Safety support with improved endurance

Details Safety support with improved endurance Safety support with improved endurance

2006-04-21

2008-10-21

Johnstone, Adrienne C (Department: 1791)

Resilient tires and wheels

Tires, resilient

Cushion and pneumatic combined

C152S520000

Reexamination Certificate

active

07438099

ABSTRACT:
A safety support includes a substantially cylindrical base configured to conform to the rim. The support further includes a crown with a radially outer wall configured to enter into contact with an internal wall of a crown of the tire in the event of a loss of pressure and to leave clearance therebetween at the rated operating pressure of the tire. The safety support further includes an annular body linking the base and the crown of the support. An envelope of the radially outer wall of the support crown is defined, when the support is mounted on the rim, with f being the deflection undergone by the support mounted on the rim under a load Z, the rated load of the tire, the envelope being confined between two cylinders of revolution of radius Rmaxand Rminsatisfying the following relationship:in-line-formulae description="In-line Formulae" end="lead"?0.2f<Rmax−Rmin<2f.in-line-formulae description="In-line Formulae" end="tail"?

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