STEP-BY-STEP MOTION APPARATUS Russian patent published in 1997 - IPC

FIELD: sports and medical equipment, in particular, orthopedics. SUBSTANCE: apparatus has carcass with members, which may be attached to human body, and two pairs of levers pivotally coupled with carcass. Each pair has coxofemoral and talocrural levers interconnected through pivot unit and connected with their one ends to carcass and with their other ends to boot supporting platform. Pivot unit retaining mechanism with ratchet toothed gear is kinematically connected with movable platform. Carcass further has cardan unit with retaining mechanisms, T-shaped strip with spikes and cylindrical cover plates on its short ends. T-shaped strip is connected with its long end to rear part of seat through cardan shaft. Cardan unit has front and side inclination pivot joints, which are arranged in mutually perpendicular position one with respect to the other and provided with control members. Each retaining mechanism for pivot and cardan units has catch with cylindrical leg provided with pin and spring. Catch may be axially moved relative to casing unit. Members, which may be attached to human body, are further provided with suspenders, knee and talocrural shields. Pairs of coxofemoral and talocrural levers are positioned adjacent to inner parts of User's legs and pivotally connected with seat base. Apparatus allows load to be supported at any stage of lifting motion and movement, for example, from position, in which human body is inclined forward, to sides. EFFECT: increased efficiency, enhanced reliability in operation by relieving dynamic loadings from catch serration. 8 dwg