US 11,713,801 B2
Bicycle sprocket
Kenichi Akanishi, Osaka (JP)
Assigned to Shimano Inc., Osaka (JP)
Filed by Shimano Inc., Osaka (JP)
Filed on Nov. 22, 2019, as Appl. No. 16/692,830.
Application 16/692,830 is a continuation of application No. 15/684,634, filed on Aug. 23, 2017, granted, now 10,550,925.
Application 15/684,634 is a continuation in part of application No. 15/612,629, filed on Jun. 2, 2017, abandoned.
Prior Publication US 2020/0088286 A1, Mar. 19, 2020
Int. Cl. F16H 55/30 (2006.01); B62M 9/00 (2006.01); B62M 9/02 (2006.01); B62M 1/36 (2013.01); B62M 3/00 (2006.01)
CPC F16H 55/30 (2013.01) [B62M 9/00 (2013.01); B62M 9/02 (2013.01); B62M 1/36 (2013.01); B62M 3/00 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A bicycle sprocket assembly comprising:
a bicycle sprocket including
a sprocket body having a rotational center axis and including
a central portion having a central opening through which the rotational center axis passes, the central portion having a plurality of internal splines for engaging external splines of a crank arm, the internal splines and the central portion being formed as a one-piece, unitary member of the same material;
an annular portion disposed radially outward from the central portion with respect to the rotational center axis; and
an intermediate portion extending between the central portion and the annular portion in a radial direction about the rotational center axis; and
a plurality of chain-driving teeth extending radially outward from the annular portion of the sprocket body to engage with a bicycle chain,
the sprocket body and the plurality of chain-driving teeth being formed as a one-piece, unitary member of the same material; and
a locking member configured to attach the sprocket body to the crank arm, the locking member having an external thread configured to engage an internal thread of the crank arm.