Patent ID: 8578814

Claim:
A bicycle stem with an adjustable tilt, comprising: a stem body having a first end and an opposite second end; first means for attaching the stem at an upper end of a pivoting tube, the first means for attaching being provided at the first end, the first means for attaching comprising means for articulation configured to adjust the tilt of the stem and means for tightening that make it possible to lock the stem in a desired angular position; second means for attaching a handlebar to the stem, the second means for attaching being provided at the second end, wherein said means for tightening comprise first and second tightening elements with an overall semi-cylindrical shape extending into a housing that has an opening that is directed downward so as to allow insertion of the pivoting tube, said first and second tightening elements are provided at their respective upper and lower ends with a receiving recess that is adapted to a periphery of the pivoting tube, said first and second tightening elements extend crosswise into said housing that has an at least partially cylindrical wall cooperating with said first tightening element so as to define said means for articulation together, and said second tightening element is drawn toward said first tightening element by an element that forms a wedge that can move crosswise in said housing.