Abstract: An acoustic face mask reduces the distortion and muffling of speech sounds by a face mask wall. The distortion and muffling of speech sounds by a face mask wall may be reduced by reducing the acoustic coupling of the vocal tract and/or nasal cavity to the face mask chamber, which causes a reduction in the intelligibility of the speech. The acoustic coupling of the vocal tract and/or nasal cavity to the face mask chamber may be reduced, for example, by reducing the reflected sound energy caused by the face mask wall. For example, one or more sound absorbing members or acoustically transparent members reduce the reflected sound energy caused by the face mask wall.

Abstract: A facemask assembly and method of manufacturing the same includes a thermo-polymer strap along the nose and upper cheek areas that can be custom conformed by the wearer to create an effective seal in both those areas of the face plus can be flared inward/outward to enhance the seal below the chin. In some embodiments a snap-together, two-part framework is employed to increase the breathable filter surface area and bring such near the mouth and nose. In some embodiments, the facemask has a front clip component that enables inserting elastic tubing/strap adjustably below the nose or looped back and then also inserted below the mouth to create ear loops. In addition, the external front clip—pressing between the filter and the interior back frame—allows for the vertical adjustment of the strap/tubing to customize/optimize the facial seal.

Abstract: An anti-fogging face mask can include a main body, a formable seal, and baffles. The main body may include a panel sized for coverage of mouth and nostrils in a donned position of the face mask. The formable seal member may be disposed along an upper portion of the main body and arranged for obstructing vapor flow from the mouth or nostrils to eyewear when the eyewear is positioned over the face mask in the donned position. A first baffle may be extending rearwardly and upwardly away from the formable seal. A second baffle may be positioned below the first baffle and extending rearwardly and upwardly away from the formable seal. A third baffle may be positioned below the second baffle and extending rearwardly and downwardly away from the formable seal.

Abstract: A triboelectric personal protective equipment (PPE) includes a first layer of a first triboelectric material; a second layer of a second triboelectric material; a circuit configured to store and transfer triboelectric charge generated from the first layer and the second layer; a third layer and a fourth layer connected to and powered by the circuit. The first triboelectric material and a second triboelectric material have a difference in triboelectric charge density (TECD) of at least 35 ?C/m2. The third layer and the fourth layer provide an electric field that is configured to electrify particles having a size of 10 nm to 10 ?m between the third layer and the fourth layer.

Abstract: A surgical mask having partitions that isolate the respiration from the nose and mouth of a wearer into two separate compartments or volumes.

Abstract: A system for limiting access by rodents to an electrical socket, wire or other element includes a mesh sufficiently sized in width to wrap at least a portion of the electrical element and sufficiently sized in length to extend along at least a portion of the electrical element and a connector for engaging the mesh around the electrical element.

Abstract: An aftermarket device for attachment to a facial mask includes a strip, front fingers and back fingers. The front fingers fold over the strip for retaining an upper edge of a face mask. The strip is configurable to conform to a user's cheeks and around ridge of the user's nose for use. The back fingers are configurable to or otherwise extend along either side of the ridge of the user's nose when in use. The device conforms the facial mask to the user's face in vicinity of the upper edge of the mask, along the cheeks and the user's nose. The device lifts the facial mask from contact with at least a portion of the user's nose and from contact to the mouth.

Abstract: An aftermarket device for attachment to a facial mask includes a support layer and an adhesive segment. The support layer is sized to fold over and under a central portion of an upper edge of the facial mask and to extend laterally from centrally along the upper edge of the mask. The adhesive segment is connected to the support layer configured to connect to the facial mask. The device supports the facial mask during wear to conform the upper edge of the mask to a wearer's face along the nose and the cheeks under the eyes. The device extends the facial mask along bridge of the wearer's nose. The device may assist in comfort of mask wear, avoidance of irritation of the mask against skin, and limit frequent hand adjustment of the mask during wear.

Abstract: Systems and methods are provided for measuring the distortion and muffling caused by a face mask. For example, in one embodiment a simulated voice source produces a sound. The sound is then acoustically coupled to a simulated vocal tract and a face mask. A microphone receives sound and produces a signal and an analyzer receives the signal from the microphone. A manikin head or other facial structure may also simulate fitting of the face mask onto a face. The analyzer may further produce a quantitative assessment of the distortion and muffling of the face mask, for example, by comparing at least one spectrum obtained with the face mask and at least one spectrum obtained without the face mask.

Abstract: Protective masks and methods of manufacture, the protective masks including a front cover portion configured to face away from a face of a user in a tied configuration, a rear cover portion configured to face toward the face of the user in the tied configuration, a nose pocket disposed between the front cover portion and the rear cover portion, and a nosebridge disposed within the nose pocket.

Abstract: An acoustic face mask reduces the distortion and muffling of speech sounds by a face mask wall. The distortion and muffling of speech sounds by a face mask wall may be reduced by reducing the acoustic coupling of the vocal tract and/or nasal cavity to the face mask chamber, which causes a reduction in the intelligibility of the speech. The acoustic coupling of the vocal tract and/or nasal cavity to the face mask chamber may be reduced, for example, by reducing the reflected sound energy caused by the face mask wall. For example, one or more sound absorbing members or acoustically transparent members reduce the reflected sound energy caused by the face mask wall.

Abstract: The disclosed passive facemask embodiments having a single exchange port covered by a filter are from a family of transparent facemasks that do not obstruct visibility of a person's mouth when worn. One problem with a typical, widely used, facemask is the difficulty in understanding a person speaking when they are wearing the typical facemask. Not only does the listener have to contend with the muffled speech of a person talking through a facemask, communication is made worse by covering up, or otherwise hiding the wearer's mouth and face with opaque filter material. Accordingly, some embodiments described herein present a clear/see-through filtration mask embodiment that does not visibly obstruct a person's mouth by providing a filtration system along or near the periphery of the facemask.

Abstract: A surgical facemask includes a textile element configured to cover a mouth and nose region of a user, and an adhesive element applied to a perimeter of the textile element and configured to secure the textile element to a face of the user. Application of the surgical facemask using the adhesive element seals the mouth and nose region of the user from an exterior region such that particulate cannot traverse between the mouth and nose region and the exterior region without permeating the textile element.

Abstract: The disclosed anti-contagion facemask embodiments are a family of transparent facemasks that do not obstruct visibility of a person's mouth when worn. One problem with a typical, widely used, facemask is the difficulty in understanding a person speaking when they are wearing the typical facemask. Not only does the listener have to contend with the muffled speech of a person talking through a facemask, communication is made worse by covering up, or otherwise hiding the wearer's mouth and face with opaque filter material. Accordingly, some embodiments described herein present a clear/see-through filtration mask embodiment that does not visibly obstruct a person's mouth by providing a filtration system along or near the periphery of the facemask.

Abstract: A breathing equipment training device and a method for breathing training using a breathing equipment training device. The breathing equipment training device includes a shell and a diaphragm. The shell includes a first opening and a second opening, the first opening configured to be inserted into a breathing opening in a mask to form a connection with the breathing opening of the mask, and the second opening configured to be exposed to ambient air. The diaphragm is positioned in an inner cavity of the shell about the second opening, and configured to impede airflow into the shell through the second opening.

Abstract: An acoustic face mask reduces the distortion and muffling of speech sounds by a face mask wall. The distortion and muffling of speech sounds by a face mask wall may be reduced by reducing the acoustic coupling of the vocal tract and/or nasal cavity to the face mask chamber, which causes a reduction in the intelligibility of the speech. The acoustic coupling of the vocal tract and/or nasal cavity to the face mask chamber may be reduced, for example, by reducing the reflected sound energy caused by the face mask wall. For example, one or more sound absorbing members or acoustically transparent members reduce the reflected sound energy caused by the face mask wall.

Abstract: A breathing equipment training device and a method for breathing training using a breathing equipment training device. The breathing equipment training device includes a shell and a diaphragm. The shell includes a first opening and a second opening, the first opening configured to be inserted into a breathing opening in a mask to form a connection with the breathing opening of the mask, and the second opening configured to be exposed to ambient air. The diaphragm is positioned in an inner cavity of the shell about the second opening, and configured to impede airflow into the shell through the second opening and to traverse along an axis between the first and second openings.

Abstract: An apparatus, breathing equipment training device, and method for breathing equipment training. The apparatus includes a shell and a diaphragm. The shell includes a first opening and a second opening. The first opening is configured to be inserted into a breathing opening in a mask to form a connection with the breathing opening of the mask. The diaphragm is inside the shell and positioned about the second opening. The diaphragm is configured to impede airflow into the shell through the second opening. The first opening can be defined by a first ellipse insertable into the breathing opening of the mask. The second opening can be defined by a second ellipse through which airflow enters into the shell. A diameter of the second ellipse can be greater than a diameter of the first ellipse.

Abstract: The invention disclosed comprises a method and device for receiving an order request from a first party along with contact information for the first party, routing at least some communication made using, or to, second contact information, such as may be provided to the first party, and providing at least part of the order request and first contact information to a third party. The contact information may be a phone number or an e-mail address or a plurality of same.

Abstract: The invention disclosed comprises a method and device for receiving an order request from a first party along with contact information for the first party, routing at least some communication made using, or to, second contact information, such as may be provided to the first party, and providing at least part of the order request and first contact information to a third party. The contact information may be a phone number or an e-mail address or a plurality of same.