Movable bathtub assembly

A movable bathtub assembly comprising a bathtub and a mechanism to displace it comprising two pair of arms, each pair of arms on the opposite side of the bathtub (1), whereas each pair of arms (2,3) is connected at a first end, via a frame (6,50), to a base (30) and/or to a wall (36) by a first pair of articulated joints (9, 11) and is connected at a second end, via a bed (4), to the bathtub (1) by a second pair of articulated joints (15, 16),

• wherein all arms, joints and mechanism mounting structures are arranged below an upper edge (29) of the bathtub (1) supported by bathtub legs (7) on the base (30) and situated in the bathing position, about horizontally having a center, completely inside a space defined by the upper edge (29) of the bathtub (1), the base (30) and walls (36) adjacent to the bathtub (1), in such way, that the bathtub is displaced following the rotation of the two pair of arms (2, 3) from a bathing position to a vertical position, where a concave side of the bathtub faces towards the place of the center of the bathtub when in the bathing position,
• whereas the arms and the bathtub (1) form a four-bar linkage with oscillating links defining the bathtub (1) trajectory,
• wherein the movement of the arms (2, 3) is synchronised on both sides of the bathtub (1) by a stiff connection of one arm (2, 3) from the first pair to the corresponding arm (2, 3) from the second pair by a coupling element (10).