(57) 57 The hinge device (1) comprises a male element (2) and a female element (3). The
male element (2) includes a cylindrical body (4), wherefrom protrudes a pin (5), having
a smaller diameter than the cylindrical body (4) and lying coaxial therewith. A seat
is provided at the end of the pin (5), and a sphere (10) is maintained in the seat.
The female element (3) is shaped to accommodate at least part of the pin (5). Both
the male element (2) and the female element (3) are associable with casings.
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