Abstract: The present invention relates to a sealing device including a sealing circular piece, an inner ring and an outer ring, with one being able to rotate relative to an axis. The circular piece is arranged between the two rings and comprises two circular lips arranged in a groove inclined with respect to the axis of rotation. The groove is provided on the outer face of the inner ring. An attachment profile is fixed in an orifice formed in the outer ring. The inclination of the groove makes it possible to increase the potential contact surface area perpendicular to the axis of rotation of the crown ring, since, for a given distance between an outer edge and an inner edge of a ring, the groove can be longer, improving the resistance of the top lip to expulsion. The two lips are prestressed in the groove allowing for a better hold.

Abstract: A sealing device comprising a sealing circular piece, an inner ring and an outer ring, one of the two rings being able to rotate relative to an axis, the circular piece being arranged between the two rings and comprising two circular lips arranged in a groove at right angles to the axis of rotation, a top lip and a bottom lip substantially at right angles to the top lip, the bottom lip has a radius of curvature directed towards the interior, the groove being provided on the outer face of the inner ring and a third circular lip pressing on the outer face of the inner ring, and a part is fixed in an orifice formed in the outer ring.

Abstract: A wind turbine rotor hub bearing where the series of mobile members include more than two annular series of such members whereof at least two have different median diameters which are arranged in more than two rows scaled along the bearing rotational axis, with two end rows each comprising a series of roller bearings having individually a rotational axis transversal to the axis and at least an intermediary row of mobile members comprising balls.

Abstract: The present invention relates to a sealing device (1) comprising a sealing circular piece (3), an inner ring (2) and an outer ring (4), one of the two rings being able to rotate relative to an axis, the circular piece (3) being arranged between the two rings (2, 4) and comprising two circular lips (300, 301) arranged in a groove (20) at right angles to the axis of rotation, a top lip (300) and a bottom lip (301) substantially at right angles to the top lip (300), said bottom lip (301) has a radius of curvature directed towards the interior, the groove (20) being provided on the outer face (21) of the inner ring (2) and a third circular lip (302) pressing on the outer face (21) of the inner ring (2), and a part (32) is fixed in an orifice (41) formed in the outer ring (4).

Abstract: The present invention relates to a sealing device including a sealing circular piece, an inner ring and an outer ring, with one being able to rotate relative to an axis. The circular piece is arranged between the two rings and comprises two circular lips arranged in a groove inclined with respect to the axis of rotation. The groove is provided on the outer face of the inner ring. An attachment profile is fixed in an orifice formed in the outer ring. The inclination of the groove makes it possible to increase the potential contact surface area perpendicular to the axis of rotation of the crown ring, since, for a given distance between an outer edge and an inner edge of a ring, the groove can be longer, improving the resistance of the top lip to expulsion. The two lips are prestressed in the groove allowing for a better hold.

Abstract: A wind turbine rotor hub bearing where the series of mobile members include more than two annular series of such members whereof at least two have different median diameters which are arranged in more than two rows scaled along the bearing rotational axis, with two end rows each comprising a series of roller bearings having individually a rotational axis transversal to the axis and at least an intermediary row of mobile members comprising balls.

Abstract: A device for machining a part by metal cutting comprising a massive block in a bore of which is located a sliding column guided in a front bearing and a rear bearing, at least the front bearing and the section of the column sliding therein being continuously convex in cross-section with three lobes distributed at 120° about a central axis. The front and rear bearings are hydrostatic journal bearings. The column supports a sliding block on which is mounted a slide in which is incorporated a turret head for dispensing cutting tools.

Abstract: The connector comprises: a central shaft (7) at the periphery of which linear conductor elements are longitudinally disposed, at least in a zone of contact provided on the shaft; a group (22) of radially disposed resilient conductors having conductive ends bent substantially into conformity with a toroidal surface centred on and facing towards the shaft (7) at a certain level of the zone of contact; resilient toroidal couplings (27,28) centred on the shaft (7) and surrounding said ends; a clamp (22,29) for compressing said couplings radially so as to urge, at the time of said compression of the couplings, the conductive ends radially inwardly into pressure contact with the longitudinal conductor elements of the shaft. This connector forms part of a rotor carrying magnetic heads of apparatus (FIG. 2) for recording on and playing back magnetic tape.

Abstract: Apparatus for recording and reading information on a magnetic tape, comprising heads rotating in the median plane of a drum (38) against which the tape can pass over a helical path (11). Means are provided for modifying the pitch of the helical path (11) of the tape, such as two movable rollers (55, 56) disposed respectively downstream and upstream of the drum (38), separated by a fixed difference in height and adapted to move in such a manner as to vary the length of the portion of tape connecting them without varying said difference in height.