French Patent # 785,015 Addition # 47,985

French Patent 785,015 Addition 47,985 - BGA Velectrik main image

This is the second of two patents covering Claudius Blanchard’s BGA Velectrik derailleur (see also French patent # 785,015).

This patent covers a simple (that word again) indexing mechanism delivered by making small indents in the slot along which the mechanism slides.

All the examples of BGA Velectrik derailleurs that I have seen do not have these indents - they have the plain vanilla slot shown in French patent # 785,015.

Browse associated derailleurs.

BGA Velectrik thumbnail

Share this page