Fluid handling – Systems – Closed circulating system
Patent
1978-11-13
1981-02-17
Nilson, Robert G.
Fluid handling
Systems
Closed circulating system
34191, 137601, F26B 2104
Patent
active
042509173
ABSTRACT:
An air flow reverser apparatus for use in association with an air flow system having air supply and return port means, said apparatus comprising a main supply duct, and a main return duct, said ducts being connectable to said respective supply and return port means of said air flow system, at least two branch supply ducts communicating with said main supply duct, at least two branch return ducts communicating with said main return duct, supply damper means for selectively shutting off at least one of said branch supply ducts, while leaving at least one said branch supply duct open, return damper means for selectively shutting off at least one of said branch return ducts while leaving at least one said branch return duct open, and means interconnecting said supply and return damper means whereby when a selected one of said branch supply ducts is closed, a selected one of said branch return ducts is open, and power operated means for moving the same from one position to another simultaneously.
REFERENCES:
patent: 1848811 (1932-03-01), Welch
patent: 2078515 (1937-04-01), Sutherland
patent: 2311824 (1943-02-01), Gautreau
patent: 2347601 (1944-04-01), Jackson
patent: 2370886 (1945-03-01), Solberg
Bergner Hans L.
Buller-Colthurst Guy E.
Jespersen Knud
Frank William F.
Knud Simonsen Industries Limited
Nilson Robert G.
Rolston George A.
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