Quotables
"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 5173638 | High-power radiator The high-power radiator includes a discharge space (12) bounded by a metal electrode (8), cooled on one side, and a dielectric (9) and filled with a noble gas or gas mixture, both the dielectric (9) and also the other electrode situated on the surface of ... | 12/22/1992 |
| 4977438 | Turn-off semiconductor component and use thereof A semiconductor device which can be turned off via a first gate arranged at the cathode side including, a second gate structure comparable to the structure of the first gate arranged at the anode side. During the turning off, the charge carriers can be mo... | 12/11/1990 |
| 4877928 | Release mechanism for a high speed circuit breaker A release mechanism for a high speed circuit breaker comprises a roller rotatably supported on an axle in a mobile contact bridge. A jack is acting in the circuit closing direction on the roller, and the frontal side of the jack is in the form of a slide.... | 10/31/1989 |
| 4809296 | Method for transmitting data via the lines of a power supply system A method for transmitting data via the power system line of a power supply system by carrier frequency modulation, wherein an improvement in the reliability of transmission is achieved by transmitting the same information several times in succession (time... | 02/28/1989 |
| 4796595 | Free-running pressure wave supercharger driven by gas forces In a free-running pressure wave supercharger driven by the gas forces, nozzles (27) are provided in the gas casing (6) and possibly also in the air casing (5), which nozzles are connected--via a drive line (26)--with a position in the air casing (5), pref... | 01/10/1989 |
| 4796283 | Surge counter for an overvoltage arrester A device for counting the overvoltage surges discharged by a gapless overvoltage arrester contains a sensing head and a counting mechanism which follows the sensing head. In the sensing head, the discharge current carried by the overvoltage arrester in a ... | 01/03/1989 |
| 4789792 | Feeding of matching circuit The invention relates to a feeding or matching circuit for feeding signal circuits, conducted via a multi-pin plug-in connection, of a freely programmable control unit or of a control and instrumentation system comprising at least one electronic module wh... | 12/06/1988 |
| 4774876 | Sprung suspension of an actuating piston In a spring suspension of an actuating piston, essentially consisting of a spring plate, a control spring acting on the spring plate and a nut as connection between actuating piston and spring plate, an intermediate underlay (5) is arranged between spring... | 10/04/1988 |
| 4764249 | Method for producing a coating layer for semiconductor technology and also use of the coating layer A coating layer (2) for semiconductor technology having an edge contour which has a wedge-shaped cross section is produced by predominantly anisotropic dry etching of the coating layer (2) through a mask (4) disposed in front of the coating layer (2) at a... | 08/16/1988 |
| 4752193 | Exhaust-gas turbocharger for the two-stage supercharging of an internal-combustion engine with a device to prevent losses of lubricant In order to prevent losses of lubricant in the bearing housing of the high-pressure stage of an exhaust-gas turbocharger for two-stage supercharging, the interior space of the bearing housing is conductively connected via a blocking air ring duct, pipes c... | 06/21/1988 |
| 4719554 | Method for protecting two static converters with direct-current link from overcurrents The field windings of large generators of hydroelectric power stations which are continuously connected to a three-phase system and are designed to produce large capacitive powers, are fed from a "positive" main static converter, designed for 8 kA, via a ... | 01/12/1988 |
