BICYCLE SPROCKET FOR USE WITH A MULTI-GEAR REAR CASSETTE

摘要

A rear bicycle sprocket for use with a multi-gear rear cassette is provided. The sprocket includes a chain engaging portion and a mounting portion having generally annular shape about a central axis and a plurality of support arms, integrally formed with the chain engaging portion and with the mounting portion. The sprocket further includes a plurality of space maintaining protrusions, each space maintaining protrusion extending axially forwardly from an axially forward surface of a corresponding support arm and integrally formed therewith. A multi-gear rear cassette having a plurality of sprockets coaxially mounted together wherein the plurality of sprockets includes the rear bicycle sprocket mounted axially rearmost and a bicycle including the multi-gear rear cassette are further provided.

主权项

1. A bicycle sprocket for use with a multi-gear rear cassette, the sprocket comprising:
a chain engaging portion having a generally annular shape about a central axis, a radially outward edge of the chain engaging portion comprising a plurality of circumferentially spaced and radially outwardly extending teeth for mechanical engagement with a bicycle chain; a mounting portion having a generally annular shape about the central axis, a radially inward edge of the mounting portion defining an aperture shaped to receive therein a freehub body and a radially outward edge of the mounting portion radially spaced apart from a radially inward edge of the chain engaging portion; a plurality of support arms, integrally formed with the chain engaging portion and with the mounting portion, extending radially outwardly from the radially outward edge of the mounting portion to the radially inward edge of the chain engaging portion; and a plurality of space maintaining protrusions, each space maintaining protrusion integrally formed with and extending axially forwardly from an axially forward surface of a corresponding support arm.