Second stage demand breathing regulator

Details Second stage demand breathing regulator Second stage demand breathing regulator

1993-03-01

1994-09-06

Burr, Edgar S.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820524, A61M 1600

Patent

active

053438582

ABSTRACT:
A second stage demand regulator is disclosed which has a regulator body with a spring loaded poppet valve mounted therein. A diaphragm mounted in said regulator body responds to pressure differentials to provide demand breathing gas to a user in communication with the regulator. The demand valving function is provided by the spring loaded poppet having a lever in contact with the poppet and the diaphragm. Upon acutation of the diaphragm, a greater mechanical advantage is initially provided to the lever through a point of contact with an operating surface that is closer to the axis of rotation than a second point of contact.

REFERENCES:
patent: 3467137 (1969-09-01), Brown
patent: 3633611 (1972-01-01), MacNiel
patent: 4140113 (1979-02-01), Pedersen
patent: 4214580 (1980-07-01), Pedersen
patent: 4446859 (1984-05-01), Pedersen
patent: 4683881 (1987-08-01), Hansen et al.

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