Breathing Mask With Variable Airflow Resistance Insert
First Claim
1. A breathing resistance insert for a breathing mask, comprising:
- an air resistance valve including,a cap having a first surface and a second surface opposite said first surface, and a first plurality of apertures each of which extends from said first surface to said second surface, said first plurality of apertures being spaced apart from one another and arranged in an arcuate arrangement, anda base attached rotatably to said cap, said base having a shank portion and a head located at one end of said shank portion, said head having a first surface and a second surface opposite said first surface of said head, and a second plurality of apertures each of which extends from said first surface of said head to said second surface of said head, said second plurality of apertures being spaced apart from one another and arranged in an arcuate arrangement,wherein said cap is rotatable relative to said base between a first position, in which each of said first plurality of apertures of said cap is aligned with a corresponding one of said second plurality of apertures of said base, and a second position, in which one of said first plurality of apertures of said cap is aligned with one of said second plurality of apertures of said base, and the remainder of said first plurality of apertures of said cap is not aligned with any of the remainder of said second plurality of apertures of said base; and
a connecting ring attached to said shank portion of said base, said ring adapted to be secured to a breathing port of the breathing mask.
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Accused Products
Abstract
A breathing mask having a face mask with a breathing port and a variable breathing resistance insert attached to the port. The insert includes an air resistance valve including a cap having a first plurality of apertures arranged in an arcuate arrangement, and a base attached rotatably to the cap and having a second plurality of apertures arranged in an arcuate arrangement. The cap is incrementally rotatable relative to the base between a first position, in which each of the first plurality of apertures of the cap is aligned with a corresponding one of the second plurality of apertures of the base, and a second position, in which one of the first plurality of apertures of the cap is aligned with one of the second plurality of apertures of the base, and the remainder of the first plurality of apertures of the cap is not aligned with any of the remainder of the second plurality of apertures of the base. The insert includes a connecting ring attached to the base and is adapted to be secured to the breathing port of the face mask.
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Citations
20 Claims
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1. A breathing resistance insert for a breathing mask, comprising:
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an air resistance valve including, a cap having a first surface and a second surface opposite said first surface, and a first plurality of apertures each of which extends from said first surface to said second surface, said first plurality of apertures being spaced apart from one another and arranged in an arcuate arrangement, and a base attached rotatably to said cap, said base having a shank portion and a head located at one end of said shank portion, said head having a first surface and a second surface opposite said first surface of said head, and a second plurality of apertures each of which extends from said first surface of said head to said second surface of said head, said second plurality of apertures being spaced apart from one another and arranged in an arcuate arrangement, wherein said cap is rotatable relative to said base between a first position, in which each of said first plurality of apertures of said cap is aligned with a corresponding one of said second plurality of apertures of said base, and a second position, in which one of said first plurality of apertures of said cap is aligned with one of said second plurality of apertures of said base, and the remainder of said first plurality of apertures of said cap is not aligned with any of the remainder of said second plurality of apertures of said base; and a connecting ring attached to said shank portion of said base, said ring adapted to be secured to a breathing port of the breathing mask. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. In combination, a breathing mask having a breathing port;
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a breathing resistance insert having an air resistance valve including, a cap having a first surface and a second surface opposite said first surface, and a first plurality of apertures each of which extends from said first surface to said second surface, said first plurality of apertures being spaced apart from one another and arranged in an arcuate arrangement, and a base attached rotatably to said cap, said base having a shank portion and a head located at one end of said shank portion, said head having a first surface and a second surface opposite said first surface of said head, and a second plurality of apertures each of which extends from said first surface of said head to said second surface of said head, said second plurality of apertures being spaced apart from one another and arranged in an arcuate arrangement, wherein said cap is rotatable relative to said base between a first position, in which each of said first plurality of apertures of said cap is aligned with a corresponding one of said second plurality of apertures of said base, and a second position, in which one of said first plurality of apertures of said cap is aligned with one of said second plurality of apertures of said base, and the remainder of said first plurality of apertures of said cap is not aligned with any of the remainder of said second plurality of apertures of said base; and a connecting ring attached to said shank portion of said base, said ring adapted to be secured to said breathing port of said breathing mask. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification