Adjustable wheelchair

A adjustable wheelchair comprising:

• a supporting frame having a front, a rear, and a pair of sides defining a seat portion therebetween;
• a pair of main wheels rotatably mounted to said frame, and a pair of secondary wheels rotatably mounted to said frame for pivotal movement with respect thereto;
• said frame including means for continuous adjustment of the width of said seat portion over a defined range;
• seat means fastened to said seat portion for receiving a human in a seated position;
• a back portion extendng genreally vertically from said frame, and means for collapsing said back portion to a generally horizontal orientation;
• a pair of arm rests, said collapsing means including means for detachably securing said arm rests to said frame;
• and means for rotating said arm rests vertically for collapsing said back portion to said generally horizontal orientation.

An adjustable wheelchair providing improved frontal access for small children, the wheelchair comprising:

• a supporting frame having a front, a rear, and a pair of sides defining a seat portion therebetween;
• a pair of main wheels rotatably mounted so said frame, and a pair of secondary wheels rotatably mounted to said frame for pivotal movement with respect thereto;
• seat means fastened to said seat portion for receiving a human in a seated position, wherein said frame sides have respective side members extending forwardly of said seat portion, the space to the front of said and between said side members defining the route for frontal access;
• and
• support means mounted to said frame for supporting the feet of a human, wherein said foot support means includes a pair foot-tubes with respective depending footplates rotatably mounted to said frame side members for pivotal movement about the respective axes of said foot-tubes, between a first position wherein said footplates extend outward from said frame, and a second position wherein said footplates are oriented toward said frame, for allowing frontal access to said seat portion when in said first position without substantial interference from said footplates.

An adjustable wheelchair comprising:

• a supporting frame having a front, a rear, and a pair of sides defining a seat portion therebetween;
• a pair of main wheels rotatably mounted to said frame, and a pair of secondary wheels rotatably mounted to said frame for pivotal movement with respect thereto;
• anti-tip means on the rear of said frame for maintaining said wheelchair in an upright position on said wheels when said chair is subjected to front-rear tippng forces,
• wherein said anti-tip means includes an angled member extending from said frame and at least one wheel rotatably mounted to one end of said member for counteracting the tipping motion of said chair, and
• wherein said anti-tip means includes means for pivoting said angled member between a first position wherein said member extends from the rear of said frame and a second position wherein said member is substantially within said frame.

A width-adjustable children's vertically collapsible wheelchair system providing improved frontal access, the system comprising:

• a supporting tubular frame having a front, a rear, a pair of sides defining a seat portion therebeteen, and a plurality of corresponding pairs of crossbars extending from the respective frame sides;
• a pair of main wheels rotatably mounted to said frame, and a pair of secondary wheels rotatably mounted to said frame for pivotal movement with respect thereto;
• said frame including means for continuous adjustment of the width of said seat portion over a defined range, said width adjusting means includes split clamp means for adjustably joining each of said corresponding pair of crossbars;
• a back portion extending generally vertically from said fame, means for collapsing said back portion to a generally horizontal orientation;
• a pair of arm rests rotatably connected to said back portion, said collapsing means including means for detachably securing said arm rests to said frame;
• and
• supporting means mounted to said frame for supporting the feet of a human, including a pair of footplates swingably mounted to said frame for pivotal movement between a first position wherein said footplates extend outward from frame, and a second position wherein said footplates are oriented toward said frame, first position allowing frontal access to said seat portion without substantial interference from said footplates, and said second position providing foot support for the seated patient.