US 11,697,473 B2
Bicycle rear derailleur
Nobukatsu Hara, Sakai (JP)
Assigned to SHIMANO INC., Sakai (JP)
Filed by SHIMANO INC., Sakai (JP)
Filed on Mar. 15, 2021, as Appl. No. 17/202,298.
Prior Publication US 2022/0289337 A1, Sep. 15, 2022
Int. Cl. B62M 9/124 (2010.01); B62M 9/1242 (2010.01); B62M 9/126 (2010.01); B62M 9/125 (2010.01)
CPC B62M 9/124 (2013.01) [B62M 9/125 (2013.01); B62M 9/126 (2013.01); B62M 9/1242 (2013.01); B62M 2009/12406 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A bicycle rear derailleur comprising:
a base member configured to be mounted to a bicycle frame;
a linkage structure pivotally coupled to the base member;
a movable member pivotally coupled to the linkage structure such that the movable member is movable relative to the base member;
a first pulley assembly including:
a first pulley support pivotally coupled to the movable member about a first pivot axis; and
a first toothed pulley configured to engage with a bicycle chain and rotatably coupled to the first pulley support about a first pulley axis spaced apart from the first pivot axis; and
a second pulley assembly including:
a second pulley support pivotally coupled to the movable member about a second pivot axis spaced apart from the first pivot axis;
a second toothed pulley configured to engage with the bicycle chain and rotatably coupled to the second pulley support about a second pulley axis spaced apart from the second pivot axis; and
a third toothed pulley configured to engage with the bicycle chain and rotatably coupled to the second pulley support about a third pulley axis spaced apart from the second pivot axis and the second pulley axis.