Patent ID: 7278653

Claim:
A wheelchair, particularly an electric wheelchair, comprising: a frame including at least one inclined telescopically adjustable member, said inclined telescopically adjustable member inclined upwards in a front-to-back direction, at least one steerable wheel mounted to said inclined telescopically adjustable member by a mounting means, said at least one steerable wheel being rotatable about a horizontal axis of rotation, said mounting means being pivotal about a pivot axis extending relative to said at least one inclined telescopically adjustable member, at least one non-steerable adjustable wheel that is connected to the frame at a wheelbase location, and a seat which is fastened to the frame, wherein the seat has a backrest, wherein the mounting means has means for adjusting the distance between the horizontal axis of rotation and the frame at a respective telescoping of said inclined telescopically adjustable member, to adjust the pivot axis to be substantially vertical.