Patents Assigned to Cis-Lunar Development Laboratories
  • Breathing apparatus mouthpiece
    Patent number: 5368018
    Abstract: A breathing apparatus mouthpiece which is reversibly switchable between an open circuit and a closed circuit system by rotating a special valve in the mouthpiece. The breathing apparatus mouthpiece is compact, lightweight, easy to operate and has low breathing resistance.
    Type: Grant
    Filed: March 23, 1992
    Date of Patent: November 29, 1994
    Assignee: Cis-Lunar Development Laboratories, Inc.
    Inventor: William C. Stone
  • Breathing apparatus mouthpiece
    Patent number: 5127398
    Abstract: A breathing apparatus mouthpiece which is reversibly switchable between an open circuit and a closed circuit system by rotating a special valve in the mouthpiece. The breathing apparatus mouthpiece is compact, lightweight, easy to operate and has low breathing resistance.
    Type: Grant
    Filed: April 19, 1989
    Date of Patent: July 7, 1992
    Assignee: Cis-Lunar Development Laboratories, Inc.
    Inventor: William C. Stone
  • Breathing apparatus gas-routing manifold
    Patent number: 4974585
    Abstract: An integrated, improved, fully redundant mixed gas breathing apparatus gas routing manifold permits inhalation and exhalation lines from both mouthpieces of a closed circuit breathing system and an automatic gas addition system to be cross routed to the opposite system's CO.sub.2 removing and gas control system.
    Type: Grant
    Filed: April 19, 1989
    Date of Patent: December 4, 1990
    Assignee: Cis-Lunar Development Laboratories
    Inventor: William C. Stone