Quotables
"We are probably nearing the limit of all we can know about astronomy."
Simon Newcomb, astronomer ; 1888
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7964816 | Interrupting chamber having two compression chambers A current-interrupting chamber is filled with a dielectric fluid and includes a moving assembly. The moving assembly is mounted to move axially between a position at the start of a circuit-breaker opening operation and a position at the end of a circuit-breaker open... | 06/21/2011 |
| 7202435 | Circuit-breaker An exemplary circuit breaker includes at least one arcing chamber that is filled with isolating gas, extends along a longitudinal axis, is designed to be essentially radially symmetrical, contains an arc area and has at least two power contact pieces. At least one o... | 04/10/2007 |
| 6683267 | Gas-insulated switchgear device A gas-insulated switchgear device for high- and medium-voltage applications, comprising an enclosure which contains a disconnection unit which is electrically connected to a first electric terminal and is arranged in the enclosure in a substantially centr... | 01/27/2004 |
| 4604508 | Electric circuit breaker of the type using an arc quenching fluid with pressure self-generating due to the breakdown of the fluid In an electric circuit breaker of the type using an arc quenching fluid with pressure self-generating by the breakdown of the fluid due to the same arc, comprising, inside a tightly sealed insulating casing filled with the extinguishing fluid, in particul... | 08/05/1986 |
| 4546223 | High voltage metal-clad circuit breaker The column-shaped active part of a metal-clad circuit breaker is fastened at its upper part by stays to the metal tank. The stays show some elasticity, so as to exert a centering force on the column and oppose any excessive displacement when a shock or an... | 10/08/1985 |
| 4264795 | Switching device An outer arc extinguishing compartment is disposed coaxially with an inner arc extinguishing compartment and partly projects under one end thereof. A movable contact member extends through both compartments and separably engages a stationary contact membe... | 04/28/1981 |
| 4206331 | Self-generating fluid-blast single-break circuit-interrupter A self-extinguishing-type of fluid-blast circuit-interrupter is provided, of the single-break type, utilizing a plurality of pressure-generating chambers disposed in series relation, and compartmentalizing the extinguishing chambers so as to act transvers... | 06/03/1980 |
