초록 ▼

A wheelchair frame is uniquely designed to permit folding of the chair in such a manner that the left and right wheels of the wheelchair lie in the same vertical planes as the left and right wheelchair frame portions supporting the seats and arm rests so that in effect a narrower folded configuratio

A wheelchair frame is uniquely designed to permit folding of the chair in such a manner that the left and right wheels of the wheelchair lie in the same vertical planes as the left and right wheelchair frame portions supporting the seats and arm rests so that in effect a narrower folded configuration results for a given width wheelchair seat when in unfolded position as compared to conventional wheelchairs.

대표청구항 ▼

A narrow frame wheelchair having a seat, left rear and front wheels and right rear and front wheels, including in combination: (a) left and right seat support frame tubes defining therebetween the width of said seat when said wheelchair is in unfolded position; (b) left and right lower frame tube me

A narrow frame wheelchair having a seat, left rear and front wheels and right rear and front wheels, including in combination: (a) left and right seat support frame tubes defining therebetween the width of said seat when said wheelchair is in unfolded position; (b) left and right lower frame tube means connected between the left rear and front wheels and right rear and front wheels respectively, such that the left rear wheel and left front wheel are in the same vertical plane as the left seat support tube and the right rear wheel and right front wheel are in the same vertical plane as the right seat support frame tube; (c) first and second crossing tubes having their opposite ends respectively connected to the left lower frame tube means and right seat support frame tube and the right lower frame tube means and left seat support tube; and (d) pivot means connected to said crossing tubes to pivot the tubes about a pivot axis spaced vertically above the cross-over point of said tubes a given distance, said given distance being such that said crossing tubes can be pivoted towards a vertical parallel relationship by moving said seat support frame tubes towards each other and lower frame tube means simultaneously towards each other until said lower frame tube means are in side-by-side engaging relationship to fold said wheelchair, and whereby said left rear and left front wheels are still in the same vertical plane as said left seat support tube and said right rear and right front wheels are still in the same vertical plane at said right seat support tube when said wheelchair is folded to result in a minimum overall width for the folded wheelchair for a given seat width when the wheelchair is unfolded.