ANTITHEFT DEVICE Russian patent published in 1994 - IPC

FIELD: bicycles. SUBSTANCE: device comprises lock 1 and brake consisting of two conjugated levers 2,3 with brake blocks 5 which embrace the wheel with their lower arms and are connected with hand link 8 mounted on handlebar 9. Body of lock 1 has hollow bolt 13 and setting discs. Hollow bolt is connected with hand link and levers by cable 6 in flexible sheath 7. Length of bolt travel in body of lock 1 and that of brake blocks on pressing the steering rod for locking the wheel are interrelated by a mathematical expression . When steering rod is pressed, hollow bolt is fixed by turning of setting discs which engage bolt projections. Lock can be released only at a certain setting of discs. When lock is disengaged, the device functions as a conventional brake. EFFECT: on application of brake the device locks the driving wheel. 4 dwg