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US 9,660,431 B2Granted
Vibration resistant cable
AssigneeSouthwire Company
InventorStephen Lee Spruell
Life of this patent
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Abstract
Vibration resistant cables containing a first conductor and a second conductor, each having a diameter d, are disclosed. The second conductor is twisted around the first conductor at a lay length between 3 feet and 6 feet to eliminate bagging of the vibration resistant cable during installation.
Claims20
A vibration resistant cable comprising:
- a first conductor having a diameter d;
- and
- a second conductor having the diameter d, the second conductor twisted around the first conductor at a lay length between 3 feet and 6 feet to eliminate bagging of the vibration resistant cable during installation;
- wherein:
- the first conductor comprises a plurality of first aluminum strands surrounding a first core steel strand, and the second conductor comprises a plurality of second aluminum strands surrounding a second steel core strand.
2 more elements
A vibration resistant cable comprising:
- a first conductor comprising a plurality of first strands surrounding a first core strand;
- and
- a second conductor comprising a plurality of second strands surrounding a second core strand, the second conductor twisted around the first conductor at a lay length that is based at least in part on a locking force of the first conductor or the second conductor;
- wherein the locking force comprises a compressive spring force based at least in part on a first spring rate associated with the first conductor or a second spring rate associated with the second conductor, the locking force preventing bagging in the first conductor or the second conductor;
- and
- wherein bagging results from a relative movement between the first conductor and the second conductor caused at least in part by sheave pushback during installation of the vibration resistant cable.
3 more elements
Dependencies are inferred from the claim text.