×

Respirators

  • US 20080035149A1
  • Filed: 03/17/2005
  • Published: 02/14/2008
  • Est. Priority Date: 03/19/2004
  • Status: Abandoned Application
First Claim
Patent Images

1. An exhalation valve assembly for fitting in the exhalation path of a respirator, said valve assembly comprising first and second valves spaced apart in the exhalation path such as to define between them a dead space operable to retain a portion of the exhaled air.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×