The wheel assembly (14) comprises a wheel (26) rotatable about a horizontal axis and turnable about a vertical axis.

A roller insert assembly (20) is installed within a cooling bed (22) having longitudinal members (24) and transverse members (26).

Each roller (3) pivots on a vertical axis (8).

The latch mechanism is pivotally supported about a pivot axis (356), wherein the latch mechanism rotates thereabout as the seat folds about a remote axis.

In the pivoting seat described, the back of the seat, together with the seat portion, is designed to pivot around an almost vertical axis, the sitting surface pivoting around an almost horizontal axis.

The aperture (10) is pivotally mounted about a rotational axis (12).

A chair with a synchronisation mechanism comprises a seat (7) that can swivel around a swivelling axis (5) and a backrest support (11) that can swivel around a swivelling axis (9).

A portable driving device (10) for rotationally driving a ski course gate (80) into a snow covered surface includes a drive member (62) rotatable about a longitudinal axis.

The shaft (28) is pivotably mounted around an axis which is parallel to the pivotable axletree and, together with the axletree, is pivotably mounted around the at least approximately vertical axis.

The frame (5) can be pivoted about an axis (Z) which is perpendicular to the plane of the strip.

The cushion support is optionally pivotally mounted about a horizontal pivoting axis (x).

The oscillating assembly comprises a die supporting structure that pivots about a pivot axis.

The fastening device (212) is received so that it can be rotated about a vertical axis of rotation (240).

A friction drive wheel (13) is mounted at the extremity of a lever (14) pivoting about an axis (15).

Said table top is connected to the underframe by hinges in such a way that it can pivot about a horizontal swivelling axis (11.1).