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5144510 |
Conductive pedestal for use with solid state overvoltage arrester
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...
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5142434 |
Overvoltage arrester with air gap
For reducing the engineering cost of construction and manufacture for the air gap associated with the second electrode in an overvoltage arrester with air gap connected in parallel, the arrester...
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5138517 |
Polymer housed electrical assemblies using modular construction
An electrical device comprising a plurality of electrical assemblies formed as interchangeable modules, aligned in an end-to-end serial array and enclosed in a polymeric weathershed housing, the...
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5122921 |
Device for electromagnetic static and voltage suppression
A device for suppressing electromagnetic static and voltage surges induced on radio frequency transmission cables is disclosed. The device comprises a blocking capacitor connected to prevent the...
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5101317 |
Overload protector for telecommunications systems
An overload protector for a telecommunications system with an overcurrent protection device for each signal line in a chamber formed between a housing and a base and in which the base carries the...
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5101180 |
Bidirectional communication line filter and surge protector
This invention relates to a communication line filter for use in series with communication lines. The communication line filter provides for surge protection from voltage spikes and provides...
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5077630 |
Integrated services digital network terminating resistor with line fault protector
An integrated services digital network terminator for use in an ISDN network and assosicated peripheral apparatus comprised of a first electricl connector in electrical communication with a...
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5067915 |
Plug-in component
A diode plug-in component for a contact strip includes a housing having contact elements, at least one locking flat plug receptacle and longitudinal holes whose openings are arranged on the surface...
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5067045 |
Output protection scheme for unipolar constant current source
A protection circuit for the output stage of an operational amplifier may utilize two diodes and two resistors. A circuit for protecting electronic components from the voltage on the cable has an...
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5057964 |
Surge protector for telecommunications terminals
A surge protector, particularly for protecting components in a telecommunication system, has a thin ceramic substrate on a surface of which is formed a surge protector resistor having a spiral...
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5050033 |
Back-up surge arresters
A back-up surge arrester is combined with a conventional gas filled surge arrester in axial alignment. The size of the air gap is held to a predetermined distance by aid of the mechanical...
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5043838 |
Modular electrical assemblies with pressure relief
A modular electrical assembly is enclosed in an elastomeric weathershed housing, and has a plurality of electrical components aligned in a row and in electrical connection with one another via...
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5034846 |
Plug protector
A terminal connector or plug protector is selectively configurable for coupling or coupling and protecting an electronic communication circuit to a communication line. The plug protector has a...
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5034622 |
Power supply interface apparatus for communication facilities at a power station
A power supply board for connecting dry communication lines from a remote station to the electronic equipment at a power station and includes a brushless PM motor mounted in a motor section of the...
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5031067 |
Five pin protector module for telephone circuits
A five pin protector module for telephone circuits comprises two input pins, two output pins and a grounding pin, all on an insulative base. The electrical current path between each input pin and...
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5029302 |
Fail safe gas tube
A fail-safe arrestor for electrical circuits utilizes a gas-filled tube to conduct at an over-voltage and also provides a clip to solidly couple the circuit to a ground lead at the melting from...
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5025345 |
Overload protector module and building entry protector with integrally molded modular jack
Overvoltage protector module having a modular jack mounted upon the module housing in a position remote from a base of the module which carries line and ground terminals. Conveniently, the modular...
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5008772 |
Telephone circuit protector module having plural circuit grounding means
An improved telephone subscriber circuit protector module providing plural surge voltage and excess current protection elements including so-called sneak current protection. The module includes a...
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5003588 |
Circuit arrangement for protecting electronic interface circuit of subscriber line circuits
Thyristors utilized as protective elements receive trigger current by way of a respective semiconductor switch having a control electrode thereof coupled to a supply battery. The supply battery...
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5003579 |
System for connecting computers via telephone lines
A system for connecting a plurality of computers and computer peripherals into a network using two unshielded lines of the type included in a telephone cable. A floating ground isolation circuit is...
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4999731 |
Surge protector for telecommunications systems
A surge protector, particularly for protecting components in a telecommunications system, has a thin ceramic substrate on a surface of which is formed a surge protection resistor having a...
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4993960 |
Grounding system and clamp
A system and clamp provides a common system for grounding a telephone system and an electrical power system. The clamp is secured to an electrical meter box and the clamp is connected through a...
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4991051 |
Protection arrangements for communications lines
A protection arrangement for a two-wire line, such as a telephone subscriber line, includes a transformer having two primary windings and a secondary winding. The primary windings are connected in...
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4979071 |
Protection circuit for a semiconductor circuit
A protection circuit for a semiconductor circuit for protecting it from a thunder surge and overcurrent or overvoltage. A surge absorbing element and a Zenor diode are in parallel connected to the...
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4964160 |
Protector device
A Protector device 20 connectable between a subscribers line pair and the telephone exchange includes a protector P1 comprising a pair of foldback diodes and fuses F1 and F2 in series with the...
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4958253 |
Line protector for a communications circuit
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...
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4954923 |
Intrinsic safety module interface
An interface system interconnects a common power supply and plural data communications paths located in a safe environment to a plurality of load devices located in a flammable atmosphere. A module...
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4953055 |
System and a protection and remote power-feeding device for equipment connected by two transformers to a four-wire transmission link
A remote power-feeding and protection system for equipment connected by two transformers to a four-wire transmission link. The remote power-feeding and protection system and the remote...
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4947427 |
Protection arrangement for a telephone subscriber line interface circuit
A telephone subscriber line is connected to a SLIC via contacts of an isolation relay. Line voltage on the line side of the relay contacts, and line current on the SLIC side of the relay contacts,...
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4944004 |
Interface circuit with transient event tolerance
An interface circuit provides for coupling of communications signals between a conductor of a transmission path, and a key telephone system and provides for protection against electrical energies,...
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4944003 |
Solid state telephone protector module
An individual subscriber circuit protector module employing solid state circuitry for protection against momentary voltage surges, and having firmly sensitive heat coil assemblies for protecting...
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4941063 |
Telephone lines overvoltage protection apparatus
Overvoltage protection arrangements are provided for a pair of telephone lines effective for suppressing noise and transient voltage signals occurring above data and voice signals carried on the...
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4937699 |
Frequency dependent fuse for a telephone circuit or the like
A sneak current protection device is disclosed including a series connected fuse, resistor and inductor for limiting the rate of current rise through the protective fuse whereby the fuse operates...
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4924346 |
Gas discharge surge suppressor for a telephone line
A gas discharge device is provided for protecting a telephone line from certain voltage surges. The gas discharge device provides low voltage surge protection from tip to ring but still retains...
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4924345 |
Combined transient voltage and sneak current protector
A combined transient voltage and sneak current protector is presented. The protector device comprises a two-piece substantially rectangular insulative housing. The housing has four spaced and...
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4922374 |
Lightning protector assembly
A lightning protector assembly for telephone circuitry and the like includes a housing formed of a lower necked terminal section and an upper expanded grounding section. A component-mounting member...
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4918565 |
Electrical surge suppressor
An electrical surge suppressor for use with a video satellite receiver system having an antenna, controls for positioning the antenna, a receiver, electrical conductors connecting the controls to...
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4905119 |
Solid state overvoltage protection circuit
An overvoltage protection circuit for electronic equipment having tip and ring lines includes a first voltage sensitive switch having first and second teminals. The first terminal of the first...
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4905275 |
Laminar type telephone protector block and interconnectable modular elements therefor
A laminar type telephone protector block of quick clip type including grounding means incorporated into the individual laminae, and a novel protector module of gas tube type communicating with said...
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4901188 |
Line protector with spring
A line protector module device for a communications circuit having a line protector circuit assembly including a base, a frame having a retaining portion, a spring mounted to the base, an arrester...
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4901189 |
Terminal block and methods of making
A terminal block (20) includes a plurality of wells each having a protector 32) disposed therein and each having a bore which communicates with a U-shaped terminal (60) so that a portion of the...
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4901190 |
Distribution arrangement for telecommunication apparatus
A distribution apparatus for telecommunication equipment wherein a contact component part is fastened on one side of a grounded bearing part and on the opposite side, a safety plug for the...
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4887180 |
Device for protecting electronic equipment against strong electromagnetic pulses, more particulary due to lightening
A device for protecting electronic equipment (42) against strong electromagnetic pulses, the equipment being contained in a radioelectrically insulated enclosure (40) and connected to a line...
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4882748 |
Homologated protector modules for telephone connector blocks
A series of individual telephone subscriber circuit modules for use with telephone connector blocks having flat insulation displacement clips projecting from a planar surface thereof. The block...
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4882647 |
Combination apparatus for clamping ground conductor and for mounting lightning protector
A combination apparatus is shown for clamping ground conducting means and for mounting lightning protecting means including an electrically conductive ground bracket formed integrally or of one...
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4881255 |
Protector module for quick clip terminal telephone connector blocks
An improved telephone subscriber circuit protector module particularly suited for use in interconnecting with protector blocks having exposed quick clip terminals on an exposed surface thereof. The...
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4878145 |
Surge/transient protector for a plurality of data lines
A surge/transient protector for an N-line data cable (e.g., N=16) or other group of N data lines having two data conductors and a return conductor for each line includes individual conductor...
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4878146 |
Line protector
A line protector. The protector has a conductive housing which has a surge arrester therein. The housing has an open end and a closed end. A nonconductive cap closes the open end to thereby form an...
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4876620 |
Protection devices and arrangements for telephone lines
A two-wire telephone subscriber line protection arrangement consists of two protection devices each comprising a pair of complementary thyristors connected in reverse parallel with one another...
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4876713 |
Signal circuit protector device for consumer use
A solid state protector device is disclosed for protecting a consumer's solid state electronic circuits from abnormal voltage and current surges. The device comprises an enclosure made of...
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