Merlin Gerin

Schneider Electric Industries Sas

Safran Helicopter Engines

Institut Polytechnique De Grenoble

Turbomeca

Hugues Filiputti

Michel Lauraire

Marc Rival

Jean-Pierre Kersusan

Victor Pennucci

Romain Thiriet

Peter Malkin

Gilles Cortese

Cédric Bricquet

Jacques Vernay

Mathias Lamien

Patrick Bonnardel

Christophe Cartier-Millon

Thierry Maitre

Franck Garde

Thierry Humbert

Marcel Rigaud

Kenny Bernard

Stephen Rowe

An emergency starter that allows responsiveness within a few seconds, without having disadvantages associated with mass and size of a back-up hydraulic or pneumatic starter. An instantaneous gas thrust of pyrotechnic type is coupled with a positive displacement transmission generator in conjunction with automatic coupling to/uncoupling from a set that is to be started. An emergency start-up system includes at least one pyrotechnic gas generator connected to an electrical initiator itself connected to a computer, a positive displacement motor housing straight-cut gears, the pyrotechnic gas generator being coupled to the motor by an inlet in the casing. The motor includes a mechanism of connection capable of moving at one end of the drive shaft configured to couple the transmission shaft to a driven shaft of the set that is to be started via a centrifugal clutch.

Method and system for the emergency start-up of an energy generator set

The invention relates to a device for switching on and off an electric circuit comprising: a charge () which can be ignited, the combustion of which brings about the switching on or off of the electric circuit, ignition means for the pyrotechnic charge (), characterized in that: the ignition means are connected to the electric circuit and the ignition means comprise a microswitch (M, M') with magnetic action for controlling the ignition of the pyrotechnic charge ().

Device for breaking/making an electric circuit

A bistable electromagnetic actuator comprising a magnetic circuit comprising a magnetic yoke in which a shunt extends perpendicularly to a longitudinal axis of said yoke and comprising a permanent magnet positioned between a first surface of the yoke and the shunt. A plunger core is fitted with axial sliding between a latched position and an unlatched position. A coil extending between the shunt and a second surface of the yoke is designed to generate a first magnetic control flux to move the plunger core from an unlatched position to a latched position. A second magnetic control flux enables the plunger core to move from the latched position to the unlatched position by the action of a return spring.

Bistable electromagnetic actuator, control circuit of an electromagnetic actuator with double coil and electromagnetic actuator with double coil comprising one such control circuit

A three-phase circuit breaker with self-extinguishing expansion and rotating arc structures comprises an arc extinguishing chamber per pole and housing a pair of contacts, one stationary and one moveable, a coil to rotate the arc, and an exhaust channel in at least one contact to provide an opening a communication and gas outflow between the extinguishing chamber and the expansion volume of an enclosure filled with SF6. The extinguishing chamber has a square or rectangular cross-section to resorb the gas plug after braking of the gas rotation movement, and improve stirring of the gas in the extinguishing chamber.

Electrical circuit breaker with rotating arc and self-extinguishing

An operating mechanism of a three-position switch having a contact-bearing main shaft comprises a switch closing and opening operation device, and an earthing device closing and opening operating device. The two devices comprise driving flange plates connected by a common spring capable of being loaded by rotation of either of the operating shafts and transmitting, after the deadpoint has been reached, a drive movement of these flange plates transmitted by articulated levers to a crank handle wedged onto the main shaft. All the operations are high-speed and the torque transmitted to the main shaft increases in the course of the operating movement. A locking device maintains the main shaft in the open position during the loading phase of the spring.

Operating mechanism of a three-position switch

An inside of tubular contacts of a self-extinguishing expansion SF.sub.6 -gas circuit breaker including guiding ribs arranged to oppose any vortex-effect swirling gas flow between a first extinguishing chamber and a second expansion chamber. The presence of these ribs improves the dielectric withstand of the circuit breaker, and prevents any arc restriking inside the contacts.

Electrical circuit breaker with self-extinguishing expansion and

Growing community of inventors

Monestier de Clermont, France

Hugues Filiputti