Regulator second stage for scuba

Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure

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Details

12820128, 12820426, 1375147, 137494, 251251, A62B 902, A62B 704, A61M 1600, F16K 3126

Patent

active

052516180

ABSTRACT:
The regulator second stage for scuba incorporates a pneumatically balanced valve mechanism of high flow capacity which operates without significant influence from friction. The compression spring is suspended between two axially opposed pins to avoid friction producing contact with the housing walls. The valve mechanism is suspended between a dynamic seal and a lever assembly to avoid friction producing contact with the housing walls. The valve controlling lever rotates a ball bearing and collar mechanism in which ball bearings cooperate with notches to provide high mechanical advantage with very low friction. The diaphragm and exhaust valve cooperate to provide stable interaction which conserves breathing gas during all orientations of the regulator second stage.

REFERENCES:
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patent: 3783891 (1974-01-01), Christianson
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patent: 4297998 (1981-11-01), Christianson
patent: 4503852 (1985-03-01), Christianson
patent: 4574797 (1986-03-01), Christianson
patent: 4616645 (1986-10-01), Pederson et al.
patent: 4862884 (1989-09-01), Christianson

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