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7138597 |
Circuit breaker with arc gas propelled movable contact and opposed arc cutoff shutters
The support for the moving contact of a circuit breaker has a piston that is driven by arc gases generated by initial separation of the contacts through magnetic repulsion to rapidly open the...
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6414256 |
Current limiting circuit breaker
The present invention provides a current limiting circuit breaker having a current responsive device for opening a pair of contacts or switch upon short circuit conditions. The current responsive...
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6229426 |
Circuit breaker having selected ambient temperature sensitivity
A circuit breaker (10) is shown having a movable electrical contact (36) adapted to move into and out of engagement with a stationary electrical contact (38, 40). A current carrying thermostatic...
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6084193 |
Electrical circuit interruption device having improved arc extinguishing apparatus including an arc paddle
A circuit interrupter in the form of a circuit breaker (10) is shown having a movable contact (14a) which moves between contacts engaged and contacts disengaged position relative to a stationary...
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5126517 |
Arc suppressing current interrupter
A current interrupter in which a first movable, insulating, gear carries a contact blade. The blade extends out from this movable gear and forms a contact which makes and breaks with a stationary...
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5023415 |
Switch apparatus
A switch apparatus for use in a distribution system, having a case, a pair of bushings arranged on the case so as to oppose each other, and a breaker arranged in the case such that breaking and...
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4943691 |
Low-voltage limiting circuit breaker with leaktight extinguishing chamber
A current limiter comprises an extinguishing chamber 16 of small volume, in which there are housed a pair of contacts 28, 30 and an insulating shield 40, capable of moving to an active position...
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4935165 |
Method for preventing the poor conduction at electrical switch contacts which is caused by organopolysiloxane gas
The poor electrical conduction at an electrical switch contact caused by organopolysiloxane gas can be prevented by providing that a nitrogenous base gas be simultaneously present with the...
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4880948 |
Contactor device for circuit breaker
A contactor device for a circuit breaker includes a stationary contactor having a stationary contact, and a stationary conductor secured with the stationary contact and constituting an electricity...
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4849591 |
Protection cutting apparatus provided with an arc breaking screen
Electromechanical protection cutting apparatus comprising a magnetic tripping device and an arc-breaking screen which may be interleaved between at least one fixed contact and one movable contact...
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4801772 |
Current limiting circuit interrupter with insulating wedge
A current limiting circuit interrupter with insulating wedge characterized by a circuit interrupter structure within an insulating housing and having a mechanism for opening and closing separable...
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4788392 |
Tank type gas circuit breaker
A tank type gas circuit breaker for a three-phase alternating current, comprises: three hollow members spaced in parallel with each other; a single stationary side end plate air-tightly fixed to...
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4752660 |
Current limiting circuit breaker with an arc shearing plate
A circuit breaker includes an arc shearing plate which is driven to thrust between a pair of contacts being separated so as to shear an arc formed therebetween for rapid arc extinction. Included in...
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4751483 |
Electric switch for protection appliances such as a cut out
An electric switch protective apparatus is provided having a mobile contact which may be separated from a pseudo-fixed contact to which it is applied, either through the movement of coupling means...
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4727230 |
Safety switch for inductively driven electromagnetic projectile launchers
A safety switch for use in an inductively driven electromagnetic launcher system includes three tubular conductors each having a substantially cylindrical internal surface, wherein these internal...
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4716266 |
Electrical arc quenching chamber, in particular for fluid-quenched circuit breakers
The present invention relates to an electrical arc interruption chamber, in particular for fluid-quenched circuit breakers, in which, inside a tightly sealed insulating encasing, containing an...
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4700030 |
Switch device having an insulating screen inserted between the contacts during breaking
An electric switch in which a screen is inserted very quickly between two contacts at the moment when they part. The energy of the arc generated between the contacts inside a volume surrounded by...
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4692577 |
Switch for a high-voltage interrupting module
An energy-absorbing element is provided between an insulative piston and a movable contact of a switch for a high-voltage device. In arrangements where a fusible element is in electrical shunt with...
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4691085 |
High voltage interrupting switch with improved contact connection arrangement and method
An improved high-voltage interrupting switch or interrupter and method of assembly and operation thereof is provided. The switch is of the type including a pair of contacts which are normally...
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4647741 |
Switching device with antiarcing screen
The disclosure relates to a switching device which comprises a casing provided with an input terminal, an output terminal and, therebetween, an electric circuit including at least two separable...
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4635022 |
Fuse cut-out cartridge
A fuse cartridge for example of the cylindrical type comprising an insulating cylindrical body ending in two conducting end pieces and a fuse element connected electrically to the end pieces,...
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RE32321 |
Electric switch and improved device using same
A high speed switch usable at high voltage includes a pair of contacts movable apart along a fixed line. When the contacts are normally interconnected, at least one of them contributes to the...
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4631508 |
Electro-mechanical devices incorporating fuse cartridges
An electro-mechanical circuit breaker device incorporating a fuse cartridge, wherein two contact bars are normally connected by a series of mobile contacts held against their lower edge by springs,...
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4596911 |
Combined device for on-load breaking and visible isolation of an electric circuit
A combined isolating switch-circuit breaker comprising at least one fixed contact breaking element, one fixed isolating contact element and at least one mobile assembly comprising a mobile contact...
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4594489 |
Electrical switching element
The load-isolating switch comprises two coaxial electrodes 1 and 2, which are mechanically connected by an interposed insulator 3. A cam 4 is provided on the insulator 3 and is spanned by at least...
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4572933 |
Pressure-operated switch for a high-voltage interrupting module
An improved switch for a high-voltage device in which ignition of a power cartridge moves an insulative piston located in a conductive member away therefrom and into a passageway in an insulative...
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4553008 |
Load interrupter
An load interrupter is disclosed having the characteristics of an ordinary puffer interrupter and a self-extinguishing gas flow interrupter. The load interrupter comprises a generally hollow...
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4536630 |
Limiting switch
A current limiting switch is provided comprising two mobile levers subjected to the action of springs which apply, one against the other, separable contact pieces placed at the respective ends...
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4534263 |
Electromagnetic launcher with high repetition rate switch
An electromagnetic projectile launcher is provided with a cartridge-type switch for commutating current from a high current source to a pair of generally parallel conductive rails. A conductive...
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4510360 |
Circuit breaker with arc shield
A circuit breaker with an arc shield characterized by a movable contact assembly which is rotatable between open and closed positions with respect to stationary contacts, and a cylindrical arc...
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4467298 |
Automatic short-circuit current limiting device
A device is provided comprising a simple means for holding the contacts apart and insulated from each other after circuit breaking. A screen formed by an insulating plate of small thickness, is...
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4458225 |
Circuit breaker with independent magnetic and thermal responsive contact separation means
A molded case circuit breaker having a movable contact arm (12) pivotally supported on a operating handle (4) and driven into and out of engagement with a stationary contact (6) by an overcenter...
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4443675 |
Multiple contact arrangement
A multiple contact arrangement for electromagnetic switchgear is disclosed. The contact arrangement comprises a movably guided contact bridge carrier which holds spring-loaded contact bridges in...
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4426562 |
Rotary switch for switching very large DC currents
The cylindrical rotor of a switch for switching very large DC currents has a conducting element extending arcuately over a portion of its cylindrical surface and axially therealong. Two stationary...
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4342978 |
Explosively-actuated switch and current limiting, high voltage fuse using same
A high speed high voltage electrical switch opens a current path in which the switch is included. The switch includes first and second normally electrically interconnected contacts which normally...
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4329554 |
Loadbreak arc snuffing device
An arc snuffing device for use on high voltage circuits during loadbreaking operations, the device including an arc quenching tube biased for movement over an electrical contact and an arc...
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4104238 |
Silica-alumina trihydrate filled epoxy castings resistant to arced SF.sub.6
A cured, insulating, casting composition, having a coefficient of linear thermal expansion of below about 38 × 10 -6 in./in./° C and being resistant to arced sulfur hexafluoride gas, in contact...
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3929660 |
Arc-extinguishing materials
Arc-extinguishing materials are selected in accordance with criteria such as first ionization potential of each of the constituents, carbon content, boiling, sublimation, or decomposition...
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3842228 |
CIRCUIT BREAKER ASSEMBLY WITH INTERPOSED WEDGE NON-CONDUCTOR AND COMPLEMENTARY HOUSING ARC-PREVENTION STRUCTURE
A compact non-arcing switch which includes a housing which is constructed dielectric material. A pair of electrical contacts are mounted within the housing for movement between open and closed...
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3732517 |
PROTECTIVE FUSE
A load break protective fuse assembly having arc snuffing means. The arc snuffing means seals the lower contact structure of the fuse assembly, when the fuse member is withdrawn, to prevent the...
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3715543 |
ROTARY ELECTRICAL SWITCHING CONTACT ASSEMBLY WITH HOLLOW INSULATING ARC BARRIER
An electrical switching contact assembly having a housing with stationary contacts mounted thereon, and a rotating shaft with movable contacts attached thereto. The rotating shaft is mounted within...
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3671697 |
SWITCH CONSTRUCTION WITH LOAD BREAK DEVICE HAVING A MOVABLE SLAT, A GAS EXPANSION CHAMBER AND A GAS MUFFLER
Switch construction for power distribution alternating current circuits having a switch blade for pivotal movement into and out of contacts enclosed by an insulating housing having a slot through...
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3586802 |
LOAD BREAK DEVICE WITH ARC-EXTINGUISHING MATERIAL
High voltage arc-interrupting load break device with gas-actuated apparatus for closing the contacts of the device incorporates gas-evolving arc-extinguishing material comprising cycloaliphatic...
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3576967 |
SWITCH CONSTRUCTION WITH LOAD BREAK DEVICE HAVING ONE OR MORE MOVABLE SLATS WITH HEAT SPACERS
A rotatable switch blade engages and disengages stationary contact assembly through a slot in a generally sector-shaped insulating housing enclosing the contact assembly and formed by either a pair...
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3549840 |
SWITCH CONSTRUCTION WITH LOAD BREAK DEVICE
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3482070 |
VACUUM D.C. BREAKER WITH RELATIVE CONTACT MOVEMENT INTERPOSING A NON-CONDUCTOR TO EXTINGUISH ARC
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3451019 |
ARC PREVENTING MEANS FOR A SWITCHING RELAY
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3422455 |
CIRCUIT BREAKER WITH CONDUCTIVE AND INSULATING PARTICLES
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3402272 |
Dual path current limiting circuit breaker
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3389237 |
Load break and isolating circuit interrupter
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