Abstract: A connector for two optical fibers having at least one body composed of a one-piece member with an axial bore, a ferrule supporting an optical fiber in the bore, the axial bore being defined by two coaxial cylindrical surfaces of revolution having different diameters, two ferrules supporting in an internal bore the two fibers, the two ferrules each being defined by an external cylindrical surface of revolution complementary to that of the one-piece member having the smaller diameter, at least one first sleeve mounted around the first of the ferrules; first elastic linking means between the sleeve and the first ferrule, the sleeve being defined externally by a cylindrical surface of revolution complementary to that of the body member having the larger diameter, these two ferrules being introduced into the body member such that, firstly, they are positioned at least partially in the axial bore of the smaller diameter and, secondly, such that the sleeve is placed in the axial bore of larger diameter.

Abstract: Multi-contact electrical connectors having socket-type female contacts and pin-type male contacts, each female contact having a single radially deflecting part which in its deflected position allows the corresponding male contact to enter or withdraw from the female contact with weak or zero force, and which when the male contact is fully inserted is held, possibly by a shiftable control member, in a gripping position in which the deflecting part grips the male contact. The deflecting part has a boss or protuberance projecting outwards radially through a hole in an external casing of the respective female contact so as to be movable by the control member or other abutting structure.