US 12,296,910 B2
Front chainring assembly
Kevin Jasper, Spearfish, SD (US); Isaiah Miller, Spearfish, SD (US); and Joshua Neiman, San Luis Obispo, CA (US)
Assigned to SRAM, LLC, Chicago, IL (US)
Filed by SRAM, LLC, Chicago, IL (US)
Filed on Sep. 28, 2022, as Appl. No. 17/955,152.
Prior Publication US 2024/0101214 A1, Mar. 28, 2024
Int. Cl. B62J 45/421 (2020.01); B62J 45/411 (2020.01); B62M 1/36 (2013.01); B62M 9/10 (2006.01)
CPC B62J 45/421 (2020.02) [B62J 45/411 (2020.02); B62M 1/36 (2013.01); B62M 9/105 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A front chainring assembly comprising:
a chainring carrier adapted to be coupled to a crank arm, wherein the chainring carrier is rotatable about a rotation axis extending in an axial direction, and wherein the chainring carrier comprises an outer periphery comprising carrier threads and an axial stop surface; and
a chainring structure comprising an inner periphery comprising chainring threads and an outer periphery comprising a plurality of teeth and an axial face, wherein the inner periphery of the chainring structure is threadably engaged with the outer periphery of the chainring carrier, wherein the axial face comprises a plurality of circumferentially spaced axial projections separated by circumferentially spaced recesses, and wherein the chainring structure is rotatable relative to the chainring carrier between a disengaged position and an engaged position, wherein the circumferentially spaced axial projections engage the stop surface when the chainring structure is the engaged position.