Fluid reaction surfaces (i.e. – impellers) – Protective screen or guard – Water or marine propellers
Patent
1998-03-27
2000-06-06
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
Protective screen or guard
Water or marine propellers
4151212, F01D 2500
Patent
active
060710799
ABSTRACT:
A high velocity fan for supplying forced air where the fan has a front grill with its air delivery area having aerodynamically formed spaced radial ribs that increase the velocity of the delivered air over the conventional round wire rib grill.
REFERENCES:
patent: 2950859 (1960-08-01), Kirk
patent: 5259726 (1993-11-01), Bacria
Lasko Holdings, Inc. USA
Look Edward K.
McDowell Liam
Wobensmith, III Zachary T.
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