A resistance breathing device includes a face mask having a plurality of apertures extending therethrough. The face mask is adapted to overlay a user's mouth and nose and to form an air-tight seal with the user's face. The device also includes an outer layer overlaying the face mask and having a pai
A resistance breathing device includes a face mask having a plurality of apertures extending therethrough. The face mask is adapted to overlay a user's mouth and nose and to form an air-tight seal with the user's face. The device also includes an outer layer overlaying the face mask and having a pair of straps for affixing said face mask about the user's face. The device also includes at least one air admittance valve assembly disposed within a corresponding one of the apertures of the face mask. The air admittance valve assembly is adjustable to provide a selected degree of air flow therethrough. The device also includes at least one air exhaust valve assembly disposed within a corresponding one of the apertures of the face mask. The air exhaust valve assembly prevents air from passing into the face mask and allows air to pass out of the face mask.
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1. A resistance breathing device, comprising: a face mask having an exterior surface, an interior surface opposite said exterior surface, a plurality of apertures, each of which extends through said face mask from said exterior surface to said interior surface, and a perimeter, wherein said face mas
1. A resistance breathing device, comprising: a face mask having an exterior surface, an interior surface opposite said exterior surface, a plurality of apertures, each of which extends through said face mask from said exterior surface to said interior surface, and a perimeter, wherein said face mask is adapted to overlay a user's mouth and nose such that said perimeter forms an air-tight seal with the user's face and around the user's mouth and nose and said face mask defines an internal area between said interior surface of said face mask and the user's face;an outer layer overlaying said face mask and having a pair of straps with inter-engaging ends for affixing said face mask about the user's face;a plurality of air admittance valve assemblies, each of which is disposed within a corresponding one of said plurality of apertures of said face mask, each of said plurality of air admittance valve assemblies including a base configured to be removably fixed within said corresponding one of said plurality of apertures of said face mask and including a plurality of holes extending therethrough, each of said plurality of air admittance valve assemblies further including a cap attached to said base and including a plurality of holes extending therethrough, said cap being rotatable relative to said base between a first position, in which a first subset of holes of said plurality of holes of said cap are aligned with a corresponding first subset of holes of said plurality of holes of said base such that said base and said cap cooperate to allow a first amount of air flow through said each of said plurality of air admittance valve assemblies from an external environment to said internal area, and a second position, in which a second subset of holes of said plurality of holes of said cap are aligned with a corresponding second subset of holes of said plurality of holes of said base such that said base and said cap cooperate to allow a second amount of air flow through said each of said plurality of air admittance valve assemblies from the external environment to said internal area, said first amount of air flow being greater than said second amount of air flow, wherein said cap of each air admittance valve assembly further includes at least one groove formed therein and said base of each air admittance valve assembly includes at least one longitudinal ridge which cooperates with said at least one groove to resist rotation of said cap relative to the base; anda plurality of air exhaust valve assemblies, each of which is disposed within a corresponding one of said plurality of apertures of said face mask, each of said plurality of air exhaust valve assemblies including a base fixed within said corresponding one of said plurality of apertures of said face mask and including an air passageway extending therethrough, a flexible membrane disposed movably within said air passageway, and a cap attached to said base and retaining said flexible membrane within said air passageway wherein, in response to an inhalation by the user, said flexible membrane is urged to a first position that occludes said air passageway such that air is prevented from passing through said air passageway from the external environment to said internal area, and wherein, in response to an exhalation by the user, said flexible membrane is urged to a second position that does not occlude said air passageway such that air is enabled to pass through said air passageway from said internal area to the external environment. 2. The resistance breathing device of claim 1, wherein said base of each of said plurality of air admittance valve assemblies includes a first end, a second end opposite said first end, a cylindrical body extending from said first end to said second end, and an air passageway, said air passageway of said base of each of said plurality of air admittance valve assemblies extending through said cylindrical body of said base of each of said plurality of air admittance valve assemblies from said first end to said second end, said base of each of said plurality of air admittance valve assemblies being disposed within said corresponding one of said plurality of apertures of said face mask such that said first end of said base of each of said plurality of air admittance valve assemblies is proximate said interior surface of said face mask and said second end of said base of each of said plurality of air admittance valve assemblies is proximate said exterior surface of said face mask, said base of each of said plurality of air admittance valve assemblies being sized and shaped such that said corresponding one of said plurality of apertures of said face mask forms an air-tight seal about said base of each of said plurality of air admittance valve assemblies. 3. The resistance breathing device of claim 2, wherein said base of each of said plurality of air admittance valve assemblies includes an end portion occluding said air passageway of said base proximate said second end of said base, said plurality of holes of said base of each of said plurality of air admittance valve assemblies extending through said end portion, said plurality of holes of said base of each of said plurality of air admittance valve assemblies being arranged in arcuate arrangement, wherein said plurality of holes of said cap of each of said plurality of said air admittance valve assemblies is arranged in arcuate arrangement. 4. The resistance breathing device of claim 3, wherein said base of each of said plurality of air admittance valve assemblies includes a projection extending from said end portion of said base toward said cap of said each of said plurality of air admittance valve assemblies, wherein said cap of said each of said plurality of air admittance valve assemblies includes a depression receiving said projection of said base of said each of said plurality of air admittance valve assemblies therein, said depression having a first end and a second end opposite said first end, and wherein the rotation of said cap of said each of said plurality of air admittance valve assemblies relative to said base of said each of said plurality of air admittance valve assemblies causes said depression of said cap of said each of said plurality of air admittance valve assemblies to move relative to said projection of said base of said each of said plurality of air admittance valve assemblies such that said first end of said depression of said cap of said each of said plurality of air admittance valve assemblies is adjacent said projection of said base of said each of said plurality of air admittance valve assemblies when one of said plurality of holes of said cap of said each of said plurality of air admittance valve assemblies is aligned with one of said plurality of holes of said base of said each of said plurality of air admittance valve assemblies, and such that said second end of said depression of said cap of said each of said plurality of air admittance valve assemblies is adjacent said projection of said base of said each of said plurality of air admittance valve assemblies when each of said plurality of holes of said cap of said each of said plurality of air admittance valve assemblies is aligned with a corresponding one of said plurality of holes of said base of said each of said plurality of air admittance valve assemblies. 5. The resistance breathing device of claim 3, wherein said at least one longitudinal ridge of said base of each of said plurality of air admittance valve assemblies and said at least one groove of said cap of said each of said plurality of air admittance valve assemblies are positioned such that said at least one longitudinal ridge is positioned within a corresponding one of said at least one groove when one or more of said plurality of holes of said cap of said each of said plurality of air admittance valve assemblies is aligned with a corresponding one of said plurality of holes of said base of said each of said plurality of air admittance valve assemblies. 6. The resistance breathing device of claim 2, wherein said base of each of said plurality of air admittance valve assemblies comprises at least one flange sized, shaped and positioned to retain said base within said face mask. 7. The resistance breathing device of claim 2, wherein said base of each of said plurality of air admittance valve assemblies and said cap of each of said plurality of air admittance valve assemblies are each made from a plastic material. 8. The resistance breathing device of claim 1, wherein said base of each of said plurality of air exhaust valve assemblies includes a first end and a second end opposite said first end, said air passageway of said base of each of said plurality of air exhaust valve assemblies extending therethrough from said first end to said second end, said base of each of said plurality of air exhaust valve assemblies being disposed within said corresponding one of said plurality of apertures of said face mask such that said first end of said base of each of said plurality of air exhaust valve assemblies is proximate said interior surface of said face mask and said second end of said base of each of said plurality of air exhaust valve assemblies is proximate said exterior surface of said face mask, said base of each of said plurality of air exhaust valve assemblies being sized and shaped such that said corresponding one of said plurality of apertures of said face mask forms an air-tight seal about said base of said each of said plurality of air exhaust valve assemblies, said base of each of said plurality of air exhaust valve assemblies further including a biasing member extending across said air passageway proximate said first end, and a stem extending from a center of said biasing member toward said second end, wherein said flexible membrane of each of said plurality of air exhaust valve assemblies includes a first side, a second side opposite said first side, a profile complementary to said air passageway of said base of said each of said plurality of air exhaust valve assemblies, a post extending from said first side, and a central hole extending through said post and said flexible membrane, said flexible membrane of each of said plurality of air exhaust valve assemblies being disposed within said base of said each of said plurality of air exhaust valve assemblies such that said stem of said base of said each of said plurality of air exhaust valve assemblies is disposed within said central hole of said flexible membrane of said each of said plurality of air exhaust valve assemblies, andwherein said cap of each of said plurality of air exhaust valve assemblies includes a first side and a second side opposite said first side of said cap, said cap of each of said plurality of air exhaust valve assemblies being attached to said second end of said base of said each of said plurality of air exhaust valve assemblies, said cap of each of said plurality of air exhaust valve assemblies having a post extending from said first side of said cap and having a central bore receiving said stem of said base of said each of said plurality of air exhaust valve assemblies. 9. The resistance breathing device of claim 8, wherein, in response to the inhalation by the user, said flexible membrane of each of said air exhaust valve assemblies is urged to a position flush against said biasing member of said base of said each of said plurality of air exhaust valve assemblies, whereby said flexible membrane of each of said plurality of air exhaust valve assemblies seals said air passageway of said base of said each of said plurality of air exhaust valve assemblies. 10. The resistance breathing device of claim 8, wherein, in response to the exhalation by the user, said flexible membrane of each of said air exhaust valve assemblies is urged away from said biasing member of said base of said each of said air exhaust valve assemblies, whereby air can pass freely through said air passageway of said base of each of said air exhaust valve assemblies. 11. The resistance breathing device of claim 8, wherein said flexible membrane of each of said air exhaust valve assemblies is made from silicone. 12. The resistance breathing device of claim 8, wherein said cap of each of said air exhaust valve assemblies and said base of each of said air exhaust valve assemblies are each made from a plastic material. 13. The resistance breathing device of claim 8, wherein said base of each of said air exhaust valve assemblies includes at least one flange sized, shaped and positioned to retain said base within said face mask. 14. The resistance breathing device of claim 1, wherein said outer layer includes a fabric material. 15. The resistance breathing device of claim 14, wherein said fabric material includes an elastic material. 16. The resistance breathing device of claim 1, wherein said straps of said outer layer include hook-and-loop fasteners. 17. The resistance breathing device of claim 1, wherein said face mask includes rubber.
Danford, Casey J., High performance ventilatory training mask incorporating multiple and adjustable air admittance valves for replicating various encountered altitude resistances.
Kotliar, Igor K., Method of producing hypoxic environments in occupied compartments with simultaneous removal of excessive carbon dioxide and humidity.
Ulrike Horstel DE; Susanne Codoni CH; Barbara Rehm CH, Method of treatment of groups of muscles in an orofacial region by using an inflatable rubber balloon as logopedic aid.
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