Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Indefinite or running length flexible strand – rod – tube – or...
Patent
1981-03-23
1983-10-04
Ball, Michael W.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Indefinite or running length flexible strand, rod, tube, or...
29755, 156555, H01B 1300
Patent
active
044076932
ABSTRACT:
Several embodiments of reduced crosstalk ribbon cable having alternating twisted and straight sections of indefinite length are disclosed, crosstalk being reduced by differing starting positions of alternate twisted pairs, differing lay of alternate twisted pairs, and variation in lay along the length of alternate twisted pairs. A preferred embodiment uses offset starting positions, and a lay in alternate twisted pairs substantially longer than that of adjacent pairs, becoming shorter to minimize the nontwisted portion resulting from the time to bring adjacent pairs into planar alignment. An apparatus for making such cable is also disclosed, having several wire supply twisters and several second twisters, removing the twist inserted by the wire supply twisters while forming twisted pair ribbon cable sections, allowing indefinitely long twisted sections. Twisters are provided in two groups operating in opposite directions, preventing curl of the cable. The paired conductors are maintained in precisely laterally spaced relationship by heat bonding to thermoplastic film.
REFERENCES:
patent: 491109 (1893-02-01), Holman
patent: 1907651 (1933-05-01), Morgan et al.
patent: 3579823 (1971-05-01), Greasitt
patent: 4202722 (1980-05-01), Paquin
Allied Corporation
Ball Michael W.
DeClercq James P.
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