BICYCLE BALANCING FRAME Russian patent published in 1997 - IPC

FIELD: transport engineering; bicycles. SUBSTANCE: center of gravity in balancing bicycle frame, with rider on saddle, is located above larger rear wheel. Lower end of steering column tube is hinge connected to frame. Upper end of tube is located between bows with slots welded to frame, with locking bar arranged on tube fitted in pair of slots. Bar is lifted by cable and is fitted in other pair of slots under action of attractive force and spring force. Spring is connected to upper end of tube. Other end of spring is connected to frame. Stabilizer caster installed behind rear wheel is lifted over ground. With rider's back bending, frame provides balancing of center of gravity on rough terrain and setting of required pitch of bicycle. Balancing of center of gravity at different size of wheels provides effective usage of attractive force when moving down the slope and reduces its negative action when moving up the slope. EFFECT: enlarged operating capabilities. 1 dwg