The linking portion (23) is tightly fitted in the groove (13).

The invention is characterised in that the head comprises a fixed body (2) and a membrane (3) mounted tight over part at least of the fixed body (2).

The invention relates to a ring (120) that is intended for being mounted tightly around a shaft of a hydraulic machine to form a portion of a hydrostatic or hydrodynamic bearing.

A device for shaping plate-like workpieces which can be clamped between a first and a second tool uses an hour-glass shaped roller as bending tool.

The linking portion (23) is tightly fitted in the groove (13).

The packing is set and clamped by meshing of two screwed clamping rings.

A damping ring (6) is mounted on the end surface of the foot and pressed to said end surface with the aid of an elastic filler (7).

At least one screw (44) is mounted in the clamping portion (14) and can be tightened against the ring (38).

At least one screw (44) is mounted in the clamping portion (14) and can be tightened against the moveable ring (30B).

The handle (420) is pivotably installed on the body (410) between a tight fastening position and a slackening position.

Flanges between which the orifice plate is located and clamped are to be provided with pressure take-off lines connected to a manometer.

The invention is characterised in that the head comprises a fixed body (2) and a membrane (3) mounted tight over part at least of the fixed body (2).

The invention relates to a ring (120) that is intended for being mounted tightly around a shaft of a hydraulic machine to form a portion of a hydrostatic or hydrodynamic bearing.

The bumper is adjustable between a constricting configuration and a non-constricting configuration.

The adjustable receiver structure has a tongue which is mountable into a standard receiver and can be clamped therein.