Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Laminated – embedded member or encased material
Patent
1992-05-26
1993-05-25
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Laminated, embedded member or encased material
416232, F04D 2938
Patent
active
052134768
ABSTRACT:
A molded hollow fan blade in which a preform (preferably constructed of glass fibers) is used to support the upper multiple layers of to-be-impregnated cloth within a mold. As resin is injected into the mold, the cloth and the preform become impregnated (this resin dissolving the temporary resin binder holding the preform together) thereby bonding the two together to form a single unit during the molding operation.
REFERENCES:
patent: 2945262 (1960-07-01), Petty
patent: 3902944 (1975-09-01), Ashton et al.
patent: 3967996 (1976-07-01), Kamov et al.
patent: 4169749 (1979-10-01), Clark
patent: 4268571 (1981-05-01), McCarthy
Edwards Robert J.
Hoelter Michael L.
Hudson Products Corporation
Larson James A.
Look Edward K.
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