Patent ID: 7641211

Claim:
A transportation apparatus for transporting an invalid onto a raised surface, the transportation apparatus comprising: a) a seat portion, wherein the seat portion comprises a first and second spaced slide rails, the first and second slide rails being adapted to slide the seat portion a distance equivalent to at least 100% of the length of the seat portion; b) a leg support pivotably connected to the seat portion; c) at least one middle leg depending downwardly from the seat portion; d) at least one rear leg depending downwardly from the seat portion; e) at least one middle wheel connected to the middle leg, the middle wheel defining a middle rotation axis; f) at least one rear wheel connected to the rear leg, the rear wheel defining a rear rotation axis; and g) at least one front wheel operatively connected to the leg support; wherein the middle leg is adapted to vertically move the middle wheel, and the rear leg is adapted to vertically move the rear wheel; and wherein the seat portion is adapted for movement in a substantially horizontal direction in relation to the rear rotation axis or the middle rotation axis.