Abstract: Fiber optic splice case for retaining at least one primary cable and a plurality of service cables in spliced connection. The case includes removably interconnectable members including a base member and a top or cover member. The case is divided into at least two chambers to retain carrier and service fibers in an orderly and sufficiently radiied arrangement. Sealing members are provided and include one seal around the primary cable projecting into the case which seals the case without employing tapes or sealants. Mounting portions retain the case and permit convenient projection of the case from a protective housing for access to the splice connections.

Abstract: A mechanical fuse device for an access cable to a submerged equipment housing in a cable transmission link, said access cable including a tube enclosing items that provide transmission and being equipped with a longitudinal sealing device, wherein the mechanical fuse device comprises means for responding to traction exerted on the cable upstream relative to the equipment housing by retaining a portion of the cable upstream from the sealing device and exerting a crushing effect on the tube.

Abstract: An excellent optical fiber built-in type composite insulator is provided having a reliable and durable sealing portion in a central axis penetration hole of the insulator for sealing the optical fiber in a very quick, simple and economical way with reduced members, devices and production steps. The composite insulator includes a ceramic insulator having a penetration hole in its central axis portion, at least one optical fiber inserted in the penetration hole, and sealing portions made of inorganic glass arranged at both ends of the penetration hole for sealing the optical fiber therein, and comprises recessed portions of the ceramic insulator arranged around the ends of the penetration hole, and heat generating elements arranged in the recessed portions for heating and melting the inorganic glass to form the sealing portions at the both ends of the penetration hole. The present invention provides also a method of producing the composite insulator.

Abstract: A connector system for operatively connecting the ends of two fiber optic cables together. A wall-mountable plate includes an elongated receptacle containing spaced through bores. The bores have opposed frusto-conical entry sections which are joined by a cylindrical central section. A terminal connector is mounted on the end of each cable and has spaced frusto-conical projections which end in cylindrical nose portions containing the ends of the fibers. The terminal connector projections are insertable through opposite ends of the bore into abutment of the nose portions at an interface location along a central portion of the bore. Lock tabs and shoulders on the receptacle and on one of the terminal connectors latch the connector within the bore, with the terminal being held without bias and against reverse movement out of that end of the bore. A collar is slidably mounted on the other terminal connector, with a spring captured between the connector and the collar for biasing them apart.

Abstract: An optical fibre connector or similar entry for an optical fibre cable to an aperture in a enclosure has a metal shell supporting a resilient insert made of an elastomeric polymer loaded with up to about 30% of a material such as carbon particles so that the insert is absorptive of microwave energy at wavelengths similar to the size of the aperture. The faces of the insert have electrically-conductive layers thereon. The optical fibres of the cable are terminated in metal ferrules supported in apertures in the insert.

Abstract: An optical fiber composite insulator which includes an insulator body having a through-hole formed in its axis portion and at least one optical fiber extending through the through-hole and sealed in the through-hole by an inorganic vitreous sealing material at both end portions of the through-hole. The sealing material has substantially the same thermal expansion coefficient as that of the insulator body, has high resistances against breakage in the power frequency voltage test and in the lightning impulse voltage test, against crack formation in the cooling and heating test, heat proof test and heat cycle test, and against the light-transmission loss.