Assignee
ALSTHOM GEC
FR111 patents
Top patents by PatentIndex Score
US5286933AFeb 15, 1994
Vacuum circuit-breaker equipped with self-diagnosis means
ALSTHOM GEC57 citations96
US4933630AJun 12, 1990
System for measuring phase currents in a 3-phase installation
ALSTHOM GEC68 citations96
US5321597AJun 14, 1994
Galvanic isolation device for direct current electrical signals or electrical signals likely to include a direct current component
ALSTHOM GEC124 citations95
US5357068AOct 18, 1994
Sulfur hexafluoride isolating circuit-breaker and use thereof in prefabricated stations, substations, and bays
ALSTHOM GEC108 citations93
US5350892ASep 27, 1994
Medium tension circuit-breaker for indoor or outdoor use
ALSTHOM GEC103 citations93
US5321221AJun 14, 1994
Self-disconnecting circuit-breaker for medium tension, and use thereof in a medium-tension station or bay
ALSTHOM GEC59 citations93
US5295207AMar 15, 1994
Optical apparatus for measuring current in a grounded metal-clad installation
ALSTHOM GEC25 citations93
US5293014AMar 8, 1994
Circuit breaker with triple movement for high or medium voltages
ALSTHOM GEC33 citations93
US5289093AFeb 22, 1994
Antispin and antilock methods for an electric traction vehicle
ALSTHOM GEC112 citations93
US5223682AJun 29, 1993
Arc-detecting circuit breaker
ALSTHOM GEC26 citations92
US5300884AApr 5, 1994
Position sensing apparatus for measuring the angular position of a rotor relative to a stator having a plurality of teeth with excitation windings and plural phase reception windings
ALSTHOM GEC60 citations91
US5108258AApr 28, 1992
System for supporting the rotor in an axial exhaust turbine with an exhaust end bearing having isotropic stiffness and directly connected to a foundation
ALSTHOM GEC25 citations91
US5094588AMar 10, 1992
Concrete steam condenser for an axial exhaust turbine and turbine provided with same
ALSTHOM GEC22 citations91
US5091668AFeb 25, 1992
Motor having flux-concentrating permanent magnets
ALSTHOM GEC230 citations91
US5162686ANov 10, 1992
Motor rotor having magnets
ALSTHOM GEC81 citations90
US5318270AJun 7, 1994
Valve with a crenellated seat
ALSTHOM GEC39 citations89
US5290103AMar 1, 1994
Optical fiber temperature sensor
ALSTHOM GEC23 citations89
US5232338AAug 3, 1993
Blade array for turbomachines comprising suction ports in the inner and/or outer wall and turbomachines comprising same
ALSTHOM GEC24 citations89
US5197392AMar 30, 1993
Linkage for articulated vehicles, in particular rail vehicles
ALSTHOM GEC23 citations89
US5149247ASep 22, 1992
Single hp-mp internal stator for a steam turbine with controlled steam conditioning
ALSTHOM GEC29 citations89
US5328326AJul 12, 1994
Impulse turbine with a drum rotor, and improvements to such turbines
ALSTHOM GEC21 citations88
US5308227AMay 3, 1994
Drum rotor for an impulse steam turbine having blades mounted in longitudinal grooves, and an impulse steam turbine including such a motor
ALSTHOM GEC21 citations88
US5063472ANov 5, 1991
Device for detecting superconductor quenching and application to a superconducting current limiter
ALSTHOM GEC25 citations88
US5181473AJan 26, 1993
Rail vehicle bogey with independent motorized wheels
ALSTHOM GEC26 citations87
US5305961AApr 26, 1994
Method of winding an electrical coil as successive oblique layers of coil turns
ALSTHOM GEC65 citations85
US5200698AApr 6, 1993
System for sensing the position of a rotating steel shaft including a track formed by a strip having discontinuous electrical properties, and a method of manufacturing such a track
ALSTHOM GEC64 citations85
US5058391AOct 22, 1991
Method of cooling electrical components, device for implementing same and application to vehicle-borne components
ALSTHOM GEC52 citations85
US5215168AJun 1, 1993
Braking system for a railway vehicle
ALSTHOM GEC26 citations84
US5149345ASep 22, 1992
Centrifuge purifier for a gas flow
ALSTHOM GEC25 citations84
US5086706AFeb 11, 1992
Hinged bogey for rail vehicles
ALSTHOM GEC22 citations84
US5153804AOct 6, 1992
Hybrid current limiter having superconductor windings
ALSTHOM GEC20 citations81
US5110460AMay 5, 1992
Centrifugal separator for a liquid capable of waxing, in particular for diesel oil
ALSTHOM GEC47 citations81
US5124872AJun 23, 1992
High tension circuit breaker having varistors
ALSTHOM GEC21 citations80
US5047681ASep 10, 1991
Constant power synchronous motor with microprocessor control
ALSTHOM GEC23 citations80
US5172041ADec 15, 1992
Method and device for asynchronous electric motor control by magnetic flux regulation
ALSTHOM GEC20 citations79
US5304760AApr 19, 1994
Ultra-high-tension circuit-breaker
ALSTHOM GEC11 citations74
US5266758ANov 30, 1993
SF6 circuit breaker having an incorporated capacitor
ALSTHOM GEC16 citations74
US5264671ANov 23, 1993
Varistor inserter device for a high-voltage circuit-breaker
ALSTHOM GEC7 citations74
US5258590ANov 2, 1993
Medium- or high-tension circuit breaker having abutting arcing contacts
ALSTHOM GEC11 citations74
US5179257AJan 12, 1993
Medium-voltage gas circuit-breaker
ALSTHOM GEC11 citations74
US5170023ADec 8, 1992
Circuit breaker with varistor-assisted interruption
ALSTHOM GEC18 citations74
US5164559ANov 17, 1992
Circuit breaker with an incorporated varistor
ALSTHOM GEC12 citations74
US5151565ASep 29, 1992
Medium tension circuit breaker
ALSTHOM GEC10 citations74
US5151567ASep 29, 1992
Circuit breaker control apparatus
ALSTHOM GEC15 citations74
US5126516AJun 30, 1992
Puffer-type medium or high tension circuit breaker
ALSTHOM GEC7 citations74
US5107715AApr 28, 1992
Circuit breaker drive mechanism
ALSTHOM GEC13 citations74
US5105058AApr 14, 1992
Dielectric blast gas high voltage circuit breaker with electrical resistance conductor
ALSTHOM GEC14 citations74
US5089665AFeb 18, 1992
Metal-clad electricity line and method of manufacturing it
ALSTHOM GEC19 citations74
US5053915AOct 1, 1991
Capacitive sensor for a circuit for measuring the potential of a line conductor in a metalclad station
ALSTHOM GEC11 citations74
US5001314AMar 19, 1991
High tension circuit-breaker having a dielectric gas under pressure
ALSTHOM GEC12 citations74
Showing the top 50 of 111 patents by PatentIndex Score.