Abstract: Disclosed is a method for preparing vinyl chloride by catalytic thermal cracking of 1,2-dichloroethane, in which method the heat required for the thermal cracking is supplied via a liquid or condensing heat transfer medium, wherein, the heat transfer medium is heated at least in part by means of waste heat from a plant for combusting liquid and/or gaseous residues of a chemical plant. The invention also relates to a plant for preparing vinyl chloride by catalytic thermal cracking of 1,2-dichloroethane. The heat required for thermal cracking can be obtained from cheaply available waste heat. For example, it is possible to temporarily heat the heat transfer medium exclusively by means of the second heating device operated by waste heat, wherein said waste heat can, for example, be waste heat from a plant for preparing vinyl chloride.

Abstract: The invention is directed towards a device for adjusting the height or the distance or the inclination of an object in relation to a structure to which the object is displaceably or pivotably connected, in particular for adjusting the inclination of a backrest of a pushchair in relation to the chassis thereof, comprising a pulling means which has at least one length-adjustable strand which is connected in the region of one of its ends to the structure and in the region of its other end to the object.

Abstract: A handle assembly for a baby carriage or stroller, the handle assembly comprising a handle (3) connected to an elastic element disposed in a tube member (2) of a chassis, and comprising an annular, double-connected body having a central through-opening and having a cross section in a first state smaller than an inner cross section of the tube member (2), and in a second state can be pressed outward to wedge within the tube member (2), wherein the elastic element is provided with parallel end faces and is disposed between upper (18) and lower rigid perforated elements (19) defining a spacing therebetween and being adjustable in an axial direction to exert axial pressure on end faces of the elastic element between the perforated elements (18,19) and to compressively deform the elastic element in an axial direction, wherein said elastic element avoids axial compressive deformation by stretching in a radial direction, and wherein the lower perforated element (19) is coupled to a traction element, and a bottom edg

Abstract: The invention relates to a collapsible frame (1;31;51) for a pushchair, comprising a chassis (4; 34; 54) with several wheels (2, 3; 32, 33; 52, 53, 53?), a frame (5; 35; 55), supporting the body (6), in particular a seat, shell, pouch or similar for a child, and a folding mechanism (7; 37; 57), arranged between the same, to change the separation of the support frame (5; 35; 55) of the body (6) from the chassis 4; 34; 54), whereby the folding mechanism (7; 37; 57) comprises at least two parallel arms (18, 19; 40, 41; 66, 67), connected in the style of a parallelogram link to the chassis (4; 34; 54) at one side and the to the support frame (5; 35; 55) on the other side. According to the invention, the connecting line between the joints points (39: 65) of both arms (18, 19; 40, 41; 66, 67) of a pair on the chassis (4; 34; 54) include a greater angle with the horizontal contact plane of the wheels (2, 3; 32, 33; 52, 53, 53?) than with the verticals running perpendicular to that plane.

Abstract: The invention is directed to a pram or buggy with a frame, a plurality of wheels, an upper part and at least one height- and/or rotationally-adjustable handle (3), wherein the handle/the handles is/are coupled or connected to at least one element which enters into a (respective) tube (2) of the frame and the cross section of which is (slightly) smaller in a first state than the internal cross section of the tube and, in a second state, can be at least partially pressed or spread outwards in order to be securely gripped within the tube.

Abstract: The invention is directed to a collapsible frame (1; 31; 51) for a pushchair, comprising a chassis (4; 34; 54) with several wheels (2, 3; 32, 33; 52, 53, 53?), a frame (5; 35; 55) supporting the body (6), particularly a seat, shell, pouch or similar for a child, and a folding mechanism (7; 37; 57) arranged betweem the same, to change the separation of the support frame (5; 35; 55) of the body (6) from the chassis (4; 34; 54), whereby the folding mechanism (7; 37; 57) comprises at least two parallel arms (18, 19; 40, 41; 66, 67) connected in the style of a parallelogram link to the chassis (4; 34; 54), at one side and the to the support frame (5; 35; 55), on the other side. According to the invention, the connecting line between the joints points of (39: 65) of both arms (18, 19; 40, 41; 66, 67) of a pair on the chassis (4; 34; 54) include a greater angle with the horizontal contact plane of the wheels (2, 3; 32, 33; 52, 53, 53?) than with the verticals running perpendicular to that plane.