Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1993-03-23
1995-05-09
Asher, Kimberly L.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820128, 137375, 13750542, 251357, 251358, A62B 902, A62B 1802, F16L 700, F16K 3112
Patent
active
054130964
ABSTRACT:
The invention disclosed herein comprises a self-contained breathing apparatus regulator having a valve seat for overlying the crown of an orifice wherein high pressure gas is regulated by said valve seat into said orifice. The valve seat has a valve seat body of an inverted T shaped configuration. The upright portion of the T shaped configuration is seated within a spring block assembly having a seal around said upright portion. A continuous plastic coating is provided around the valve seat body into the zone of said orifice and beyond the zone of said seal so as to expose the junction only to intermediate pressure to prevent delamination of the plastic from the valve seat body.
REFERENCES:
patent: 3318567 (1967-05-01), Gifford
patent: 3495607 (1970-02-01), Shugarman
patent: 3537683 (1970-11-01), Snell, Jr.
patent: 3738383 (1973-06-01), David
patent: 3904173 (1975-09-01), Taylor
patent: 3958595 (1976-05-01), Al et al.
patent: 3990675 (1976-11-01), Bonafous
patent: 4237917 (1980-12-01), Merrifield
Asher Kimberly L.
Bethel George F.
Bethel Patience K.
U. S. Divers Co., Inc.
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