Continuous filament apex fittings and methods of manufacture thereof
AssigneeFiber Science, Inc.
InventorEdmond A. Dunahoo
Life of this patent
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Abstract
Continuous filament apex fittings and methods of manufacture thereof to provide high-strength, low-weight fittings for use on cargo lifts and the like, and as replacements for metal clevises. The fittings are made by wet-winding one or more strands of continuous filaments into a loop, forming the loop into a basic clevis-like shape and curing the resin. The use of a flexible resin allows spreading of the clevis eyes for entry and removal of the item to be retained by the clevis without a separate clevis pin. Twisting of the loop one or more times along the major length of the loop prior to bending in the basic clevis shape creates an integrated clevis body having better load distribution across the cross-section thereof. Alternate methods of manufacture are disclosed.
Claims7
An apex fitting comprising an approximately U-shaped structure, the legs of the U-shaped structure each having a loop extending to the end thereof adjacent the loop on the other said leg, the U-shaped structure being comprised of a plurality of turns of continuous multifilament strands, the apex fitting being impregnated with a flexible binder to provide a self supporting structure having elasticity between said legs of said U-shaped structure.
An apex fitting comprising an approximately U-shaped structure, the legs of the U-shaped structure each having a loop extending to the end thereof adjacent the loop on the other said leg, said U-shaped structure being comprised of a plurality of turns of continuous multifilament strands, each of said multifilament strands in the base of said U-shaped structure being twisted along its axis in a first direction, the plurality of strands in the base of said U-shaped structure being twisted in the direction opposite said first direction, said U-shaped structure being impregnated with a flexible binder to provide a self supporting structure.
Dependencies are inferred from the claim text.