Patent ID: 8800332
Filing Date: 2014-08-12
Classification: E05B,Y10T

Abstract:
1. A protective device, for a lock of a door or leaf, comprising: a covering element which is associated slidingly with a plate that can be fixed to said door or leaf and can be positioned selectively so as to close an opening for access to said lock which is provided in said plate; two pins associated transversely with said plate and being adapted to block temporarily sliding of said covering element with respect to said plate; a rotor, which is associated rotatably, in contrast with at least one elastically deformable means, within a cavity provided in said plate, said pins interacting with arms of said rotor; pivots protruding from said rotor and cooperating selectively with at least three cams, which are freely associated rotatably adjacent or proximate to a surface of said cavity, said at least three cams having an axis that lies at vertices of a polygon and interacting with a magnet-based combination element which is adapted to modify the angular position of said at least three cams in order to allow or prevent the rotation of said rotor and therefore temporary mutual release of said pins and said covering element.