Abstract: A flame protective fabric structure (1) comprises a fabric (10) being formed with multiple yarns (20), each yarn (20) made of a fiber blend of at least a first fiber component and a second fiber component. The first fiber component comprises flame resistant viscose fibers (22) in an amount of at least 50% of the fiber blend weight and the second fiber component comprises meltable fibers (24) in an amount of at least 10% of the fiber blend weight. The fabric (10) is formed as a woven fabric with a total fractional cover factor of greater than 60% having a capability to withstand a horizontal flame exposure of 10 seconds without hole formation according to ISO 15025/14116_Index III.

Abstract: Between an optical fiber (LF11, LFB12, LFB13) and a surrounding core covering (AH11, AH12, SB13) of an optical transmission element (OE11 to OE13) there is at least one dry and compressible fixating element (FE11 to FE13), which surrounds the optical fiber totally or partially, and which exerts a defined contact pressure against the core covering and against the optical fiber for fixating the optical fiber in the longitudinal direction of the transmission element. The fixating element is further formed and positioned in such a way, that position changes of the optical fiber due to bending or elongation are possible. In this way, unallowable attenuation increases in the optical fiber due to bending or position changes can be avoided.

Abstract: Between an optical fiber (LF11, LFB12, LFB13) and a surrounding slot element (AH11, AH12, SB13) of an optical transmission element (OE11 to OE13) there is at least one dry and compressible fixating element (FE11 to FE13), which surrounds the optical fiber totally or partially, and which exerts a defined contact pressure against the slot element and against the optical fiber for fixating the optical fiber in the longitudinal direction of the transmission element. The fixating element is further formed and positioned in such a way, that position changes of the optical fiber due to bending or elongation are possible. In this way, unallowable attenuation increases in the optical fiber due to bending or position changes can be avoided.

Abstract: Between an optical fiber (LF11, LFB12, LFB13) and a surrounding core covering (AH11, AH12, SB13) of an optical transmission element (OE11 to OE13) there is at least one dry and compressible fixating element (FE11 to FE13), which surrounds the optical fiber totally or partially, and which exerts a defined contact pressure against the core covering and against the optical fiber for fixating the optical fiber in the longitudinal direction of the transmission element. The fixating element is further formed and positioned in such a way, that position changes of the optical fiber due to bending or elongation are possible. In this way, unallowable attenuation increases in the optical fiber due to bending or position changes can be avoided.

Abstract: The laser-markable sheathing comprises a carbon-blacked inner PE layer with a soot proportion of 2.5±0.5% by weight and an outer PE layer 0.05 to 0.2 mm thick. The outer PE layer completely absorbs the laser radiation (?=532 nm) used for the marking, and the inner layer beneath it remains intact. A largely carbon-free, foamlike structure which greatly scatters incident light serves as an abrasion-proof marking. The sheathing is suitable for cable cores, fiber-optic cable strands, and the like.

Abstract: An apparatus and method for winding cables onto a rotatably driven cable drum without gaps, an oncoming cable being wound in a new coil directly next to the preceding coil at the running-on point, and the running-on angle of the cable being corrected if a monitoring device finds a gap between the last coils. A marking that changes over time is applied to the cable by a marking device before it is wound, and in the marking is detected at least in the new coil and the preceding coil, it being possible for the new coil to be differentiated from the preceding coil.

Abstract: Between an optical fiber (LF11, LFB12, LFB13) and a surrounding slot element (AH11, AH12, SB13) of an optical transmission element (OE11 to OE13) there is at least one dry and compressible fixating element (FE11 to FE13), which surrounds the optical fiber totally or partially, and which exerts a defined contact pressure against the slot element and against the optical fiber for fixating the optical fiber in the longitudinal direction of the transmission element. The fixating element is further formed and positioned in such a way, that position changes of the optical fiber due to bending or elongation are possible. In this way, unallowable attenuation increases in the optical fiber due to bending or position changes can be avoided.

Abstract: In addition to the mechanical stresses caused by wind, icing, etc., the manufacturer of an optical aerial cable has to consider the electrical stress mechanisms (corona discharge, “tracking” effect) which lead to premature aging of the outer jacket by considering constructive measures and the use of special jacket materials. The outer jacket of the aerial cable contains several PE fusible fibers embedded into the jacketing material, whose conductivity is based on the content of carbon black in the amount of 10% of weight to 40% of weight. The resistance of these fusible fibers manufactured by coextrusion with the outer jacket is sufficiently low at 105 &OHgr;/m-109 &OHgr;/m, to discharge the induced electrical charges to the anchoring spirals fastened to the pole. No large potential differences in the longitudinal direction of the cable can occur on the wet, only partially dried jacket surface.

Abstract: A cable, which is suitable for installation into a canal or pipe, has a cable core (ZE, OA) and a cable jacket (KM1, KM2) surrounding the cable core. The cable jacket (KM2) has discrete elevations (LSA) on a base material of the cable jacket, which are formed as longitudinal strips stretching in the longitudinal direction of the cable (OC1). By providing the longitudinal strips (LS), the gliding friction during insertion of the cable into a canal or pipe is reduced, so that the cable can be inserted with comparatively lower force into the canal or pipe.

Abstract: Strand-shaped winding material is continuously supplied to a coil, whereby the position of the winding material is observed with at least one video camera, whereby the data about the wrapping obtained in this way are conducted to a computer unit that initiates a corresponding readjustment. With reference to the coil axis and as seen in radial direction, the position of the apexes of the turns is identified for at least respectively two turns of the new winding ply, and, given a deviation of these apexes from a rated value, a readjustment is implemented in the delivery of the winding material.

Abstract: The optical cable essentially comprises a core (2), containing at least one optical conductor (3), a non-combustible support element (4) surrounding the core (2) in the shape of a tube or cylinder, a fireproofing layer (6) arranged on the support element (4) and a sheath (8, 12) containing a thermal insulation layer (10). A material solidifying under the action of heat serves as fireproofing layer (6).

Abstract: In a method for monitoring the functioning of a compressor, which charges a gas-filled accumulator chamber with a working pressure, the actual pressure prevailing in the accumulator chamber is measured and compared to a setpoint pressure. In response to a deviation in the actual pressure from the setpoint pressure, an error signal is produced. The comparison of the actual pressure and the setpoint pressure is carried out during the charging operation when the accumulator chamber is charged.

Abstract: In addition to the mechanical stresses caused by wind, icing, etc., the manufacturer of an optical aerial cable has to consider the electrical stress mechanisms (corona discharge, “tracking” effect) which lead to premature aging of the outer jacket by considering constructive measures and the use of special jacket materials. The outer jacket of the aerial cable contains several PE fusible fibers embedded into the jacketing material, whose conductivity is based on the content of carbon black in the amount of 10% of weight to 40% of weight. The resistance of these fusible fibers manufactured by coextrusion with the outer jacket is sufficiently low at 105 &OHgr;/m-109 &OHgr;/m, to discharge the induced electrical charges to the anchoring spirals fastened to the pole. No large potential differences in the longitudinal direction of the cable can occur on the wet, only partially dried jacket surface.

Abstract: In the method for manufacturing a cable (CA1), the individual leads (AD1 through ADn) are supplied to a stranding apparatus (RE, RA) that produces a stranded bundle (SB1), whereby the material (MMA1) for the cable cladding (MA1) is applied onto the stranded bundle (SB1) produced in this way with an extruder head (EK1), and the stranding point for the stranding lies in the region of the extruder head (EK1). The individual leads (AD1 through ADn) are already brought into contact with the material (MMA1) for the cable cladding (MA1) when or before they have just been completely stranded to form the stranded bundle (SB1).

Abstract: An optical cable has tensile elements and supporting elements embedded in an extruded outside cladding. The tensile elements are hauled-off from a supply reel and introduced into an extruder head serving to manufacture the outside cladding. The supporting elements are manufactured in a coextrusion with the outside cladding by appropriate channels formed in the extruder head.

Abstract: It is proposed that a pneumatic suspension leveling system for vehicles with pneumatic suspension leveling elements assigned to the vehicle axles and/or vehicle wheels, with a compressor and a central pressure accumulator fed by it for the compressed air supply of the pneumatic suspension leveling elements, with an accumulator pressure sensor which detects the air pressure in the central pressure accumulator and generates a signal value correlating thereto, and with an electronic control device which processes the signal values of the central pressure accumulator and induces a pressure charging of the central pressure accumulator by the compressor, when the signal value of the accumulator pressure sensor reaches a predetermined lower threshold signal value and terminates this pressure charging when the signal value of the accumulator pressure sensor reaches a preset upper threshold signal value be improved with respect to its functional capacity.

Abstract: It is proposed that a pneumatic suspension leveling system for vehicles with a compressor which can be turned on and off by a control device in function of demand, which compressor only needs to operate intermittently, with predetermined on-time duration, during normal operation, be improved with respect to its functional capacity. This problem is solved in accordance with the invention in that the control device of the pneumatic suspension leveling system varies the on-time duration of the compressor in function of the heat transfer conditions which prevail between the compressor and the air enveloping the latter.

Abstract: An optical cable has tensile elements and supporting elements embedded in an extruded outside cladding. The tensile elements are hauled-off from a supply reel and introduced into an extruder head serving to manufacture the outside cladding. The supporting elements are manufactured in a coextrusion with the outside cladding by appropriate channels formed in the extruder head.

Abstract: A method and device for winding an elongated element onto a cable product comprises a probe for measuring the tensile stress of the elongated element as it moves from a supply coil to a point for winding the element onto the cable product.

Abstract: An improved optical cable having at least one light waveguide having a coating and other component parts in the form of protective sheaths of plastic material as well as potentially tensile elements and filling compounds. The improved cable being recyclable, since the other component parts contain only polyolefins and small amounts of glass or inorganic fillers, so that the cable can easily be recycled into pellets having the inorganic fillers and glass acting as reinforcing elements.