Synthetic lifting slings and related methods
AssigneeStren-Flex, LLC
InventorsRoderick G. Rossborough, III, Trevor J. Waycott
Life of this patent
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Abstract
Lifting slings for use in rigging projects to aid in the lifting of heavy objects and related methods are provided herein. A lifting sling can include an inner core comprising continuous synthetic filaments that form one or more load-bearing endless loops. The lifting sling can also include a tubular outer cover loosely surrounding the inner core so that the filaments of the core are movable relative to each other and to the outer cover.
Claims33
A lifting sling comprising:
- an inner core comprising continuous synthetic filaments that form one or more load-bearing endless loops;
- and
- a tubular outer cover loosely surrounding the inner core so that the filaments of the inner core are movable relative to each other and to the outer cover, the outer cover comprising a woven fabric and the woven fabric being treated with nanoparticles to make the outer cover liquid and moisture repellent to protect the inner core from damage.
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A lifting sling comprising:
- an inner core comprising continuous synthetic filaments that form one or more load-bearing endless loops;
- and
- a tubular outer cover loosely surrounding the inner core so that the filaments of the inner core are movable relative to each other and to the outer cover, the outer cover comprising a tubular woven fabric comprising texturized 1500/1 polyester yarns having an increased volume due to texturization, wherein the tubular weave pattern of the woven fabric comprises a tubular weave with face twill of 3 up-1 down-1 up-1 down that provides increased abrasion resistance.
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A method of making a lifting sling, the method comprising:
- providing a tubular woven fabric having an outer surface and an interior tubular channel, the tubular woven fabric being treated with nanoparticles to make the outer surface of the tubular woven fabric liquid and moisture repellent;
- cutting the tubular woven fabric to form an outer cover for a lifting sling such that the outer cover has a length, an interior channel and a first end and a second end;
- inserting continuous synthetic filaments into the interior channel of the outer cover to form an inner core of one or more load-bearing endless loops;
- inserting the first end of the outer cover into the interior channel at the second end of outer cover to form an overlap of the woven tubular fabric on the outer cover such that the outer cover loosely surrounds the inner core so that the continuous synthetic filaments of the inner core are movable relative to each other and to the outer cover;
- secures the second end of the outer cover to the first end of the outer cover at a point along the overlap in manner that does not damage the continuous synthetic filaments of the inner core.
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Dependencies are inferred from the claim text.