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7701688 |
Structure for installing lightning arrester for electric pole
A structure for installing a lightning arrester between the cross arm mounted to the upper end of an electric pole and a power line is disclosed. A dead end clamp, the lightning arrester and an...
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6492894 |
Coaxial fuse and protector
A protective device for excess current utilizes a fuse that incorporates a printed circuit board. The printed circuit board has a trace on one side which is of a desired width, length, and...
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6307462 |
Low profile mount for metal oxide varistor package with short circuit protection and method
A low profile mount for a disc varistor. A thermally sensitive switch is provided both for single and multiple electrode embodiments. The switch may be placed in a shorting circuit and include a...
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6204746 |
Thermal overload mechanism
A thermal overload mechanism for providing protection to tip and ring conductors in a telecommunications system in the event of a power cross occurrence of telephone lines with power lines. The...
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5952910 |
Isolator device for arrester
A device for connecting, and then isolating and disconnecting an arrester includes a non-conductive housing with two electrical terminals. The housing has opposite ends separated by an internal...
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5844785 |
Protector device with isolated ground connector
Disclosed is a protector device designed for insertion in connecting blocks. The device includes a ground connector which has a detent on one end for receiving a ground bar from the connecting...
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5805070 |
Device for indicating a destroyed arrester
A system for registering a malfunction in telecommunications equipment comprises a protective device including a terminal connector pin and a ground pin connected to ground. The system also...
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5644465 |
Surge arrester with external short-circuit device
In a three-electrode surge arrester where the center electrode (3) is provided with a connecting wire (6) that projects outward radially and is provided with an outside short-circuit device, the...
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5561582 |
Failsafe device for use with electrical surge suppressor
A failsafe device is shown in which a solid state surge suppressor (12) is mounted thermally coupled to a heat transfer element (42). A shorting bar (60) is attached to element (42) by a thin layer...
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5508675 |
Miniature gas tube assembly with back-up air gap
A miniature overvoltage protection device including a back-up air gap for use in miniature telephone modules and related equipment includes a generally U-shaped bracket adapted to receive an...
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5424901 |
Sidactor fail-safe device
An improved fail-safe mechanism is provided for use with a sidactor for protecting telecommunication equipment against high voltage surges. A sidactor includes first and second end terminal pins...
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5398152 |
Overvoltage protector
An overvoltage protector for protection of telecommunication equipment having a pair of line terminals, and a respective pair of levers forming part of the ground circuit, with an overvoltage...
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5371648 |
Plug-in protection module for a module for rapid interconnection of telephone lines
This invention relates to a protection module provided to receive an overvoltage arrester in a receptacle and designed to plug on the protection ring of a telephone line interconnection module. The...
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5359657 |
Telephone line overvoltage protection apparatus
An overvoltage protection apparatus used with a pair of telephone lines includes first voltage clamping circuitry for clamping voltage signals on the lines at a first predetermined voltage...
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5357568 |
Telephone line overvoltage protection method and apparatus
A telephone line overvoltage protection method and device are provided. An overvoltage protection apparatus used with a pair of telephone lines includes first voltage clamping circuitry for...
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5248953 |
Thermal overload protection device for electronic components
A thermal overload protection device for electronic components, in particular for the telecommunication and data technology. The overload device has a spring-elastic shorting link 6 and a melt...
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5247273 |
Surge absorber for protection of communication equipment connected to communication lines
A surge absorber including a surge absorbing element for protecting communication equipment from transient surges and a thermal response switch with an automatic restoration function connected in...
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5224013 |
Miniature station protector modules
A miniature station protector module for communication systems includes a hollow housing into which is disposed a pair of line terminals with a ground terminal therebetween. The line terminals...
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5195015 |
Line protector for a communications circuit
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...
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5157580 |
Protective plug for connector banks of telecommunication and data systems
The invention relates to a protective plug (1) for connector banks (20) of telecommunication and data systems, comprising a housing (2) for receiving protective elements (7, 8, 9) connected to...
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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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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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5027100 |
Gas tube fail safe device for telephone protector modules
A gas tube fail safe device for use in individual subscriber circuit telephone mmodules and related equipment, in which a fusible element is adapted to by-pass the conductive function of the gas...
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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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4980909 |
Protector module for laminar type telephone blocks
An individual telephone subscriber circuit module for use with laminar type connector blocks employing conventional three-element gas tubes of diameter greater than the thickness of an individual...
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4912592 |
Gas-filled surge arrestor
A gas filled surge arestor has at least one external air back-up gap comprising two spaced electrodes(7a,2 or 7a,3), one (7a) of which has at least one sharp edge or corner (9) adjacent the other...
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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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4887183 |
Communication system thermoprotection device for over voltage suppressor mounted in overvoltage suppressor magazines of communication systems
A thermal protection device for overvoltage suppressor which includes spaced contacts 6 mounted in overvoltage suppressor magazines 11 of communication systems. A bow-type spring 3 and a melt...
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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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4876626 |
Central office protector module with alarm indicator
A central office protector module which includes a light to provide a visual indication whenever the module shorts either of the lines protected by the module to groud as a result of either a...
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4866561 |
Lightning arrester device comprising at least one fusible element
The lightning arrester device comprises an external metal casing (1) defining an enclosure (2) containing a neutral gas, and at least one metal rod (3a, 3b) forming an electrode and penetrating...
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4866562 |
Self-contained air gap assembly
A self-contained air gap spark arrester assembly is disclosed which may be constructed and tested prior to its incorporation into a fail-safe surge arrester assembly. The air gap spark arrester...
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4866563 |
Transient suppressor device assembly
A transient suppressor device assembly having at least two electrical components and a fail-safe clip. The fail-safe clip has means for simultaneously providing the necessary electrical conductive...
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4794362 |
Alternating current power circuit and fuse therefor
A fuse for an alternating current power circuit. The fuse comprises an input terminal (4), a first contact (5) electrically connected to the input terminal, an output terminal (9) and a second...
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4737880 |
Station protector for communications lines
A station protector for communication lines includes a line terminal formed for electrical connection to the communication lines and affixed to a base member of electrical insulator material. The...
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4736269 |
Voltage surge limiter with grounding assembly
A protector module (30) for protecting the conductors of a telephone loop cludes a pair of protector assemblies (40-40') which are supported within a common housing (32). A gas tube voltage...
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4733325 |
Electrical protective devices
A protector module (30) for protecting tip and ring conductors of a telepe loop includes a pair of protector assemblies (40--40') which are supported within a common housing (32). A voltage...
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4730229 |
Male base subscriber circuit protector module
A male base subscriber pair protector module in which substantially all of the internal components thereof are assembled upon an axially elongated base element prior to insertion within a module...
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4717902 |
Electrical components incorporating a temperature responsive device
An electrical component comprising a temperature responsive device including an electrically conducting member (1) of spring temper in contact with a thin insulating coating (3) of a substance...
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4675778 |
Overload protector for communications systems
A protector for telephone systems and similar systems is in the form of an elongate housing formed by two hollow box-like members, one fitting within the other. In the bottom member, a line...
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4654619 |
Module for the protection of multiwire lines against overvoltages
A module for the protection of multiwire lines against overvoltages comprises a casing formed by a receptable and a terminal carrier plate. The terminal carrier plate comprises a pair of terminals...
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4649456 |
Three element gas tube protector module
A three element gas tube type subscriber pair protector module in which the gas tube serves as both a momentary surge protector and a heat responsive means directly operable upon a pair of fusable...
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4641218 |
Protector with circuit disabler
In response to spurious signals in a circuit connecting telecommunications equipment with a serving central office, the signals will pass through terminals of a protector module and through a...
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4633360 |
Station protector
A station protector for communication lines includes an electrical conductor formed for connection to the communications lines and affixed to a base member, a grounding means affixed to the base...
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4594635 |
Overload protector for communication systems
A protector module, or assembly, for telephone lines and similar systems, has line terminals and a ground terminal in the base. The line circuit is between a related pair of line terminals. The...
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4587588 |
Power line transient surge suppressor
A power line transient surge suppressor circuit features a nonlinear surge-bypassing network connected to bypass line surges around electrical loads connected to circuit output terminals. A fuse is...
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4573100 |
Telephone two element gas tube protector module
An improved telephone protector module for individual subscriber circuits of generally planar configuration, and having heat-sensitive means employing a solder pellet which, upon melting, flows...
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4535379 |
Telephone protector module with auxiliary fusible element
A subscriber pair protector module of gas tube type in which the heat coil assembly is supplemented by the provision of a planar fusible member placed in direct contact with the gas tube elements...
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4502088 |
Line protector for a communications circuit
A line protector for a communications circuit provides overvoltage and overcurrent protection. The overvoltage protection is attained through an arrester that provides an arc gap from the line to...
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4500862 |
Power source isolator
A self-contained device to protect electrical appliances from damage or destruction caused by abnormal power surges due to lightening and other causes is plugged into any household electrical...
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