Abstract: An exemplary seat having seat connection mechanism for attaching the seat to a wheelchair includes a seat frame and a backrest. The backrest is pivotably connected to the seat frame through a pivoting mechanism. The seat further includes a biasing member connected to the backrest at a first connection point and a second connection point near the seat frame. The second connection point and the pivoting mechanism are spaced apart from one another by a distance C. The seat further includes an adjustment mechanism adapted for changing the distance C. The second connection point may be connected to a guide arm, such that the position of the second connection point is adjustable by sliding the second connection point along the guide arm, thus making the distance C adjustable.

Abstract: An articulated joint pivotably connects first leg and second legs. A first joint member attaches to the first leg. A second joint member attaches to the second leg. The joint members have facing abutment surfaces. Each joint member has a shaft opening receives a shaft for connecting the joint members, such that the legs may pivot between an open and a closed position. A clamping means releasably presses abutment surfaces of the joint members toward each other. A locking means releasably positively secures the joint members in at least the open position. Each joint member has a first aperture. The first aperture is radially offset from the shaft opening. The first apertures of each joint member are coaxially arranged in at least the open position. A device for supporting a person is included.

Abstract: An articulated joint pivotably connects first leg and second legs. A first joint member attaches to the first leg. A second joint member attaches to the second leg. The joint members have facing abutment surfaces. Each joint member has a shaft opening receives a shaft for connecting the joint members, such that the legs may pivot between an open and a closed position. A clamping means releasably presses abutment surfaces of the joint members toward each other. A locking means releasably positively secures the joint members in at least the open position. Each joint member has a first aperture. The first aperture is radially offset from the shaft opening. The first apertures of each joint member are coaxially arranged in at least the open position. A device for supporting a person is included.

Abstract: A wheelchair comprising a chassis, which has a lower chassis section pivotally connected to an upper chassis section, such that the upper chassis section can pivot in relation to the lower chassis section about a substantially horizontal axis; where said lower section comprises two substantially parallel load carrying members, oriented in a direction parallel to the intended travelling direction of the wheelchair; where the load carrying members are spaced in a direction perpendicular to the travelling direction by at least one transverse member; where the rear wheels can be detachably mounted where the transverse member intersects each of the load carrying members; and where close to, or as a part of, the mechanism pivotally connecting the upper and lower section, front wheels can be attached, said wheel mounting being pivotable about a vertical axle; where a seat can be slidingly attached to the upper chassis section, and the seat further can be pivoted about a horizontal axis.

Abstract: An adjustable chair construction is described which is particular in that the backrest is linked to the seat by means of at least one hinge construction, where said hinge construction on the seat comprises at least one first projecting member (23) having a curved or linear top section on which top section teeth are arranged, and on the back rest at least one second projecting member (82) having a curved or linear top section on which top section teeth are arranged, such that the teeth on one section mesh with the teeth on the other section, and that at least one connecting member (100) being pivotable fastened to the first and second projecting members (23, 82) maintains the teeth of the curved sections in meshed relationship.

Abstract: The present invention relates to the art of personal mobility vehicles, particularly vehicles for the physically impaired. Particular application is found in children's wheelchairs which grow and expand with the child. However, it is to be appreciated that the present invention may also be applicable to wheelchairs for adults and may be utilized to custom fit wheelchairs to adults, may enable the chair to be utilized by adults or children of different sizes, or may be applicable to other vehicles.