French Patent # 2,878,499 - MAVIC

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French Patent # 2,878,499 - MAVIC

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I have not taken the time to fully understand this patent. It dates from 2004, after the the MAVIC Mektronic. Unlike the Mektronic design, it appears to describe a derailleur that combines MAVIC's signature use of the guide pulley to provide power with a parallelogram action.

I don't think it ever made it to production - a great pity.

Publisher: L’Institut national de la propriété industrielle
Inventor: Jean Pierre Mercat and Bertrand Cauvin
Country: France
Date: Priority date December 2004?
Derailleur brands: MAVIC
Derailleurs: none

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