Patent ID: 11867274
Assignee: nan
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 9:
10. A sprocket for use in the sprocket assembly of claim 1, wherein
said sprocket defines a plurality of first fixing apertures for use in releasably securing the sprocket to a sprocket carrier, and further defines a plurality of second fixing apertures,
each of said plurality of first fixing apertures is generally key-hole shaped and comprises a first generally round portion having a centre and a second generally linear portion, the second portion extending in a first circumferential direction from the first portion, the first portion shaped to allow the passage of a nut of one of the plurality of fixing devices therethrough and the second portion shaped to prevent the passage of said nut of said one of the plurality of fixing devices therethrough,
each of said plurality of second fixing apertures is generally circle-shaped and comprises a single circular portion having a centre, and
the centres of the generally round first portions of the first fixing apertures and the centres of the generally circular portions of the second fixing apertures are spaced equidistantly around a virtual circumference of the sprocket, with the first fixing apertures and the second fixing apertures distributed around the virtual circumference in an alternating pattern.