Wheelchair Propulsion System

A wheelchair, comprising:

• a wheelchair body;
• a pair of drive wheels rotatably secured to said wheelchair body;
• and
• a propulsion mechanism operable to independently drive each of said pair of drive wheels rotatably secured to said wheelchair body, said propulsion mechanism including:
• a pair of cranks each rotatably coupled to said wheelchair body, said first of said pair of cranks adapted to operate independently from operation of said second of said pair of cranks;
• a first pair of drive members, wherein one of said first pair of drive members operably coupled to each of said pair of cranks;
• a second pair of drive members rotatably coupled to said wheelchair body, wherein one of said second pair of drive members operatively coupled to each of said first pair of drive members with a first circuitous member;
• a third pair of drive members rotatably coupled to said wheelchair body, wherein one said third pair of drive members disposed coaxially and adjacent to each of said second pair of drive members;
• a fourth pair of drive members, wherein one of said fourth pair of drive members coaxially coupled to each said pair of drive wheels, wherein one of said third pair of drive members operatively coupled to each of said fourth pair of drive members with a second circuitous member.