Fluid handling – Self-proportioning or correlating systems – Mixture condition maintaining or sensing
Patent
1989-01-11
1991-02-12
Hepperle, Stephen M.
Fluid handling
Self-proportioning or correlating systems
Mixture condition maintaining or sensing
12820325, 12820511, G05D 1113
Patent
active
049916165
ABSTRACT:
The invention relates to an installation for the supply of oxygen in hospitals and the like, formed by a conventional oxygen station and an oxygen generating unit by filtering, a mixing frame, a middle mixture deposit and an emergency frame which allows the substitution of the connection to the middle mixture deposit through connection to an emergency set being established as from these means. The mixing frame in turn incorporates two oxygen analyzers, two pressure controllers, two sensors for the concentration of oxygen, two electrovalves, two control valves activated by a single controller, two channel transducers, two single way valves, two pressure sensors and a small mixture valve.
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patent: 3526239 (1970-09-01), Oroza
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patent: 4072148 (1978-02-01), Munson et al.
patent: 4364493 (1982-12-01), Raynes et al.
patent: 4428372 (1984-01-01), Beysel et al.
patent: 4627860 (1986-12-01), Rowland
patent: 4651728 (1987-03-01), Gupta et al.
Desarrollos, Estudios Y Patentes, S.A.
Hepperle Stephen M.
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