Abstract:
An embodiment of a wellbore cable comprises a cable core, at least a first armor wire layer comprising a plurality of strength members and surrounding the cable core, and at least a second armor wire layer comprising a plurality of strength members surrounding the first armor wire layer, the second armor wire layer covering a predetermined percentage of the circumference of the first armor wire layer to prevent torque imbalance in the cable.
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.
Abstract:
A rope comprising a plurality of bundle groups, each of said bundle groups having a periphery and comprising a plurality of high strength fibers, at least one low coefficient of friction fiber disposed around at least a portion of the periphery of at least one of the bundle groups.
Abstract:
The present invention provides a wire rope comprising an inner layer of at least four separate wire strands and an outer layer of at least eight separate wire strands, parallel laid. The strands themselves are usually of parallel lay and are usually lubricated. A thermoplastic or an elastomer usually surrounds the inner layer strands and extends between the inner layer strands and the outer layer strands and between the outer layer strands.
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.
Abstract:
A multiple strand twine formed of a plural of monofilaments and multiple filaments wherein a multiple strand formed by undertwisting monofilament along with a plural of the multiple filaments is combined with a monostrand formed by twisting one monofilament alone in the same direction of the undertwisting, the combination of the both strands being then overtwisted in the direction opposite to the undertwisting. And a fish net formed of the above twines.
Abstract:
A cord comprising a plurality of strands of steel wires twisted together, and in which the wires of the strands are substantially free of twist but have a permanent set providing force for locking together the twisted strands of the cord. A method of making a cord in which a plurality of strands are provided by twisting a plurality of steel wires together in one direction, then twisting a plurality of such strands together in a direction opposite the direction in which the wires of the strands were twisted together. An article comprising a cord embedded in a body of elastomeric material which extends into the interstices of the cord, in which the cord comprises a plurality of strands of steel wires twisted together, and in which the wires of the strands are substantially free of twist but have a permanent set providing force for locking together the twisted strands of the cord.
Abstract:
An embodiment of a wellbore cable comprises a cable core, at least a first armor wire layer comprising a plurality of strength members and surrounding the cable core, and at least a second armor wire layer comprising a plurality of strength members surrounding the first armor wire layer, the second armor wire layer covering a predetermined percentage of the circumference of the first armor wire layer to prevent torque imbalance in the cable.
Abstract:
An embodiment of a wellbore cable comprises a cable core, at least a first armor wire layer comprising a plurality of strength members and surrounding the cable core, and at least a second armor wire layer comprising a plurality of strength members surrounding the first armor wire layer, the second armor wire layer covering a predetermined percentage of the circumference of the first armor wire layer to prevent torque imbalance in the cable.