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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...
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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...
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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...
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4101748 |
Modular puffer-type circuit-interrupter unit adaptable for different voltage and current ratings
An improved modular, puffer-type circuit-interrupting unit is provided capable of its own independent support, and adaptable for use, either as a singular modular unit, or when used with a...
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4095068 |
Stationary-contact-and voltage-shield assembly for a gas-puffer-type circuit-interrupter
An improved, multi-function, stationary-contact-and-voltage-shield structure is provided for a high-voltage gas-puffer-type circuit-interrupter, in which the surrounding metallic shield provides a...
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4041264 |
Operating device for a contact device for a pre-insertion resistor in a high-voltage circuit breaker
For rapid on-off operation of a contact device for a pre-insertion resistor in a high voltage compressed gas circuit breaker, the operating device includes a piston movable in a cylinder and...
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4029922 |
Operating device for enclosed high voltage circuit breakers
An operating device for a high pressure circuit breaker enclosed in an elongated casing filled with compressed gas with a high-pressure chamber and a low-pressure chamber includes a driving...
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4016384 |
Operating mechanism and position indicator for a circuit interrupter
An improved circuit-breaker position-indicator is provided for a gas-type circuit-interrupter in which the circuit-breaker structure is enclosed within an outer pressurized casing at a different...
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3987262 |
Puffer-type gas-blast circuit-interrupter having variable-area stationary composite piston structure
A puffer-type gas-blast circuit-interrupter is provided having an operating cylinder movable over a fixed composite piston structure, the fixed composite piston structure providing a variable...
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3984648 |
Circuit breaker actuating device
A circuit breaker actuating device comprising valve means interposed between a high pressure section of an operation fluid and a low pressure section thereof to preclude communication therebetween...
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3943777 |
Operating apparatus for circuit breaker
A circuit breaker operating apparatus comprising an operating piston connected to an operating member for operating a breaking section, holding means for mechanically maintaining the...
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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...
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3928738 |
Coupling arrangement for a compressed-gas circuit breaker equipped with a hydraulic drive
A coupling arrangement is provided for a compressed-gas circuit breaker such as a high-voltage power breaker or the like having a contact system mounted in a gas-containing enclosure. An actuator...
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3908106 |
Valve and piston operative means for a circuit breaker
A device comprising an operating piston disposed at one end of an operating rod for operating a circuit breaker, a cylinder for guiding the operating piston in its sliding movement, a circuit...
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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...
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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...
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3816800 |
PROTECTIVE SYSTEM FOR SERIES CAPACITORS
A protective system for series capacitors including a bypass switch device having pneumatic latching means to normally hold the switch in open position, with an improved pneumatic control system...
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3806679 |
ACTUATOR FOR POLE-MOUNTED SWITCHES
A housing secured to a power pole encloses a hydraulic ram movable between two extreme positions An exterior vertically translatable operating rod is connected at its lower end to the ram and...
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3784771 |
HIGH-VOLTAGE PISTON ACTUATED SWITCH WITH ROTATIONAL SYMMETRY AND LIGHT BEAM INDICATING MEANS
A metal-clad, high-voltage switchgear assembly is disclosed for an electrical conductor wherein the rotational symmetry of the electric field of the conductor is maintained. The switchgear assembly...
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3766343 |
HIGH POWER HYDRAULIC CONTROL SYSTEMS FOR AN ELECTRIC SWITCH
The invention relates to hydraulic control systems for operating movable members, particularly of electric switches, which require large instantaneous forces. A functional assembly includes power...
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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...
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3745280 |
PRESSURE-OPERATED ELECTRICAL HIGH VOLTAGE CIRCUIT BREAKER
A receiving vessel for displaced hydraulic fluid is positioned at the cylinder of the drive mechanism of an electrical circuit breaker having a hydraulic drive. The receiving vessel is connected...
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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...
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3728508 |
OPERATING MECHANISM FOR VACUUM CIRCUIT BREAKER INCLUDING CONTACT PRESSURE SPRINGS
A circuit breaker contains a pair of series-connected vacuum interrupter units which are coaxial with one another and spaced from one another. An operating mechanism is disposed between the vacuum...
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3674955 |
CIRCUIT BREAKER WITH HYDRAULIC OPERATING MECHANISM FOR VACUUM INTERRUPTER
A vacuum circuit breaker comprises three vacuum circuit interrupters, each having a pair of separable contacts therein, which are opened and closed by an operating mechanism. The operating...
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3660625 |
SYNCHRONOUS-TYPE CIRCUIT BREAKER HAVING TWO INDEPENDENTLY-OPERABLE MECHANISMS
A fluid amplifier is utilized to operate the secondary or synchronous contacts of a circuit breaker having main or non-synchronous contacts and secondary or synchronous contacts, which are...
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3655931 |
SYNCHRONOUSLY OPERATING CIRCUIT BREAKER WITH IMPROVED CIRCUIT BREAKER OPERATING MECHANISM
A circuit breaker has normally closed main contacts and normally open secondary or synchronous contacts. For low current interruption, the main contacts open the circuit. When a high fault current...
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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...
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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...
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3622726 |
GAS BLAST CIRCUIT BREAKER WITH CONTACT CLOSING LOW PRESSURE RESPONSIVE SAFETY DEVICE
A gas blast circuit breaker having a safety device which causes the positive closing of the contacts of the opened circuit breaker according to the normal closing cycle and the locking of the...
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3597557 |
COMPRESSED GAS ACTUATED ELECTRICAL SWITCH WITH SLEEVE VALVES
An electrical circuit breaker of the gas blast type includes a double-acting cylinder having the piston element connected to one of the contact members for opening and closing the circuit through...
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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...
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3551621 |
CONTROL FOR MONITORING PRESSURE IN A GAS BLAST CIRCUIT BREAKER
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3448229 |
SNAP-ACTING PRESSURE OPERATED SWITCH DEVICE WITH MAGNET CONTROL
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3381102 |
Synchronous-type hydraulic operator for alternating current synchronous type circuitinterrupter
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3377511 |
Quick-acting switch arrangement for a high tension transformer
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3371746 |
Energy storage mechaninsm for actuating circuit breakers and the like
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3364328 |
Fluid pressure actuated electric power circuit breaker
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3356808 |
Circuit-interrupting devices having pressure-operated contacts
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3349207 |
Actuating mechanism for electric circuit breaker comprising a rod solely in tension in all positions thereof or solely under compression in all positions thereof
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3345487 |
Hydraulically operated circuit breaker
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3336453 |
Means for controlling the blast valve and contacts of a gas blast circuit breaker
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3336454 |
Means for controlling the blast valve of a gas blast circuit breaker
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3334202 |
Manually-controlled circuit breaker tripping arrangement
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3333077 |
Compressed-gas circuit breaker having contacting interrupting and isolating contactswith sequential operation
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3300610 |
Anti-restriking oil circuit breaker having an anti-cavitation device
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3286066 |
Gas blast circuit breaker with spring mounted hollow contact member and associated exhaust valve controlled thereby
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3281561 |
Circuit breaker with circulating oil arc quenching means
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3277262 |
Interchangeable contact arrangement for electrical circuit breakers
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3272939 |
Single or three-phase load-breaking switch with permanent magnet actuator assembly
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