WHEELED WALKING DRIVER Russian patent published in 1995 - IPC

FIELD: transport driving means. SUBSTANCE: device has hub 2 secured on drive shaft 1. Mounted on hub are joints 3,4,5 arranged symmetrically relative to center over circumference in 120 degree steps. Joints couple hub with middle parts of bell-cranks 6,7,8, axle of joint 3 being installed for movement in hub radial direction. First lever 6 is connected by one end with rear part of shoe 13 and by other end, with front part of shoe 11 whose rear part is hinge-coupled with one end of following bell-crank 7. Other end of this bell-crank is hinge-coupled with front part of shoe 12. Bell-crank 8 couples shoes 12 and 13 in the same manner. Joints 10 on each shoe are arranged at equal distance from its ends, and distance between these joints is less than distance between joints on hub which couple bell-cranks connected with shoes. EFFECT: provision of easy negotiation of stair flights irrespective of direction of movement, cut down materials and power usage, simplified design, enhanced adaptability to manufacture. 6 cl, 18 dwg