US 12,091,133 B2
Cinch direct mount 2X ring system
Evan Michael Choltco-Devlin, North Vancouver (CA); Jason Kennett, North Vancouver (CA); and David Robert Edwards, Vancouver (CA)
Assigned to Fox Factory, Inc., Duluth, GA (US)
Filed by Fox Factory, Inc., Duluth, GA (US)
Filed on Feb. 14, 2023, as Appl. No. 18/109,773.
Application 18/109,773 is a division of application No. 17/328,421, filed on May 24, 2021.
Application 17/328,421 is a division of application No. 15/953,903, filed on Apr. 16, 2018, granted, now 11,014,628, issued on May 25, 2021.
Claims priority of provisional application 62/491,958, filed on Apr. 28, 2017.
Prior Publication US 2023/0234673 A1, Jul. 27, 2023
Int. Cl. B62M 9/10 (2006.01); B62M 1/36 (2013.01); B62M 3/00 (2006.01); F16H 55/30 (2006.01)
CPC B62M 9/105 (2013.01) [B62M 1/36 (2013.01); B62M 3/00 (2013.01); F16H 55/30 (2013.01)] 1 Claim
OG exemplary drawing
 
1. A bicycle chainring assembly comprising:
a drive side crank arm comprising a chainring assembly interface,
the chainring assembly interface having a circumference and an axial length;
a first chainring having a first outer diameter and a first center assembly shape,
the first outer diameter having a plurality of teeth thereon;
a second chainring having a second outer diameter and a second center assembly shape,
the second outer diameter having a plurality of teeth thereon,
the second outer diameter being different than the first outer diameter;
a single fastener to couple the first chainring and the second chainring with the chainring assembly interface, such that at least one of the first center assembly shape or the second center assembly shape engages with the chainring assembly interface, the first center assembly shape comprising:
an inner diameter that engages with the chainring assembly interface about the circumference of the chainring assembly interface over an entirety of the axial length; and
an outer diameter comprising a plurality of splines about the circumference of the first center assembly shape,
the plurality of splines having a second axial length; and
the second center assembly shape engages with the plurality of splines about the circumference of the first center assembly shape over an entirety of the second axial length.