Abstract: An opening system comprising an upper bearing section bar (1) fastened to the vertical rods, a gripper for the plate (4) made up of a first section bar (2) and of a second section bar (3) and at least one moving device (5) for the plate (4); each moving device (5) is made up of a support section bar (6), a right angle gearbox, an arm (7), a gas spring (8) and a clamp (9); the right angle gearbox is made up of a first conical cogwheel (10) and a second conical cogwheel (11) engaging each other; the arm of the first conical cogwheel (10) acts as lever, transforming the axial movement of the rod of the gas spring (8) into a radial movement of the second conical cogwheel (11) and of the elements linked thereto: clamp (9), gripper for the plate (4) and plate itself (4).

Abstract: The present superstructure involves, for each upright, a spacer section bar (3), a hinge-bearing section bar (6), a hinge (8), a piston (13) that helps to lift the pane (1), and is completed by a gripper (9) for supporting the pane (1), a closing section bar (11) and a gasket; the section bar (3) has a box section so that it can be adjusted to be joined together with the section bar (6); each hinge (8) is fixed to the section bar (6) and at its end to be fixed to the gripper (9), bears conical guides (8.1) suitable for fitting the conical arms (9.1) situated on the gripper (9) itself; a gasket (12) is fixed to the gripper (9); where spherical panes (1) are involved, hinges (15) are used containing a body (15.1) and a connecting piece (15.2) that can be rotated with respects to the body (15.1) so that the panes (1) can be fitted on at different lengths of the circular arc.

Abstract: The system foresees for each plate (1) an autonomous mechanical structure composed of one section bar (3) connected to a gripper that holds a plate (1) as well as of another section bar (10) and at least two support arms (5, 5?, 6, 6?) hinged upon said section bars (3, 10); the structure is fixed to a section bar (9) that is in turn fixed to the display counter or window near the base of the tank; the support arms (5, 5?, 6, 6?) differ in length; two supports (4, 4?, 11, 11?) are fixed to each section bar (3, 10); said supports constitute the hinge members upon which the ends of the support arms (5, 5?, 6, 6?) fit; each plate (1) can both move in a parallelogram motion with translation parallel to the display counter or window, and open like a casement window using the pin (7) of the shorter support arm (5, 5?) as a pivot; the system also contains a spring closing mechanism and a lock (18).

Abstract: The opening system entails a longitudinal translation and a rotation of plates of a counter or display unit along the customer's side; each plate is fixed to a first bar; the latter is hinged to two supporting arms by pivots and at its turn each supporting arm is hinged to a lower bearing bar by two further pivots; the supporting arms are parallel and the pivots insist on their ends; a gas-actioned piston is connected to a supporting arm; the lower bearing bar is shaped in such a way to house in its section all the moving mechanics of plates; the two supporting arms of each plate in co-operation with each bar on which the plate-holding clamps are attached and the lower bearing arm form a parallelogram-like moving system.

Abstract: An opening system in which the glass doors (1, 2) move longitudinally along a customer's side between a load bearing upper bar (3) and a lower bar (4); one or more glass doors (1) are held by upper holding bar (22) and lower holding bar (23) which have rollers (20, 21) on their inner ends; the rollers (20, 21) slide transversely along the horizontal part of the T-shaped bars used as carriages (18, 19) which are equipped with wheels (9, 14) that slide longitudinally along slideways (6, 7, 11, 12) which have horizontal bases which extend longitudinally. Two slideways (6, 7) are positioned in the load bearing upper bar (3) and their bases are placed at the same height from ground level; the remaining slideways (11, 12) are positioned in the lower bar (4) and their bases are placed at the same height from the ground level too.