The invention falls within the technical sector of high-security locks according to claim 1.

The need to combat increasingly skilful and evolved burglars and safebreakers does not permit respites in the search for increasingly better technical solutions so as to raise the security standard of the locks, whose inviolability often remains a relative value rather than absolute as by contrast is desirable.

in the field of mechanical locks, double bitted keys by now emerge as definitively outdated, even if recently ameliorative devices have been introduced, while the state of the art is today represented by the cylinder with a consolidated European profile, better if supplemented by magnets in the key. In order to externally protect the keyhole, the afore-mentioned locks with European cylinder are usually equipped with the so-called "defender", comprising a half-shell protection device, which incorporates an idle rotating bush in front of the keyhole, with anti-drill functions, while the body of the protection device is studied form-wise to prevent it being possible to enter a tube or pipe used as leverage to break said protective device and/or the cylinder. And then there are mechanical locks which are combined with complementary electromechanical or electronic devices which increase the security of the same, for example registering attempts of housebreaking and sending signals, and/or operating ancillary mechanisms aimed at blocking the lock in an irreversible manner with the normal key.

plug, and I which causes the plug to rotate; mechanical combination means for blocking and releasing the rotation of the manipulator head and the connected actuator plug;

an opening/closing assembly, accessible from the exterior of the security doors, armoured doors and the like, for operating

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the manipulator head and the mechanical combination

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means, whjere the opening/closing assembly comprises: an outer shellj incorporating an axial pass-through cylindrical seat that h uses a rotor coaxial with the manipulator head and the actuator plug, where the rotor is able to slide axially toward thej manipulator head, in opposition to the spring- loaded components which retain it, when at rest, against a shoulder wjithin the cylindrical seat; a defender block, for impeding external access to the manipulator head, supported by a pin inside the rotor, with the ability to rotate on an axis perpendicular to the rotation of the rotor, where the defender block is p!artially accessible externally and close to the manipulatof head with its corresponding internal part, and where the defender block comprises a first profiled face that can be stably paired with a removable flat key, and a second profiled face, diametrically opposite to the first, that can be provisionally paired with a locking/unlocking device, and where the defender block is able to rotate between at least two characteristic positions, one where the first profiled face is turned obtward and can receive the flat key, and another where the [first profiled face is turned toward the manipulator head while the second profiled face is turned outward and can receive the locking/unlocking device, which can be manually operated on to achieve: the axial translation of the rotor - defender block - flat key assembly, so that the key engages With the mechanical combination means for releasing the rotation of the manipulator head; the rotation, in one or the other direction, of the rotor-defender block - flat key - manipulator head - actuator plug assembly, with consequent rotation in the same direction of the cam to open or close the lock.

The features [of the invention will emerge as clear from the following description of a preferred form of realisation of the keyed device for operating! locks in question, in accordance with the matters indicated in the claims and with the aid of the attached drawings, in which;

- Dwg. 1 illustrates a lateral view of the device associated with a European) profile cylinder for locks;

- Dwg. 2 illustrates a frontal view of the device in Dwg. 1;

- Dwg. 3 illustrates, in magnified scale, a section according to the ill-Ill pla ^! ne of Dwg. 1 ;

- Dwg. 4 illustrates, in magnified scale, a section according to the IV-IV plkie of Dwg. 2;

- Dwg. 5 illiListrates an axonometric view of the portable opening/closing device, for operating the keyed device, also

of the cylinder (E) (specifically see Dwg. 12).

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The cam (C) is rotated in either direction, respectively to open or close said deadbolt (P), via the mechanisms of the aforementioned lock (S).

According to the invention, the device (100) includes a (1 ) mechanism for operating said cam (C), in which the following is envisaged:

an actuator plug (10) situated inside the euro profile cylinder (E) and coaxial with the rotation axis of the cam (C), causing trW cam to rotate;

a manipulator head (11 ), associated with the actuator plug

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(10) and intended to rotate the latter;

mechanical combination means (12) for blocking and releasing the rotation of the afore-mentioned manipulator head (11)jand the connected actuator plug (10). The actuator plug (10) can slide axially, in opposition to the reaction of spring-loaded components (13), while the manipulator head (11 ) is inserted rotating in a cylindrical compartment (14) situated in a flange (15), with the latter integral to the afore-mentioned euro profile cylinder !(E).

The mechanical combination means (1.2) are advantageously made up of a number of combination pins (120) (of which only two visible in Dwg. 3), housed inside said manipulator head (11 ) and arranged in a circle according to a predefined geometry, for example a circumference, wit ) the respective axes parallel to that of the

opening/closing device (27).

In the first profiled face (251 ), a male dovetail profile (261 ) is envisaged, which can engage with a complementary female dovetail profile (262) on thej back of the flat key (26) to achieve the stable removable coupling between it and said block (25).

In the second !profiled face (252), at least two dead holes (272) i

are envisaged, parallel to each other and parallel and symmetrically off-centre from the rotation axis of said rotor (22).

The two afore-mentioned dead holes (272) are there to accommodate corresponding plugs (270) protruding from the opening/closing device (27), to accomplish the provisional coupling

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between it and the defender block (25) (see in particular Dwg. 4).

The flat key (26), illustrated in the drawings from 8 to 1 1 and adapted for the spherical defender block (25), has an outer face shaped like a spherical cap, with radius equal to that of the block (25), so as to restore thej continuity of the spherical shape when they are joined together. !

The same spherical cap-shaped outer face of the flat key (26) comprises a number of combination holes (260), of differing lengths, arranged in a circle according to a predefined geometry, for example a circumference, with their axes parallel to each other.

The combination holes (260) are destined to be directed toward the manipulator head (11) and parallel to its axis in concomitance with said second position of the defender block (25), and are suitable for engaging with the corresponding combination pins (120) protruding from the manipulator head (11 ) to push them along their predefined routes envisaged to release the head, as more fully explained further on.

The lateral surface of the defender block (25) envisages a number of notches j (25T), that can be gripped by a fingernail or flat-

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blade tool, to facilitate the rotation of the block (25) between its two ί

characteristic positions (Dwgs. 1, 2, 12).

In order to more fully define and stabilise the latter, respective centring means (30) have been envisaged, represented in the example by an initial circular cavity (31 ) made in the centre of the flat key (26) and a second circular cavity (32), identical to the first, made in the centre of the second profiled face (252).

Each cavity (31 , 32), in relation to the position adopted by the defender block (25)i is alternatively destined to elastically engage with a reference situated in the manipulator head (11 ), for example the headend of the actuator plug (10), protruding slightly from the latter.

In an initial alternative embodiment, not illustrated, the aforementioned defender block (25) has an essentially cylindrical shape whose axis coincides with the rotation axis of the block (25) itself; likewise, at least the first profiled face (251 ) is flattened and parallel to the rotation axis.

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In a second alternative embodiment, also not illustrated, the defender block (2|5) has an essentially prismatic shape whose longitudinal axis coincides with the rotation axis of the block (25) itself,

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and where the first land second profiled faces (251 , 252) coincide with

The sequence; of operations necessary for opening the lock (S) by means of the described keyed device (100) is now described, along with the functioning of the latter, already partly intuitable from the previous structural description.

The user observes the defender block (25) to check which of the related profiled faces (251 , 252) is turned outward.

In the event that it is not already the first face (251 ), they take steps to appropriately rotate the defender block (25), possibly with the aid of the notches (25T).

Then, they extract the opening/closing device (27), for example from their pocket oribag, and remove the cover (29C), uncovering the back of the flat key (26).

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Using the device (27), they take steps to engage the female dovetail profile (26¾) of the flat key (26) in the complementary male dovetail profile (261) envisaged in the first profiled face (251 ).

Disengaging the device (27), the flat key (26) remains stably engaged in the defender block (25), which is subsequently rotated, again with the possi ible aid of the notches (25T), in its afore-mentioned second position, in which the same flat key (26) is drawn inside, in front of the manipulator head (11 ).

The slight click by means of which the actuator plug (10) engages in the cavity (31 ) at the centre of the flat key (26), signals the achievement of the correct position.

Griping the device (27), the plugs (270) engage in the dead holes (272) of the second profiled face (252), until the concave cavity

the combination pins (120), which remain inside the holes (16) in the flange (15);

the rotation, in the appropriate direction, of the rotor (22) - j

defender .block (25) - flat key (26) - manipulator head ( 1 )

The construction-related attention dedicated to the "passive" protection of the lock is of particular significance, envisaging the parts subject to attack as generously sized and made of highly-resistant steel, neutralising Ipck-picking attempts using devices such as drills, cutting disks or the like, or at least making them very difficult.

The structure of the keyed device described makes it possible to combine it with additional accessory devices, both mechanical and electromechanical, aimed at further increasing the security of the same. I

It is therefore understood that the aspects described are by way of example but not limited to, therefore any detail changes which might become necessary for technical and/or functional reasons, are ί

considered to fall fr6m this point on within the same protective sphere

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defined by the claim's made below.