EP1437462A2 - System with a key and a security lock - Google Patents

Abstract

The profiled key (1) has a shaft (3) which fits in a matching slot in the cylinder (2a) of a security lock (2). The shaft of the key may be made in one piece or in two interlocking pieces. It engages with main (9) and auxiliary (12) plungers in the lock cylinder. The cylinder may rotate in the housing (2b) when the key is inserted, pushing the ends of the plungers to the correct position. The outer ends of the plungers engage with spring-loaded (11,14) housing plungers (10,13).

Description

Field of the invention

This invention relates to a system with a key and a Security lock having a keyed key, which has a transverse profile that is reciprocal to a keyway that is in the rotor or core of a security lock is formed, between this rotor and the stator or housing of the lock, in which this rotor in a suitable manner a number of main core tumbler and main housing tumbler phrases is arranged, which are under spring tension, and the at the introduction of the key shaft of a valid key in theirs Positioning can be positioned and allow the rotation of the rotor, causing the Opening the lock is caused.

The invention is directed to both the keys referred to as "flat keys" are generally reversible and where the main opening combination in the Main surfaces of the key shank is formed and made of a series of conical Depressions, as well as "toothed" keys or "edge keys" applicable, in which the main opening combination in a (non-reversible toothed key) or both (reversible toothed key) narrow sides of the Shank is formed and from a series of tooth-shaped incisions of the active Edge exists.

State of the art

In this field, the presence of keys is known, the lateral convex Have surfaces, as with rounded keys or keys with circular cross section is the case, and it is still the presence of lateral concave surfaces are known, as in the case of recesses formed wells, the lock secret in conjunction with the Main core tumbler and main housing tumbler phrases or pairs set. Moreover, the presence of polygonal grooves and circular concave grooves known, for example, by longitudinal channels of the Formed for the purpose of leadership (in the introduction of the Key in the key channel of the castle) in the main areas of the castle Key shank of toothed keys are provided. Besides, that is Presence of this type of grooves in flat keys known to the thickness of the Enlarge key shaft so that it can be reversed and the Wells of the main combination can be incorporated. It is of course also the presence of key channels in the lock known the reciprocal or complementary to the shanks of the keys with the mentioned forms are.

So far, no key shafts are known, which are provided with a cross section in on the same main surface of the key shaft or on the same Narrow side of the key shaft concave curved and convex at the same time curved sections and even sections with any inclination present which are combined with the above features and with the peculiarity that these concave and convex curves are circular (constant radius) or non-circular (variable radius).

On the other hand, it should be noted that so far by the cross profile of the key shank and the key channel formed binom (apart from the wells of the Main combination, which are incorporated in these) exclusively with the function of Inserting the likely valid key. This use extends only to the extent that it is ensured that a key is not in the lock can be used when the cross profile of his key shank larger Dimensions, as the key channel; there is no obstacle, a key whose key shank has a smaller profile than the key channel. This results in the possibility of illegal copies of keys with a procedure starting from a profile with smaller dimensions, where material and on it the combination wells of the valid key be reproduced; This will be the precautions of the manufacturer of Keys to destroying keys with stems made exclusively for Companies are suitable for the reproduction of keys expressly from the Manufacturers are authorized; including the possibility of counterfeiting without Need of applying material, because the fake key shank something has more play in the key channel.

The invention has for its object to provide a system of the type mentioned above create an increased copy protection and an increased number of Combinations.

This object is achieved by the features specified in claim 1.

Advantageous embodiments and developments of the invention will become apparent from the Dependent claims.

The present invention proposes a system of a key and a Security lock in front, in which the cross profile of the key shank on the same Side of its longitudinal median plane through an array of convex curved, concave curved and straight sections is formed, which are both perpendicular to the width of the Key shank and are referred to as transverse sections, or which may be parallel to the plane of the key shank, being lateral extending portions are called, or be the inclined portions can, with all these among themselves of the type, the number and the position can be combined, with all these sections additionally include concave depressions can, as related to the formation of the castle secret in connection with each Sets of main core tumbler pins and main housing tumbler pins of the stator are known, these sections have the peculiarity that the smooth Surface of the shaft is retained without recognizable indentations and they only by their geometric shape an infinite number of points for the investment of Sets of auxiliary core tumbler pins and auxiliary housing tumbler pins which are resiliently biased against a second spring, and exclusively in conjunction with the exact profile of the smooth surface the condition of additional or alternative lock secrecy, in addition to the sets of main core tumbler pins and main housing tumblers, these sets from an auxiliary core tumbler pin and an auxiliary housing tumbler pin radial axes or non-radial axes with respect to the rotor or core installed are.

This construction causes a revolution over the known in the sense that in addition to the usual and exclusive (to date) condition of complementary shape to the key channel for insertion into the lock Cross profile of the key shank of the key as well in active and determinative Way to validate one and only one key for each lock. This is due to the fact that the concave curved, convex curved and straight oblique sections without need of incorporating any Combination wells in this an infinite amount of for the fake not contributing to predictable points and being with any inclinations auxiliary tumbler pins the combination can come into contact, and in addition to the actual main tumbler pins of the combination are determinant to one to establish clear castle secrecy of the castle. This means that one Key shank with similar profile to a valid key, but with a smaller one Dimension, not allowing the rotation of the key, even if the recesses mimicked the combination of conventional type, which incorporated into the key shaft were. This is because it is not possible to know where (in Longitudinal or transverse direction) of a smooth, concave curved, convex curved or oblique surface may abut an auxiliary Kernzuhaltungsstift the combination, the may have any inclination (radial or non-radial). It is accordingly possible to specify that any rounding, the cross profile of the key shank as such has an active and determining element in determining the Castle secret of the castle is that according to the system of the invention is trained. Of course, in these new surfaces depressions of traditional combination and they will also be present.

These advantages of the system according to the invention do not result in the usual Keys, regardless of whether they are rounded, "flat" or "toothed" because these all have a uniform shaft, starting from a regular shaft (For example, rectangular) output profile is formed in the depressions in shape are arranged by right-angled grooves, and an auxiliary core tumbler pin or arrange a main core tumbler pin in a part that does not have a notch, only assuming that this tumbler pin against the uniform Thickness of the key shaft presses at this point, so logically an arbitrary one Key shank, which is complementary to the key channel, is valid in this regard.

The immediate and main advantage of the system according to the invention consists in that it allows the manufacturer of the locks, an absolute control over the Transverse profile of the key shank to have its key, which ensures that only he with this particular form of the key shaft copies his keys can manufacture for this system, or that this with his express consent because only he knows how many of these auxiliary tumbler pins or main combination tumbler pins where and how are arranged, with the smooth areas the concavely curved, convexly curved or inclined parts of the transverse profile of the Collaborate key shaft.

Another important advantage is the large variety of combinations in this inventive system, compared with the known systems.

Furthermore, the large inherent difficulty in copying the general cross-sectional profile of the key shaft to be highlighted by this system is formed because, if this is not very precise, it does not fit; if it's a little bigger is, the shaft can not enter the keyway, and if it is slightly smaller than the exact value is, so it does not fulfill the combination.

According to the system of the invention and a key from the flat and reversible type, where the main castle secrecy in the main areas of the Key shank are formed in these major surfaces of the key shank some transverse profiles present, the axisymmetric to the longitudinal axis of the key shaft by said arrangement of convexly curved, concavely curved and straight, transverse, parallel or oblique sections formed in expedient manner in terms of their nature, quantity and position are arranged.

Also, a key is of the splined type, where the main lock secret formed with respect to one of the narrow edges of the key shank is, in at least one of the major surfaces of the key shank, the transverse profile through the said arrangement of convexly curved, concavely curved and rectilinear, formed parallel or oblique transverse sections, which expediently are arranged with regard to their type, number and position; in this case it is a toothed, non-reversible key. For toothed key sees the Invention also provides that both major surfaces of the key shank a cross profile characterized by the said arrangement of convexly curved, concave curved and rectilinear, parallel or oblique transverse sections is formed, which expediently in terms of their nature, number and position are arranged. In this regard, it is envisioned as a possible embodiment in which the cross sections of both major surfaces of the key shank of the toothed Locks are unbalanced to each other, what toothed, irreversible Key is applicable; Another possible embodiment is that the Cross profiles of both major surfaces of the key shank of the toothed key symmetrical with respect to the longitudinal median plane of the flat shank of Keys are what is also applicable to non-reversible, keyed keys; Another possible embodiment is that these cross sections of both Main surfaces of the key shank of the toothed key symmetrical to each other with respect to the longitudinal axis of the key shank are what a special application for toothed, reversible key has.

Another very important feature of this system is the possibility of Families of keys for different types of users, markets, etc. on the Basis of a change in the curvature, depth and relative longitudinal displacement of the form according to the invention formed profiles.

It is further apparent from the foregoing that the inventive system allows the use of one or more of the usual main tumbler pins, the be placed in a place that has no depressions in the surfaces of the according to the invention has key shank, for example, to subordinate for others as a master key of castles of a community. In the same way it is theoretically possible that this is simultaneous with the arrangement of the auxiliary tumbler pins also takes place on other surfaces that do not concave depressions of the Have key shaft, and it is also possible that simultaneously different These auxiliary tumbler pins are present, including the case where radial Auxiliary tumbler pins and non-radial auxiliary tumbler pins with respect to the rotor of the Castle are present at the same time.

Another special feature of the invention is that the cross profile for a any of the main surfaces of the key shank of the key combinations of convexly curved, concavely curved and straight, parallel and oblique Cross sections, the lateral half profile of one or more letters correspond to the alphabet; this is through the insertion and peculiar reciprocal Combination of the convexly curved, concavely curved and oblique sections possible. In particular, it is provided that combinations of the convexly curved, concavely curved and straight parallel or oblique transverse sections present are consistent with the lateral half profile of the letters A, E, S and T. In In this regard, a preferred combination of the convex curved, concave curved and straight, parallel and oblique transverse sections considered, the consequences of side effects determined on both major surfaces of the key shaft Semi-profiles of the letter T-E-S-A set, with a mutual axial Symmetry with respect to the longitudinal axis of the key shank are arranged, wherein also a preferred combination of the convexly curved, concavely curved and straight, parallel or oblique transverse sections is taken into account the two main surfaces of the key shaft respective consequences of lateral Semi-profiles of the letters S-T-S form with mutual axial symmetry are arranged with respect to the longitudinal axis of the key shaft. This concretization is in no way limiting, and the combination of the letters may vary the number (for example, DUPLO, which includes five letters) or the sequence or be different from the distance hereof.

Drawings and reference numbers

For a better understanding of the nature of the present invention is shown in the attached Drawings a preferred industrial embodiment shown that only the Peculiarity of an illustrative and non-limiting example.

Figure 1 is a perspective view showing a lock (2) cut transversely in which a key (1) is inserted, which is connected to a key shaft (3) according to of the invention is provided on the sets of main core tumbler pins (9) and main housing tumbler pins (10) as well as auxiliary sets of tumbler pins and Counteracting pins (12-13) act obliquely, the left Set along a radial axis, while the right set along a non-radial Axis runs. This figure includes two enlarged details, of which one refers to the cross section of the key shaft (3), which is in orthogonal Projection is shown while the other on the auxiliary sentences of oblique Tumbler pins and counter-clocking pins (12-13), also in one orthogonal projection.

FIG. 2 is an enlarged front view of a lock with a key as in FIG Figure 1, but with only a single auxiliary set of tumbler pins and Counter-locking pins (12-13) is shown in an inclined radial position.

FIG. 3 is like FIG. 2, but with a flattened profile at the contact point the auxiliary tumbler pin (12) of the rotor.

Figures 4 to 6 are similar to Figure 2 but show different ones Possibilities of installation of sets of secondary tumblers (12) and secondary mating pins (13).

Figure 7 shows the lock (2) of Figure 1, but refers only to the sentence from the main core tumbler pin (9) and the main housing tumbler pin (10).

Figure 8 is a combination of Figures 2 and 7, but with a flattened profile for operating the set of the main core tumbler pin (9) and the main body tumbler pin (10).

FIG. 9 shows a transverse profile of the key shaft (3) according to the invention; the figures Figs. 10 to 14 show various variants obtained therefrom.

Figures 15 and 16 show in perspective and with small magnification two profiles of the key shaft (3) according to the invention, which in their edges with lateral Half profiles coincide with letters.

The figure (17) shows a key of the kind of combination recesses (15) in the Edge of the shaft (3) and which is formed according to the invention. In the enlarged detail is shown the corresponding cross section of this key.

Figure 18 shows a section similar to that of Figures 2 to 8, but refers on a key of the type in which the combination wells (15) in the Edge of the shaft (3) are located.

1. - Schlüssel

2. - Schloss

2a. - Rotor oder Kern des Schlosses

2b. - Stator oder Gehäuse des Schlosses

3. - Schaft des Schlüssels (1)

4. - konvex gekrümmter Abschnitt

5. - konkav gekrümmter Abschnitt

6. - gerader oder ebener querverlaufender Abschnitt

7. - paralleler ebener Abschnitt

8. - schräger ebener Abschnitt

9. - Haupt-Kernzuhaltungsstift der Kombination

10. - Haupt-Gehäusezuhaltungsstift der Kombination

11. - erste Feder für den Satz der Haupt-Kern- und Gehäusezuhaltungsstifte (9-10)

12. - Hilfs-Kernzuhaltungsstift

13. - Hilfs-Gehäusezuhaltungsstift

14. - zweite Feder für den Satz der Hilfs-Kern- und Gehäusezuhaltungsstifte (12-13)

15. - Vertiefungen der Kombination in der Kante

In these figures, the following reference numerals are indicated:

1st - key

2nd - Castle

2a. - Rotor or core of the lock

2 B. - Stator or housing of the lock

3. - shaft of the key (1)

4. - convex curved section

5. - concavely curved section

6. - straight or flat transverse section

7. - parallel plane section

8th - inclined plane section

9. - Main core tumbler of the combination

10. - Main body tumbler of the combination

11. - first spring for the set of main core and housing tumbler pins (9-10)

12th - Auxiliary Kernzuhaltungsstift

13. - Auxiliary housing tumbler pin

14. - second spring for the set of auxiliary core and housing tumbler pins (12-13)

15. - depressions of the combination in the edge

Explanation of a preferred embodiment

With respect to the above figures and reference numerals is in the attached Drawings a preferred embodiment of a system of a key and a combination lock having a key with a flat Key shank (3) is provided, which has transverse profile, the reciprocal to a Key channel in the core or rotor (2a) of a combination lock (2) is trained. Between this rotor (2a) and the housing or stator (2b) of Lock (2), in which this rotor (2a) can rotate guided, is a variety of Sets of a main core tumbler pin (9) and a main housing tumbler pin (10), which are resiliently biased by a first spring (11), causing it results in that when the flat key shank (3) of a valid key is inserted, These tumblers are arranged or arranged aligned, and the rotation of the rotor (2), which causes the opening of the lock.

According to the system according to the invention (FIG. 1), this transverse profile of the Key shank (3) of the key (1) on the same side of its longitudinal Median plane through an array of convexly curved (4), concavely curved (5) and straight sections formed either perpendicular to the width of the Key shank (3) and are referred to as transverse (6), or the run parallel to the plane of the key shank (3) and referred to as the side (7) or inclined or inclined (8) (see enlarged detail of Figure 1), wherein all these sections with each other in terms of their nature, quantity and Position can be combined, and with all these sections in addition the known concave depressions may have to lock the secret in Connection with respective sets of main core tumbler pins (9) and main housing tumbler pins (10), these sections (4-5-6-7- and 8) the Special feature that they have the entire surface in a smooth condition and without Perceptible depressions hold, where they only by their geometric shape infinite number of points for the attachment of the sets of auxiliary core tumbler pins (12) and auxiliary housing tumbler pins (13) resiliently displaced by a second spring (14) are biased, and only in conjunction with the exact profile of this smooth surface, form a state of castle secrecy, in addition or alternatively to the lock secret of the sets from the main core tumbler pin (9) and the main housing tumbler pin (10), these sets of auxiliary core tumbler pins (12) and auxiliary housing tumbler pins (13) along radial or non-radial axes with respect to the rotor (2a) are arranged.

This construction according to the invention causes a revolution in terms of traditional function of the key shaft (3) of the key and its complementary receiving channel in the rotor (2a) of the corresponding lock (2) formed unit. So far, the transverse profile of the key shank (3) simply fulfilled one Leadership function in this key channel, but did not actively participate in the determination the castle secret of the castle (2), but this castle secret was formed on the basis of depressions, which are incorporated in the shaft, both at flat keys (1) as well as with toothed keys (1). Now the cross profile is of the key shaft (3) itself an active element in the determination of the Castle secrecy by having curved surfaces with constant or offers variable radii and inclined surfaces with any inclination, the countless unpredictable and undetectable locations for the direct operation of the Sets of auxiliary core tumbler pins (12) and auxiliary housing tumbler pins (13) as well as the sets of main core tumbler pins (9) and main housing tumbler pins (10).

In fact, as in FIGS. 1 and 8, they are flat Reversible key is shown, in which the main opening combination or the Castle secret in the main surfaces of the key shank (3) is formed in these Main surfaces of the key shank (3) provided some transverse profiles, with axial Symmetry with respect to the longitudinal axis of the key shank (3) through said Arrangement of convexly curved (4), concavely curved (5) and rectilinear, parallel (7) or oblique (8) transverse sections are formed, which in more convenient Are arranged in terms of their nature, their number and position. At a Comparison of Figures 2 and 3 can be seen that by incorporating a convex curved portion (4) (Figure 2), the actual profile of the Key shank (3) goes out and has no combination wells, the auxiliary housing tumbler pin (13) (Figure 3) from its position of arrangement of Figure 2 out is shifted and can prevent the rotation of the rotor (2b). Another example results in respect of the vertical set of a main Kernzuhaltungsstift and a main housing tumbler pin (9-10), as shown in Figs. 7 and 8, this case relates to a straight, parallel section (7).

The system according to the invention favors the formation of key families on the Basis of a change in the relative displacement of a particular profile and the Curvature and depth of the elements forming this profile. This is based on the figures 9 14, of which FIG. 9 shows the initial profile of a key shank (3). shows, while the figures 10 to 14 show some variants thereof, by means of said change in relative displacement, curvature and depth, wherein in these figures 10 to 14 the parts which are changed with respect to FIG. 9 surrounded by a circle to facilitate visual comparison.

A special feature of the invention is that with respect to any of Main surfaces of this key shank (3) of the key (1) the cross profile Combinations of convex curved (4), concave curved (5) and straight, transverse extending (6) sections which extend parallel (7) or obliquely (8) and the with the lateral half-profile of one or more letters of the alphabet to match. In particular, there are combinations of convexly curved (4), concave curved (5) and straight transverse (6) sections parallel (7) or oblique (8) with the lateral half profile of the letters A, E, S and T. to match. In this regard, a preferred combination conveys the convex curved (4), concavely curved (5) and rectilinear, transverse (6) Sections that are parallel (7) or oblique (8) on both major surfaces of the Key shaft respective sequences of lateral half profiles of the letters T-E-S-A fixed with a mutual axial symmetry with respect to the longitudinal axis of the Key shank (3) are arranged; Another preferred combination of the convex curved (4), concavely curved (5) and straight transverse sections (6), which are parallel (7) or oblique (8) places on both major surfaces of the key shank (3) respective sequences of lateral half profiles of the letters S-T-S fixed with mutual axial symmetry with respect to the longitudinal axis of this key shank (3) are arranged. This means that it is possible with this proposed system, Profiles of the key shank (3) to be formed with the semi-profiles of seals, Anagrams or identification marks of the manufacturer, user or user Application target of the product. In Figs. 15 and 16 are examples shown hereof; Figure 15 shows a profile from top to bottom (in each Main surface) with the lateral half profiles of the sequence of capital letters T-E-S-A with outlines inserted to facilitate visual comparison who completed these letters; FIG. 16 shows a similar example, which refers to the sequence of capital letters S-T-S. It is obvious that this is applicable to many other letters of the alphabet.

As shown in Figs. 17 and 18, the invention includes the case of Figs a key (1) of the toothed type, in which the main opening combination in a the narrow sides of the key shank (3) is formed, in at least one of Main surfaces of the key shank (3) the transverse profile by such an arrangement of convexly curved (4), concavely curved (5) and straight transverse (6) Sections are formed which are parallel (7) or oblique (8), and in an appropriate manner are arranged in terms of their type, number and position.

An embodiment in this regard is that both major surfaces of the Key shank (3) have a transverse profile, which by such an arrangement of convex curved (4), concave curved (5) and straight transverse (6) Sections are formed which extend parallel (7) or obliquely (8), in a suitable manner in terms of their type, number and position are arranged, so that there are three possible Solutions result, one in which these cross sections on both main surfaces of the Key shank (3) of the toothed key (1) are asymmetrical to each other, one Further, in which the transverse profiles of the two main surfaces of the key shank (3) of the toothed key (1) to each other with respect to the longitudinal center plane of the Key shank (3) are symmetrical, and another case where the cross sections both major surfaces of the key shank (3) of the toothed key (1) mutually are symmetrical with respect to the longitudinal axis of the key shank (3), the two first cases are suitable for toothed, non-reversible keys, while the third Case suitable for reversible, toothed key.

In a simpler or more economical solution, the sets of auxiliary core tumbler pins (12) and auxiliary housing tumbler pins (13) connected to the groove interact, be omitted, and the sampling function can be based on a sentence a main core tumbler pin (9) and a main housing tumbler pin (10) be transmitted.

It is envisaged embodiments of both "flat keys" and "toothed Keys ", and according to the invention, it is possible to use a master key to create both "flat key" locks and "toothed" locks Key "opens, and in such an embodiment, each of the locks with a "quality / cost" solution, the corresponding one Closing point corresponds to what is destined to make locks of high quality and high costs for high security security and others for lower security Quality and lower costs for other secondary closure points of the arrangement may have.

According to the invention it is including the use of grooves with a certain geometry and dimension possible, changes by the distance between the grooves and with the relative position of a group of grooves opposite to the Longitudinal axis of the shaft (3) to achieve, and with these modifications can be a very large number of different combinations and series are created.

According to the invention, the cross profile of the key does not necessarily have to be reciprocal the keyway present in the rotor (2a), it being possible to have some Provide grooves in the key, so that the insertion of the key in the reciprocal key channel of the rotor or core, while other grooves of the Key must not be reciprocal, but on the contrary combination functions with the sets of auxiliary core tumbler pins and auxiliary housing tumbler pins (12 and 13).

Claims (13)

A system comprising a key and a security lock having a key (1) provided with a flattened key shank (3) having a transverse profile reciprocal to a keyway formed in the rotor (2a) of a security lock (2) in which said rotor (2a) can rotate in a suitable manner, comprising a number of sets of main core tumbler pins (9) and main housing tumbler pins (10) resiliently biased by a first spring (11), and which are positioned at the moment of insertion of the key shank (3) of the valid key and allow the rotation of the rotor (2a), thereby causing the lock (2) to open, characterized in that the transverse profile of the key shank (3) in at least one side of its longitudinal center plane is formed by convexly curved sections (4), concavely curved sections (5) and straight sections, which are located s may be referred to as lateral sections (7) perpendicular to the width of the key shaft (3) as transverse sections (6) or parallel to the plane of the key shaft (3), or may extend as inclined sections (8), all sections being of the type, the amount and the position with respect to the axis of the shaft (3) are combinable with each other; the entire surface of the smooth key, with no apparent dimples and only the geometric shape of the sections, giving an infinite, undetectable number of possible abutment points for sets of auxiliary core tumbler pins (12) and auxiliary housing tumbler pins (13) which are resilient are biased by a second spring (14) and which, in conjunction with the exact profile intended for that smooth surface alone, provide additional or alternative lock secrecy in addition to the master lock secret of the sets of main core tumbler pins (9) and main Housing tumbler pins (10). A key and safety lock system according to claim 1, characterized in that the sets of auxiliary core tumbler pins (12) and auxiliary housing tumbler pins (13) are installed along radial axes or along non-radial axes with respect to the rotor (2a). A key and security lock system according to claim 1 or 2, characterized in that the portions comprise known concave combination recesses for forming the lock secret in association with respective ones of the sets of main core tumbler pins (9) and main housing tumbler pins (10). System with a key and a safety lock according to any one of the preceding claims, characterized in that in a key (1) of the flat and reversible type, in which the main opening combination is formed in the major surfaces of the key shank (3), in these major surfaces of the key shank ( 3) some transverse profiles are provided which are formed with axial symmetry with respect to the longitudinal axis of the key shank (3) by said arrangement of convexly curved sections (4), concavely curved sections (5) and straight transverse sections (6) which are parallel (7th to 7th) ) or obliquely (8) arranged portions, and which are arranged in an appropriate manner in terms of their type, their number and position. System with a key and a security lock according to one of the preceding claims, characterized in that in a key (1) of the toothed type, in which the main opening combination formed by combination recesses (15) in one of the narrow sides of the key shaft (3) is formed in at least one of the major surfaces of the key shank (3), the transverse profile by said arrangement of convexly curved portions (4), concave curved portions (5) and straight transverse sections (6) parallel (7) or obliquely (8 ), which are appropriately arranged in terms of their type, quantity and position. System with a key and a safety lock according to one of the preceding claims, characterized in that the transverse profile of both major surfaces of the key shank (3) is characterized by said arrangement of convexly curved sections (4), concavely curved sections (5) and straight transverse sections (6). is formed, the parallel (7) or obliquely (8) extend, these sections are arranged in an appropriate manner with regard to their type, their number and position. System with a key and a security lock according to claim 6, characterized in that the transverse profiles of both major surfaces of the key shank (3) of the toothed key (1) are asymmetrical to each other. System with a key and a security lock according to claim 6, characterized in that the transverse profiles of both major surfaces of the key shank (3) of the toothed key (1) are symmetrical to each other with respect to the longitudinal center plane of the flattened key shank (3). System with a key and a security lock according to claim 6, characterized in that the transverse profiles of both major surfaces of the key shank (3) of the toothed key (1) are symmetrical to each other with respect to the longitudinal axis of the key shank (3). System with a key and a safety lock according to claims 1 to 6, characterized in that with respect to any of the major surfaces of the key shank (3) of the key (1), the transverse profile comprises combinations of convexly curved sections (4), concavely curved sections (5). and straight transverse sections (6), which may extend parallel (7) or obliquely (8), these sections coinciding with the lateral half profile of one or more letters. System with a key and a safety lock according to claims 1 and 6, characterized in that combinations of convexly curved portions (4), concave curved portions (5) and straight transverse portions (6) parallel (7) or obliquely (8) are provided, which coincide with the lateral half profile of the letters A, E, S and T. System with a key and a security lock according to claims 1 and 6, characterized in that a preferred combination of the convexly curved portions (4), the concave curved portions (5) and the straight transverse portions (6), the parallel (7) or oblique (8), on both major surfaces of the key shank (3) form some sequences of lateral half-profiles of the letters TESA, which are arranged with mutual axial symmetry with respect to the longitudinal axis of the key shank (3). System with a key and a security lock according to claims 1 and 6, characterized in that a preferred combination of the convexly curved portions (4), the concave curved portions (5) and the straight transverse portions (6), the parallel (7) or obliquely (8), on both major surfaces of the key shank (3) defines some sequences of lateral semi-profiles of the letters STS, which are arranged with mutual axial symmetry with respect to the longitudinal axis of the key shank (3).

Images