Fluid handling – Systems – With selective motion for plural valve actuator
Patent
1980-03-27
1982-01-26
Nilson, Robert G.
Fluid handling
Systems
With selective motion for plural valve actuator
74 96, 74436, 137595, 137601, 137865, 165103, 251249, F16K 1118
Patent
active
043123813
ABSTRACT:
A control device for a triple-plenum air conditioning apparatus having a by-pass air duct, a hot air duct and a cold air duct. A first shaft mounted through the by-pass and hot air ducts carries a first by-pass air damper blade and a hot air damper blade at right angles to each other. A second shaft mounted through the by-pass air duct and the cold air duct carries a second by-pass damper blade and a cold air damper blade at right angles to each other. The control device includes a first geneva link on the first shaft, a second geneva link on the second shaft and a third shaft carrying a drive plate with pins for independently actuating the geneva links and a geneva cam for holding one of the geneva links against rotation while the other is being independently actuated. Rotation of the third shaft through one hundred degrees results in rotation of each of the first and second shafts through ninety degrees.
REFERENCES:
patent: 3066208 (1962-11-01), Fannon
patent: 3207111 (1965-09-01), Giliberty
patent: 3361005 (1968-01-01), Carpenter
patent: 3421380 (1969-01-01), Mansour
patent: 3508604 (1970-04-01), Foust
patent: 3523460 (1970-08-01), Beauvais
patent: 3635245 (1972-01-01), Canfield
patent: 3847210 (1974-11-01), Wells
patent: 3855873 (1974-12-01), Fletcher
patent: 3911953 (1975-10-01), Crombie
patent: 4164976 (1979-08-01), Timmerman
Aladdin Heating Corporation
Nilson Robert G.
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