Patent ID: 6513526
Filing Date: 2003-02-04
Classification: A61B,A61M

Abstract:
A full-face mask cushion to sealingly connect a mask to a wearer's face, the cushion comprising:a nasal bridge region, a cheek region and a chin region; a first membrane comprising a substantially triangularly-shaped frame of resilient material having a first molded inwardly curved rim; a second membrane of resilient material, said second membrane being thinner than said first membrane, said second membrane having a second molded inwardly curved rim, said second membrane curved rim spaced a first distance from said first membrane curved rim in said cheek region and said second membrane curved rim spaced a second distance from said first membrane curved rim in said nasal bridge region, said second distance greater than said first distance, said distances measured when the mask is not in use, a portion of said second membrane curved rim forming a face contacting seal.