Skf France

Marc Le-Calve

Christophe Houdayer

Eric Beghini

Virginie Hamada

Jean-Marc Deglise-Favre

Ratchet free wheel device comprising a first element provided with cavities a number of ratchets able to project into said cavities and a second element for supporting the ratchets so that the second element rotates as one with the first element in one direction of relative rotation of said first and second elements and is free to rotate in an opposite direction of relative rotation. The device comprises a means of controlling the ratchets which is capable of preventing them from projecting into said cavities so that the second element is free to rotate with respect to the first element in two opposite directions of relative rotation of said first and second elements when said control means is active.

Ratchet free wheel device

Freewheel device 1 intended to be inserted between the outer cylindrical surface of an inner race 3 and the bore of an outer race 2, of the type comprising a number of wedging cams 7 held, between sliding tracks 4, 6 of the races, by a cage 8 which has windows 9 for the cams 7, and at least one holding member 11a capable of transmitting radial loadings between said races while being force-fitted onto a cylindrical bearing surface 5a of one of the races and in sliding contact with a cylindrical bearing surface 3a of the other race. There are roughnesses where the first race 2 and the holding member 11a contact.

Freewheel device

A freewheel device of the type comprising a plurality of wedging cams 5 mounted in at least one holding cage 8, a plurality of rolling bodies 15 mounted in an additional cage 18, an outer race 1 equipped on its bore with a track 6 along which the cams 5 can slide and with a raceway 16 along which the rolling bodies 15 can roll, an inner race 2 equipped on its cylindrical outer surface with a track 7 along with the cams 5 can slide and with a raceway 17 along which the rolling bodies can roll, to allow the one-way coupling between the outer race 1 and inner race 2. The freewheel device comprises, on one side, an end plate 12 secured to one of the races, adjacent to the holding cage 8 and axially retaining said cage in one direction, and the additional cage 18 for holding the rolling bodies 15 comprises means of axial retention, at least in the other direction, with respect to the race supporting the end plate.

Growing community of inventors

Cerelles, France

Marc Le-Calve