1978-10-06
1979-09-11
Skogquist, Harland S.
G09B 2332
Patent
active
041670701
ABSTRACT:
In a preferred embodiment, there is provided a substantially rigid and self-supporting housing divided into two separate chambers and chamber spaces thereof each having mounted therein a separate lung-simulating flexible non-resilient enclosure structure and enclosure space thereof isolated from fluid flow communication with the chamber spaces, with the respective enclosure spaces being in flow communication with each other through an interconnecting conduit having mounted within conduit space a tube having an inflatable balloon mounted therearound adapted for inflation and deflation from an exterior location exterior to the interconnecting conduit, and each of the chamber spaces having a bellows mounted in flow communication with chamber space thereof with the bellows mounted above the flexible non-resilient enclosure structure within that chamber space, and a portion of each wall of the respective two separate chambers being flexible and in flow contact with exterior bellow and space thereof adapted to jointly increase pressure against the flexible portion of each of the separate chamber spaces concurrently by collapse of the exterior bellows and to jointly decrease pressure by expansion of the exterior bellows, and including on each flexible non-resilient enclosure structure on non-opposing walls thereof a multiplicity of mass elements positioned and adapted to exert pressure by gravitational force upon enclosure space as the flexible non-resilient enclosure structure is positioned in different positions.
REFERENCES:
patent: RE29317 (1977-07-01), Mosley
patent: 3049811 (1962-08-01), Ruben
patent: 3154881 (1964-11-01), Elwell
patent: 3250022 (1966-05-01), Midgley
patent: 3273261 (1966-09-01), Lovercheck
patent: 3274705 (1966-09-01), Breakspear
patent: 3276147 (1966-10-01), Padellford
patent: 3374554 (1968-03-01), De Bella
patent: 4001950 (1977-01-01), Blumensaadt
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