| Patent Number |
Title Of Patent |
Date Issued |
| D344140 |
Electrical equipment enclosure |
February 8, 1994 |
|
| D335487 |
Environmentally sealed insulation displacement connector terminal block |
May 11, 1993 |
|
| D334734 |
Optical fiber splicer |
April 13, 1993 |
|
| D332451 |
Universal enclosure with cross-connect cabinet |
January 12, 1993 |
|
| D291566 |
Retrofittable card reader and carrier select keyboard unit for paystation telephones |
August 25, 1987 |
|
| D291563 |
Credit card reading telephone set |
August 25, 1987 |
|
| 5523916 |
Surge arrester with thermal overload protection |
June 4, 1996 |
| A surge arrester assembly includes an electrically conductive container having disposed therein a surge arrester and a meltable element. The surge arrester has a first electrode in electrical contact with the container and a second electrode not in electrical contact with the container. |
| 5514005 |
Quick connect/disconnect module |
May 7, 1996 |
| A module for quickly and easily connecting and disconnecting electrical wires comprises a nonconductive housing having a first connector compartment for housing a first plurality of wire connectors and a second connector compartment for housing a second plurality of wire connectors. A |
| 5473666 |
Method and apparatus for digitally controlling gain in a talking path |
December 5, 1995 |
| A processor controlled test set is disclosed for testing special service circuits of a telecommunication system. A microprocessor controls the overall operation of the test set, while a digital signal processor provides high speed timing signals to the various test circuits for gener |
| 5451170 |
Terminal block with protection |
September 19, 1995 |
| A terminal block mounts a plurality of insulation displacement connector type terminal clips formed of an electrically conductive material, each terminal clip having a base portion, an insulation displacing wire-engaging portions projecting outwardly from the base portion and a wire |
| 5384427 |
Flood protection pedestal |
January 24, 1995 |
| A flood protection pedestal protects telecommunications equipment and the like retained therein from water damage during flood conditions in the surrounding environment. The flood protection pedestal includes a base assembly, a structural cover assembly removably attached to the base |
| 5341270 |
Drop resistant cup-arrester assembly |
August 23, 1994 |
| An arrester assembly for arresting over-voltage conditions in electric circuits and for isolating an arrester element from possibly harmful effects of external forces applied to the arrester assembly comprises a hollow cup and an arrester element located within the cup for arresting |
| 5302137 |
Insulation displacement connector terminal block |
April 12, 1994 |
| A terminal block mounts a plurality of bi-ended insulation displacement connector type terminal clips formed of an electrically conductive material, each terminal clip having a base portion and a pair of similar insulation displacing wire-engaging portions projecting oppositely outwa |
| 5260996 |
Current limited electronic ringing generator |
November 9, 1993 |
| An electronic ringing generator circuit with provision for power efficient current limiting and preservation of sinusoidal or near sinusoidal output waveform under overload conditions. A pulsewidth modulated DC-DC power convertor produces supply voltages for a linear class B power amplif |
| 5260994 |
Maintenance termination unit module |
November 9, 1993 |
| A maintenance termination unit module for housing electronic equipment including a maintenance termination unit electronic circuit for use in a telecommunications network, comprises a housing portion and a base portion. The electronic equipment is located within the housing portion, |
| 5237483 |
Protector system for low voltage power feed |
August 17, 1993 |
| A protector system is provided for use in a low voltage power feed arrangement including a device requiring a low voltage power feed, and a power source. The power source is capable of supplying the device with electrical power. The device is electrically connected to the power source |
| 5235134 |
Sealed reenterable splice enclosure |
August 10, 1993 |
| A method and apparatus for sealing a splice enclosure to protect cable splice connections retained therein. A sealing member is a single piece body integrally formed of a suitable material which resists detrimental environmental effects and is resiliently compressible in an axial dir |
| 5227947 |
Arrester assembly with sealed back-up air gap |
July 13, 1993 |
| An assembly for defining a sealed back-up air gap, for use with a line protector comprising an over-voltage arrester housed within a canister and defining a back-up air gap therebetween, comprises an electrical contact and a sealing member. A mounting arrangement is disposed on the elect |
| 5216736 |
Welded splice element |
June 1, 1993 |
| An optical fiber splice element useful for effecting a splice connection between at least two optical fibers comprises a pair of joinable splice halves. Fiber channels are provided on the splice halves extending through the element for accepting an optical fiber. Recess portions are prov |
| 5204929 |
Fiber patch panel |
April 20, 1993 |
| A fiber optic patch panel module for accepting an optical fiber cable, and for use with telecommunications transmission networks mountable in an existing network bay frame designed for mounting electrically conductive wire patch panels comprises a housing having at least a top panel and |
| 5198638 |
Retractable battery tray |
March 30, 1993 |
| A retractable battery tray includes a supporting structure, a tray assembly, and a heating device. The support structure of the battery tray generally spans and attaches to two spaced apart supporting base structures of a telecommunications equipment cabinet and supports the tray ass |
| 5195015 |
Line protector for a communications circuit |
March 16, 1993 |
| A line protector for a communications circuit comprises a housing, an over-voltage arrester received in said housing and having axially opposite electrodes and a ground strip for coupling one of the electrodes to electrical ground. An over-current arrester has at least one line contact |
| 5180962 |
Apparatus for temperature compensating one or more battery chargers |
January 19, 1993 |
| An apparatus including a circuit which causes the float voltage of one or more battery chargers to change so as to compensate for changes in the ambient temperature of the batteries connected to the chargers. The circuit does not regulate the charge voltage to the battery but rather |
| 5156551 |
Front-facing line terminal block assembly |
October 20, 1992 |
| A front facing line terminal block assembly for a telecommunications network has an external housing mountable to a frame and a field block housing pivotally mounted to the external housing. The field block housing mounts a field block bearing a plurality of wire connectors. The external |
| 5155746 |
Clock synchronization scheme for digital transmission |
October 13, 1992 |
| A clock synchronization scheme for synchronizing a remote terminal to a distantly located central office terminal. In order to obtain synchronization, the central office terminal repetitively transmits a frame which has in it only one synchronization bit located in a predetermined po |
| 5147219 |
Reusable terminal locking cap |
September 15, 1992 |
| A reusable cap for providing mechanical, electrical and environmental isolation of an electrical terminal. The cap includes a tubular body which has in it an opening for receiving the wire(s) connected to the terminal binding post. The tubular body has a neck. Seated in the neck is the |
| 5146476 |
High gain amplifier for reception of low level pulse code modulation nonreturn-to-zero signals |
September 8, 1992 |
| An amplifier for use with low level pulse code modulation (PCM) nonreturn-to-zero (NRZ) signals. The amplifier has a high, but controllable gain and does not have a DC shift at its output as long as there is at least one zero or one one bit in each of frame PCM NRZ signals. The ampli |
| 5144510 |
Conductive pedestal for use with solid state overvoltage arrester |
September 1, 1992 |
| A line protector for a communications circuit provides at least overvoltage protection. The overvoltage protection is obtained through a solid state arrester such as a diode. As the solid state arrester is not as long as the carbon electrode type or gas tube arrester which it replaces, t |
| 5139440 |
Environmentally sealed insulation displacement connector terminal block |
August 18, 1992 |
| An environmentally sealed terminal block includes a hollow block member and a plurality of connection assemblies mountable on the block member for providing interconnections between respective conductors of two groups of wires. Each of the connection assemblies includes an insulation |
| 5136463 |
Universal enclosure with electrical panel |
August 4, 1992 |
| Apparatus for housing outside plant equipment in order to protect the equipment from the possibly harmful effects of weather and an external environment comprises a universal enclosure encompassing the outside plant equipment and having an interior and an exterior. An opening is disposed |
| 5134678 |
Strain relief for optical fiber |
July 28, 1992 |
| A strain relief is provided for use with a splice for optical fibers having a fiber channel for housing and guiding a buffered optical fiber. At least one section of the fiber channel has a diameter sufficient to accept the buffered optical fiber. The strain relief is located on this sec |
| 5133038 |
Fiber optic splice case |
July 21, 1992 |
| 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 c |
| 5127851 |
Modular patch panel |
July 7, 1992 |
| A digital signal cross-connect having a relatively high digital signal transmission rate for use with telecommunications transmission networks mountable in an existing network bay frame designed for mounting digital signal cross-connects having substantially lower signal transmission rat |
| 5127845 |
Insulation displacement connector and block therefor |
July 7, 1992 |
| A terminal assembly includes a block and a plurality of clip-type terminals mounted to the block. The block is a dielectric body having a central section and fanning strip sections at opposed margins. The terminals are loosely received through the holes and have wire receiving portions o |
| 5122945 |
Voltage controlled preload |
June 16, 1992 |
| A preload circuit for a DC to DC converter which has main and auxiliary outputs. The circuit responds to the voltage in the auxiliary output circuit to provide a linearly varying preload at the converter's main output terminals. The preload is a maximum when the usual load at the main |
| 5121456 |
Polymer spring fiber optic splicer, tool for operating same and panel incorporating same |
June 9, 1992 |
| A splicer for optical fibers. The splicer is assembled from two polymer body halves. When assembled the body halves function as spring clamps. Internal to the body halves is a metallic splice element which is assembled from two mirror image halves. The polymer body halves and the met |
| 5093887 |
Sliding cable tray with cable pivot arm |
March 3, 1992 |
| A pivot arm and a sliding shelf assembly for use in a cabinet housing and efficiently organizing fiber optic cables. The shelf assembly including a shelf movable into and out of the cabinet providing an area for storing a length of fiber optic cable and upon which cables may be joined. T |
| 5067810 |
Shared laser tandem optical time domain reflectometer |
November 26, 1991 |
| An instrument such as an optical time domain reflectometer (OTDR) in which a single source of light such as a laser shares N (N.gtoreq.2) optical fibers. The pulse of light from the laser is split into N pulses each having essentially the same power. The N pulses are input to an associat |
| 5055636 |
Sealed reenterable splice enclosure |
October 8, 1991 |
| A method and apparatus for sealing a splice enclosure to protect cable splice connections retained therein. The sealing member is a single piece body integrally formed of a suitable material which resists detrimental environmental effects and is resiliently compressible in an axial d |
| 5050210 |
Metallic current limiter |
September 17, 1991 |
| A circuit for the non-linear limiting of the metallic current flowing in telephone line conductors. The circuit senses the metallic current flowing in the conductors. If that current exceeds a predetermined limit, the circuit provides from a controlled and variable voltage source a volta |
| 5046067 |
Digital transmission system |
September 3, 1991 |
| A digital transmission system which serves a multiplicity of subscribers by a multiplicity of channel units. Each channel unit serves up to two subscribers. At each end of the system, there is included a signaling processing unit (SPU) which provides both time slot interchanging and |
| 5044981 |
Snap-on stacking telephone jack |
September 3, 1991 |
| A communication line plug coupler is for use in a multiline equipment panel which snap fits into an aperture formed through a surface of the panel. The coupler receives at least one communication line plug on each side of the panel providing a primary demarcation point in determining sys |
| 5022752 |
Echo cancelling circuit for use with laser |
June 11, 1991 |
| An echo cancelling circuit for use with a laser whose generated light is connected to an optical fiber by a connector. The connector reflects part of the laser light to a detector associated with the laser. The echo cancelling circuit attenuates the laser generated light by a predetermin |
| 5015019 |
Locking mechanism for equipment cabinet |
May 14, 1991 |
| A locking mechanism locks a door or panel over an opening to deter breach of the locking mechanism and prohibit unauthorized access. The locking mechanism includes an escutcheon plate which is non-removably secured to the door. This escutcheon plate has a front side and a back side, the |
| 5001602 |
Network interface cabinet for large pair count telephone terminations |
March 19, 1991 |
| A network interface cabinet for large pair count telephone terminations comprises a generally rectilinear cabinet including parallel and spaced top and bottom walls and two pairs of parallel spaced apart sidewalls forming respective front, rear and lateral walls running between and j |
| 4980655 |
D type flip-flop oscillator |
December 25, 1990 |
| An oscillator for generating a master clock frequency and also dividing that frequency by two. The oscillator uses one flip-flop of a dual D package as the generator for the master clock frequency and the other flip-flop in that package to divide that frequency by two. |
| 4971421 |
Fiber optic splice and patch enclosure |
November 20, 1990 |
| A communication cable enclosure having a generally hollow housing, a splice area for splicing and containing cables and a patch area having multiple connectors attached to a patch panel. The multiple connectors attach to the cables at one end and are mounted to the patch panel at another |
| 4958926 |
Closed loop control system for laser |
September 25, 1990 |
| A closed loop control system for a laser which is used in an instrument which may be an optical time domain reflectometer. The system uses the output light of the laser and the light from a fiber to which the laser light is connected to initially set the bias and pulse current amplitudes |
| 4958253 |
Line protector for a communications circuit |
September 18, 1990 |
| A line protector for a communications circuit provides at least overvoltage protection. The overvoltage protection is effected through a solid state arrester such as a diode. As the solid state arrester is not as long as the carbon electrode type or gas tube arrester which it replaces, t |
| 4955053 |
Solid state ringing switch |
September 4, 1990 |
| A ringing switch for providing ringing voltage and tripping voltage to the cable pairs of a telephone central office. The switch synchronizes the control signal from a cadence generator with the zero crossing of the ringing voltage to ensure that the voltage at the switch output changes |
