B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
152/89
B60C 9/18 (2006.01) B60C 9/20 (2006.01) D07B 1/06 (2006.01)
Patent
CA 1272672
ABSTRACT A tire reinforcing steel cord of a two layer twisted construction is disclosed, which cord is composed of a core consisting of from two to four steel filaments and a single sheath consisting of a plurality of the steel filaments surrounding the core in which the steel filaments have a tensile strength of not lower than 260 kg/mm2 and a filament diameter of from 0.32 to 0,42 mm; the twisting direction of the core is reversed to that of the sheath; the twisting angle of the sheath, P2, is 72°?P2?80° and the core twisting angle (P1) and the sheath twisting angle P2 meet the relation of 1.0?P1/P2?1.1.
608053
Bridgestone Corporation
Kawasaki Kiyohito
Swabey Ogilvy Renault
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