Patent ID: 7096907
Filing Date: 2006-08-29
Classification: B60C,Y10T

Abstract:
1. A run-flat support ring for mounting inside a tire on a wheel rim; the tire having a tread strip region; the wheel rim having an annular depression and an annular raised surface; the support ring defining an axial direction, an inboard side, and an outboard side; the support ring comprising: a substantially cylindrical base, said base having a radially inner-most surface that includes i) a plurality of circumferentially placed protuberances configured to engage the annular depression; ii) a plurality of circumferentially placed tabs configured for engaging the wheel rim proximate to the annular depression; and iii) a plurality of circumferentially placed ribs, extending longitudinally along the axial direction, and configured for engaging the annular raised surface; a substantially cylindrical cap, said cap configured for contact with the tread strip region in the event of a sufficient loss of air pressure; and a substantially cylindrical body connecting said base and said cap, said body having an axial width, said cap having an axial width, wherein the axial width of said cap is greater than said axial width of said body such that said cap extends in the axial direction along the outboard side of the support ring.