Bicycle tire optimized for electric assistance
AssigneeCompagnie Generale Des Etablissements Michelin
InventorsYves Potin, Guillaume Hennebert
Life of this patent
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Abstract
A tire (1) for an electrically assisted bicycle or wheelchair having tire a crown reinforcement, which is radially on the inside of a tread, with the tread being connected to two beads via two sidewalls. The tire has, on at least one of the sidewalls (3) and protruding from the sidewall, a strip (4) of a rubber compound with an axial thickness (ep) that is at least equal to 1 mm and at most equal to 4 mm, at least equal to 10 mm and at most equal to 30 mm. The rubber compound has a Shore A hardness of between 55 and 75, and a glass transition temperature of between −15° C. and 0° C. The compound forms a smooth outer surface (5) that is intended to come into contact with a drive roller bearing a plurality of indenting elements.
Claims4
A tire intended to be fitted to an electrically assisted bicycle or wheelchair, the tire comprising:
- a crown reinforcement, which is radially on the inside of a tread, said tread being connected to two beads via two sidewalls,
- wherein the tire comprises, on at least one of the sidewalls and protruding from the sidewall, a strip of a rubber compound with an axial thickness (ep), perpendicular to the sidewall, that is at least equal to 1 mm and at most equal to 4 mm, and with a radial height (Hr), perpendicular to the axis of revolution of the tire, that is at least equal to 10 mm and at most equal to 30 mm,
- in that said rubber compound of the strip has a Shore A hardness of between 55 and 75, and a glass transition temperature of between −15° C. and −0° C.,
- and in that said rubber compound of the strip forms a smooth outer surface that is intended to come into contact with a drive roller bearing a plurality of indenting elements.
Dependencies are inferred from the claim text.