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The stencil is provided with means for retaining (7; 12) or guiding a compact disc (6) that allow the compact disc (6) to be rotated relative to the support disc or the support disc relative to the compact disc (6).

The conductive disk is held against the rotating object.

A copy protected optical disc manufacturing method and a copy protected optical disc are provided.

The segment presses the deformable element against the first disk which is arranged such that it is offset in rotation as a reaction to the pressure.

According to the invention, a weak point (6, 9) is provided which extends along the linked rim (18) of the pressure disk (2) and forms a joint when the pressure disk is deflected.

The cathode is locked in place against the metal support disk (150) .

A spring (52) holds the secondary disc against the housing.

The invention concerns a copy-protected disc and a method for protecting such a disc.

The invention applies to disc filters having automatic backwashing and manually operated disc-type filters.

The copy protected optical disc cannot be copied using a recordable optical disc apparatus.

Said pressure disk is arranged in an axial manner on one side of the counter pressure disk and a lever system (11), which can be pivoted in an axial direction, is arranged on the other side of the counter pressure disk.

A copy protected DVD disc and a method for producing and validating the DVD disc is provided.

A disc brake caliper assembly for moving brake pads straddling the brake disc against each side of a brake disc comprises two tongs (20, 22)pivotably supported.

The center hub (15), when holding a compact disk, pulls the compact disk against the disk resting area of the bottom tray.