Pneumatic radial tire

Details Pneumatic radial tire Pneumatic radial tire

2008-07-08

2008-07-08

Fischer, Justin R. (Department: 1733)

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

C152S531000

Reexamination Certificate

active

10892290

ABSTRACT:
A belt layer is provided at its outer side with a band layer comprising edge bands on left and right sides. When a cross sectional area of one band cord is defined as S (unit; mm2) and a modulus of the band cord when its elongation is 2% is defined as M (unit; N/mm2) and disposition density of the band cord per 1 cm of the band layer is defined as D (unit; the number of band cords/cm), an elongation resistance value K (unit; N·the number of band cords/cm) of the band layer which is determined by the following equation (1) is set to 270 or higher and 830 or lower:in-line-formulae description="In-line Formulae" end="lead"?K=S×M×D/100.  (1)in-line-formulae description="In-line Formulae" end="tail"?An elongation percentage T(%) of the band cord in a tire in its natural state in which the tire is not assembled to a rim is set to 0.75% or higher and 1.2% or lower.

REFERENCES:
patent: 5397527 (1995-03-01), Rim et al.
patent: 6557605 (2003-05-01), Yukawa et al.
patent: 6581662 (2003-06-01), Yukawa et al.
patent: 195 09 824 (1996-09-01), None
patent: 1 203 672 (2002-05-01), None
patent: 1 396 355 (2004-03-01), None
patent: 7 215011 (1995-08-01), None
patent: 2002-137606 (2002-05-01), None
patent: 2002-144814 (2002-05-01), None
patent: 2003-072316 (2003-03-01), None
Macxhine translation of JP 2003-072316 (Mar. 12, 2003).

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