Title: Positive end expiratory pressure device

Abstract: A diaphragm divides a chamber into two segments, the first of which includes an air input port and an outlet port formed by a tube which contacts the diaphragm. On the other side of the diaphragm, a variably adjustable spring actuated piston urges the diaphragm to closure against the outlet port. Incoming air pressure deflects the diaphragm away from the outlet port against the spring and air compression, to allow predetermined exhaust air flow. A valved opening behind the diaphragm provides safety against diaphragm tear and malfunction.

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Inventors: Boehringer, John R. (Wynnewood, PA, US)

Application Number: 647340
Filing Date: 1976-01-08
Publication_date: 1980-01-08
Assignee:
Primary Class(es): 137/510 128/205.24, 137/514, 137/514.5
Other Classes:
US Patent Ref:

1616032	Feb, 1927	Duffy	137/510.
1871535	Aug, 1932	Lattner	137/510.
2639194	May, 1953	Wahlin	137/510.
2888947	Jun, 1959	Montgomery	137/510.
2918082	Dec, 1959	Pinke	137/510.
3043333	Jul, 1962	Kugler	137/510.
3294114	Dec, 1966	Birkemeier	137/510.
3419039	Dec, 1968	Monnich	137/510.
3474816	Oct, 1969	Burgess	137/510.
3550617	Dec, 1970	Johnson	137/514.

Other Refs: 1208796

Oct, 1970	GB

Primary Examiner: Weakley, Harold W.
Assistant Examiner:
Attorney: Paul & Paul