Mask, mask shell and seal with improved mounting, mask seal, method of mask manufacture and mask with reduced exhalation noise
First Claim
1. Mask, comprising,a generally triangular shell including an apex portion and triangular walls providing an interior and including a shell outer peripheral portion, said apex portion provided with a circular opening circumscribed by an outwardly extending hollow cylindrical member for supplying gas to said mask, said shell outer peripheral portion provided with first mounting means;
- a seal including a seal outer peripheral portion;
second mounting means embedded wholly within said seal outer peripheral portion except for a portion providing access to said first mounting means and for engaging said first mounting means to mount seal to said shell;
one of said walls for being disposed beneath a person'"'"'s nose and wherein said one wall is provided with a plurality of vent holes extending upwardly from said interior and angularly outwardly through said one wall;
a malleable member mounted in said shell outer peripheral portion and for being deformed to deform said shell and thereby said seal to fit said seal to portions of a person'"'"'s face;
a plurality of adjustable headstraps for surrounding and being attached to a person'"'"'s head; and
a headstrap retention bracket mounted to said plurality of headstraps and provided with an inwardly extending generally semi-circular indentation generally complementary in shape to said cylindrical member and for permitting said headstrap retention bracket to wedgedly engage said cylindrical member to mount said shell and said seal removably to said plurality of headstraps.
1 Assignment
0 Petitions
Accused Products
Abstract
Mask seal having an embedded mounting member for engaging a mounting member on a mask shell to mount the seal and shell together. Headstrap retention bracket having an indentation for wedgedly engaging a mask shell cylinder to removably mount headstraps to the shell, the indentation circumscribed by an outward wall. Triangular mask seal of styrene-ethylene butylene-styrene copolymer modified with mineral oil.
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Citations
17 Claims
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1. Mask, comprising,
a generally triangular shell including an apex portion and triangular walls providing an interior and including a shell outer peripheral portion, said apex portion provided with a circular opening circumscribed by an outwardly extending hollow cylindrical member for supplying gas to said mask, said shell outer peripheral portion provided with first mounting means; -
a seal including a seal outer peripheral portion; second mounting means embedded wholly within said seal outer peripheral portion except for a portion providing access to said first mounting means and for engaging said first mounting means to mount seal to said shell; one of said walls for being disposed beneath a person'"'"'s nose and wherein said one wall is provided with a plurality of vent holes extending upwardly from said interior and angularly outwardly through said one wall; a malleable member mounted in said shell outer peripheral portion and for being deformed to deform said shell and thereby said seal to fit said seal to portions of a person'"'"'s face; a plurality of adjustable headstraps for surrounding and being attached to a person'"'"'s head; and a headstrap retention bracket mounted to said plurality of headstraps and provided with an inwardly extending generally semi-circular indentation generally complementary in shape to said cylindrical member and for permitting said headstrap retention bracket to wedgedly engage said cylindrical member to mount said shell and said seal removably to said plurality of headstraps. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A mask, comprising:
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a shell and a seal mounted to said shell, said shell provided with an outwardly extending hollow cylinder for supplying gas and in fluid communication with said shell; a plurality of headstraps; a headstrap retention bracket mounted to said headstraps and provided with a generally semi-circular indentation permitting said, bracket to wedgedly engage said cylinder and mount said shell and said seal removably to said plurality of headstraps; said cylindrical member provided with an outwardly extending radial ridge; said generally semi-circular indentation is provided generally centrally with an outwardly extending radial indentation; said generally semi-circular indentation and said outwardly extending radial indentation circumscribed by an outwardly extending generally semi-circular member including a portion providing an outwardly radial extending recess; and said generally semi-circular member for wedgedly engaging portions of said cylindrical member with said radial recess receiving said radial ridge to orient said headstraps with respect to said shell and to said seal and to mount said shell and said seal removably to said plurality of headstraps.
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Specification