Patent ID: 6517456
Filing Date: 2003-02-11
Classification: B62M,Y10T

Abstract:
A force compensation device for a chain derailleur secured to a frame of a bicycle with at least several chainrings or gears, the device comprising:a cable with a first end secured to the derailleur and a second end in a maneuvering member that is attached to the frame of the bicycle and that generates a translation movement of said second end of said cable, said cable sliding in a sheath; a return spring in the derailleur that acts on said first end of said cable and that is in a compressed state when a chain of the derailleur is on a largest one of the chainrings or gears; said maneuvering member comprising at least one counter-acting elastic restoring element that acts on said second end of said cable and that is arranged to be in a relaxed state when said return spring of the derailleur is in the compressed state and in a compressed state when said return spring of the derailleur is in a relaxed state; and wherein said counter-acting elastic restoring element is disposed between a first fixed stop in said maneuvering member and a second stop secured to said second end of said cable.