×

Deep submergence respirator outfit

  • US 4,776,332 A
  • Filed: 07/16/1987
  • Issued: 10/11/1988
  • Est. Priority Date: 07/24/1986
  • Status: Expired due to Fees
First Claim
Patent Images

1. A deep submergence respirator system comprising:

  • a respiratory mask in communication with a gas supply line and a gas discharge line,a first compressible buffer container in communication with the gas supply line,a second compressible buffer container in communication with the gas discharge line,a first valve in communication with the gas supply line for maintaining the pressure inside the first buffer container at a level above the pressure outside the first buffer container,a second valve in communication with the gas discharge line for maintaining the pressure inside the second buffer container at a level below the pressure outside the second buffer container, thereby establishing a difference in internal pressure between the first and second buffer containers,a relief pressure valve provided between the first buffer container and the second buffer container,means for opening the relief pressure valve when the pressure in the respiratory mask is higher than the difference in internal pressure between the first and second buffer containers,whereby gas is supplied through the gas supply line to the respiratory mask upon inhalation and gas is discharge from the respiratory mask through the gas discharge line upon exhalation.

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