Patent ID: 7117967

Claim:
A wheel chair drive apparatus comprising: a frame having a wheel mount, a battery mount, and a control shaft mount; a drive wheel having an axle; a drive motor incorporated within said drive wheel; a battery in operative communication with said drive motor via a detachable jack; a battery housing dimensioned to mount in said battery mount of said frame, said battery housing having a handle; a control shaft pivotably mounted on said control shaft mount, said control shaft having at least a stow position, and operating position, a user entry position and a table use position; a caster lever pivotably mounted to said frame, said caster lever having at least a rolling position and an engaged position, said caster lever being disposed to engage a receiving seat on a wheel chair; said caster lever having a wheel mounted thereon, said wheel being disposed to rollingly support said wheel chair drive apparatus when said caster lever is in said rolling position.