Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Patent
1996-10-04
2000-05-23
Johnstone, Adrienne C.
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
57206, 57207, 57212, 57311, 57902, 152451, 152527, 152531, 152534, B60C 304, B60C 918, B60C 920, D07B 106
Patent
active
060655186
ABSTRACT:
A heavy duty pneumatic tire comprises a belt disposed radially outside a carcass and radially inside a tread portion, the belt comprising at least one ply of at least one high-elongation steel cord, the high-elongation steel cord being formed by twisting at least three waving steel filaments together to form a core and a sheath surrounding the core. The waving filaments change place repeatedly along the longitudinal direction of the cord such that one of the filaments forms the core in a portion, but in a different portion of the cord, the same filament forms part of the sheath, thereby defining a plurality of first parts with the core and a plurality of second parts without the core which are disposed alternately in the longitudinal direction of the cord. The elongation at break of the high-elongation steel cord is in the range of from 4 to 10%.
REFERENCES:
patent: 4420025 (1983-12-01), Ghilardi et al.
patent: 5287691 (1994-02-01), Okamoto et al.
patent: 5351470 (1994-10-01), Shinmura
patent: 5688597 (1997-11-01), Kohno
Kohno Masatsugu
Miyawaki Rie
Johnstone Adrienne C.
Sumitomo Rubber Industries Ltd.
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