Abstract: A propulsion apparatus (20) which can be mounted to a wheel (8) (or integrally formed therewith) of a vehicle, for example a wheelchair. The propulsion apparatus (20) has a first portion which can be statically attached to either a rim of the wheel (8) or structural member which is rigidly attached to the wheel (8) projects therefrom. The propulsion apparatus (20) also has a second portion (23), which is pivotal about the rotational axis of the wheel (8). Furthermore, the propulsion apparatus (20) comprises coupling means which are interposed between the first and second portions so that when the second portion (23) is rotated about the axis of the wheel (8) it causes the first portion, and therefore also the wheel (8), to rotate.

Abstract: A propulsion apparatus (20) which can be mounted to a wheel (8) (or integrally formed therewith) of a vehicle, for example a wheelchair. The propulsion apparatus (20) has a first portion which can be statically attached to either a rim of the wheel (8) or structural member which is rigidly attached to the wheel (8) projects therefrom. The propulsion apparatus (20) also has a second portion (23), which is pivotal about the rotational axis of the wheel (8). Furthermore, the propulsion apparatus (20) comprises coupling means which are interposed between the first and second portions so that when the second portion (23) is rotated about the axis of the wheel (8) it causes the first portion, and therefore also the wheel (8), to rotate.