A wheelchair has {TAIL ~ a plurality} of {HEAD ~ 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 
A wheelchair has { TAIL ~ a plurality } of { HEAD ~ 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
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH