US 12,351,267 B2
Bicycle stem
Thomas M. Piszkin, Santee, CA (US); D'Arcy O'Connor, Victoria (CA); Jason B. Kenagy, La Jolla, CA (US); and Jan K. Lezny, La Jolla, CA (US)
Assigned to JackRabbit Mobility Inc., La Jolla, CA (US)
Filed by JackRabbit Mobility Inc., La Jolla, CA (US)
Filed on Aug. 30, 2024, as Appl. No. 18/820,770.
Claims priority of provisional application 63/580,505, filed on Sep. 5, 2023.
Prior Publication US 2025/0074538 A1, Mar. 6, 2025
Int. Cl. B62K 21/12 (2006.01); B62K 21/16 (2006.01); B62K 21/18 (2006.01)
CPC B62K 21/16 (2013.01) [B62K 21/18 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A bicycle stem comprising:
a quill being tubular shaped with a quill length extending along an axis, the quill having a first quill end opposite a second quill end, the first quill end having a cradle configured to couple to handlebars, the second quill end having helical slots opposite one another;
a base being tubular shaped with a base length extending along the axis, the base configured to receive the quill, and having a first base end opposite a second base end, the first base end having a bracket configured to couple to a steering mast, the base having apertures opposite one another and the second base end having a groove extending along the axis;
a pin coupled to the base perpendicular to the axis through the apertures; and
a releasable clamp sized to fit around a base outer diameter and configured to compress the base creating a clamping force;
wherein the helical slots are configured to receive the pin and slidably guide the pin along the helical slots of the quill such that the quill is rotatable within the base and relative to the base, from a walk mode, through a transition mode, to a ride mode.