MAINTENANCE-FREE RESPIRATOR THAT HAS CONCAVE PORTIONS ON OPPOSING SIDES OF MASK TOP SECTION

  • US 20080271739A1
  • Filed: 05/03/2007
  • Published: 11/06/2008
  • Est. Priority Date: 05/03/2007
  • Status: Abandoned Application
First Claim
Patent Images

1. A maintenance-free respirator that comprises:

  • (a) a mask harness; and

    (b) a mask body that includes at least one layer of filter media, the mask body having a perimeter that includes an upper segment that comprises first and second concave segments that are located, respectively, on first and second sides of a central plane when viewing the mask body from a top view.

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