Abstract: A coupling device for coupling a mattress to a mattress base comprises a lower coupling element, which can be attached to the mattress base, and an upper coupling element, which can be attached to the mattress, which lower coupling element and upper coupling element can be mechanically connected to one another. To facilitate the making of said connection, said upper coupling element and lower coupling element can be coupled in various positions which are offset with respect to one another. Furthermore, upper coupling element and lower coupling element can also be coupled electrically.

Abstract: A device for supporting a human body is provided having parts which are movable relative to each other including a frame; a rotatable end connected thereto; a base element which is connected to the rotatable end; an adjusting element which cooperates with a frame section; and drive means for adjusting the adjusting element relative to the base element, the base element being an elongated section running parallel to at least one of the parts of the frame and the rotatable end and the adjusting element including first and second arms which are movable by means of the drive means between a position in which it extends along or is accommodated in the section and a position in which it projects relative to the section, which arm can be swivelled about a fixed hinge point of the frame and which forms part of a link mechanism with two arms, of which the second arm is coupled with play in a pivoting manner to a sliding member which can be moved relative to the frame, and which second arm has a part which can cooperat