Lubricated plastic impregnated aramid fiber rope
AssigneeAMSTED Industries Incorporated
InventorsNeville H. Simpson, Fred E. Dykeman
Life of this patent
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Abstract
An aramid fiber rope having a central core surrounded with aramid fiber rope strands. The core and the aramid strands are coated with a heavy viscous lubricant prior to winding the strands into rope. The lubricated rope is then impregnated and surrounded with a plastic material to entrap the lubricant in the core and the strands.
Claims2
A rope comprising a central core, said central core being comprised of a plurality of aramid fiber strands laid around a central core strand, said strands being lubricated with a heavy, viscous lubricant, a plurality of aramid fiber outer strands laid around said central core, said strands being equally spaced from each other and lubricated with a heavy, viscous lubricant,
- and a flexible thermoplastic material filling the space between said central core and said outer strands and between adjacent outer strands to retain the lubricant in said strands and to keep said outer strands in a fixed position relative to each other,
- said thermoplastic material extending outwardly to the outer periphery of said outer strands.
A method of producing an aramid fiber rope comprising the steps of:
- winding aramid yarn into strands, coating said strands with a heavy, viscous lubricant and winding a plurality of said strands around a central core strand to form a central core,
- providing a plurality of aramid fiber rope strands and coating said strands with a heavy, viscous lubricant, and winding said strands so that said strands are equally spaced around said central core to form a multi-strand rope comprising a central core and outer strands, and impregnating the rope with a thermoplastic material such that the thermoplastic material fills the spaces between said central core and said outer strands and between adjacent outer strands to retain the lubricant in the strands and to keep said outer strands in a fixed position relative to each other, said thermoplastic material extending outwardly to the outer periphery of said outer rope strands.
Dependencies are inferred from the claim text.