Quotables
"What, sir, would you make a ship sail against the wind and currents by lighting a bonfire under her deck? I pray you, excuse me, I have not the time to listen to such nonsense."
Napoleon Bonaparte ; When told of the Robert Fulton steamboat
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| Number | Title | Issue Date |
| 6417472 | Vacuum switching chamber having an annular insulator A vacuum switching chamber is provided for power switches in the low-voltage range, and has compact design and a high switching capacity. A housing of the switching chamber includes plate-type current terminals, a cylindrical wall part that surrounds flat... | 07/09/2002 |
| 5519370 | Sealed relay device A sealed relay of the high-vacuum type, or which may be backfilled with a dielectric gas such as hydrogen-nitrogen mixture for improved arc suppression when switching high-voltage d-c currents. The relay uses controlled fixed contacts which enable use of ... | 05/21/1996 |
| 5224592 | High voltage switch device and high-voltage change-over switch The disclosure relates to high-voltage change-over switches that are used to apply high voltage alternately to two X-ray tubes. Each of the four switch devices constituting a change-over switch includes a fixed contact element connected to an input termin... | 07/06/1993 |
| 4797522 | Vacuum-type circuit interrupter A vacuum circuit interrupter comprising an insulated, evacuated, cylindrical housing for a stationary electrode and a movable electrode, with an arc shield provided with a predetermined spacing from and connected to the stationary electrode. The dimension... | 01/10/1989 |
| 4755719 | Spark gap switch with jet pump driven gas flow A spark gap switch is disclosed with a pumping system which utilizes flowing gas to replenish the interelectrode region between conductive pulses. The spark gap switch typically consists of a housing enclosing a gas filled chamber in which there are two e... | 07/05/1988 |
| 4443672 | Low capacitance radio frequency switch A vacuum switch which is air operated and which has low contact capacitance, low inductance and low DC resistance. The switch has two fixed contacts and a moveable contact, the moveable contact being insulated from the moveable end structure to minimize c... | 04/17/1984 |
| 4029921 | Vacuum-type circuit interrupter with two sets of contacts electrically in parallel A vacuum-type circuit interrupter comprises two pluralities of rod electrodes positioned to form a ring of electrodes in which the electrodes of the first plurality interleave with those of the second plurality and are spaced circumferentially of the ring... | 06/14/1977 |
| 3941960 | Vacuum power circuit breaker A vacuum power circuit breaker having a vacuum-bulb interrupter unit comprising a vacuum bulb consisting of a cylindrical insulating envelope and end plates attached to the axial ends of the insulating envelope, stationary and movable electrode rods proje... | 03/02/1976 |
