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| Number | Title | Issue Date |
| 7247804 | Switch for high voltage and/or current Electrical switch designed for high voltage and/or current and surrounded by a housing (2) divided into a first part (2′) forming a first compartment for taking up at least one switching device (3) and an appurtenant actuator device (4)... | 07/24/2007 |
| 6903295 | Fluid pressure operating apparatus for circuit breaker A fluid pressure operating apparatus, comprising: a fluid pressure cylinder for opening and/or closing a contact; control valves for use of open operation and/or closed-circuit, for bringing the fluid pressure cylinders into an opened-circuit operation and a closed-... | 06/07/2005 |
| 6875941 | Hydraulic operating apparatus for switch Disclosed is a hydraulic operating apparatus for switch with which it is possible to constantly obtain a stable interrupting performance at the time of high-speed successive operations. Closing and interrupting pressure accumulators comprise closing and interrupting... | 04/05/2005 |
| 6815629 | Hydraulic pressure actuating apparatus for circuit breaker In a hydraulic pressure actuating apparatus for a circuit breaker, contacts of the circuit breaker have a moving contact and a stationary contact for turning on/off current. A shaft, at an end portion of which is attached the moving contact, and at the other end of ... | 11/09/2004 |
| 6797909 | High-voltage loadbreak switch with enhanced arc suppression A high-voltage loadbreak switch operates submersed in a dielectric fluid and may be configured to switch one or more phases of power using one or more phase switches. Each phase switch may include first and second stationary contacts. The first stationary contact ma... | 09/28/2004 |
| 5483032 | High voltage load interrupter with safety system A high voltage load interrupter including an oil switch and a vacuum switch, an oil switch operating handle for manual operation of the oil switch, and a vacuum switch operating handle for manual operation of the vacuum switch, in which the oil switch ope... | 01/09/1996 |
| 4594488 | High-voltage electric switch with arc extinguishing device using self-generation of a quenching pressure A high-voltage electric switch is proposed comprising an arc extinguishing device using self-generation of a quenching fluid pressure. Inside a container there is formed a compression chamber surrounded by fixed main contacts cooperating with mobile main ... | 06/10/1986 |
| 4176385 | Explosively activated fault current limiter An explosively activated current interrupter is provided for use in a fault current limiting system employing a plurality of such interrupters. Each interrupter includes an automatic switching system for sequentially installing each of a plurality of the ... | 11/27/1979 |
| 4034175 | Protracted-blast electric circuit-breaker for alternating currents An electric circuit-breaker in which the arc extinction chamber is filled with liquefield SF6 under pressure. The moving contact of the circuit-breaker cooperates with a blast-piston which, during opening of the breaker and after the moving contact has re... | 07/05/1977 |
| 3985988 | Electric circuit breaker assembly A circuit breaker assembly is provided with a pair of contact elements defining therebetween an arc site across which an arc is struck upon separation of the contacts to break the circuit within which the breaker is connected. A compressed gas contained w... | 10/12/1976 |
| 3964338 | Pole unit mechanism for closing the contacts in an oil circuit breaker A circuit breaker of the oil type having an operating mechanism for providing an improved force operation of the contact lift rod. The mechanism includes a linkage arrangement with a scissor-type toggle to provide a mechanical advantage for increasing the... | 06/22/1976 |
