A wheelchair including a chassis and side parts said chassis supporting a seat and a seat back, arms being provided on both side parts of the seat, each of the two arms forming with a side part an arm and side unit vertically adjustable in guides on the chassis and lowerable at least into a position wherein the arm supporting surface of the arm is located in a plane with the seat, the unit being lockable at the desired adjusted height, and wherein each arm and side unit is formed by an inverted ...

A wheelchair comprises a frame which supports the wheels, the seat, back rest, and foot rests of the wheelchair. The seat, the back rest, and the foot rests are adjustable in relation to one another. The frame comprises a lower and an upper frame section. On the lower frame section there are disposed the wheels of the wheelchair, and on the upper frame section there are disposed the seat, the back rest, and the foot rests. The wheelchair has an adjustment device for vertical adjustment of the up...

A wheelchair is disclosed having two adjustment structures for allowing adjustment of the elevation of two handlebars relative to the two parallel vertical main frame bars thereof, each adjustment structure including a holder block fixedly provided at the top of the respective vertical main frame bar to accommodate the respective handlebar, a holding down block movably mounted in the holder block, and a locking lever pivoted to the holder block for moving a locating rod into one of a vertically ...

A wheelchair for the use of invalids has two propelling wheels, at least one of which can be swung rearwardly of the seat of the chair. An armrest is provided which can be swung down, so as to be in the horizontal and permitting the user of the wheelchair to slide on the downswung armrest onto a seating or lying accommodation, the armrest being constituted by two plate elements hinged to one another, so that when unfolded the armrest offers a wide surface adapted to bridge a wide gap between the...

An improved wheelchair for mechanically assisting in moving a disable person between a sitting and a standing position. A method and apparatus for automatically coordinating the movements of the feet, lower-leg, thigh, seat and back, including the initial pivotal raising of the lower-leg and foot followed by a reversal of direction as the upper-leg and back commence pivotal movement to achieve preliminary alignment of the leg prior to achieving complete upright alignment of the entire body. A le...

A wheelchair frame member that includes a first metallic tube member, a second metallic tube member, and a tubular composite member. First and second end portions of the composite member extend into the first and second metallic tube members. The first and second end portions of the composite members are secured to inner surfaces of the first and second metallic tube members. The end portions of the tubular composite members may be connected to the inner surfaces of the metallic tube members in ...

A wheelchair having a chassis formed from a flat plate folded to define a lower chassis, a chassis back, and an upper chassis. The lower and the upper chassis each have a pair of elongated substantially parallel arms that extend from respective land portions of the chassis. The arms define openings in distal portions for receiving caster wheels. Drive wheels connect to axle mounts that are selectively positioned for track, camber, and height, which axle mounts connect to the chassis back or to t...

A wheelchair is capable of radiographing with the wheelchair as is by using a general radiographic device, without a need to switch to a different chair. The wheelchair includes a seat portion, a backrest portion provided with upper frame bodies mounted approximately perpendicular to the seat portion and a main body detachably mounted to the upper frame bodies transversely of the upper frame bodies, holding portions installed consecutively to the upper frame bodies, and wheels. The upper frame b...

A wheelchair having adjustability to suit several body sizes and deformities in that the width of the seat and back rest panels may be adjusted, the height of the seat and arm rests may be adjusted independently of one another, and the length of the seat may be adjusted.

A wheelchair is disclosed that comprises a drive system that includes typically two input members carried for oscillatory movement on a frame of the wheelchair. A transmission is system disposed to mechanically interconnect each input member to a respective main ground-engaging wheel of the wheelchair. The transmission system is configured such that oscillatory movement of the input member causes rotational movement of the wheel, thereby enabling a user of the wheelchair to propel it by applying...