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Method of and apparatus for making twisted cable and the cable produced thereby
   
Document Number
US Patent 6526738
Issued Date
March 4, 2003
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Abstract
A method of and an apparatus for making twisted electrical cable, such as 600 volt secondary distribution cable, and the twisted cable product are disclosed. The apparatus comprises a first plurality of stationary payoff reels each wound with a length of bare wire conductor. The conductors are simultaneously payed off the reels to a pay out accumulator for accumulating a portion of the conductors during replacement of spent pay out reels. At least one extrusion process arranged downstream of the accumulator applies a plastic insulation material to a respective conductor as it passes through its respective extrusion process. A cooling and/or curing trough through which water is flowed cools and/or cures the plastic insulation. A take-up accumulator arranged downstream of the cooling and/or curing trough accumulates a portion of each insulated conductor during changeover of the take-up reel arranged downstream of the take-up accumulator. The take-up reel may be rotated about a first axis to twist each insulated conductor about its longitudinal axis, and may additionally simultaneously twist the insulated conductors about one another to form a twisted electrical cable. The take-up reel may also be rotated about a second axis for taking up the twisted electrical cable.
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Number of Claims:
13
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Owner
Southwire Company (Carrollton, GA)
Published
March 4, 2003
Application Number
10/137,764
Filed
May 2, 2002
US Classification
57/7   57/314
Int'l Classification
D02G   3/44   (20060101)  
Examiner
Assistant Examiner
Attorney/Law Firm
Parent Case
This is a division of application Ser. No. 09/314,317, filed May 19, 1999, now U.S. Pat. No. 6,430,913.
USPTO Field of Search
57/7   57/10   57/11   57/12   57/223   57/241   57/258   57/295   57/296   57/314   57/906  
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