SOLID TYRE FOR MEASURING ROAD ADHESION OF A VEHICLE EQUIPPED THEREWITH

WIPO Patent Application WO2003070492

A3

The invention concerns a solid tyre comprising a running tread (1) including at least a unit (3) for measuring the tyre road adhesion, comprising: a central zone (10), a surrounding zone (20) around the central zone (10), a sensor (40) responsive to at least a tangential force exerted on the radially outer summit (11) of the central zone (10) being provided opposite the summit (11), the central zone (10) and the surrounding zone (20) fulfilling the two conditions: a) Rzzc < RZZe b) (i) Rxzc/Rzzc > Rxze/Rzze or (ii) Ryzc/Rzzc > Ryze/Rzze, wherein x, y and z represent the circumferential, axial and radial directions for the tyre, Rzzc and Rzze represent the rigidity levels of the central zone (10) and of the surrounding zone (20) at a force oriented perpendicularly to the radially outer surface (5), Rxzc and Rxze (respectively Ryzc and Ryze) represent the rigidity levels of the central zone (10) and of the surrounding zone (20) at a force oriented tangentially to the radially outer surface (5) in the circumferential direction (X) of the tyre (respectively in the axial direction (Y)).

DAVAL BERTRAND (FR)

PCT/EP2003/001558

August 18, 2005

February 17, 2003

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MICHELIN SOC TECH (FR)
MICHELIN RECH TECH (CH)
DAVAL BERTRAND (FR)

B60C11/00; B60C11/03; G01N19/02; G01N19/04; B60C19/00; (IPC1-7): B60C11/00; G01N19/04; B60C11/03; B60T8/00

EP1231120A1	2002-08-14
EP1076235A1	2001-02-14
EP0937615A2	1999-08-25
DE19945264A1	2001-03-29
DE3937966A1	1991-05-16
DE3939917A1	1991-06-06
US5864056A	1999-01-26

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