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US 4,392,324 AGranted
Mouth operable mask device
AssigneeMinkey Farms Partnership
InventorsJeff Harris, Charles A. Chambers, Jack M. Horwitz
Life of this patent
Estimating the term…
Abstract
A face mask having an upper mask portion and a lower mask portion, each of which portions are connected respectively to two legs of a V-shaped element on which is inserted into the mouth of the mask wearer. A tooth grip provided on the V-shaped element allows the mask wearer to hold the mask firmly. Flexing of the V-shaped element at its hinge produces relative motion between the upper and lower mask portions. A metal element is attached to one leg of the V-shaped element for generating a clicking sound when the V-shaped element is flexed.
Claims1
A mouth operable mask comprising:
- a flexible V-shaped element capable of being inserted into the wearer's mouth;
- at least one brace, attached to one of the legs of said V-shaped element, which may be gripped by the wearer's teeth;
- an upper mask portion attached to one of the legs of said V-shaped element and a lower mask portion attached to the other of the legs of said V-shaped element, whereby flexing of said V-shaped element produces relative motion between said upper and lower mask portions;
- wherein said V-shaped element includes a flexible hinge composed of resilient plastic whereby the resiliency of said hinge biases said V-shaped element in an open position;
- and
- a metal element attached to the interior side of one of said legs of said V-shaped element and being in contact with the interior side of said other of said legs, wherein said metal element generates a clicking noise when said V-shaped element is flexed.
3 more elements
Dependencies are inferred from the claim text.