US 12,280,852 B2
Bicycle crank arm
Hong-Chou Lee, Taichung (TW); Chen-Hsiung Chen, Taichung (TW); En-Chieh Chen, Taichung (TW); and Joachim Stuermer, Schweinfurt (DE)
Assigned to SRAM, LLC, Chicago, IL (US)
Filed by SRAM, LLC, Chicago, IL (US)
Filed on Sep. 27, 2022, as Appl. No. 17/954,043.
Claims priority of provisional application 63/254,647, filed on Oct. 12, 2021.
Prior Publication US 2023/0111794 A1, Apr. 13, 2023
Int. Cl. B62M 3/00 (2006.01); B62M 1/36 (2013.01)
CPC B62M 3/00 (2013.01) [B62M 1/36 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A bicycle crank comprising:
a first lug adapted to connect a spindle;
a second lug adapted to connect a pedal; and
a transition region interconnecting the first lug and the second lug, the transition region being formed from a fiber reinforced thermoplastic material that includes a fiber component and a thermoplastic component, wherein the transition region comprises a base section that has a base surface extending a length of the transition region, a first reinforcement structure that extends the length of the transition region from the base surface, a second reinforcement structure that extends the length of the transition region from the base surface, is the second reinforcement structure being spaced apart from the first reinforcement structure; and an intermediate reinforcement structure that is disposed between the first reinforcement structure and the second reinforcement structure.