Peugeot Citroen Automobiles Sa

Centre National De La Recherche Scientifique

Alcatel

Alcatel Cit

Valeo Equipements Electriques Moteur

A. Raymond Et Cie

Schlumberger Industries, Sa

Skis Dynastar

Gulplug

Inrimage

Jean-Paul Yonnet

Christophe Fageon

Emmanuel Sedda

Stephane Guerin

Jerome Delamare

Christian Chillet

Damien Chassoulier

J&eacute;r&ocirc;me Delamare

Nicolas Labbe

Denis Perrillat-Amede

Benoit Dupeux

Gaëtan Rey

Christophe Baldi

Maxime Clavel

Anthony Sanchez

Philippe Tenaud

Elisabeth Rulliere

Antoine Franco

Stéphane Wolozan

Stéphanie Pellet

Xavier Pain

Pascal Sircoulomb

Marc De Bortoli

Linda Malaquin

Stéphane Guerin

A connection device comprises a male element and a female element capable of being axially inserted one into the other and locking to one another by means of a bayonet mechanism. The male element and the female element each have a primary magnetic circuit comprising a ferromagnetic yoke and a plurality of magnets arranged in a plane transverse to the insertion axis. The magnetic circuits are capable of magnetically coupling to one another when the male element and the female element are in proximity and facing one another, in order to form a multipolar magnetic circuit in which the magnets are arranged between the two yokes in such a way as to generate a magnetic flux closing on the two yokes and generating an attractive axial magnetic force.

Connection device comprising a multipolar magnetic circuit

The invention relates to an electrical plug and socket assembly comprising: a base including at least two first electrical contacts and a first magnetic portion arranged so as to move by magnetic attraction to move the first two electrical contacts toward the outside of the base; a plug comprising two second electrical contacts intended to electrically connect to the first two electrical contacts when same are outside the base and a second magnetic portion to move, by magnetic attraction, the first magnetic portion to drive the first electrical contacts toward the outside of the base; the first magnetic portion or the second magnetic portion comprises at least one permanent magnet such as to form a magnetic circuit when the plug is brought near the base.

Electrical plug and socket assembly

A DC electric rotating machine, such as a starter of an automotive vehicle, includes a stator with salient poles having at least four poles distributed uniformly over the circumference of the stator, a rotor disposed inside the stator, a set of brushes adapted for the electric supply of the rotor, and at least two geometrically opposed salient poles. Each pole includes at least one substantially radial slot in a plane parallel to the axis of rotation of the rotor and preferably passes through the axis of the rotor. By minimizing the reaction fields of the armature, utilization of the magnetic material of the parts of the stator is balanced and a harmful armature reaction effect, which increases saturation of the polar parts of the inductor and which leads to reduction in the driving magnetic torque, is mitigated.

Electric rotating machine with salient poles

The invention relates to an electromagnetic control device for the opening and closing of a mechanical element, particularly a valve of an internal combustion engine. The positioning of the mechanical element in at least one position (open or closed) is achieved by the action of at least one solenoid () acting on a plate controlling the position of the mechanical element. The device has at least two gaps which are closed by the plate on the positioning of the mechanical element in at least one position, the plate being mounted to rotate such that the axis of rotation of the plate is between the two gaps. The device also has at least one permanent magnet () to polarize the device such as to hold the plate in at least one position in the absence of current through the solenoid (), said permanent magnet () not being crossed by the principal magnetic flux () of the solenoid ().

Electromagnetic control device operating by switching

The invention pertains to a device for controlling the opening and closing of an internal combustion engine valve. This device is characterized in that the magnetic circuit of the electromagnet and/or the plate contains a magnetic material having a remnant magnetization (Fp) when the valve is in position, the remnant magnetization (Fp) being reversible so as to be cancelled when the valve changes position and having a coercive field strength in the range of 10 Oe to 600 Oe.

Electromagnet-equipped control device for an internal combustion engine valve

An electromagnetic valve actuator for internal combustion engines, includes an electromagnet and a mobile magnetic plate intended to come into contact with a part of the electromagnet. At least one stop is located on the electromagnet or on the plate to limit the contact surface between the plate and the electromagnet. The actuator the electromagnet includes a magnet in its magnetic circuit.

Electromechanical valve actuator for internal combustion engines and internal combustion engine equipped with such an actuator

The present invention pertains to a valve actuating device for an internal combustion engine, comprising a magnetic blade controlling the position of the valve and cooperating for this purpose with at least one magnetic circuit comprising at least one magnet for attracting the blade alternately toward a first end position in which the valve is in the closed position and a second end position in which the valve is in the open position. A coil with springs controls the displacement of the blade from one end to the other. The magnetic circuit includes two non-coplanar parts, each of which is approximately C-shaped. A first coil surrounds the main branch of the first part and a second coil surrounds the main branch of the second part. At least one magnet connects the lateral faces opposite the two parts. The corresponding ends of the open branches are approximately coplanar.

Electromagnetic valve actuating device for an internal combustion engine

An electromechanical valve actuator for internal combustion engines, equipped with a polarized electromagnet and with a magnetic plate switches between a first position close to the electromagnet and a second position remote from the electromagnet, the switching times between these positions being determined depending on the operating state of the engine. The actuator supplies the electromagnet with a variable attracting current in the course of the approach of the plate to the electromagnet.

An electromechanical valve actuator for internal combustion engines is equipped with a polarized electromagnet exerting a magnetic action on a magnetic plate that is subject to a mechanical restoring action, which action can compensate for the mechanical action and maintain the plate in a distant position from the electromagnet. The actuator ensures that the displacements of the plate are controlled solely by this electromagnet and the mechanical restoring action such that the plate performs shuttle movements beginning from the distant position.

An electromechanical valve control actuator for internal combustion engines, includes an electromagnet with a magnet and a mobile magnetic plate moving into the vicinity of the electromagnet. The magnet is located on a surface of the electromagnet opposite the plate. The actuator includes an E-shaped magnetic circuit, and the magnet is located at the end of a branch of this E-shaped circuit.

Electromechanical valve control actuator for internal combustion engines and internal combustion engine equipped with such an actuator

A magnetic bearing for centering and controlling tilting of a first body relative to a second body includes centering members adapted to center the first body magnetically relative to the second body at least in the direction transverse to the reference axis, two permanently magnetized rings carried by a first ferromagnetic armature fastened to the first body, an annular plurality of (at least three) tilt windings fastened to the second body and each including two groups of circumferential strands respectively adapted to face each of the permanently magnetized rings regardless of the orientation of the hollow outer part, and an excitation circuit adapted to apply excitation currents to the tilt windings adapted to generate tilting forces in the air-gaps.

Magnetic centering bearing with high-amplitude tilt control

Ball joint type magnetic bearing for tilting body

The present invention relates to a system for driving two mechanical members in rotation about an axis by magnetic coupling of the attractive type, the system comprises respective magnetic elements secured to each of said mechanical members, the two magnetic elements being concentric, one of them being made up of two identical magnetic rings of minimum radius R.sub.3 and of maximum radius R.sub.4, and the other one of them being made up of a magnetic ring having a minimum radius R.sub.1 and a maximum radius R.sub.2, with its midplane perpendicular to the axis of rotation being offset by a distance d from the midplanes of each of said two identical rings. Each ring possesses magnetization in a direction contained in a plane that is perpendicular to the axis of rotation. Each ring also possesses N magnetic poles uniformly distributed around said axis of rotation. The ratio 2d/.vertline.(R.sub.3 +R.sub.4)-(R.sub.1 +R.sub.2).vertline. lies in the range 0.2 to 0.8.

System for providing rotary drive between two mechanical members by

The bearing has a fixed portion, and a moving portion, and includes a passive magnetic abutment composed of a fixed element secured to said fixed portion, and of a moving element secured to said moving portion. The bearing further including a passive magnetic centering bearing which is coaxial with said passive abutment, and which is composed of a fixed element secured to the fixed portion, and of a moving element secured to the moving portion, the passive abutment externally surrounding the passive centering bearing, the passive abutment having axial stiffness k.sub.ab, radial stiffness k.sub.rb, a mean radius R.sub.mb, and an inside radius R.sub.ib, and said passive centering bearing having axial stiffness k.sub.ac, radial stiffness k.sub.rc, a mean radius R.sub.mc, and an outside radius R.sub.ec, an air gap e separating the fixed element of said abutment from the moving element thereof and separating the fixed element of the centering bearing from the moving element thereof, these parameters being chosen so as to satisfy the following three relationships simultaneously:

Magnetic bearing and an assembly comprising a stator portion and a rotor

A vibration damper device (1) intended to be mounted on a sports article such as, in particular, a tennis or squash racket, a gliding board or a golf club, wherein the device includes at least two elements (3, 4) superposed to form a stack and mounted so as to slide relative to one another, each element (3, 4) in said stack being secured to the article by one end, the ends (13, 14) of the adjacent elements being offset relative to one another so that the deformations of the article (8) due to the vibrations cause the adjacent elements (3, 4) to slide and at least one of the superposed elements (4) is magnetized, one of the other elements (3) in the stack being made of a material which is sensitive to the magnetic field generated by the magnetized element (4).

Growing community of inventors

Meylan, France

Jean-Paul Yonnet