F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
F16D7/04—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type
F16D7/048—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type with parts moving radially between engagement and disengagement
Outil a moteur a deux vitesses dont le passage d'une vitesse a l'autre est effectue automatiquement par un dispositif a came, tel que perceuses ou analogues