Quotables
"There is practically no chance communications space satellites will be used to provide better telephone, telegraph, television, or radio service inside the United States."
T. Craven, FCC Commissioner ; 1961
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 |
| 7262362 | High voltage device with a particle trap The high-voltage switching device used in one installation position and has metallic encapsulation (10) a switching gap (4) and a particle trap (1) for holding foreign body particles (2), and is characterized in that in the one installati... | 08/28/2007 |
| 4707576 | Arcing contact tip and method for producing such an arcing contact tip or a comparable component The arc withstanding electrodes in an electric circuit breaker for switching high voltages attain greater mechanical strength and improved arc withstanding capabilities by forming the arc withstanding electrodes of a carbon-fiber-reinforced-graphite mater... | 11/17/1987 |
| 4700028 | Portable breakload tool A portable breakload tool which permits opening of electric devices under load so that the opening is made without apparent external arc. The tool includes an arch quenching chamber in which two fixed contacts and a rotatable contact are positioned. The m... | 10/13/1987 |
| 4638275 | Electric switching unit comprising a gas-tight casing for protection of contacts An electric switching unit for preventing oxidation of copper-base contacts in contactors comprises a body (2), comprises an electromagnet (11) having a stationary yoke (7) and a moving armature (15) in cooperating relation with a plurality of switches (3... | 01/20/1987 |
| 4565901 | Gas-insulated electric device A gas-insulated electric device comprising an electric conductor disposed in a sealed vessel filled with an insulating gas, the conductor being supported by a solid insulating member. The insulating gas is a nitrilic fluorocarbon compound or a mixture of ... | 01/21/1986 |
| 4559424 | Disconnect switch for high-voltage switching installation A switching assembly for a high voltage switching installation includes a tubular movable main switching contact in which is disposed an auxiliary switching pin. An elastic spring drive with a drive lever and a cocking lever is pivotably attached at an ou... | 12/17/1985 |
| 4547316 | Insulating gas for electric device An insulating gas for an electric device which comprises pentafluoropropionitrile or a mixture of pentafluoropropionitrile and sulfur hexafluoride and at least one nitrite ester selected from methyl nitrite, ethyl nitrite, propyl nitrite, butyl nitrite, a... | 10/15/1985 |
| 4514606 | Disconnect switch assembly A disconnect switch is disclosed having a puffer interrupter electrically connected with and operated by a knife switch or fused disconnect switch. A puffer interrupter includes a divided pressure chamber having at least one exterior wall which is flexibl... | 04/30/1985 |
| 4393291 | Gas blast interrupters A gas-blast type interrupter comprises first and second electrodes relatively movable between a closed position in which they are in mutual electrical engagement and an open position in which they are mutually separated, movement of the electrodes towards... | 07/12/1983 |
| 4296288 | Gas insulated disconnecting switches In a gas insulated disconnecting switch, a movable contact assembly comprises a stationary cylinder, a coaxial cylindrical movable conductive contact, and a coaxial rod-shaped movable arc electrode. A compression chamber is formed between the stationary c... | 10/20/1981 |
| 4263491 | Method for checking electric contacts of an enclosed-type switching device and an auxiliary apparatus for use with the switching device to use the method In an enclosed-type switching device having at least a pair of electric contacts, a method for checking the contacts without visual inspection wherein with the contacts closed, the resistance value between outer terminals connected to the contacts is meas... | 04/21/1981 |
