Wheelchair with four wheel independent suspension and modular seating

Abstract

This invention provides a wheelchair with four-wheel independent suspension and modular seating, allowing for customized seat selection and a variable ride. It includes a chair assembly, a chassis assembly and a suspension assembly. The chair assembly includes a seat; a seat mount; a seat angle adjuster; and a pillar. The chassis assembly includes a chassis; and a handle assembly. The suspension assembly incudes a forward suspension assembly and a rear suspension assembly. In another embodiment, the wheelchair includes a chair assembly with handles, a main cross beam and a suspension spring assembly.

1 . (canceled) 
     
     
         2 . A suspension assembly comprising:
 a front suspension arm attached to a support portion at a suspension arm mounting point, and attached to a front wheel hub;   a front shock absorber attached to the front suspension arm at a front shock-arm mounting point, and attached to the support portion at a front shock-support mounting point, wherein the suspension arm mounting point is distinct from the front shock-support mounting point;   a rear suspension arm attached to the support portion at the suspension arm mounting point, and attached to a rear wheel hub;   a rear shock absorber attached to the rear suspension arm at a rear shock-arm mounting point and attached to the support portion at a rear shock-support mounting point, and wherein the rear shock-arm mounting point is distinct from the suspension arm mounting point.   
     
     
         3 . The system of  claim 2 , wherein the rear shock-support mounting point is distinct from the front shock-support mounting point.