| 摘要 |
<p>Closure device applicable to any type of spring hook wherein the pivoting part (2) hinged at one of the extremities of the body of the spring hook (1) presents a cavity (5) at the top portion which affects only the front face thereof, and lets free the sides and back face; there is provided inside the cavity a sash bolt (6) susceptible of being coupled to the hook (3) of the spring hook. Said pivoting part is optionnally provided with a locking system comprised of a tubular element (8) having a smooth internal face, and which is displaced along a thread (8) situated in the central region of the pivoting part, said tubular element being associated to the thread by means of a partial deformation of its surface (10), made by punching.</p> |
