F - Mech Eng,Light,Heat,Weapons – 28 – F
Patent
F - Mech Eng,Light,Heat,Weapons
28
F
230/20, 257/21.1
F28F 5/04 (2006.01)
Patent
CA 1320483
ABSTRACT OF THE DISCLOSURE A heat exchanger fan having a hollow central shaft. Hollow blades are formed on the central shaft and a peripheral flange is attached to the distal ends of the hollow blades. The interior of the shaft communicates with the interior of the blades, and openings at the distal ends of the blades extend through the peripheral flange.
598004
Anderson Ray L.
Fetherstonhaugh & Co.
LandOfFree
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