Abstract: Fiber optic cable containing, (a) a core of S-Z stranded strands composed of first and second alternatingly repeating and essentially equal first and second sections, each of the first sections having a common direction and degree of lay substantially equal to but opposite to that of the second sections and (b) a sheath circumscribing the fibers containing marks on its outermost surface essentially transversely co-extensive with that portion of the optical fiber where the first section joins the second section.

Abstract: A device for use in connecting an optical fiber with another optical fiber or other optical component. The device comprises a housing having a passage therein where chamfered sleeves are placed end to end. Springs urge a plurality of spherical balls radially inward against chamfered conical surfaces of the sleeves, thereby keeping the sleeves in proper alignment.

Abstract: A strain relief apparatus, particularly useful for separating individual optical fibers in a multi-fiber optical cable. Optical fibers from the fiber optic cable are fed through the center of a wedging device and into separate tubes. A coupler wedges first and second members against the wedging device, securing strength members, such as aramid fibers from the fiber optic cable and tubes, between the first and second members and the wedging member.

Abstract: A connector having a unitary dust cover. The dust cover is formed by a cap fitting on one side of the connector and two flaps attached to the cap, each flap adapted to cover a portion of the other side of the connector, which may have attached posts to allow the connector to be used in modular fashion with a base plate. At least one flap may be held between the posts by indentations in the flap.

Abstract: An optical fiber connector having a magnifying lens to aid the user in placement of the optical fibers to be abutted.

Abstract: A first embodiment of an optical splice having a frame with a channel; two rods each having a resilient exterior surface disposed in the channel; and a lid adapted to be received on the frame over the channel, the lid having a resilient surface adapted to allow compression of optical fibers placed end to end for splicing between the rods by the lid and the rods. The frame and lid are placed within a tubular housing and a tubular sleeve which is attached at the ends following insertion of the optical fibers.

Abstract: A fiber optic cable adapted for underwater duty comprising a core of optical fibers circumferentially surrounded by jacket, the jacket being composed of metal particles suspended or embedded in a plastic.

Abstract: An apparatus and method for measuring dispersion in an optical fiber including transmitting light of a first wavelength and a second wavelength through the optical fiber, measuring the difference in time required for light of the first wavelength and light of the second wavelength to traverse the fiber, and calculating the dispersion of the fiber from the two wavelengths and the time difference. Lasers may be used as light sources and an oscilloscope may be used to measure the time difference.

Abstract: A telephone network interface device having differing means for access for the public utility, building owner or apartment manager, and those living in individual housing units; differing means of access provided in part by a latchpiece inserted between a first gate leading to a subscriber compartment and a second gate leading to the utility compartment. Also described is a container using the latchpiece.

Abstract: A single fiber optical connector with a tube holding two first rods. A curve is induced into optical fibers by force provided by tapered ends of two second rods resting on the first rods. The curve causes the optical fibers to rest in a groove formed by the first rods for splicing.

Abstract: A telephone network interface device adapted to be connected to and in between a telephone subscriber premise wiring and a Telephone Company owned subscriber loop comprising a backwall and a sidewall affixed to the sidewall delimiting a cavity in which there is: first and second sets of terminals connected to the backwall and a device to place the terminals of the first set in removably electrical communication with the second set of terminals, the first set of terminals comprising first and second spaced-apart dielectric blocks, each dielectric block containing a plurality of terminals and a plurality of first slots in a first surface and a second slot in a second surface, each of the first slots in the first dielectric block being in alignment with one of the first slots in the second dielectric block and disposed essentially perpendicular to the base and the second slots are mechanically and slideably fitted over a rib on the base so that the dielectric blocks may be slideably moved towards and away from o

Abstract: A fiber optic dropwire having a fiber optic transmission member between two strength members. The optical fiber has an outer coating having a higher melting point than the outer dropwire covering.

Abstract: Disclosed is a compensating cable adapted to be used in combination with an elevator cab, counterweight, hoist rope and traveling cable. The compensating cable is composed of a sheath, at least one elongated strength member such as a link chain or stranded wire rope, made from metal or other materials of high tensile strength disposed in the sheath and the volume of the sheath not otherwise occupied by the strength member substantially occupied by a mixture of metal particles and plastic.

Abstract: Disclosed is a compensating cable adapted to be used in combination with an elevator cab, counterweight, hoist rope and traveling cable. The compensating cable is composed of a sheath, at least one elongated strength member such as a link chain or stranded wire rope, made from metal or other materials of high tensile strength disposed in the sheath and the volume of the sheath not otherwise occupied by the strength member substantially occupied by a mixture of metal particles and plastic.

Abstract: A biconic optical fiber connector adapted to introduce in an optical fiber transmission line a predetermined amount of attenuation comprising: a frustroconical shaped male and socket member adapted to be fitted into one another, a first optical fiber having a free end disposed in and terminated on a surface of the frustroconical shaped male member and a second optical fiber in alignment with the first optical fiber having a free end disposed and terminated in the socket. A shim or sleeve with an aperture having inside and outside frustroconical surfaces delimiting a predetermined wall thickness between them disposed over the frustroconical member and between the socket and frustroconical male member, the wall thickness of the shim causing the free ends of the first and second optical fibers to be separated one from another a predetermined distance so as to introduce into the optical fiber transmission line a predetermined amount of attenuation that is a function of the shim's wall thickness.

Abstract: Disclosed is a method and apparatus for quickly joining one set of optical fibers to another set followed by permanent repair. The basic apparatus comprises two frames, each having a cross member containing a plurality of spaced apart optical fiber connectors; optical fibers optically connecting one connector in one frame to a corresponding connector in the other frame; at least one means in each frame to anchor a cable to the frame; and a bracket means attached to each frame between that frame's connectors and anchor means. A bare fiber adapter is also disclosed adapted to removably receive an optical fiber coaxially. On one end of the bare fiber adapter is a means affixed thereto for removably securing an optical fiber within the adapter.The repair method of a severed fiber optic cable involves the use of the above described apparatus as follows:Cable ends to be joined are stripped and secured in each frame.

Abstract: A fiber optic cable having an outer jacket, a central coaxial member and at least one buffer tube wound around the central coaxial member, the buffer tube holding at least one optical fiber, where the buffer tube is shaped to allow extensive movement of the fiber radial to the cable axis, but allows only slight movement of the fiber in other directions. The buffer tubes may be filled with a gel to cushion optical fibers within.

Abstract: A three flange cable spool having first and second spaced-apart flanges, a tubular-shaped medium portion attached to and disposed between the first and second flanges delimiting a first outside surface between the first and second flanges, a plurality of spokes inside of the medium portion attached to the medium portion, a third flange, spaced apart from either one first or second flange, with a lateral protrusion thereon, a part of the lateral protrusion removably received in the medium portion and another part of the lateral protrusion forming a second outside surface between the third and either the first or second flanges.

Abstract: An electrical jack having a jack door biased so as to block the opening of a passage within the jack housing when the jack is not in use and which unblocks the passage in response to insertion of a plug within the passage. The jack door may contain slots for slideably receiving electrical contacts embedded in a dielectric body within the housing. When a plug is inserted the electrical contacts engage electrically with the plug. Upon removal of the plug the jack door is urged to reblock the passage.

Abstract: An elevator compensating cable which has an elongated plastic tube shaped member which delimits a predetermined volume. Disposed within the predetermined volume are: (a) at least one elongated member; (b) an elongated means made from a mixture of metal particles of plastic; and (c) a plurality of elongated fibers adapted to move relative to one another, the strength member, and the elongated plastic tube shaped member, having a coefficient of elongation of not more than 30% and a coefficient of friction relative to all surrounding materials of not less than 0.3.