Aktiebolaget Skf

Alain Gezault

Benoît Hauvespre

Romuald Lescorail

Torbjorn Hedman

Ludovic Fenayon

Yves-André Liverato

Jean-Luc Jadeau

Herve Maury

Nicolas Tronquoy

Mickael Chollet

Eric Robert

Jürgen Kurth

Jean-Marie Guegan

Juergen Kurth

Frederic Liege

Dirk Albrecht

Eve Goujon

Flavien Tesniere

A pulley device for a belt that includes an eccentric adjusting member fixed on a support, an eccentric hub rotatably mounted on the eccentric adjusting member, a torsion spring between the eccentric adjusting member and hub to exert a biasing force, and a pulley rotatably mounted on the hub. The hub provides an upper radial surface and the eccentric adjusting member provides a radially outwardly projecting flange formed at an upper end of the eccentric adjusting member and forming an axial abutment for the upper radial surface. The upper radial surface provides a pair of axially projected stops formed integrally within, each stop being dedicated to come into abutment against a corresponding stop provided by the radially outwardly projecting flange of the eccentric adjusting member. The hub further provides engaging means adapted to cooperate with an external tool, the engaging means circumferentially located between the projected stops of the hub.

Pulley device for a belt, installation method of such a device and motor vehicle equipped with such a device

A sealing arrangement for sealing a first chamber against a second chamber, the sealing arrangement being located between a first machine element and a second machine element. A relative movement occurs between the two machine elements. The sealing arrangement comprises a sealing element which is equipped with at least one sealing lip. The sealing lip(s) is/are held by the sealing element and is/are fixed by the sealing element at one of the machine elements. The sealing lip(s) is/are in sliding contact with the other machine element. The sealing arrangement comprises a lip element that is fixed with one of the machine elements and is in sliding contact with the other machine element. The lip element comprises a conductive element for establishing electrical conductivity of the lip element, so that electrical conductivity is established between the two machine elements by the lip element in an effective an economical manner.

Sealing arrangement

A pulley device for a tensioner roller provides a pulley, a bearing, a spacer supporting the bearing. The spacer is provided with a through bore, and a securing bolt extending to the inside of the bore in the spacer. The device includes at least one means for the temporary locking of the securing bolt in relation to the spacer, the temporary locking means being separable and inserted between the bolt and the spacer. A pulley device for a winding roller is also provided.

Pulley device for tensioner roller or winding roller

The present invention relates to a mechanical system with a one-way clutch, for example a pulley for a motor vehicle alternator, comprising a first element and a second element which are able to move one with respect to the other in rotation about a central axis and delimit an annular housing radially to the central axis, a one-way clutch device arranged in the annular housing, and at least one rolling bearing arranged in the annular housing. The mechanical system is characterized in that the rolling bearing comprises at least one pressed ring distinct from the constituent elements of the one-way clutch device. The invention also relates to an alternator comprising such a mechanical system configured as a pulley with a one-way clutch.

Mechanical system with one-way clutch and alternator comprising such a system

The present invention relates to a mechanical system with a one-way clutch, for example a pulley for a motor vehicle alternator, comprising a first element and a second element which are able to move one with respect to the other in rotation about a central axis and delimit an annular housing radially to the central axis, a one-way clutch device arranged in the annular housing, and at least one rolling bearing arranged in the annular housing. The mechanical system is characterized in that the rolling bearing is an angular-contact bearing and comprises at least one pressed ring comprising means of attachment of the rolling bearing to the first element or the second element. The invention also relates to an alternator comprising such a mechanical system configured as a pulley with a one-way clutch.

Mechanical system comprising a one-way clutch and alternator comprising such a system

A mechanical system with a one-way clutch, such as a motor vehicle alternator pulley, includes an outer first ring and an inner second ring able to move relative to one another in rotation about a central axis and delimit between them, radially with respect to this central axis, an annular housing. The mechanical system includes a free-wheel mechanism having members arranged in the annular housing, and at least one rolling bearing providing rollers arranged in the annular housing. The first and second rings are common to the free-wheel mechanism and to the rolling bearing. The members of the free-wheel mechanism are cams in contact with a first race formed by the first ring and a second race formed by the second ring. The first and second races are circular, centered on the axis of rotation and have no ramp.

Mechanical system with one-way clutch, and alternator comprising such a system

Growing community of inventors

Vineuil, France

Alain Gezault