Regulator second stage for scuba

Details Regulator second stage for scuba Regulator second stage for scuba

1987-09-30

1989-09-05

Chambers, A. Michael

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

251254, B63C 1122

Patent

active

048628840

ABSTRACT:
The regulator second stage for scuba incorporates a semi-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:
patent: 1722401 (1929-07-01), Todd
patent: 2201095 (1940-05-01), Kaufman
patent: 2642256 (1953-06-01), Stebling
patent: 4029120 (1977-06-01), Christianson
patent: 4147176 (1979-03-01), Christianson
patent: 4168721 (1979-09-01), Mueller Jr.
patent: 4226257 (1980-10-01), Trimbwalder

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