Matches 101 - 150 out of 210 < 1 2 3 4 5 >
Match Document Document Title
4348565 Interchangeable chemically operated circuit breaker  
A circuit interrupter includes a pair of separable contacts, an operating mechanism for causing separation of the contacts, and a drive mechanism for causing movement of the operating mechanism....
4323743 Means for operating blast valve in two-pressure circuit breaker  
An improved limited-travel linkage for "cracking" a gas blast valve in a circuit breaker. A projection from a portion of the circuit breaker linkage travels along an arc in interfering relationship...
4317973 Disconnect switch and drive mechanism therefor  
A disconnect switch and drive mechanism therefor particularly adapted for use in gas insulated substations. The drive mechanism comprises a pair of parallel support members having a plurality of...
4270034 Puffer type circuit interrupter  
A circuit interrupter comprises a pair of contacts which can be relatively moved to be detouchable in a fluid for arc extinction; a pressure chamber which is connected to an arc space to contain...
4255632 Grounding switch for gas-insulated high voltage switchgear  
A grounding switch for gas-insulated, metal-enclosed high voltage switchgear in which a movable switch contact, in permanent connection with the grounded enclosure of the switchgear, and a movable...
4223592 Pneumatic operating-mechanism construction  
An improved pneumatic operating mechanism construction is provided including the usual stationary operating cylinder with a movable reciprocally-operable driving piston member movable therewithin,...
4209680 High speed actuating mechanism  
A high speed actuating mechanism for operating the contacts of a circuit interrupter has an operating shaft connected to the contacts and to an operating piston. The operating piston has a...
4199671 Puffer circuit breaker  
A puffer circuit breaker characterized by adjustable wall means for regulating the pressure of an arc-extinguishing gas between separating contacts.
4195211 Single pole trip and ganged pole closing for multiphase high-voltage power circuit breakers  
A high-voltage power circuit breaker contains a plurality of phases which are contained in respective separate tanks which may be filled with sulfur hexafluoride. Each phase contains a respective...
4166937 Hydraulically-activated operating system for an electric circuit breaker  
This operating system comprises a fluid motor having a piston, a breaker-opening space at one side of the piston, and a breaker-closing space at its opposite side. An accumulator freely...
4159498 Electric circuit breaker with high current interruption capability  
Current interruption capability for short-line or terminal faults is achieved by connecting a fluid blast interrupter in series with a high current vacuum interrupter capable of withstanding the...
4131774 Circuit interrupter operating mechanism  
A circuit interrupter characterized by a pair of separable contacts, operating means for opening and closing the contacts and operatively connected to the contacts, drive means for driving the...
4123635 Multi-pole high-voltage circuit-interrupter having independent pole tripping with a single common operating mechanism  
A multi-pole high-power circuit-interrupter is provided having a single common operating mechanism therefor, and having independent pole tripping operation by associating with at least one of a...
4118613 Hydraulically-actuated operating system for an electric circuit breaker  
This hydraulically-actuated operating system comprises a cylinder, a piston movable therein in an opening direction to open a circuit breaker, and an accumulator for supplying pressurized liquid to...
4110578 Circuit breaker  
A compressed-gas insulated circuit breaker including two spaced apart electrical conductors within a sealed housing, a stationary contact electrically connected to one of the conductors, and a...
4101746 Apparatus for controlling the drive for hydraulically actuated high-voltage power circuit breakers  
Apparatus for controlling the drive for an hydraulically actuated high voltage power circuit breaker is disclosed. More particularly, the apparatus includes a number of position signal transmitter...
4054765 Pin-joint coupling for three or more interrelated components  
A plurality of coaxial pins are cooperatively arranged to provide a pin-joint coupling for three or more interrelated components and provide the capability of removal of one component without...
4029923 Magnetizing current switch  
A magnetizing current switch particularly adaptable for use in gas insulated substations comprising a sealed housing including two spaced-apart electrical conductors and a movable contact for...
4016383 Sealing device for an assembly of elements of high-voltage cut-out devices  
Sealing device for an assembly of elements of high-voltage cut-out devices comprising on the one hand, a cut-out chamber containing mobile elements integral with contact rods and on the other hand,...
3930134 Pneumatic power-unit having a driving piston and an exhaust valve  
An improved pneumatic power unit is provided including a penumatic piston reciprocally operable within an operating cylinder housing, which, in one conceivable application, operates the contact...
3922512 Resistor switch synchronizing operating mechanism  
An operating mechanism comprising interacting linkage arranged to effect the closing of a resistor contact prior to the closing of a main contact and thereafter withdrawing the resistor contact....
3909571 Contact structure for high voltage gas blast circuit interrupter  
The cooperating stationary and movable contacts of a gas blast interrupter are each formed as elongated, tubular contacts which are slotted from one end to form contact fingers flexible at only one...
3903387 Gas-insulated switching apparatus  
A gas-insulated switching apparatus comprising a breaking section having at least a couple of mutually detachable contacts, a grounded tank containing the breaking section and filled with an...
3885113 Control for an electric circuit breaker with valve and piston operating means  
A control for the control-valve mechanism of an electric circuit breaker comprises means biasing the operating piston of said mechanism in a direction to effect circuit-breaker closing. Releasable...
3857006 GAS INSULATED SWITCHING APPARATUS  
A gas insulated switching apparatus having a simple construction and small size in which a circuit breaker unit is disposed within a closed vessel filled with an insulating gas so as to be movable...
3852548 ACTUATING MECHANISM FOR CONTACT AND BLAST VALVE UNIT  
Operating arrangement for synchronous actuation of a blast valve and main contact of the gas-insulated circuit breaker. The arrangement provides a close coupled high speed blast valve actuating...
3830994 DOUBLE BREAK HIGH VOLTAGE DISCONNECT SWITCH  
High voltage disconnect switchgear having a double break contact operation. The main movable contacts are slidably mounted radially within a rotating insulating carrier. The opening operation first...
3824361 HIGH-VOLTAGE ELECTRIC CIRCUIT BREAKER  
A high-voltage electric circuit breaker has two mutually oppositely movable contacts which cooperate with two stationary contacts, the movable and stationary contacts being positioned on a common...
3823286 HIGH-VOLTAGE CIRCUIT BREAKER EQUIPPED WITH HYDRAULIC DRIVE  
A high-voltage circuit breaker has contacts switchable between open and closed positions and is equipped with a hydraulic actuator operatively connected to the contacts. The actuator is responsive...
3748418 TANK-TYPE GAS-FILLED CIRCUIT BREAKER WITH IMPULSIVE SEAL BREAKING MEANS FOR INITIATING PISTON OPERATION  
A tank type gas-filled circuit breaker has interrupting contacts contained in a pressurized insulating gas filled chamber provided within a tank which in itself forms a low-pressure gas chamber the...
3745283 ELECTRICAL COMPRESSION SWITCH  
An electrical switch of the compression type wherein gas for arc extinction is compressed prior to disengagement of the contacts by movement of the driven contact itself includes a pair of contact...
3740506 FLUID OPERATED PISTON CIRCUIT BREAKER WITH FLOATING POSITION VALVE ACTUATOR  
A circuit breaker having an actuating system comprising a signal responsive valve member of large diameter and a making force imparting valve member of small diameter connected to each other by an...
3727109 TANK-TYPE GROUNDING AND TEST DEVICE WITH LINE, BUS AND TEST TERMINAL BUSHINGS  
A tank type grounding and test device is provided for metal-clad switchgear, which takes the place of the usual circuit breaker within the metal-clad switchgear housing. This equipment includes...
3715542 CONTROL MEANS FOR PNEUMATICALLY OPERATED HIGH VOLTAGE SWITCHING DEVICE  
A high voltage switching device is operated by a compressed gas valve having an electrodynamic operating means. The operating means comprises a stationary coil which is inductively connected to a...
3699289 OPERATING DEVICE FOR ELECTRIC SWITCHING APPARATUS FOR HIGH VOLTAGE  
In an operating system for high voltage gas blast circuit breakers, the opening impulse is transmitted from earth to high potential by means of an insulating tension rod. A high initial...
3683142 OPERATING MEANS FOR ELECTRIC SWITCHING APPARATUS FOR HIGH VOLTAGE  
In an operating device for high voltage gas blast circuit breakers, the opening impulse is transmitted from earth to high potential by means of an insulating tension rod. A high initial...
3674964 HIGH VOLTAGE ELECTRIC CIRCUIT BREAKER WITH RAPID RESPONSE TRIPPING MEANS  
A high voltage electric circuit breaker comprising a high potential tank mounted atop an insulating column. Opening of the circuit breaker is initiated by an operator located atop the insulating...
3674959 CIRCUIT INTERRUPTER CLOSING RESISTORS  
A fluid blast type electric circuit interrupter comprises a tank at ground potential containing compressed fluid (air). First and second hollow insulating columns are mounted on said tank in spaced...
3665135 METAL CLAD ISOLATOR SWITCHES FOR HIGH TENSION AND DOUBLE INTERRUPTION  
A metal clad isolator switch for high voltage and double interruption, comprising two permanently electrically interconnected mechanically coupled, axially movable switching rods directed in...
3662135 GAS SUPPLY SYSTEM FOR GAS BLAST CIRCUIT BREAKER  
An air blast circuit breaker requires two constantly available supplies of compressed air, one at low pressure (370 psi) and the other at high pressure (1,500 psi). An air compressor takes air at...
3659065 FLUID-BLAST CIRCUIT INTERRUPTER WITH DELAYED MOVING CONTACT TRAVEL  
A fluid-blast circuit interrupter is provided having a pair of separable contacts, the moving contact of which has two delayed periods during its opening travel, the first of which is during the...
3657495 HIGH-VOLTAGE DISCONNECTING SWITCH WITH SLIDING CONTACT  
A high-voltage disconnecting switch for establishing an electrical connection between two vertically spaced contacts by means of a movable contact capable of being moved in a vertical translation...
3649792 GAS-BLAST CIRCUIT BREAKERS  
A gas-blast circuit breaker comprising, within a switching chamber permanently filled with extinguishing gas under overpressure, a first and a second switching contact, the switching-off action of...
3646292 HIGH-VOLTAGE ELECTRIC CIRCUIT BREAKER WITH HIGH-SPEED TRIPPING MEANS  
Discloses a high-voltage circuit breaker comprising a control device at high potential operable to produce separation of the usual contacts of the breaker, an operator at ground potential for...
3639713 OPERATING MECHANISM FOR A CIRCUIT INTERRUPTER  
A dual-acting piston operable within an operating cylinder is mechanically connected to the moving contact structure of a circuit breaker. The piston has a portion constantly acted upon in the...
3624329 OPERATING MECHANISM FOR A CIRCUIT INTERRUPTER WITH TOGGLE MEANS CONTINUOUSLY IN UNDERSET CONDITION  
An operating mechanism for a circuit breaker is provided having a rotatable main lever, which is rotated to a closed position by an actuator, such as a piston, movable within a cylinder, and is...
3612799 GAS BLAST CIRCUIT INTERRUPTER USING MAIN MOVABLE CONTACT AS BLAST VALVE  
A high-speed gas blast circuit breaker in which SF 6 is used as the mechanical drive for the movable contact and as the dielectric medium for maintaining a high dielectric between the open...
3603752 GROUNDING-SWITCH DEVICE  
A grounding switch device is provided capable of utilizing the same type of mechanism as a circuit breaker, and adapted for substitution for the circuit breaker structure in metal-clad switchgear...
3596028 COMPRESSED-GAS CIRCUIT INTERRUPTER HAVING TWO COMPONENT CONTAINING LEGS UPSTANDING FROM A GROUNDED U-SHAPED HIGH PRESSURE TANK  
A compressed-gas circuit interrupter has a generally U-shape with interrupting elements, or terminal-bushing structures, disposed in the upstanding legs of the "U," depending upon the rating...
3590189 PNEUMATIC OPERATING MECHANISM FOR A CIRCUIT INTERRUPTER WITH PISTON DEVICE HAVING AN OPENING PISTON AND A CLOSING PISTON  
A circuit interrupter has a movable contact structure which is piston actuated. The operating piston rod has an opening piston and a closing piston secured thereto, so that upon entrance of...
Matches 101 - 150 out of 210 < 1 2 3 4 5 >