Adjustable wheelchair

Abstract

A wheelchair having a seat frame and at least one side frame is provided. The seat frame includes, for example, a first distal portion having a first releasable attachment and a second distal portion having a second releasable attachment. The at least one side frame includes, for example, a first portion having a substantially horizontal section and second portion having a substantially vertical section. The first releasable attachment of the seat frame is attachable to the side frame substantially horizontal section at a plurality of positions and the second releasable attachment of the seat frame is attachable to the side frame substantially vertical section at a plurality of positions to adjust the position of seat frame.

1 . A wheelchair comprising: 
 a seat frame having first and second distal portions, the first distal portion comprising a first releasable attachment and the second distal portion comprising a second releasable attachment;    at least one side frame comprising a first portion having a substantially horizontal section and second portion having a substantially vertical section; and    wherein the first releasable attachment of the seat frame is attachable to the side frame substantially horizontal section at a plurality of positions and the second releasable attachment of the seat frame is attachable to the side frame substantially vertical section at a plurality of positions to adjust at least a portion of the seat frame's height above a floor.    
     
     
         2 . The wheelchair of  claim 1  wherein the first releasable attachment comprises at least one releasable clamp.  
     
     
         3 . The wheelchair of  claim 1  wherein the second releasable attachment comprises at least one releasable clamp.  
     
     
         4 . The wheelchair of  claim 1  wherein the first and second releasable attachments each comprise at least one releasable clamp.  
     
     
         5 . The wheelchair of  claim 1  wherein the side frame comprises third portion for releasably attaching at least one wing or bumper assembly.  
     
     
         6 . The wheelchair of  claim 5  wherein the third portion comprises mounting projection.  
     
     
         7 . The wheelchair of  claim 5  wherein the third portion comprises a mounting boss for attaching a wing or bumper assembly.  
     
     
         8 . The wheelchair of  claim 5  wherein the third portion comprises a substantially cylindrical shape.  
     
     
         9 . The wheelchair of  claim 5  wherein the third portion comprises a wing or bumper clamp receiving surface.  
     
     
         10 . The wheelchair of  claim 1  wherein the side frame comprises a fourth portion having a substantially horizontal section.  
     
     
         11 . The wheelchair of  claim 10  wherein the fourth portion substantially horizontal section comprises an axle tube attachment receiving surface.  
     
     
         12 . The wheelchair of  claim 1  further comprising an axle tube and an axle tube attachment and wherein the side frame comprises a fourth portion having a substantially horizontal section having an axle tube attachment receiving surface.  
     
     
         13 . The wheelchair of  claim 12  wherein the axle tube attachment is attachable to the axle tube attachment receiving surface at a plurality of positions that adjust a center-of-gravity of the wheelchair.  
     
     
         14 . A wheelchair comprising: 
 a seat frame comprising a substantially L-shaped portion and a backrest portion, the substantially L-shaped portion comprising a front releasable attachment assembly and a rear releasable attachment assembly;    a side frame comprising a substantially L-shaped portion having a substantially horizontal section and a substantially vertical section; and    the front releasable attachment assembly attachable to the substantially horizontal section at a plurality of positions and the rear releasable attachment assembly attachable the substantially vertical section at a plurality of positions to adjust the seat frame position.    
     
     
         15 . The wheelchair of  claim 14  wherein the front releasable attachment comprises at least one releasable clamp.  
     
     
         16 . The wheelchair of  claim 14  wherein the side frame further comprises a projecting portion.  
     
     
         17 . The wheelchair of  claim 16  further comprising a wing/bumper assembly having at least one releasable attachment assembly that attaches to the wing/bumper assembly to the projecting portion of the side frame.  
     
     
         18 . The wheelchair of  claim 16  wherein the substantially horizontal section of the side frame is between the projecting portion and the substantially vertically section of the side frame.  
     
     
         19 . A wheelchair comprising: 
 a first means for supporting at least a portion of a seat;    a second means for supporting at least a portion of a seat;    a first means for releasably attaching the first and second means for supporting and for slideably adjusting a forward portion of the first means for supporting along a forward portion of the second means for supporting; and    a second means for releasably attaching the first and second means for supporting and for slideably adjusting a rearward portion of the first means for supporting along a rearward portion of the second means for supporting.    
     
     
         20 . The wheelchair of  claim 19  wherein the first means for releasably attaching comprises a clamp.