Wheelchair

Claim 2

A wheelchair having a pair of opposed side frames each including portions which define front and rear ends thereof, a seat removably mounted on the side frames, wheel means rotatably mounted on each of said side frames, first brace means pivotally mounted at each of its opposite ends to the front ends of said side frames and being collapsible intermediate its ends, second brace means pivotally connected at its opposite ends to the rear ends of said side frames and also collapsible intermediate its ends, third brace means pivotally connected at its opposite ends to the rear ends of said side frames and being collapsible intermediate its ends, said third brace means being disposed at an elevation of at least equal to that of said seat means, said first and second brace means being pivotally mounted to the side frames for collapsing movement in a generally horizontal direction and the third brace means being collapsible in a direction generally perpendicular to the direction in which said first and second brace means collapses whereby said braces, when uncollapsed, support said side frames in a spaced apart when said seat has been removed, said first and second brace means lying respectively along the front and rear margins of said wheelchair when extended, said seat including a relatively rigid frame having lateral sides each of which includes means for being releasably mounted on one of said side frames, the width of said seat means being substantially equal to the distance between said side frames when said brace means are fully extended, said seat preventing the collapse of said first second and third brace means when mounted on said side frames, said seat means also having a central portion which is removably mounted on said seat frame to provide a central opening through said seat without affecting the rigidity of the seat frame, said second brace means being disposed at an elevation at least equal to that of the lower edge of said seat means, the area below said seat means being otherwise unobstructed to permit said wheelchair to be backed over a toilet bowl.

Claim 3

A wheelchair having a pair of opposed side frames each including portions which define front and rear ends thereof, wheel means rotatably mounted on each of said side frames, first brace means pivotally mounted at each of its opposite ends to the front ends of said side frames and being collapsible intermediate its ends, second brace means pivotally connected at its opposite ends to the rear ends of said side frames and having portions pivotally connected for collapsing in the same direction as said first brace means, third brace means pivotally connected at its opposite ends to the rear ends of said side frames and also collapsible intermediate its ends, said third brace means being disposed at an elevation of at least equal to that of said seat means, said first and second brace means being pivotally mounted to the side frames for collapsing movement in a generally horizontal direction and said third brace means being collapsible in a direction generally vertical, said first and second brace means lying respectively along the front and rear margins of said wheelchair when extended, seat means including a relatively rigid frame, said seat means having lateral sides each of which includes means for being releasably mounted on one of said side frames, the width of said seat means being substantially equal to the distance between said side frames when said brace means are fully extended, said seat means preventing the collapse of said first second and third brace means when mounted on said side frames, said seat means also having a central portion which is removably mounted on said frame to provide a central opening through said seat, said second brace means being disposed at an elevation at least equal to that of the lower edge of said seat means, the area below said seat means being otherwise unobstructed to permit said wheelchair to be backed over a toilet bowl, said seat means including a pair of side secitons affixed to said frame, and strut means disposed beneath one of said side sections and, interconnecting said first and second brace means whereby the same will move in unison and in the same direction.

Claim 4

A wheelchair having a pair of opposed side frames each including portions which define front and rear ends thereof, wheel means rotatably mounted on each of said side frames, first brace means pivotally mounted at each of its opposite ends to the front ends of said side frames and being collapsible intermediate its ends, second brace means pivotally connected at its opposite ends to the rear ends of said side frames and having portions pivotally connected for collapsing in the same direction as said first brace means, third brace means pivotally connected at its opposite ends to the rear ends of said side frames and also collapsible intermediate its ends, said third brace means being disposed at an elevation of at least equal to that of said seat means, said first and second brace means being pivotally mounted to the side frames for collapsing movement in a generally horizontal direction and said third brace means being collapsible in a direction generally vertical, said first and second brace means lying respectively along the front and rear margins of said wheelchair when extended, seat means including a relatively rigid frame, said seat means having lateral sides each of which includes means for being releasably mounted on one of said side frames, the width of said seat means being substantially equal to the distance between said side frames when said brace means are fully extended, said seat means preventing the collapse of said first second and third brace means when mounted on said side frames, said seat means also having a central portion which is removably mounted on said frame to provide a central opening through said seat, said second brace means being disposed at an elevation at least equal to that of the lower edge of said seat means, the area below said seat means being otherwise unobstructed to permit said wheelchair to be backed over a toilet bowl, said seat means including a pair of side secitons affixed to said frame, and strut means disposed beneath one of said side sections and, interconnecting said first and second brace means whereby the same will move in unison and in the same direction.

Claim 5

The wheelchair set forth in claim 2 wherein said third brace means includes first and second brace members connected at their opposite ends for pivotal movement about a generally horizontal axis and pivotally interconnected at their opposite ends, one of said brace members having stop means where engaging the other member to prevent downward pivotal movement of said members past the point where they are in general alignment.