Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Reexamination Certificate
2003-11-10
2008-03-04
Fischer, Justin R. (Department: 1733)
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
C152S527000, C152S531000, C152S533000
Reexamination Certificate
active
07337817
ABSTRACT:
At least one belt layer in which one or plural rubber-coated belt cords are arranged to be spirally wound almost in parallel with a tire circumferential direction on the outer circumference of a body ply. The belt cord is small in the increase rate of tensile load to stretch rate in the range of a predetermined stretch rate or less, but becomes large in the increase rate of the tensile load in another range exceeding the predetermined stretch rate. Therefore, during a vulcanizing and forming process, the belt cord is expanded together with unvulcanized compounded rubber under a small tensile load, and it does not occur to prevent body ply cords from being expanded, so that a green tire is vulcanized and formed with respective parts thereof being adhered as a result of being expanded to keep a correct shape.
REFERENCES:
patent: 4140168 (1979-02-01), Caretta
patent: 5419383 (1995-05-01), Iwamura
patent: 5558144 (1996-09-01), Nakayasu et al.
patent: 6926053 (2005-08-01), Miyazaki et al.
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patent: 9-156312 (1997-06-01), None
patent: 2001-63310 (2001-03-01), None
English translation of JP 2001-63310.
Fischer Justin R.
Fuji Seiko Co. Ltd.
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