Starting immediately behind the contact point (K) there are several successive strips, fixed strips (6) on one (S2) and flexible ones (3) on the other (S1) on the inside of both wires, which extend transversely to the direction of travel of the web.

bottom culture in sub-tidal areas

The rotating directions of the frame slats (S2) and the rotating directions of the mini slats (S1) fitted to the frame slats (S2) intersect with each other.

A batten downhaul and twist ropes adjust the battens over the whole sail surface.

Slats can be extruded material having reflective surfaces plated on V-grooves therein.

The slats are on a slat-supporting frame (34, 36), and the drive mechanism is on a drive supporting frame (40) that is under the slat-supporting frame (34, 36).

A load-bearing flexible film is secured to the plurality of slats on one side, the opposite sides of the slats from the flexible film are free allowing the slats to articulate relative to one another.

The elastic laths (2) are supported by a rope (4) and by sheaves (3) mounted on the elastic laths (2), and by the sheaves (3) mounted on the frame.

To adjust the spring characteristic of slats (22) of a slatted frame the invention proposes to provide on adjacent slats (22) additional spring members (40) to be adjustable in the longitudinal direction of said slats.

A pivoting assembly disposed on each of the plurality of slat allows the slats to articulate relative to one another within a defined range of vertical angles.

The movement of the mattress on the slats is restricted with the use of a non-slip tape on the wooden slats.

It can be simply sewn onto a slat apron or a mattress cover with its shrunk section lying flat thereon.

A plurality of vanes are secured to the body by way of a snap fit, and groups of vanes are selectively set at variable angles by use of a gang bar (57).

The different slat-rail groups are also reciprocated out of phase with one another so that an object (N) placed on the slat array is advanced incrementally along the slat array in a very gentle fashion.

The top construction is comprised of three longitudinal strips: a central strip (A) on which rests a person lying on the back, and two lateral strips (B1, B2) connected by springs to the central part.