Abstract: A positioning mechanism of a bed is disclosed. In one such embodiment, a bed can comprise an undercarriage frame, a patient surface frame, a plurality of lifters, and at least one load cell in communication with the patient surface frame. Such a load cell can be adapted to communicate a signal associated with a force exerted from the patient surface frame. The force exerted from the patient surface frame is perpendicular to the load cell when the patient surface frame is oblique to the undercarriage frame.

Abstract: A positioning mechanism of a bed comprising height adjustable lifters that are mounted between the undercarriage and patient surface frame. The first lifter is arranged so that its axis intersects the longitudinal axis of the frame. The first lifter is connected to frame oscillatingly around the longitudinal axis of the frame and in a sliding way in the direction of the longitudinal axis of the frame. The second and the third lifters are interconnected with an arm, oriented transversally to the longitudinal axis. The arm is oscillatingly connected to the frame and is connected at one end to the second lifter both oscillatingly around an axis, in parallel with the longitudinal axis of the frame and in a sliding way transversally to the frame. The other end the arm is connected to the third lifter, oscillatingly around the axis, in parallel with the longitudinal axis of the frame.

Abstract: A positioning mechanism of a bed is disclosed. In one such embodiment, a bed can comprise an undercarriage frame, a patient surface frame, a plurality of lifters, and at least one load cell in communication with the patient surface frame. Such a load cell can be adapted to communicate a signal associated with a force exerted from the patient surface frame. The force exerted from the patient surface frame is perpendicular to the load cell when the patient surface frame is oblique to the undercarriage frame.

Abstract: A positioning mechanism of a bed comprising height adjustable lifters (1, 2, 3) that are mounted on the undercarriage (4) and connected to the patient surface frame (5). The first lifter (1) is arranged that its axis intersects the longitudinal axis (6) of the frame (5) and the said lifter (1) is connected to frame (5) oscillatingly around the longitudinal axis (6) of the frame (5) and in a sliding way in the direction of the longitudinal axis (6) of the frame (5). The second lifter (2) and the third lifter (2) are interconnected with an arm (10), oriented transversally to the longitudinal axis (6). The arm (10) is oscillatingly connected to the frame (5) and is connected at one end to the second lifter (2) both oscillatingly around an axis, in parallel with the longitudinal axis (6) of the frame (5) and in a sliding way transversally to the frame (5). At the other end the arm (10) is connected to the third lifter (3), oscillatingly around the axis, in parallel with the longitudinal axis (6) of the frame (5).