Patents Assigned to Survivair Respirators, LLC
  • Demand regulator protective bellows
    Patent number: 7331345
    Abstract: A self contained breathing apparatus (SCBA) served by a source of breathing gas with a mask and a demand regulator connected to the mask. The regulator has a flexible diaphragmatic member having a side exposed to pressure differentials to cause a valve mechanism to introduce breathing gas to the mask. An expanding and contracting member and a chamber fluidically connected to the diaphragm compensates for movement of the diaphragm while shielding the diaphragm from ambient contaminants.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: February 19, 2008
    Assignee: Survivair Respirators, LLC
    Inventor: David V. Haston