Czech Patent # 152,002 - Favorit

Czech Patent 152,002 - Favorit Special main image

This 1971 patent struggles to fill an A4 page with content - a refreshing change from modern patents that often run to dozens of pages of questionable relevance or originality.

Despite its brevity, it does manage to show a drawing of what is unquestionably the distinctive pulley cage design of the Favorit Special. This is important to derailleur geeks because it provides a date for this design (1971) and identifies the designers (Otto Šaman and Vlastimil Anténe).

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Favorit Special derailleur (1st style) thumbnail