Abstract: In the control apparatus of the invention, the power steering can be activated or deactivated by at least one control signal. The invention is characterized in that the control apparatus includes a member for measuring at least one parameter for activation of the power steering system as well as a member for measuring at least one parameter for deactivation of the power steering system. The control apparatus also includes a member for performing a first test to detect whether at least one activation parameter meets an activation condition, and a member for activating the power steering in response to the first test. Additionally, the control apparatus utilizes a member for performing a second test to detect whether at least one deactivation parameter meets a deactivation condition, and a member for deactivation of the power steering in response to the second test.

Abstract: A sensor for measuring an angle of rotation, and in particular the instantaneous angle of rotation of a rotatable member such as a steering column of a motor vehicle, is especially applicable in a power steering mechanism for a motor vehicle and includes a first wheel, the movement of which serves for measuring the angle of rotation and its direction. The sensor further includes a second wheel which is mechanically linked with but movable relative to the first wheel, the displacement of the second wheel being an indication of the number of rotations effected about an axis by the first wheel, and/or an indication of the direction of the rotation.

Abstract: An ignition coil, in particular for an internal combustion engine of an automotive vehicle, comprising a housing and a magnetic assembly integrated with the said housing, the magnetic assembly comprising a magnetic core mounted within a primary winding spool, a secondary winding spool coaxial with the primary winding spool, a primary winding, a secondary winding, a magnetic flux return circuit, low tension electrical supply means including a connector, and a plurality of connecting strips moulded onto the said connector and having ends on the outside of the said connector, and holding means for holding the said connector and connecting strips on the magnetic assembly, characterized in that the holding means are defined by the said ends of the connecting strips cooperating with slots formed in a flange of the secondary winding spool.

Abstract: An ignition coil, in particular for an internal combustion engine for an automotive vehicle, comprises, integrated into a housing, a magnetic assembly which includes a magnetic core mounted within a primary spool, with a secondary spool arranged coaxially around the primary spool. The spools carry the primary winding and the secondary winding, respectively, and the coil further includes a magnetic flux return circuit and a high tension connection assembly. The latter includes an insert member secured in the secondary spool, a high tension busing and a high tension guide member in which the high tension output member is mounted, and is characterized in that the high tension output member comprises a spring.

Abstract: A multiple ignition coil, in particular for an internal combustion engine for an automotive vehicle, has a casing in which are integrated at least two magnetic assemblies, at least two magnetic flux return circuits constituting a metallic armature of the casing, and mounting assembly for anchoring the coil to the vehicle, these mounting assembly comprising metallic cores which are entirely separate from the metallic armature and which are retained by moulding within projecting bosses of the casing.

Abstract: An ignition coil comprises at least one magnetic assembly, each of which has a central magnetic core, around which two formers, namely a primary and a secondary former, are arranged coaxially. The formers carry the primary and secondary windings respectively, and the magnetic assembly further includes retaining means adapted to position and secure the primary former within the secondary former. These retaining means comprise steps formed integrally in a tubular cavity of the secondary former and cooperating with one of the end plates of the primary former.

Abstract: An ignition coil has a high tension winding divided into sections, each of which is wound in one of a plurality of winding compartments formed in an insulating body and which are spaced apart from each other by insulating compartments. The various sections of the high tension winding are connected in series using the wire of which the winding itself. The high tension sub-assembly is encapsulated in an insulating envelope. The high tension or secondary sub-assembly is impregnated with an adhesive varnish before being encapsulated in a plastics material, the encapsulation being carried out by surface moulding.