Webbing for fall protection device
AssigneeOTEX Specialty Narrow Fabrics, Inc.
InventorsMark M. Morgis, Kevin W. Raup
Life of this patent
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Abstract
A webbing for use in a fall protection device, such as a self-retracting lifeline having leading edge capabilities, is provided having a double cloth construction with the exterior of the webbing constructed of woven, ultra-high molecular weight polyethylene yarns and having stuffer yarns positioned in the interior of the fabric, wherein the stuffer yarns are made of high-tenacity fibers, such as aramid fibers.
Claims20
A self-retracting lifeline having leading edge capabilities, the self-retracting lifeline comprising:
- a webbing comprising:
- (a) a double cloth construction having (i) a first side having a plurality of warp yarns and weft yarns woven together, wherein the warp yarns are multifilament yarns comprised of ultra-high molecular weight polyethylene fibers;
- (ii) a second side having a plurality of warp yarns and weft yarns woven together, wherein the warp yarns are multifilament yarns comprised of ultra-high molecular weight polyethylene fibers;
- and (iii) a plurality of binder yarns extending between the first side and second side, whereby the binder yarns joins the first and second side together, wherein the first side of the double cloth has a face and the warp yarns of first side are predominantly exposed on the face relative to the weft yarns, and wherein the second side of the double cloth has a face and the warp yarns of the second side are predominantly exposed on the face relative to the weft yarns;
- and
- (b) a plurality of stuffer yarns positioned between the first side and second side of the double cloth and extending in the warp direction, wherein the stuffer yarns are cords consisting of para-aramid fibers having a tensile strength of 2.0 GPa or greater, wherein multiple stuffer yarns are formed into plied yarns, and multiple plied yarns are twisted together to form the cords;
- wherein the self-retracting lifeline meets or exceeds ANSI Standard Z359.14.
A self-retracting lifeline having leading edge capabilities, the self-retracting lifeline comprising:
- a webbing comprising:
- (a) a double cloth construction having (i) a first side having a plurality of warp yarns and weft yarns woven together, wherein the warp yarns are multifilament yarns comprised of ultra-high molecular weight polyethylene fibers;
- (ii) a second side having a plurality of warp yarns and weft yarns woven together, wherein the warp yarns are multifilament yarns comprised of ultra-high molecular weight polyethylene fibers;
- and (iii) a plurality of binder yarns extending between the first side and second side, whereby the binder yarns joins the first and second side together;
- and
- (b) a plurality of stuffer yarns positioned between the first side and second side of the double cloth and extending in the warp direction, wherein the stuffer yarns are cords consisting of para-aramid fibers having a tensile strength of 2.0 GPa or greater, wherein multiple stuffer yarns are formed into plied yarns, and multiple plied yarns are twisted together to form the cords;
- wherein the self-retracting lifeline meets or exceeds ANSI Standard Z359.14.
Dependencies are inferred from the claim text.