The support may be in a lower or upper position.

The mobile base assembly (10) is mobile in the raised position and stationary in the lowered position.

When the float bodies (116) have passed into the upper position thereof, said elevated center of gravity position permits a rotation of the cyclic units into the initial position thereof.

The bucket (16) is driven between the lower station and the upper station.

These parts are able to hinge with respect to one another from an up position into a down end position, the device being provided with a spring for moving the first and the second part into the up position.

A high-speed bed (1) is arranged at the low position.

A low-speed bed (2) is arranged at the high position.

The mattress frame may be moved between a high position and a low position.

During navigation, said partitions are maintained in the upper position and, when the boat arrives at its destination, they are lowered for the containment and recovery of the oil.

The invention relates to apparatus for conveying material between a lower station and an upper station.

The handle means (H) is therefore movable between a lower retracted position and an upper, extended position.

Each hinge (150a, 150b) is provided slidably in the projection (102a, 102b) such that the hinge (150a, 150b) is movable between a lower position and an upper position, the lower position being closer to the bottom (102) than the upper position.

When a first motor rotor (30a) in the two motor rotors (30a, 30b) starts to return from the high position to the low position, a second motor rotor (30b) starts to rotate and climb from the low position to the high position.

The door is in an upward position when closed and downward position when open.

Changing from the low position to the underarm position.