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| Number | Title | Issue Date |
| 4229723 | Diaphragm having a pattern of reduced thickness in a high voltage, circuit-interrupting device An improved circuit-interrupting device of the type which includes an arcing rod which is moved away from a stationary contact in response to an overcurrent through the device. The device includes a container of pressurized dielectric fluid having a port ... | 10/21/1980 |
| 4225762 | Gas blast circuit breaker A gas blast circuit breaker having a movable contact, a mating contact and a nozzle aperture through which the movable contact can travel; the nozzle aperture is disposed in a wall dividing the switching chamber and the wall supports an arc during switchi... | 09/30/1980 |
| 4221942 | Apparatus and method for quenching an arc in a gas flow circuit An apparatus and a method for quenching an arc in a gas flow circuit breaker having both a permanent current contact and an arc contact system, wherein the motion of the contacts is made current dependent, thereby delaying or accelerating the duration of ... | 09/09/1980 |
| 4181837 | Compressed-gas circuit interrupter having insulated contacts A compressed-gas circuit interrupter characterized by at least one pair of separable contacts, each contact being tubular and having a tubular insulating liner on the inner surface thereof, each liner being recessed from the open end of the contact to pro... | 01/01/1980 |
| 4146763 | Compressed gas circuit breaker A compressed gas circuit breaker is disclosed. The breaker comprises two fixed hollow contacts which are bridged by a tubular bridging contact member when the breaker is in the closed position. A blasting means provides compressed gas for quenching the ar... | 03/27/1979 |
| 4131775 | Compressed-gas circuit-interrupters of the puffer-type having improved supporting, shielding and assembly features An improved compressed-gas puffer-type circuit-interrupter is provided having improved supporting, shielding and assembly features for making ready provision for a separate bench subassembly of the gas-interrupter module, and enabling its ready applicatio... | 12/26/1978 |
| 4112276 | Compressed-gas circuit-interrupter having a sleeve-valve for temporarily blocking the orifice throat An improved compressed-gas-type of circuit-interrupter is provided having a pair of separable contacts and a cooperating nozzle structure, through which the established arc is drawn. A spring-biased sleeve-valve surrounds at least one of these separable c... | 09/05/1978 |
