Abstract: The invention relates to a method for manufacturing a cable, including, from the inside to the outside, a central electrical conductor (1), a first semiconductor screen (2), an intermediate electric insulator (3), a second semiconductor screen (4), a metal screen (5) and an outer sheath (6), the method comprising a step of extruding a composition comprising at least one polyolefin for forming at least one layer constituting the first semiconductor screen, the intermediate electric insulator or second semiconductor screen and a step of cross-linking said layer. According to the invention, the method comprises the step of injecting, into the composition, a liquid solution containing at least one peroxide and at least one so-called cross-linking coagent, during the manufacture of said layer. The invention likewise relates to a cable manufactured by means of such a method.

Abstract: The invention relates to a method for manufacturing a cable, including, from the inside to the outside, a central electrical conductor (1), a first semiconductor screen (2), an intermediate electric insulator (3), a second semiconductor screen (4), a metal screen (5) and an outer sheath (6), the method comprising a step of extruding a composition comprising at least one polyolefin for forming at least one layer constituting the first semiconductor screen, the intermediate electric insulator or second semiconductor screen and a step of cross-linking said layer. According to the invention, the method comprises the step of injecting, into the composition, a liquid solution containing at least one peroxide and at least one so-called cross-linking coagent, during the manufacture of said layer. The invention likewise relates to a cable manufactured by means of such a method.

Abstract: The invention relates to a method for manufacturing a cable, including, from the inside to the outside, a central electrical conductor (1), a first semiconductor screen (2), an intermediate electric insulator (3), a second semiconductor screen (4), a metal screen (5) and an outer sheath (6), the method comprising a step of extruding a composition comprising at least one polyolefin for forming at least one layer constituting the first semiconductor screen, the intermediate electric insulator or second semiconductor screen and a step of cross-linking said layer. According to the invention, the method comprises the step of injecting, into the composition, a liquid solution containing at least one peroxide and at least one so-called cross-linking coagent, during the manufacture of said layer. The invention likewise relates to a cable manufactured by means of such a method.

Abstract: The flame-resistant electric cable comprising at least one central conductor surrounded by an insulating layer, itself surrounded by an outer sheath comprising an inner layer of flame-resistant synthetic material that conserves mechanical stability when it is subjected to a source of heat leading to softening, and an outer layer of a flame-resistant synthetic material in contact with the inner layer and decomposing into a thermally insulating layer when it is subjected to a source of heat leading to its decomposition.

Abstract: A cross linkable composition includes a copolymer part being composed of a copolymer of ethylene and an organic acid salt of an alkyl, alkenyl, or alkynyl radical including 26% to 42% by weight of monomer, representing 50% to 90% by weight of the polymer phase; and an acrylonitrile-butadiene copolymer having 25% to 50% by weight acrylonitrile, representing 10% to 50% by weight of the polymer phase. It further has carbon black having a specific surface area of less than 170 m2/g, representing 40% to 75% by weight of the polymer phase and additives such as antioxidants, anti-coppers, peroxides, silanes, in quantities that generally remain below 5% of the polymer phase.

Abstract: A cross linkable composition comprises a copolymer part consisting of a copolymer of ethylene and an organic acid salt of an alkyl, alkenyl, or alkynyl radical comprising 26% to 42% by weight of monomer, representing 50% to 90% by weight of the polymer phase; and an acrylonitrile-butadiene copolymer having 25% to 50% by weight acrylonitrile, representing 10% to 50% by weight of the polymer phase. It further has carbon black having a specific surface area of less than 170 m2/g, representing 40% to 75% by weight of the polymer phase and additives such as antioxidants, anti-coppers, peroxides, silanes, in quantities that generally remain below 5% of the polymer phase.

Abstract: An improved process for making a multiple pane fire resistant window whose spacings are filled with an aqueous gel possessing multiple carbon bonds, wherein the improvement comprises placing a thin layer of an adherence agent on the contact surface of the panes, prior to placing the aqueous gel in the spacing. The adherence gel is selected from the group consisting essentially of organic titanates, organic zirconates, and silanes able to react with the aqueous gel's multiple carbon bonds.

Abstract: A combination device permitting filtering of an air-sand mixture or an air-metal liquid mixture at the moment of filling a foundry mold, as well as ejection of the molded part, wherein a filtering element, composed of a spiral spring with spaces between its turns, is mounted and centered in the mold. This filtering element centers and guides an ejector, driven by an ejection striker plate. In the process of ejection, the elongation of the spring widens the spaces between its turns, thus freeing bits of sand or metal caught between the turns, to provide self-cleaning. The device can be used in foundries to make mold cores and to mold light-alloy parts by gravity or low pressure in metal molds.

Abstract: A coupling member for a quick-fitting pipe coupling comprising two separate fluid passages communicating each through a different port formed in the sliding socket with two series of passages formed separately in the body and the locking member, thus affording the simultaneous coupling of a double fluid circuit by using a single coupling member.

Abstract: The invention relates to a snap-fitting pipe connecting device comprising a body adapted to be secured to the frame structure of a machine, a connecting member proper and a lock bolt, a fluid passage formed in the connecting member having a portion at right angles to the axis of said member. The body of the device constitutes a connecting or distributor box adapted to supply several different fluids. Each connecting member and the bore receiving same in said body comprise specific assembly means inherent thereto to prevent their accidental operation in another bore intended for other connecting members, and vice versa.

Abstract: The invention relates to a pneumatic device for controlling the termination of an operation on a workpiece by means of the spindle of a machine. Said device comprises, around the front or tool end of the spindle, a sleeve provided with a front seal adapted, at the end of the operation, to engage the workpiece or a jig clamping same, so as to form with said workpiece or jig a closed, sealed space supplied with compressed air, an air exhaust port opening into said space and being adapted to be connected to a pneumatic receiver for controlling the end of the operation.