Bicycle sprocket assembly
OwnerToru Iwai, Tetsu Nonoshita +1inventors
InventorsToru Iwai, Tetsu Nonoshita, Toyoshi Yoshida
Life of this patent
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Abstract
A bicycle rear sprocket assembly 28 comprises a sprocket carrier 31, at least one metallic support 33, and at least one rear sprocket 28a-28h. The sprocket carrier 31 is made of a non-metallic material. The at least one metallic support 33 is attached to at least one of a first circumferentially facing surface 41 and a second circumferentially facing surface 43 of at least one mounting arm 39 of the sprocket carrier 31. The at least one rear sprocket 28a-28h is made of a metallic material. A sprocket body 51 of the at least one rear sprocket 28a-28h is attached to the at least one metallic support 33.
Claims20
A bicycle sprocket assembly comprising:
- a sprocket carrier made of a non-metallic material, the sprocket carrier including a central base and at least one mounting arm extending radially outwardly from the central base with respect to a rotational center axis of the bicycle sprocket assembly, the at least one mounting arm having a first circumferentially facing surface and a second circumferentially facing surface opposite to the first circumferentially facing surface in a circumferential direction with respect to the rotational center axis;
- at least one metallic support attached to at least one of the first circumferentially facing surface and the second circumferentially facing surface of the at least one mounting arm;
- and
- at least one sprocket made of a metallic material, the at least one sprocket including a sprocket body and a plurality of sprocket teeth extending radially outwardly from the sprocket body with respect to the rotational center axis, the sprocket body being attached to the at least one metallic support.
Dependencies are inferred from the claim text.