초록 ▼

A wheelchair has a plurality of central wheels which can be either power or manually driven, at least one rear caster wheel, and at least one resiliently biased ground engaging front wheel having a multiple suspension assembly. The wheelchair has improved tracking since the front wheel is maintained

A wheelchair has a plurality of central wheels which can be either power or manually driven, at least one rear caster wheel, and at least one resiliently biased ground engaging front wheel having a multiple suspension assembly. The wheelchair has improved tracking since the front wheel is maintained on the ground even on undulating, bumpy, or irregular surfaces. The wheelchair also has improved stability since the front ground engaging wheel also acts as a resiliently biased anti-tip wheel.

대표청구항 ▼

1. A wheelchair, comprising:a frame; a seat assembly operatively connected to said frame; a plurality of drive wheels operatively connected to said frame; at least one rear caster wheel operatively connected to said frame; and at least one front wheel assembly resiliently and pivotally connected to

1. A wheelchair, comprising:a frame; a seat assembly operatively connected to said frame; a plurality of drive wheels operatively connected to said frame; at least one rear caster wheel operatively connected to said frame; and at least one front wheel assembly resiliently and pivotally connected to said frame by a multiple compression range suspension assembly having at least two biasing members, said multiple compression range suspension assembly adapted to biasly urge said front wheel into contact with a surface, wherein each said biasing member of said suspension assembly has a compression range which can be separate from or can overlap the at least one other biasing member, wherein said suspension assembly has an upper housing containing a substantially vertically extending elongated slot therein, and wherein a pin connects said suspension assembly to said wheelchair frame, and wherein said pin extends through and is movable substantially vertically upwardly and downwardly within said slot.