Patent ID: 7017715

Claim:
Braking system activated by flexible cable controls, comprising: a central sprag ( 7 ) that is connected to a handlebar ( 2 ) and that is angularly regulated and equipped with a buttonhole ( 14 ) at one end and with two internal symmetrical flaps ( 17 , 17 A) on which there are a series of gaps with such a conformation as to hold ends ( 24 , 24 A) of a spring that are set to automatically fit into the gaps; a ring ( 9 ) to fix the sprag to the handlebar and connected to the handlebar ( 2 ) by a screw ( 11 ) placed in the middle of a steering shaft ( 1 ); said ring having two notches ( 10 , 10 A) where two perpendicular elements ( 13 , 13 A) of the sprag ( 7 ) enter; a central mobile body ( 6 ) that is connected to two flexible cables ( 4 , 4 A) that transmit respective braking couples, front and back, the central mobile body ( 6 ) being inserted in the buttonhole ( 14 ) of the central sprag ( 7 ) and free in rotation, and symmetrically crossed by the two flexible cables; the spring ( 23 ) being inserted about a central axis ( 20 ) of the mobile body ( 6 ) and having ends that enter the gaps inside the sprag ( 7 ); and two flaps ( 21 , 21 A) tangent to the central axis ( 20 ) where the spring is placed, and which, beyond a prefixed rotation angle of the mobile body, touch the spring, extending the ends ( 24 , 24 A) fitted into the gaps, so permitting a shift to a next gap to restore traction lost because of wear and tear.