Synthetic sling whose component parts have opposing lays

Details Synthetic sling whose component parts have opposing lays Synthetic sling whose component parts have opposing lays

2011-04-19

2011-04-19

Kramer, Dean J (Department: 3652)

Handling: hand and hoist-line implements

Hoist-line slings

C057S231000

Reexamination Certificate

active

07926859

ABSTRACT:
A sling for industrial lifting made of a load-bearing core and a cover. The cover protects the plurality of yarns that make-up the core. Each core yarn is made of a number of core threads twisted together. The core yarns are twisted together where the twist is in the same direction as the individual core strands and a different direction than the twist of the cover. The present invention describes the method of twisting the core yarns together by inserting core yarns substantially parallel into a cover that has a twist opposite of each core strand. As the core strands are inserted into the cover, the twists of the individual core yarns interact with the twist of the cove, resulting in the core yarns twisting together.

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McKenna, H A, Hearle, J W S, O'Hear, N. “Handbook of fibre rope technology” 2004. pp. 77-80.

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