Movable bathtub assembly

A movable bathtub assembly comprising a bathtub and a mechanism to displace it comprising at least one arm connected with a bathtub at one of its ends by means of at least one articulated joint, and connected with a base and/or a wall at the second of its ends by means of at least one articulated joint,

• wherein all arms, joints and mechanism mounting structures are arranged below an upper edge (29) of the bathtub (1) supported by its legs (7) on the base (30) and situated in the bathing position, in principle horizontally, completely inside the space defined by an 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 said arms (2, 3) from its bathing position to its vertical position,
• where the concave side of the bathtub is directed towards the place of its center in the bathing position, characterized in that it comprises two pairs of arms (2, 3), each on the opposite side of the bathtub (1), whereas each arm (2, 3) is connected at one side, via a frame (6, 50), to the base (30) and/or to the wall (36), correspondingly, by means of an articulated joint (9, 11) and is connected at the other side, via a bed (4), to the bathtub (1) by means, correspondingly, of an articulated joint (15, 16),
• 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 synchronized 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 means of a coupling element (10).