Nasal mask
First Claim
Patent Images
1. A mask including:
- a shell; and
a cushion connected with said shell;
said shell having a side wall, said shell having a retaining ring disposed inside said side wall, said side wall and said retaining ring defining a gap between said side wall and said retaining ring, said gap extending around said shell;
said cushion having a side wall with an outer peripheral edge portion including a tongue extending around said cushion;
said tongue of said cushion being received in said gap in said shell to secure said cushion to said shell.
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Accused Products
Abstract
A nasal mask of the type for delivering gas for example to ease or assist the breathing process includes a shell and a cushion connected with the shell. The shell has a side wall and a retaining ring disposed inside the side wall. The side wall and the retaining ring define a gap extending around the shell. The cushion has a side wall with an outer peripheral edge portion including a tongue extending around the cushion. The tongue of the cushion is received in the gap in the shell to secure the cushion to the shell. Various straps assemblies and forehead adjusters for nasal masks are also shown.
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Citations
25 Claims
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1. A mask including:
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a shell; and
a cushion connected with said shell;
said shell having a side wall, said shell having a retaining ring disposed inside said side wall, said side wall and said retaining ring defining a gap between said side wall and said retaining ring, said gap extending around said shell;
said cushion having a side wall with an outer peripheral edge portion including a tongue extending around said cushion;
said tongue of said cushion being received in said gap in said shell to secure said cushion to said shell. - View Dependent Claims (2, 3)
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4. A nasal mask including:
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a shell; and
a cushion connected with said shell for engagement with the face of a user;
said cushion having a side wall, an inner wall extending transverse to said side wall, and an outer wall extending transverse to said side wall, said outer wall being adapted to engage and seal against a face of a user of the mask;
said outer wall of said cushion extending substantially completely around said cushion;
said inner wall of said cushion being discontinuous in a nasal bridge region of said cushion. - View Dependent Claims (5)
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6. A mask comprising:
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a shell;
a cushion connected with said shell for engagement with the face of a user; and
a strap connectable with said shell for helping to hold said nask on the face of a user;
said shell having a shell connector including a first opening and a first tab;
said strap including a strap connector including a second opening and a second tab, said second tab being resiliently deflectable;
said strap connector being engageable with said shell connector by insertion of said first tab of said shell connector into said opening of said strap connector and deflection of said second tab of said strap connector to move said second tab to an interlocking position extending into said opening in said shell connector. - View Dependent Claims (7, 8)
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9. A mask comprising:
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a shell;
a forehead strap assembly for connection with said shell for helping to hold said shell on a user'"'"'s head, said forehead strap assembly comprising a pin; and
a forehead adjuster connected between said shell and said forehead strap, said forehead adjuster comprising a hook engageable with said pin in a snap fit connection for connecting said forehead adjuster with said forehead strap assembly. - View Dependent Claims (10, 11)
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12. A mask comprising:
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a shell;
a forehead strap assembly for connection with said shell for helping to hold said shell on a user'"'"'s head; and
a generally T-shaped forehead adjuster having two arms connected between said shell and said forehead strap assembly, each one of said arms having respective inner and outer slots for receiving straps of said forehead strap assembly;
each one of said arms of said forehead adjuster having at least one spacer located between said inner and outer slots of said arm and extending in a direction of the user'"'"'s forehead when said mask is in use to maintain said arm spaced apart from the user'"'"'s forehead. - View Dependent Claims (13, 14)
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15. A mask comprising:
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a shell;
a forehead strap assembly for connection with said shell for helping to hold said shell on a user'"'"'s head; and
a forehead adjuster connected between said shell and said forehead strap;
said forehead strap assembly including first and second strap portions connected with and extending from opposite sides of said forehead adjuster;
said forehead strap assembly further including a cushioning strap extending between said first and second forehead strap portions, said cushioning strap being located between said forehead adjuster and the user'"'"'s forehead. - View Dependent Claims (16, 17)
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18. A mask comprising:
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a shell;
a forehead strap assembly for connection with said shell for helping to hold said shell on a user'"'"'s head; and
a forehead adjuster connected between said shell and said forehead strap;
said forehead adjuster being supported on said shell for arcuate sliding movement relative to said shell about an axis that is spaced apart from said shell. - View Dependent Claims (19, 20, 21, 22)
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23. A mask including:
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a shell; and
a cushion connected with said shell;
said shell having a wall defining a gas inlet aperture, said shell having an exhalation portion disposed below said gas inlet aperture, said exhalation portion comprising a plurality of circular openings extending through said side wall of said shell. - View Dependent Claims (24, 25)
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Specification