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Respiratory mask having a soft, compliant facepiece and a thin, rigid insert and method of making

  • US 5,062,421 A
  • Filed: 02/19/1991
  • Issued: 11/05/1991
  • Est. Priority Date: 11/16/1987
  • Status: Expired due to Term
First Claim
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1. A structural member for use in a facepiece of a respiratory mask, said structural member being thin and rigid relative to the facepiece and having a pair of substantially flat, swept back cheek portions, each formed with an aperture and structure around the aperture to mate with and hold a filter cartridge, and a central portion having a nose aperture for an exhalation valve, and provided with discontinuities permitting the facepiece material to flow through the discontinuities under molding conditions to form a mechanical seal to the structural member.

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