between the neighboring ridges 124 may also be treated with the germicide particles 122 so that the fiber can catch germs, viruses, bacteria, etc.
In can be readily appreciated that the surface area shown in
In one or more embodiments, to formulate a semi-circle shaped germ absorbing or germ capturing fiber as part of a germ absorbing layer 120, the germicide particles 122 may be chemically added onto the flexible fiber so that the germicide particles 122 can catch germs, viruses, bacteria, etc.
In one or more embodiments, to formulate a germ absorbing fiber or a germ capturing fiber as part of a germ absorbing layer 120, the germicide particles 122 may be chemically added onto the flexible filament 125 so that the germicide particles 122 can more easily catch and retain germs. In can be readily appreciated that the surface area for capturing and retaining germs shown in
That is, the germicide particles in the germ absorbing layer can capture the germs expelled into the air when a user coughs or sneezes into the germ absorbing member and eradicate the germs. Here, in order to enhance the probability of capturing most of the germs expelled, the germ absorbing layer includes various fibers in the form of filaments 125 with shapes and patterns. The flexible filaments are treated to have germicide particles in them. The various shapes, sizes, and patters of the flexible filaments create a large surface area that the germs can contact when they are expelled into air. The germ absorbing filaments may neutralize the germs and the used germ absorbing layer may be discarded. A new germ absorbing layer may be attached to the wearable member for repeated use.
To further elaborate the need of an increased surface contact area for germs, for example, one cough or sneeze can discharge an average about 50,000 droplets. Each droplet may have about 20 bacteria in it which sums up to about 100,000 contagious bacteria or germs on one cough or sneeze. Accordingly, having a plurality of wavy fibers on the surface of the germ absorbing member 100 can ward off catching germs, viruses, bacteria, etc. To elaborate, for viruses like colds and flus, at least about 1,000 contagious bacteria or germs is required to cause infection.
To substantially mitigate this, in some embodiments of the present disclosure, the wavy filaments 125 may be implemented using materials having hydrophilic properties. This may significantly increase the probability of the moisture droplets sticking to the wavy filament. In further embodiments, both employing materials having hydrophilic properties and increasing the contact surface area may be utilized to maximize the capture rate of the droplets.
In the design of
The preferred diameter will be different depending on the properties of the filament 125. If the primary property of the filament is to capture and hold germs on the outer diameter, then having many filaments that are in the smaller diameter range is preferred to provide an overall larger surface area of the combined filaments 125 as a whole on the layer 130. This would tend towards having filaments in the range of 0.05 to 0.1 mm. Since the diameter is smaller, there would be more filaments in a given area on the layer 130. For some types of hydrophilic filaments, their operation might be to draw moisture into the core of the filament and hold the moisture on the inside. For this type of filament, a larger internal area is preferred since moisture is being held on the inside. Thus, for particular hydrophilic filaments, an average diameter in the range of 0.5 to 1.5 mm is preferred. There will be fewer filaments in a given surface area, but a larger internal area of the layer 120 is provided in the layer 130 as a whole.
For example, the filament 125 can be a synthetic fiber produced by incorporating a water absorption resin having a water absorption ratio in a range from 500 to 4000% by weight into an elastic fiber such as a polyurethane fiber or a polyurethane-urea fiber in a finely dispersed state in an amount in a range from 1 to 15% by weight relative to a fiber-forming polymer.
The length of each filament 125 is in the range of 5 mm to 10 mm, with a preferred length of 5 to 7 mm. The length is therefore about 10 to 12 times greater than the diameter and is some embodiments the length will be in the range of 25 to 50 times greater than the diameter. The spacing between the filaments 125 is also selected to provide a high capture rate of the germs. If the filaments are overly dense, the drops carrying the germs cannot get into the body of the filaments since the tops will be close to each other, which would defeat the goal of capturing the germs and debris on the sidewalls and interior of the filaments. If they are too sparse, there will not be as many filaments as could be used to capture a large quantity of germs. Given these parameters, testing of the particular filament selected for each application can be carried by those skilled in the art to select a desired diameter, spacing and density. It is expect that it will be different for the different types of filaments. For example, a cotton fiber filament will have different spacing and properties than a synthetic one made of rayon, which will be different again from one made of polyester or a polyurethane with resin inside.
In a preferred embodiment, the open space 127 between the filaments 125 at the base where they attach to the layer 130 will always be greater than the diameter of the filament itself and in another preferred embodiment, the space 127 is between 1.5 and 4 times the diameter of each individual filament at their base. The space 127 might be as great as 10 times their diameter in other embodiments. Of course, for the wavy filaments 125, the ends might entangle and they might become very close or cross each other along their lengths, which is permitted and in some designs desirable to catch and retain more germs and debris. The spacing 127 is measured at the base, where the filaments 125 attach to the layer 130. As can be seen in 16D, the distances do not need to be uniform. They can be uniform as shown in 16C and all be the same space 127. Alternatively, the space 127 between them can vary from a small distance of one diameter apart to as much as 10 diameters apart, all in the same structure. This permits high density filaments 125 to be provided, but with sufficient spacing that germs and debris can enter between the filaments 125 and be captured.
A person of ordinary skill in the art will readily appreciate that based on the embodiments described in
The distance between each filaments 125 shown in 17B is not to scale and they will usually be more dense with the shorter filaments 125b being more densely packed, namely closer to each other than the longer filaments 125a.
The longer filaments 125a might be about 2 to 3 times longer than the shorter filaments 125b. They may have a space between them that is about 1.5 to 2.5 times greater than the space between the shorter filaments. The spacing between them can gradually increase as the length of the filaments 125a is increasingly longer, the further from the face.
The various embodiments described above can be combined to provide further embodiments. These and other changes can be made to the embodiments in light of the above-detailed description. In general, in the following claims, the terms used should not be construed to limit the claims to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled. Accordingly, the claims are not limited by the disclosure.
This application is a continuation of U.S. patent application Ser. No. 16/840,192, filed Apr. 3, 2020, which is hereby incorporated by reference in its entirety.
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Number | Date | Country | |
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Parent | 16840192 | Apr 2020 | US |
Child | 17099227 | US |