Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Reexamination Certificate
2006-08-18
2008-12-30
Fischer, Justin (Department: 1791)
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
C152S511000, C152S512000
Reexamination Certificate
active
07469734
ABSTRACT:
A rubber-fiber composite material of the present invention comprises a non-woven fabric and a rubber which coats the non-woven fabric. At least a part of the non-woven fabric is made of an organic fiber having a single fiber diameter of 10 to 35 μm, a fiber length of 30 to 100 mm and a tensile modulus of 50 GPa or higher. By the use of the non-woven fabric at least a part of which is made of the organic fiber having the above properties, a sufficient impregnation of rubber into the inside of the non-woven fabric is ensured to enable the production of the rubber-fiber composite material having a high stiffness. Using the rubber-fiber composite material of the present invention as the reinforcing material for rubber articles, the resultant rubber articles have enhanced stiffness, improved durability and reduced weight.
REFERENCES:
patent: 3724521 (1973-04-01), Coddington et al.
patent: 4008743 (1977-02-01), Welch
patent: 6209604 (2001-04-01), Nishikawa et al.
patent: 0924109 (1999-06-01), None
patent: 1190846 (2002-03-01), None
Supplemental European Search Report dated Aug. 16, 2004.
Bridgestone Corporation
Fischer Justin
Sughrue & Mion, PLLC
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