Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Laminated – embedded member or encased material
Patent
1993-12-08
1994-09-20
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Laminated, embedded member or encased material
416236R, F04D 2938
Patent
active
053484452
ABSTRACT:
A fan blade for a ceiling fan is formed as an elongated laminated plate body which includes several layers of thin wooden plates that are bonded together. The laminated plate body has a top face which is formed with projecting strips and a bottom face which is formed with recessed strips that correspond to the projecting strips.
REFERENCES:
patent: D110876 (1938-08-01), Preston
patent: 1806539 (1931-05-01), Cram
patent: 2912159 (1959-11-01), Ganger et al.
patent: 3033049 (1962-05-01), Morrow
patent: 4653985 (1987-03-01), Rotherham
patent: 5244349 (1993-09-01), Wang
Hung Cheng-Chi
Larson James A.
Look Edward K.
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