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US 8,136,523 B2Granted
Ventilation mask with continuous seal connected by resilient cushion
AssigneeHans Rudolph, Inc.
InventorKevin A. Rudolph
Life of this patent
Estimating the term…
Abstract
A respiratory mask comprises a sealing flange connected to a mask body by a sinusoidal shaped cushioning member. The cushioning member resiliently compresses when the sealing flange is pressed against the face of a wearer to ensure an airtight seal between the sealing flange and the face of the wearer. The cushioning member functions as a spring, compressing to allow the sealing member to better conform to the face of the wearer but resiliently urging the sealing flange outward against the face of the wearer to prevent leaks.
Claims12
A respiratory mask comprising:
- a mask body defining a mask chamber for receiving the nose and mouth of the wearer;
- a resilient cushion connected to and extending from said mask body;
- said cushion including a first arcuate section curving from a periphery of said mask body inward toward a center of said mask chamber and a second arcuate section curving from and in an opposite direction relative to said first arcuate section and away from said mask chamber to form an s-shaped spring wherein said second arcuate section is compressible toward said first arcuate section;
- an inwardly projecting sealing flange connected to and extending inward relative to a distal end of said cushion and adapted to engage a face of the wearer inward from said distal end of said cushion.
1 more element
Dependencies are inferred from the claim text.