Device and method for measuring resistance to rolling and adherence limits
AssigneeCompagnie Generale des Etablissements Michelin - Michelin & Cie
InventorJean-Rene Simon
Life of this patent
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Abstract
A device in which two identical mounted assemblies E are assembled by a connecting arm which is provided with ballasting means (7) such that the center of gravity G of the loaded device is located below a straight line ZZ' connecting the centers of rotation of the two assemblies E. The device is rotated to impart a cycloidal movement to the center of gravity G to a given angular position. A method of using such devices for carrying out methods of comparative measurements of resistances to rolling and adherence properties of at least two sets of tires or the same properties on at least two types of travel surfaces.
Claims13
A device for measuring rolling resistances and/or adherence limits of sets of tires, characterized by the fact that it comprises at least two identical mounted assemblies E, assembled by a connecting arm having a center axis which is parallel to a straight line ZZ' joining centers of rotation O of the unloaded mounted assemblies, said connecting arm being provided with ballasting means (7) imposing a load on each of the assemblies E such that the center of gravity G of the device is located, at rest, between said straight line ZZ' and a travel surface on which the device will roll, the device also comprising means (9, 18, 20, P) capable upon rotation of the mounted assemblies E of imparting upon the center of gravity G a cycloidal movement enabling the center of gravity to assume a given angular position with respect to a plane containing the straight line ZZ' connecting the centers of rotation 0 of the mounted assemblies and perpendicular to the travel surface.
Dependencies are inferred from the claim text.