General Cable Corporation

Jerzy A Olszewski

Arnab Sarkar

Anthony P Gabriel

Ludwik Jachimowicz

Towheed Ramy

Ludwig Jachimowicz

Yung-Yien Huang

The subject invention relates to a new connector assembly design for making a low resistance, stable electrical connection to a plastic coated aluminum shield adhering to and underlying polyethylene jacket of telephone cables. When the connector in accordance with the invention is applied across the composite sheath, it eliminates the creep strain exhibited by the polyethylene jacket and aluminum shield and results in a stable low resistance electrical connection, which is essential for noise-free operation of the cable and good lightning protection of enclosed telephone circuits.

Reliable sheath bonding connector and method of making

The application of low loss optical fibers in optical communication systems requires that the glass fibers are suitably packaged into a cable. This invention provides a system of multiple optical fibers between two tapes or films, one of which holds the fibers on the film by pressure-sensitive adhesive and in spaced relation to one another. The fibers are covered by a second film, preferably thinner than the first film, and secured to the first film along the edges of the films to provide a laminated structure suitable for cabling. Spacers between the films eliminate asymmetric pressure of the covering film against the optical fibers which are nearest to the edges of the films; and the spacers are preferably strength members for stiffening the laminate.

Multiple fiber laminate for optical waveguides

This specification describes a novel apparatus and method for testing optical wave guides to determine the optical attenuation and to locate faults in the optical fiber. The light for test purposes is launched into the fiber by one or more light beams that surround the wave guides and that are focussed to converge from around the circumference and at the axis of the wave guide; the convergence being at low angles of incidence, so that some of the light enters the wave guide. The remaining light launched into the wave guide in opposite directions at a location, nearer to one end than to the other, is measured at opposite ends of the wave guide. The ratio of the light at the opposite ends of the wave guide and the difference in the length of travel of the light from the region of entry to each end is used to compute attenuation. Faults are found by internal reflections of the light beam in the wave guide.

Test apparatus for optical waveguides

This optical fiber cable has the optical fibers adhered to a support. An assembly including the fibers and the support is carried by a core element having a helical channel in which the fiber assembly is located and free to adjust itself to accommodate bending of the cable without subjecting the optical fibers to pressure or to bends that are excessively sharp. The construction also avoids pressure on the optical fibers from binders, core tapes, or the cable sheath when the cable is bent. It also avoids micro-bending losses. Locating of the optical fibers closer to the cable axis further decreases bending losses.

Optical fiber cable construction

This internally shielded telephone cable provides more efficient shielding for meeting near-end crosstalk requirements in carrier systems having expanded channel capacity and increase in equivalent frequency from 772 kHz to 1.576 MHz or higher. The improved shielding uses tapes bent into configurations that obtain greater shielding area from a single tape, and constructions that are less expensive than prior art and produce a mechanically stronger and more unitary cable structure.

D-shield telephone cables

This invention is a coaxial cable with watertight compartments between the discs that hold a center conductor coaxial with a tubular outer conductor. The object of the invention is to obtain greater mechanical strength for the cable without undue increase in attenuation. Discs are connected with the center conductor by a chromate conversion coating on the copper of the center conductor; by a polyethylene tube hugging the center conductor; and by necked down regions of the center conductor. This latter construction makes the cable suitable for microwave transmission as well as TV signals. Disc bonding to the outer conductor utilizes coatings on the inside surface of the outer conductor.

Watertight disc coaxial cables

The telephone communication cable of this specification has a metal shield formed by bending a sheet of metal at one or both edges so that the portions of the sheet that are folded over one another form a shield of double thickness and the shield has one or both of its edges formed by a continuous extent of folded metal instead of a square edge or fluted edge with a burr along the side of the edge toward which the slitting instrument advanced to make the cut. Air spaces are prevented by filling any clearance between the folded areas of the shield with adhesive. The shield is applied as a D-Screen with the edges off the original strip on the curved part of the D-Screen and away from the group of pairs that are shielded by the D-Screen.

Growing community of inventors

Edison, NJ, United States of America

Jerzy A Olszewski