G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
G06M1/00—Design features of general application
G06M1/28—Design features of general application for zeroising or setting to a particular value
G06M1/30—Design features of general application for zeroising or setting to a particular value using heart-shaped or similar cams; using levers
G06M1/303—Design features of general application for zeroising or setting to a particular value using heart-shaped or similar cams; using levers with drums
"dispositif amovible de blocage temporaire d'un organe de commande interne d'une boite de vitesses, et boite de vitesses comportant un tel dispositif"