Edmond Polchlopek (20 July 1934 – 21 September 2004) was a French

road racing cyclist Road bicycle racing is the cycle sport discipline of road cycling, held primarily on paved roads. Road racing is the most popular professional form of bicycle racing, in terms of numbers of competitors, events and spectators. The two most common ...

and a

bicycle A bicycle, also called a pedal cycle, bike or cycle, is a human-powered or motor-powered assisted, pedal-driven, single-track vehicle, having two wheels attached to a frame, one behind the other. A is called a cyclist, or bicyclist. Bic ...

designer. The so-called ''Polchlopek crankset'' was the first elliptical chainring to be commercialized.

References

* * L. Malfait, G. Storme, M. Derdeyn (2012
Non Circular Chainrings for Cycling
1934 births 2004 deaths Cyclists from Normandy French male cyclists Sportspeople from Calvados (department) {{France-cycling-bio-1930s-stub