Breathable gas delivery regulators

Details Breathable gas delivery regulators Breathable gas delivery regulators

1978-09-25

1980-12-23

Haroian, Harry N.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820426, A61M 1600

Patent

active

042404193

ABSTRACT:
The invention provides a breathable gas regulator of the demand type for use with a low supply pressure (10 p.s.i or less) gas source.
The regulator requires no greater demand effort on the part of a user than is required with present-day regulators of the same type which operate with much higher pressure (70 p.s.i. and above) gas sources, and it requires ducts, diaphragms and valves of no greater size than are required by present-day regulators. This is achieved by inclusion of a servo valve that is actuated by a fluidic amplifier arrangement responsive to the user's breathing pressure.
In an embodiment of the invention particularly suited for use by an aviator, the regulator includes a pneumatically operated mixing valve arrangement for automatically varying, according to altitude, the proportions of, say, oxygen and air supplied to the demand valve of the regulator, and the mixing valve arrangement includes a fluidic gas concentration sensor.

REFERENCES:
patent: 3368555 (1968-02-01), Beasley
patent: 3875957 (1975-04-01), Veit
patent: 4057059 (1977-11-01), Reid et al.
patent: 4072148 (1978-02-01), Munson et al.
patent: 4141356 (1979-02-01), Smargiassi
patent: 4148311 (1979-04-01), London

Affiliated with

Also associated with

Rating

Breathable gas delivery regulators does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Breathable gas delivery regulators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Breathable gas delivery regulators will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2237293