Patent ID: 6217471
Filing Date: 2001-04-17
Classification: B21D,F16G

Abstract:
A drive belt for a continuously variable transmission, comprising:an endless metal band assembly, provided as a set of nested metal bands, and at least partly surrounded by transverse elements for at least clamping the drive belt in between sheaves of a set of pulleys,one of the nested metal bands being provided with a central portion having a cross-section, the cross-section having a minimal but consistent degree of greater thickness than surrounding lateral portions,first and second lateral faces, anda first contact face with a first curvature (R1) and a second contact face with a second curvature (R2), both contact faces being smoothly curved,each of the first and second curvatures defining a circular radius greater than one meter, andwherein the one band is substantially symmetrically shaped in respect of an imaginary plane located centrally between the first and second lateral faces (L) of the one band.