Revab B.v.

Staxi Corporation Limited

Anton Hendrikus Beumer

Stephanus Theodorus Anthonius Gertrudes Beumer

Stephanus Theodorus Beumer

A wheelchair is configured to be nestable and constructed such that, upon being unested is substantially directly ready for use. An assembly of at least two wheelchairs, wherein the wheelchairs in a nested condition occupy considerably less space than in unnested condition, while upon being unnested, an unnested wheelchair is configured for receiving a person without manually adjusting the seat configuration of the wheelchair.

Assembly of nestable wheelchairs and wheelchair for use in such an assembly

Assembly of nestable wheelchairs and wheelchair for use in such an

The apparatus is a biomechanical body support including a substructure, a seat which is supported by said substructure and is tiltable relative to said substructure, a backrest which is coupled to said seat and is tiltable relative to said seat, the tilting axis of the backrest approximately coinciding with the pivotal point of the hip joint of a person resting on said seat, as well as a leg support also tiltably connected to said seat. According to the invention the backrest (14) is slidably mounted on a reversed U-shaped tilting frame (6) arranged behind the backrest, the fixed leg of said frame, which is directed towards the backrest, being hingedly connected to a first point (A) of the seat (15) while the second leg (12) is length-adjustable and is connected to a second point (B) of the seat, the backrest (14) being connected to the seat (15) by an adjusting mechanism (7), the arrangement being such that upon downward pivoting movement of the tilting frame (6) the backrest (14) slides relative to the tilting frame (6) in the direction of the seat (15).

Biomechanical body support with tilting leg rest tilting seat and

A driving gear for a muscle power driven vehicle, such as a wheel chair, comprising an input shaft drivable by means of a lever, and adapted to be coupled through at least two freewheel clutches to an output shaft arranged to be connected to a wheel hub of the vehicle, wherein the driving gear (4) is housed in a closed housing (11, 12) which is arranged to be coupled through said output shaft (22) to the wheel hub (5) of the vehicle, said input shaft (7) being fixedly coupled to an input gear wheel (14) meshing with two separate intermediate gear wheels (16, 16') adapted to be connected through freewheel clutches operative in opposite directions of rotation to one (20) or the other (20') of two meshing change gear wheels, one of which also meshes with a first output gear wheel (21) mounted on the output shaft.

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Silvolde, Netherlands

Anton Hendrikus Beumer