Electricity: conductors and insulators – Conduits – cables or conductors – Conductive armor or sheath
Patent
1990-03-28
1991-08-27
Nimmo, Morris H.
Electricity: conductors and insulators
Conduits, cables or conductors
Conductive armor or sheath
174 23R, 174 24, 174106D, H01B 718, H01B 728
Patent
active
050435396
ABSTRACT:
A bonded sheath cable (20) includes a core (22) and a longitudinally wrapped outer shield (36) which encloses the core. An outer surface of the shield is provided with a layer (39) of a copolymer adhesive material which causes the shield to bond to an outerlying plastic jacket (41). The shield is wrapped longitudinally about the core to have overlapping portions (51,53) which form a longitudinal seam (38). In order to avoid seam splitting of the jacket along a line aligned with the longitudinal edge (55) of the outer overlapping portion, control means (60) comprising a polymeric material is provided to extend in bicircumferential directions from the longitudinal edge thereby reducing the bond along the overlap seam and allowing the cable to bend and/or twist without causing a stress concentration in the plastic overlying the longitudinal edge.
REFERENCES:
patent: 4030689 (1989-05-01), Ramsey et al.
patent: 4075419 (1978-02-01), Virkus
patent: 4100003 (1978-07-01), Trusch
patent: 4145567 (1979-03-01), Bahder et al.
patent: 4439623 (1984-03-01), Aloisio, Jr. et al.
patent: 4563540 (1986-01-01), Bohannon, Jr. et al.
patent: 4569704 (1986-02-01), Bohannon, Jr. et al.
patent: 4729629 (1988-03-01), Saito et al.
Connole Kent B.
Cuprak, Jr. Richard S.
Dye Karen D.
McKee Michael K.
Mitchell David M.
AT&T Bell Laboratories
Nimmo Morris H.
Somers E. W.
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