Runflat tire system and support ring therefor

Details Runflat tire system and support ring therefor Runflat tire system and support ring therefor

2007-02-20

2007-02-20

Johnstone, Adrienne C. (Department: 1733)

Resilient tires and wheels

Tires, resilient

Cushion and pneumatic combined

C152S520000

Reexamination Certificate

active

10856946

ABSTRACT:
A support ring for a runflat tire system which comprises an annular body made of an elastic material having a radially inner circumferential surface which fits to a mounting portion of a wheel rim when mounted thereon, and a radially outer circumferential surface which comes into contact with the inside of the tread portion of a pneumatic tire mounted on the wheel rim when the tire is deflated and loaded, wherein the outer circumferential surface is wider in the axial width than the inner circumferential surface, and in a cross section including the central axis of the support ring, the outline of the annular body is substantially a trapezoidal shape of which two parallel long and short sides are the outer and inner circumferential surfaces, respectively, and the remaining two sides are inclined at acute angles with respect to the long side.

REFERENCES:
patent: 1008772 (1911-11-01), Andrew
patent: 3509928 (1970-05-01), Aghnides
patent: 3844325 (1974-10-01), Betancourt
patent: 4921029 (1990-05-01), Palinkas et al.
patent: 5139066 (1992-08-01), Jarman
patent: 5885383 (1999-03-01), French
patent: 6564842 (2003-05-01), Abinal et al.
patent: 03082601 (1991-04-01), None
patent: 7-32827 (1995-02-01), None
patent: WO 89/05736 (1989-06-01), None
patent: WO 00/76791 (2000-12-01), None

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