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1. (WO2018185283) CASSETTE FOR A BICYCLE TRANSMISSION SYSTEM AND SPROCKET FOR A CASSETTE FOR A BICYCLE TRANSMISSION SYSTEM

Pub. No.:    WO/2018/185283    International Application No.:    PCT/EP2018/058856
Publication Date: Fri Oct 12 01:59:59 CEST 2018 International Filing Date: Sat Apr 07 01:59:59 CEST 2018
IPC: B62M 9/10
B60B 27/02
B60B 27/04
Applicants: ZUMA INNOVATION, S.L.
Inventors: ZUBIETA ANDUEZA, Mikel
Title: CASSETTE FOR A BICYCLE TRANSMISSION SYSTEM AND SPROCKET FOR A CASSETTE FOR A BICYCLE TRANSMISSION SYSTEM
Abstract:
Cassette (1) for a bicycle transmission system, which comprises a first sprocket (P1) and a second sprocket (P2) smaller than the first sprocket (P1) and a support structure (S) the sprockets (P1, P2), being the inner edges (CI1, CI2) of the sprockets (P1, P2) configured by grooved surfaces (P11, P21), being the support structure (S) provided with two engagement surfaces (S1, S2) complementary of the grooved surfaces (P11, P21) of the grooved sprockets (P1, P2), such that tangential forces (T) can be transmitted between the sprockets and the support structure (S), comprising the cassette at least a spacer (E1-2, E2-3, E3-4…) between sprockets (P1, P2), wherein the base line (B2) of the second sprocket (P2) is smaller than the average diameter (D1) of the grooved surface (P11) of the first sprocket (P1), extending the spacer (E1-2) between the first sprocket (P1) and the second sprocket (P2) at least from the grooved surface (P11) of the first sprocket (P1) to at least the base line (B2) of the second sprocket (P2), such that the spacer (E1-2) allows to exert axial forces (A) on the first sprocket (P1).