Abstract: A device for protecting contact elements of a connector having two ends, made up of an inner and outer disk mounted to support cylinders placed in front of the contact face of each end, and pierced with openings. The openings on the outer disk are normally masked by the inner disk, and are open to the contact elements only at the time of connection, under the action of a circumferentially disposed control ring, carrying a lug working with grooves on the support cylinders. The applications of the invention are particularly in the fields of television cameras and oil prospecting.

Abstract: In order to connect fibers so as to ensure high efficiency of light transmission through connectors, fiber ends must be centered in terminals with a high degree of accuracy. In the proposed connector, each fiber terminal serves as a mold for the injection of a polymer or a fiber-retaining adhesive. A simple geometrical device is employed for centering the fiber end within its terminal, accuracy of centering being ensured solely by the device itself without being dependent on precision-machining of the terminal.The invention is applicable to either single or multiple connectors employed in optical-fiber data-transmission systems.

Abstract: The invention relates to the field of connectors for optical monofibres.In the case where the monofibre (1) is covered by a flexible sheath or envelope (3), the fixing in a connector end fitting may suffer from poor concentricity. According to the invention, a deformable cylinder (4) is placed round the fibre and to said cylinder are applied forces (P) balanced in four perpendicular directions transmitted to the flexible sheath (3) of the fibre by four, internal clamping jaws (31), which bring about a spontaneous recentering of the fibre by the creep or flow thereof. The cylinder is then placed in the end fitting.The applications relate more particularly to optical fibres with plastic sheaths for telecommunications purposes.

Abstract: In order to make a connection between the fibers of an optical transmission line, the end portion of each fiber is centered in a connector terminal by means of a reference dihedron. The terminal is applied against the faces of the dihedron at one end. The other end of the dihedron is fitted with a set of two packing-blocks and two cylinders for positioning the optical fiber in the bisecting plane in a direction parallel to the edge of the dihedron. The fiber is finally fixed in position by means of a suitable adhesive.

Abstract: The invention relates to a manual and portable device for crimping ferrules onto bundles of optical fibres comprising a number of fibres such that these fibres may be hexagonally arranged. The device primarily comprises means for holding the ferrule in the tool, crimping means essentially consisting of an element supporting three knurled rollers which is capable of being rotated whilst the three knurled rollers, at the same time as rotating, may be moved progressively nearer the axis of the bundle until their spacing corresponds to the minimum cross-section of the bundle. The device may also comprise a release mechanism enabling the approach movement of the knurled rollers to be stopped when this cross-section is reached.

Abstract: A connector for two optical monofibres, with two ferrules, each ferrule comprising a positioning sleeve and a beam, joining in bridge-fashion with two sleeves, and bearing a V-shaped groove for receiving the two fibres to be connected, therefore positioned opposite one another in unique fashion irrespective of the precision with which the angle of the V-shaped groove is machined.

Abstract: The invention relates to a positioning ferrule for an optical fibre providing an adjustable connection between two fibres. The positioning ferrule according to the invention comprises detecting means for detecting the uncoupled radiation in the down-side fibre and therefore transmitted in the sheath of the latter. The process for adjusting a connector comprising said ferrule comprises producing a relative displacement of the axes of two fibres so that the detected radiation is minimum. The invention is applicable to long-distance optical telecommunications employing monomode optical fibres.

Abstract: Connector in two parts for the connection of two single optical fibres, each part containing a cylindrical sleeve with a V-shaped longitudinal groove to receive the single fibre, said groove being sloped in relation with the axis of the sleeve, the achievement of any desired positioning of the contact face of each optical fibre being obtained by parting off each sleeve at a predetermined length.

Abstract: Connector of the multi-channel type, comprising two ferrules, the angular orientation by which the conductive contacts are positioned opposite one another, provided by end surfaces, at which said contacts open, shaped in the form of a plane inclined at the same angle relative to a plane perpendicular to the longitudinal axis, by which the two ferrules are automatically oriented angularly into a single matching position, when said end surfaces are in contact.