B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
B60C 17/06 (2006.01) B60C 17/04 (2006.01)
Patent
CA 2047402
A core assembly for a pneumatic tire, which is fitted annularly to an outer peripheral surface of a well portion of a rim, and which rotates should the pneumatic tire collapse owing to a decline in its internal pressure, as an outer surface of the core assembly comes into contact with an inner peripheral surface of a crown portion of the pneumatic tire and an inner peripheral surface of the core assembly slides over the outer peripheral surface of the well portion of the rim. The core assembly includes a sliding portion formed of a resin material having good sliding properties and high heat resistance, and a main body to which the sliding member is secured and which is formed of a material having a high rigidity and a low specific gravity. Accordingly, since the surface of the core assembly contacting the rim is constituted by the sliding member, the core assembly is rotated smoothly when the internal pressure of the pneumatic tire declines, and the overall weight of the core assembly is reduced.
Ãme d'un pneumatique, montée de façon annulaire sur la surface externe périphérique de la gorge d'une jante. L'âme peut tourner, advenant l'affaissement du pneumatique à la suite d'une perte de pression interne, lorsque sa surface externe entre en contact avec la surface interne périphérique du sommet du pneumatique. La surface périphérique de l'âme glisse alors sur la surface périphérique externe de la gorge de la jante. L'âme comprend : une section glissante fabriquée de résine ayant de bonnes qualités de glissement et une résistance élevée à la chaleur; et un corps, sur lequel est fixé l'élément glissant, formé d'un matériel très rigide à densité faible. Comme la surface de l'âme qui est en contact avec la jante est constituée par la section glissante, l'âme peut tourner sans heurt lorsque la pression interne du pneumatique baisse et que le poids total de l'âme est réduit.
Ito Shungo
Wada Mitsunori
Bridgestone Corporation
Marks & Clerk
LandOfFree
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