Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1992-06-12
1993-11-09
Burr, Edgar S.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820426, 12820024, 137908, 251360, A62B 902
Patent
active
052593746
ABSTRACT:
A control device for an air inlet valve to a second stage regulator for an underwater breathing apparatus which allows a diver, while wearing the apparatus, to adjust the amount of suction pressure required to activate the air inlet to his mouthpiece. The device comprises a small cylindrical structure and a micrometer-type adjustment screw threadedly engageable with an interior wall of the structure. The structure fits on the air inlet to the second stage regulator and is fluidly connected thereto in such a way that any air entering the regulator must pass through a channel formed in the shaft of the screw. The manually adjustable, micrometer-type adjustment screw, when turned, resets biasing means on the normally closed air inlet valve, altering the suction pressure which the user must supply to open the valve. In addition, the air inlet for the control device, when it is fitted to the regulator, is disposed at a 90 degree angle to the air inlet for the regulator alone. This air inlet configuration for the control device and regulator combination allows the supply line thereto to fit more closely about the user's body that the line does when connected to a conventional regulator. This configuration also helps to prevent the line from becoming snarled during a dive.
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Linden Eric C.
Miller Russell L.
Burr Edgar S.
Leon Harry I.
Raciti Eric P.
Steadman Vivian L.
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