Paulstra Gmbh

Societe Paulstra

Michel Domer

Jean-Yves Hay

Pierre Hauraux

A ball-joint coupling comprises a male coupling member and a female coupling member. The male coupling member includes a ball to which a layer of elastomeric material is bonded. A part-spherical cap is received on the ball over said elastomeric layer and is bonded to such layer. The female coupling member has a part-spherical socket to receive the cap. Retaining means are operative between the cap and the female coupling member to prevent relative rotation of the cap in the socket at least in the horizontal plane, so that relative movement between the male and female coupling member results in deformation of the elastomeric layer and consequent damping of the movement.

Spherical couplings for vehicle towing or kindred purposes

The bumper bar of a vehicle is mounted by means of shock-absorbing resilient cushions which are arranged to be stressed in shear when forces are exerted longitudinally of the vehicle. Preferably the cushions are stressed partially in shear and partially in compression both for longitudinal forces and for lateral forces.

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Montigny-les-Cormeilles, France

Michel Domer