Locking/unlocking system of superimposable elements,
- comprising a first element (2) or upper element, and a second element (3), or lower element, to be locked and unlocked, superimposed each other along a plane (4) of relative motion, and a operating device (1),
- said operating device (1) providing a plurality of interference elements (110, 120, 130), comprised of magnetic (120, 130) material, ferromagnetic material or magnetically inert (110) material,
- said first element (2) and said second element (3) providing each one the same number of a plurality of housings (210;
- 310), said plurality of housings (210;
- 310) of said first element (2) and of said second element (3) being reciprocally positioned so as to form aligned pairs of housings (210, 310),
- each one of said pairs of housings (210;
- 310) providing inside centering means (220, 320, 240),
- said system further providing
- a plurality of first magnetic elements (230′) having a first length,
- a plurality of second magnetic elements (230″) having a second length, lower than the length of said plurality of first magnetic elements (230′), and
- a plurality of third magnetic elements (230″), having a third length equal to one half of the sum of said first and second lengths,
- the total height of said pairs of housings (210, 310) having a length equal to or longer than the double of said first length,
- inside each one of said pairs of housings (210, 310) being provided a pair of said magnetic elements (230′, 230″;
- 230′″) wherein said pairs of magnetic elements (230′, 230″, 230′″ have a centre of gravity,
- each pair of said magnetic elements (230′, 230″;
- 230′″) consisting of
- one of said first (230′) magnetic elements and of one of said second (230″) magnetic elements, or
- a pair of said third (230″) magnetic elements,
- each magnetic element (230′, 230″, 230′″) of said pair of magnetic elements (230′, 230″;
- 230′″) having two ends, each of said ends having only one polarity and said only one polarity being opposite to the polarity of the other end of the same magnetic element (230′, 230″, 230′″)
- in each pair of said magnetic elements (230′, 230″;
- 230′″), the position of each magnetic element (230′, 230″, 230′″) with respect to the other magnetic element (230′, 230″, 230′″) of the respective pair and the orientation of their polarity being combined randomly,
- so that the faced ends of the magnetic elements (230′, 230″, 230′″) of each pair always have opposite polarity, and
- so that in the absence of interferences said faced ends of said pair of first and second magnetic elements (230′, 230″) correspond to said plane (4), and said faced ends of said pair of third magnetic elements (230″) are offset with respect to said plane (4), and
- wherein in the absence of interferences, said centering means (220, 320, 240) act on said pairs of magnetic elements (230′, 230″;
- 230′″) for keeping said centre of gravity of said pairs of magnetic elements (230′, 2/30″;
- 230′″) on said plane (4), so that when both (a):
- each pair of said magnetic elements (230′, 230″;
- 230′″) is subject to a rejection force and (b):
- each pair of said magnetic elements (230′, 230″;
- 230′″) is subject to an attraction force provoked by one of said plurality of interference elements (110, 120) made of magnetic or ferromagnetic material, said center of gravity of said pairs of magnetic elements (230′, 230″;
- 230′″) cannot be kept on said plane (4) causing the movement of said pairs of magnetic elements (230′, 230″;
- 230′″) within their respective pair of housings (210, 310), said plurality of interference elements (110, 120, 130) of said operating device (1), being oriented and combined so that by bringing said operating device (1) close to one of said two elements (2, 3), one of said plurality of interference elements (110, 120, 130) only attracts or only rejects said pair of said first (230′) and said second (230″) magnetic elements in the respective pair of housings (210, 310) and only leaves unaltered said pair of said third magnetic elements 1230′″) in the respective pair of housings (210, 310), so that said faced ends of said pairs of magnetic elements (230′, 230″;
- 230′″) are all aligned along said plane (4), permitting the relative motion of the two elements (2, 3).