Second stage scuba diving regulator

Details Second stage scuba diving regulator Second stage scuba diving regulator

1995-08-08

1996-08-27

Funk, Stephen

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820524, 137906, 137908, A62B 704, A61M 1620, F16K 3100

Patent

active

055491073

ABSTRACT:
An improved second stage regulator employs a pneumatically-activated anti-set poppet and inhalation resistance adjustment control knob accessible externally of the regulator. The anti-set poppet utilizes a pressure-activated compression spring to seal the air inlet during exhalation. When the regulator is stored, the relaxed spring permits the seal to withdraw from the sharp edge orifice of the air inlet thereby avoiding seal wear which would otherwise diminish the performance of the regulator. The adjustment control knob permits the diver to modify the required cracking effort by changing the amount of spring compression when the regulator is pressurized.

REFERENCES:
patent: 4094314 (1978-06-01), Le Cornec
patent: 4226257 (1980-10-01), Trinkwalder
patent: 4834086 (1989-05-01), Garofalo
patent: 4949938 (1990-08-01), Ekman
patent: 5190030 (1993-03-01), Semeia
patent: 5222490 (1993-06-01), Pmerantz et al.
patent: 5233976 (1993-08-01), Ferguson
patent: 5251618 (1993-10-01), Christianson
patent: 5271428 (1993-12-01), Dunn et al.

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