Sole for sports or leisure shoe

Claim 1

A sole for a shoe, the sole being of the type comprising two superposed layers (1, 2), namely a bottom layer (1) made of a firm material that withstands abrasion and whose bottom face is provided with integrally formed rigid projections (13, 14) for bearing against relatively soft surfaces, and a top layer (2) made of a material which is flexible and resilient and whose top face (23) serves as a bearing surface for the foot of the user, the sole being characterized by a front zone associated with the ball of the foot, and a rear zone associated with the heel of the foot, and said sole front zone having a central region, said rigid projections (13) arranged in peripherally spaced relationship around said central region of said front zone of the sole, said bottom layer (1) having at least one opening (10), disposed in said central region of said front zone of said sole, said top layer (2) provided with integrally formed flexible projections (20, 21, 22) of substantially the same height (h) as said rigid projections for gripping hard surfaces, which flexible projections go through said opening (10), in order to project beneath the bottom layer (1), said flexible projections being readily deformable, and said peripherally spaced rigid projections being not easily deformable, said central region of said sole front zone being free of rigid projections.