Abstract: The invention relates to a lifting cushion (20) that is wedge-shaped and is formed by a top part (1) and a bottom part (2) with connecting walls (3-33), and which is arranged to be tillable with fluid, e.g., air, gas or liquid. The top part (1) and the bottom part (2) are joined to a common unit (21) in the forward edge (4) of the cushion, and said forward edge (4) is extended in relation to the front wall (3) of the lifting cushion and forms thereby a thin fore extended part (21) in front of said front wall (3) and that is active during the insertion but passive during operation. Said fore part (21) of the wedge-shaped lifting cushion is arranged in such a way that when the lifting cushion (20) is filled with fluid, the fore extended top part (1) and the bottom part (2) are expanded without preventing the fore wall (3) of the lifting cushion from smoothing out and forming the fore part of the lifting cushion in a filled state.

Abstract: The invention relates to a lifting cushion (20) that is wedge-shaped and is formed by a top part (1) and a bottom part (2) with connecting walls (3-33), and which is arranged to be tillable with fluid, e.g., air, gas or liquid. The top part (1) and the bottom part (2) are joined to a common unit (21) in the forward edge (4) of the cushion, and said forward edge (4) is extended in relation to the front wall (3) of the lifting cushion and forms thereby a thin fore extended part (21) in front of said front wall (3) and that is active during the insertion but passive during operation. Said fore part (21) of the wedge-shaped lifting cushion is arranged in such a way that when the lifting cushion (20) is filled with fluid, the fore extended top part (1) and the bottom part (2) are expanded without preventing the fore wall (3) of the lifting cushion from smoothing out and forming the fore part of the lifting cushion in a filled state.

Abstract: The invention relates to an arrangement (1) for a wheelchair drive ring (2) that is separate from the wheel of the wheelchair and exhibits a drive-actuating surface (5) facing in a direction outwards from the wheelchair wheel. In accordance with the invention, an upper concave drive-actuating surface (6) of the drive ring (2), which can be attached separately to the rim of the wheelchair wheel, is transformed directly into a lower convex drive-actuating surface. The aforementioned lower convex drive-actuating surface (7) is transformed into a circular gripping part (9) on the underside of the outward-facing drive-actuating surface (5). The aforementioned upper concave drive-actuating surface (6) and the gripping part are transformed jointly into a downward-angled finger guard extending in towards the center of the wheel. Friction-increasing gripping material (100) is provided only on the upper concave drive-actuating surface (6) of the drive ring (2).