WHEELCHAIR WITH HYDRO-MECHANICAL DRIVE Russian patent published in 2011 - IPC A61G5/02 

FIELD: medicine.

SUBSTANCE: invention relates to transport means for invalids and can be applied for movement of people, who suffer from malfunction of musculoskeletal system. Substance of invention: wheelchair consists of two leading wheels of large diametre, regulated back, seat with armrests, with lever mechanism, fastened to frame by bracket, with connecting rod and from two leading wheels of smaller diametre, with possibility of turning. Chair contains hydraulic system, which includes first and second compact hydrocylinders, distributor, first, second, third and forth reverse valves, control levers, hydro-motor, hydraulic tank and mechanical drive with reducer. First and second hydraulic cylinders are connected with distributor trough first and second reverse valves accordingly. Rods of the first and the second hydrocylinders are connected with the first and the second control levers, distributor being connected to hydro-motor, which in its turn is connected to mechanical drive with reducer. Hydraulic tank is connected with third and forth reverse valves, which are built-in into the first and the second hydrocylinders.

EFFECT: reduction of weight-and-size characteristics, in comparison with electro-drive wheelchairs; reduction of spent on movement energies more than by 2 times and development of stable movement speed; simplicity and comfort of wheelchair application; expansion of functional possibilities of transport means.

4 dwg