Abstract: The invention relates to a system of a support element and at least two functional elements which can be used in the sanitary sector, with the support element being able to be coupled to each of the functional elements via a system interface and the system interface having a spigot-shaped element—at the support element side—with an outwardly biased latch element projecting out of said spigot-shaped element transversely to its longitudinal axis and the functional elements each having a tubular element corresponding to the spigot-shaped element and having a cut-out for the latch element.

Abstract: The invention relates to a system of a support element and at least two functional elements which can be used in the sanitary sector, with the support element being able to be coupled to each of the functional elements via a system interface and the system interface having a spigot-shaped element—at the support element side—with an outwardly biased latch element projecting out of said spigot-shaped element transversely to its longitudinal axis and the functional elements each having a tubular element corresponding to the spigot-shaped element and having a cut-out for the latch element.

Abstract: The invention relates to a closing system for doors having an inner rotary knob associated with an inner side which is rotationally fixedly connected to a closing element for the actuation of a latch and an outer rotary knob. The inner rotary knob is rotationally fixedly connected to a sleeve on which the closing element is rotationally fixedly arranged. The outer rotary knob is rotationally fixedly connected to a shaft which extends through the sleeve of the inner rotary knob and is rotationally fixedly connected to a coupling unit arranged in the inner rotary knob. The coupling unit is freely rotatable in a free wheel state relative to the inner rotary knob and rotationally fixedly coupled to the inner rotary knob in a driving state. Moreover, the coupling unit is connected for the changeover between the free wheel state and the driving state to a code input unit arranged in the outer rotary knob via an electrical and/or optical signal path extending through the shaft of the outer knob.

Abstract: A device for mounting a handrail element on a post for producing a stair railing and the like has bearing surfaces provided on the handrail elements, spaced in a longitudinal direction, and forming a gap, a rotary part provided on an end on the post and rotatably supported with a cylindrical part of a peripheral surface in a side of the bearing surfaces which faces the handrail element, the rotary part having a portion connected with the post by the gap, the bearing surfaces being formed on a separate structural part which is releasably connectable with the handrail element, the rotary part being formed as a separate structural part which is releasably connectable with the post.