Abstract: A system for fastening a rail to a solid foundation, and a method for renovating a rail-fastening point. The system and the method allow a fastening point for a rail to be easily and economically renovated in such a way that a permanently reliable function of the renovated fastening is then ensured again while the worn support section remains. The system for fastening a rail to a solid ground foundation includes: a layer formed by a compensating mass applied to the support section; a base plate resting on the layer and extending over the support section, upon which the rail is supported in the finally installed state; a spring element for exerting a resilient elastic retention force on the rail; and a clamping element that can be anchored in the solid foundation for clamping the spring element.

Abstract: A profiled element for damping sound vibrations on rail lines including a first main surface, which is designed and dimensioned such that it can be attached as a support surface to sections of the rail web without having to provide an adhesive layer, wherein the profiled element further has at least one recess on a front surface located opposite of the support surface, wherein the at least one recess in the front surface is designed for the positive engagement of an elastic fixing element for fixing the profiled element against the rail web, and at least one widened region of the profiled element in the region of the front surface, said widened region present in the lower region of the front surface in an installed position.

Abstract: A system for fastening a rail to a solid foundation, and a method for renovating a rail-fastening point. The system and the method allow a fastening point for a rail to be easily and economically renovated in such a way that a permanently reliable function of the renovated fastening is then ensured again while the worn support section remains. The system for fastening a rail to a solid ground foundation includes: a layer formed by a compensating mass applied to the support section; a base plate resting on the layer and extending over the support section, upon which the rail is supported in the finally installed state; a spring element for exerting a resilient elastic retention force on the rail; and a clamping element that can be anchored in the solid foundation for clamping the spring element.

Abstract: A profiled element for damping sound vibrations on rail lines including a first main surface, which is designed and dimensioned such that it can be attached as a support surface to sections of the rail web without having to provide an adhesive layer, wherein the profiled element further has at least one recess on a front surface located opposite of the support surface, wherein the at least one recess in the front surface is designed for the positive engagement of an elastic fixing element for fixing the profiled element against the rail web, and at least one widened region of the profiled element in the region of the front surface, said widened region present in the lower region of the front surface in an installed position.

Abstract: To provide directionally dependent attenuation for an optical information transmission link using simple means without the use of an active component, it is proposed to couple two optical waveguides (1, 2) having different core diameters to one another, the core diameter of the second fiber (2) being at least six times greater than the core diameter of the first fiber (1). In this manner, it is achieved that the conduction of light signals in a predefined direction is attenuated by at least the factor 30, while, on the other hand, the light propagating in the reverse direction, is attenuated very slightly.

Abstract: To provide directionally dependent attenuation for an optical information transmission link using simple means without the use of an active component, it is proposed to couple two optical waveguides (1, 2) having different core diameters to one another, the core diameter of the second fiber (2) being at least six times greater than the core diameter of the first fiber (1). In this manner, it is achieved that the conduction of light signals in a predefined direction is attenuated by at least the factor 30, while, on the other hand, the light propagating in the reverse direction, is attenuated very slightly.