B - Operations – Transporting – 03 – D
Patent
B - Operations, Transporting
03
D
361/31
B03D 1/16 (2006.01)
Patent
CA 1119735
ABSTRACT OF THE DISCLOSURE Disclosed is an impeller comprised of a hub and circumferentially spaced vanes extending radially therefrom, the impeller being located at the bottom end of an impeller drive shaft elongated to extend above a liquid into which the impeller is immersible for rotation within a closely surrounding ring of stator wings; said shaft being hollow for connection to an external supply of air which is dischargeable into the liquid from a chamber at the bottom end of the shaft through conduits extending therefrom to the periphery of the impeller but between the vanes; said conduits being disposed, preferably, tangentially to the shaft axis and said impeller vanes being preferably, of rubber and tapering, preferably, towards the bottom of the impeller and being also thinner at their lower ends. 1342 P/2 CA
322604
Arthurs & Garrett
Trondhjems Mek. Verksted A/s
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