JP2002527650A - Improved cylinder lock system - Google Patents

Abstract

SUMMARY A profile comprising a shaped recess (74) on a first side of a blade (64) and a projection (72) aligned on an opposite side of the blade. Key cooperates with a cylinder lock that has the ability to capture unauthorized keys. The lock has an auxiliary locking pin (50) cooperating with the key recess and a movable plate member (34) cooperating with the key projection. Both the depression and the protrusion must be present and sized and shaped appropriately for a properly keyed key to operate the lock.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD OF THE INVENTION

The present invention improves the security provided by mechanical locks, and in particular, the availability of key blanks that can be cut to form unauthorized keys (non-authorized keys) for such locks Is minimized. More particularly, the present invention relates to improved locks and novel keys that cooperate to form a lock system that provides highly secure access restrictions. Accordingly, a primary object of the present invention is to provide a new and improved method and apparatus having such features.

[0002]

[Prior art]

Mechanical locks employing an arrangement of one or more pin tumblers are well known in the art. In such conventional locks, the pin tumbler is a "stack"
And is radially displaceable with respect to the axis of rotation of the plug or core, such displacement being responsive to inserting a key into a keyway defined in the core. Occurs. The stack of pin tumblers comprises at least an upper pin or a drive pin,
It includes a driven or bottom pin that is adjacent and axially aligned, the pin being located in a pin chamber provided in both the core of the lock and the shell surrounding it. The stacks of pin tumblers are resiliently biased in the direction of the axis of rotation of the core, and when there is no key in the keyway, one pin of each stack straddles the gap between the core and the shell; Thus, the relative rotation between them is prevented. Due to the communication between the keyway and the pin chamber in the core receiving the bottom pin, the pin tumbler stack is displaced when a key properly engaged in the keyway is inserted. The interface between the drive pin and the bottom pin is located at a shear line defined around the outside of the part. Thus, a properly keyed key allows the core to rotate within the shell with the bottom pin while the drive pin remains stationary. The rotation of the core biases the locking system or latch through the action of a cam or a tailpiece mechanically coupled thereto.

[0003] Locks of the type briefly discussed above are known in the art as "cylinder" locks. The most common approach to breaking a cylinder lock consists in making an unauthorized key. Protecting against this cylinder lock breakage is not possible by providing locks with keyways having complex, i.e., highly indented, contours, or by using various arrangements of pin tumbler stacks. is there. The reason for this impossibility is, in part, that various manufacturers provide key blanks with blades, which are machined and imaged using conventional key cutting machines,
This is because after cutting, it has a contour that can be used for tablets sold in large quantities. Thus, there is a need for a locking system that has improved security by minimizing the possibility of producing a replacement key blank that has not been authorized for a long time, and in particular, a single source of the key portion of the system. There is a need for a lock system that allows lock producers to perform key control. In addition, a high level of security is intended to mean that the lock "captures" unauthorized keys, particularly partially patterned keys in an attempt to break.

[0004]

Summary of the Invention

The present invention overcomes the above-discussed shortcomings and shortcomings of the prior art, while providing a novel locking system characterized in part by a key having a unique profile. The locking system according to the invention also allows the relative rotation of the core in cooperation with the unique key profile and mechanically traps unauthorized keys in the keyway under certain conditions New and improved cylinder locks.

[0005] A lock system according to the present invention includes a cylinder lock having a core, the core being provided with a generally arcuate cutout at a longitudinal position of at least one pin tumbler stack. In a locked lock, ie, before the core rotates relative to the shell, the cutout is not aligned with the pin tumbler stack. The cutout communicates with the keyway through an opening provided on the first side of the keyway. A plate member or portion is placed within the cutout, the plate member being configured in size and shape relative to the core to allow limited movement within the cutout, such movement being within the shell. Guided to the diameter part. Movement of the plate member is effected by a suitably shaped and arranged cam projection provided on the first side of the authorized key and extending through an opening in the first side of the keyway. The cam projection extends beyond the side face of the blank formed in the key and into said arc-shaped cutout. The plate member acts as an extension of the core when moved along a path defined by the inner diameter of the shell in response to contacting the cam projection on the authorized key and provides a shear line. Gives generally matching edges. Thus, if the authorized key is in the keyway, the core will not be blocked by the drive pins of the pin tumbler stack at the cut-out position, and there will be no radial movement of the drive pins. Thus, it becomes possible to rotate past the alignment point between the drive pin and the plate member. However, in the case of an unauthorized key, ie a key lacking a cam projection, the rotation of the core displaces the outer edge of the plate member below the shear line, partially defining an opening. When the core is fully rotated relative to the shell, the drive pin moves to its opening, perfectly aligning the pin tumbler chamber in the shell with the cutout in the core. Accordingly, the drive pin moves radially toward the rotation axis of the core so as to straddle the shear line, and prevents further rotation of the core in both clockwise and counterclockwise directions. Thus, the lock is deactivated and the unauthorized key is trapped in the keyway.

[0006] The locking system according to the invention also includes a depression suitably shaped and arranged on the side of the key blade opposite the cam projection. This depression is formed simultaneously with and in alignment with the cam projection located on the opposite side. The recess aligns with a chamber in the core that receives the auxiliary locking pin. This chamber is oriented, at its most convenient, across its plane defined on the side of the blank formed in the key. The auxiliary locking pin is elastically displaced outwardly so that its first end engages a cooperating recess within the inner diameter of the shell. That is, the auxiliary locking pin straddles the shear line when the lock is in the locked state. The outer end of the auxiliary locking pin and the side wall of the cooperating recess in the shell provide a support between the core and the shell when the auxiliary locking pin can move against the biasing force of its spring. The relative rotation causes the auxiliary locking pin to be cammed out of the recess in the shell so that the outer end of the locking pin slides on the inner diameter of the shell upon further rotation of the core. Is done. However, this camming occurs only when there is a key blade in the keyway having a depression configured and arranged to receive the second end of the auxiliary locking pin. Thus, the authorized key for the locking system according to the invention consists of a uniquely indented and arranged cam projection on its first side and an appropriately arranged and indented locking on the opposite second side. It must have a pin receiving recess.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention may be better understood, and its many objects and advantages made apparent to those skilled in the art by referencing the accompanying drawings, wherein like reference numerals refer to like elements throughout the several views. Will be.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION

Referring to the drawings, the cylinder lock of the present invention is shown generally at 10. Tablet 10
Conventionally includes a core 12 that is rotatable relative to a shell 14 about an axis of rotation.
In the disclosed embodiment, shell 14 includes an extension or bible 16. A single linear array of pin chambers, such as chamber 18, is provided in bible 16. The pin chamber 18 is axially aligned with the pin chamber 20 in the core 12 when the lock is in the locked state. The aligned pin chamber is provided with a pin tumbler stack (including the upper or drive pins 22 and the driven or bottom pins 24 in the disclosed embodiment). The pin tumbler stack
The core 12 is elastically deflected radially in the direction of the axis of rotation. In the disclosed embodiment, such biasing is achieved by a compression spring, such as the spring shown schematically at 26, that contacts an outer end of the drive pin. A tailpiece or cam (not shown) will be connected to the end of the core 12 which is located opposite the end defining the keyway entrance. The tailpiece is connected to a latching mechanism or the like, and thus a lock is employed to selectively prevent and permit access to the space on one side of the door to which the lock is attached.

The lock as described above has a conventional structure. Thus, it will be appreciated by those skilled in the art that the configuration and location of the pin chamber and pin tumbler stack can be changed without departing from the invention. For example, the pin chambers may be in multiple arrays, which may be angularly offset from one another, and the pin tumbler stack may include any number of pins.

According to conventional construction, a keyway 28 is provided in the core 12 as can be seen from FIGS. 4, 6 and 7. The keyway communicates with the inwardly located end of the pin chamber 20 in the core and has a contour or cross-sectional area selected by the lock manufacturer. Conventional keyways include a plurality of words that partially define a cross-section of the keyway. The correct key, that is, a key that can be inserted into a keyway, must have a blade with side surfaces that are notched to complement these words. Thus, starting with a key blank having parallel sides, a longitudinal cut is made such that the cross section of the blade matches the cross section of the keyway. In addition, to operate the lock, the key blade is further cut or barbed into a lock combination determined by the position of the pin tumbler stack and the relative lengths of the individual pins forming the stack. It must have conforming surface irregularities. In the least complex arrangement, as shown in the drawing, the key is barred by removing material from the upper edge of the blade, creating a regular knurled edge. Conventional prior art cylinder lock combinations are thus defined by the profile and barb of the key blade. When a properly keyed key is inserted into the keyway, contact is made between the irregular upper edge of the key blade and the bottom pin, FIG.
As shown in FIGS. 6 and 7, the pin tumbler stack moves against the bias of the spring 26, and at the shear line between the core 12 and the shell 14, the drive and bottom pins of each pin tumbler stack move. The interface between them will be arranged. The pin tumbler stack is repositioned from the locked state, i.e., one pin of each of the stacks straddling the shear line and partially disposed in both the core and shell pin tumbler chambers. The rotation of the core with respect to the shell is allowed. In summary, in a conventional cylinder lock, the key blank defines a contour on the side that matches the cross-section of the keyway to allow relative rotation between the core and the shell. The key blank must be cut to provide a surface irregularity commensurate with the lock combination defined by the pin tumbler stack.

In accordance with the invention, at least one location of the pin tumbler stack has an arcuate portion cut from the core. This part is defined by the wall 30 and is straight and continuous between the two points interrupting the shear line, with the exception of the exceptional parts to be shown below. In the disclosed embodiment, the spacing between the keyway 28 and the wall 30 is from the first end of the wall located adjacent the bottom of the keyway to the outer end of the pin chamber 20. It increases to the opposite end of the wall 30. Thus, the wall 30 defines a slope. An opening 32 in wall 30 provides communication between the keyway and the space formed by the arcuate cutout. In the disclosed embodiment, the opening 32 is located at the base of a slot that defines a portion of the keyway profile. It will be appreciated that other arrangements are possible, as disclosed, and that the opening 32 has a maximum depth exceeding the thickness of the wall separating the arcuate cutout from the keyway. Is defined by

A movable plate member 34 having a similar but different shape to the bow-shaped cutout defined by the wall 30 is inserted into the cutout. The plate 34 has a first straight side 36 facing the wall 30. In the disclosed embodiment, the side 36 is provided with a protrusion 38 that extends to the opening 32. The plate 34 also has a first arcuate side 40 extending from a first end of the side 36, the arc of the side 40 being substantially the same as the arc of the core 12. The arcuate sides 40 terminate or join at a second side surface 42, which may be arcuate or straight as shown. The side surface 42 is the second end of the straight side 36, i.e. the side 3 located on the upper face of the keyway.
6 to the end. The width of the plate 34 is smaller than the diameter of the pin chamber 18 of the bible 16, as can be better understood from FIG.

The core 12 is provided with a blind hole 44 that partially extends into the cutout partially defined by the wall 30. Hole 44 has a size and shape complementary to the lower end of drive pin 22. The axis of the hole 44 intersects the bow cutout. as a result,
The plate 34 extends into the blind hole 44 and may substantially straddle. Depending on the position of the plate 34, access to the holes 44 of the pins 22 will be allowed or blocked. The position of the plate 34 is controlled in the following manner.

The cylinder lock according to the invention also comprises at least a first auxiliary locking pin 50. The pin 50 has an axis and is arranged to reciprocate in a pin chamber 52 provided in the core 12. The chamber 52 communicates with the keyway 28 at a first end,
At the opposite end, it is connected around the core 12. Chamber 52 has an axis that, in the disclosed embodiment, is oriented transversely to plane A-A defined by the axis of the pin tumbler stack, and thus: Surface A-A
Is the surface defined by the keyway. The chamber 52 has two portions of different inner diameters, thus defining a shoulder on which the first end of the biasing spring 54 sits. The opposite end of the biasing spring 54 pushes the pin 50 in the direction of the shell 14 against a shoulder on the pin 50 defined by the junction of the two different diameter sections of the auxiliary locking pin. Shell 14
Has a recess 56 for receiving an end of an auxiliary locking pin 50 disposed outside the keyway.
Is provided. In the locked state of the cylinder lock, the outer end of the auxiliary locking pin 50 is disposed in the recess 56, for example, as shown in FIG. Pin 50 extends across the shear line. Thus, the auxiliary locking pin 50 cooperates with the pin tumbler stack to prevent rotation of the core 12 when no authorized and properly keyed key is present in the keyway 28.
The opposite, inwardly disposed end of the auxiliary locking pin 50 substantially coincides with the side of the keyway 28 normally, ie, when the lock is in the locked state.

In the disclosed embodiment of the lock according to the invention, the end located outside the auxiliary locking pin 50 and a part of the wall defining the depression 56, ie the direction of rotation of the core, A wall portion 58 extending from the deepest portion of the depression to the inner diameter of the shell 14 cooperates in the form of a cam follower and a cam surface, respectively. Thus, the core 12 with respect to the shell 14
When rotation of the auxiliary lock pin 50 is enabled in the following manner, the outer end of the cam follower of the auxiliary locking pin 50 causes the cooperating cam surface 58 of the recess 56 to rotate.
Upon climbing up, the resulting cam actuation drives the auxiliary locking pin 50 axially inward toward the keyway. Obviously, such axial inward movement does not occur unless there is a space having a size, shape and arrangement adapted to receive the inner end of the pin 50.

A key blank according to the present invention is shown generally at 60 in FIGS.
The key blank 60 includes a bow portion 62 and a blade portion 64, a portion of which is shown enlarged in FIG. As is conventional, the key blank 60 has a pair of opposedly disposed planar sides 66, 68, and a top edge 70 and an oppositely located bottom edge. In the embodiment of the invention described herein, a single pin tumbler stack defines the conventional portion of the combination for operating a lock, and the upper edge 70 of the blade 64 is It will be cut into an irregular shape to define the barb. As the key blank 60 is shown, the profile of the key corresponding to the cross section of the keyway is scored in a conventional manner by scoring the sides 66 and 68, i.e., the planar side of the blank. Produced by removing material from a surface. Such scoring is typically performed by the lock maker,
In the case of the "alternate" key supplier, it is performed by the key blank producer. Often locksmiths also have machines for cutting flat sided key blanks to achieve the required profile.

The key blank 60 differs from the prior art by providing a cam projection 72 on a first side thereof. The key blank according to the invention is also provided with a depression 74 on the second opposing side. The preferred method of creating the cam projections and depressions is a stamping operation performed from the side of the key blade that will have depressions 74.

FIGS. 4A and 4B show the operation of the lock according to the invention with the correct, ie authorized, key formed from the key blank 60 of FIGS. Keyway 28
When the correct key is inserted into the lock member, the cam protrusion 72 of the key blade lock and the protrusion 3
8 is achieved. Referring to FIG. 5B, it can be seen that the leading edge of the projection 72 slopes upward toward the top of the projection. The contact between the projections 72 and 38 results in a clockwise movement of the plate member 34 relative to the core 12. This movement is guided by the inner diameter of the shell 14, so that the plate member 34 is driven upwards such that the junction of the side 36 and the surface 42 is in a relationship adjacent the upper end of the wall 30. This adjacent relationship causes the side surface 42 of the plate member to straddle the blind hole 44. Accordingly, the core 12 is rotatable within the shell 14, and
In such a rotation, the side portions 42 of the plate 34 will initially prevent the drive pins 22 from entering the blind holes 44 as shown in FIG. 4B. As the rotation of the core continues, the arcuate side 40 of the plate 34 contacts the bottom of the drive pin 22 and pushes the drive pin against the displacement of the spring 26 to rotate the core to the unlocked position. become able to.

Simultaneously with the above operation, the cooperation between the cam surface 58 and the cam follower end of the auxiliary locking pin 50 drives the auxiliary locking pin inward, as shown in FIG. 4B. Such movement is permitted by the alignment of the key blade recess 74 with the pin chamber 52. While rotating the core to the unlocked position of the lock, the cam follower end of the auxiliary locking pin 50 will slide on the inner diameter of the shell 14.

Referring to FIG. 6, it has been shown that attempts to operate the lock of the present invention with a properly keyed key having a cam projection 72 but not having a depression 74 have been unsuccessful. ing. This is because the auxiliary locking pin 50 is easily understood from the figure.
Cannot be removed from the depression 56.

Referring to FIGS. 7A and 7B, it is shown that rotation of the core 12 within the shell 14 is permitted when a key that satisfies the lock combination other than the cam projection 72 is inserted into the keyway 28. . When the core is rotated clockwise, it carries the plate member 34. After a relatively small angle of rotation, the plate member will "flop" so that its side is adjacent to wall 30, as shown in FIG. 7B, and this "flop" action It may be caused by either or both the interaction between the drive pin 22 and the plate 34 biased by a spring or the effect of gravity. As the rotation of the core continues to the point where the blind hole 44 aligns with the pin chamber 18, the drive pin 22 reaches into the blind hole 44 above the plate member 34, on the side 42, under the influence of the spring 26. Driven up to. At this point, the drive pin 22 straddles the shear line, so that rotation of the core in either clockwise or counterclockwise direction is prevented. Further, the interaction between the immobilized bottom pin and the upper edge of the key blade causes the biased key to become trapped in the keyway, ie, cannot be removed. If this catching action is desired for both clockwise and counterclockwise rotation of the core 12, a key plate in which a second plate member is provided and the second projection is arranged opposite the projection 72 Is formed on the side part.

The lock according to the present invention may include a plurality of plates and a plurality of auxiliary locking pins 50 arranged opposite to each other. The positions of the plates and auxiliary locking pins may be reversed from those shown, and both relationships may exist in a single lock. Thus, as can be seen from FIG. 6, the shell 14 may be provided with a pair of opposed longitudinal grooves that conveniently define the depressions 56 and 56 '.

As can be seen from FIG. 5B, if the lock is provided with a plurality of plates 34 on the same side of the keyway, the projection 72 has a leading edge on the leading and trailing edges. An inclined surface on the surface will be formed. Similarly, if necessary (not shown) the depression 74
Have slopes at both ends.

While preferred embodiments have been shown and described, various changes and substitutions can be made without departing from the spirit and scope of the invention. Accordingly, it will be understood that the present invention has been described by way of illustration and not limitation.

[Brief description of the drawings]

FIG. 1 is a partial side view of a cylinder lock according to a preferred embodiment of the present invention, partially broken away to show details.

FIG. 2 is a perspective view of a key of the lock system according to the present invention.

FIG. 3 is a perspective view of the key of the lock system according to the invention, on the opposite side to FIG. 2;

4A and 4B are cross-sectional side views of the locking system according to the invention in different stages of operation, viewed from the direction transverse to FIG. 1 and of FIG. 1 in combination with the key of FIGS. 2 and 3; A lock is shown.

5A-5C are partial views of the key blade of FIGS. 2 and 3; FIG.

FIG. 6 is a view similar to FIG. 4, but illustrating an attempt to break a lock according to the present invention using a key having only one of the features of the blade of the present invention.

7A and 7B are views similar to FIG. 6, but showing an attempt to break a lock according to the present invention using a key having only the other of the features of the blade of the present invention. I have.

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Claims (18)

[Claims] 1. A cylinder lock having a plurality of pin tumbler receiving chambers and an inner surface defining a core receiving chamber having an axis, the pin tumbler receiving chamber extending to the inner surface. A shell, mounted in a fixed orientation in an environment in which the lock is used, a rotatable shell that cooperates with the shell to form a relatively movable component of the lock; A core, having an outer surface, disposed longitudinally within the core receiving chamber of the shell so as to be rotatable about an axis of the chamber, and having a longitudinally extending side having opposing sides; Defining a keyway and having a plurality of pin tumbler receiving chambers, the pin tumbler receiving chamber being alignable with the pin tumbler receiving chamber of the shell and extending between the keyway and the outer surface of the core; By Communication is established between the shell and the pin tumbler receiving chamber of the core, wherein a shear line for the lock is provided at an interface between the inner surface of the shell and the outer surface of the core. And a pin tumbler arranged to reciprocate in the pin tumbler receiving chamber, each of which has at least a bottom pin and a drive pin, wherein the pins are axially Side-by-side and aligned when at least one of the pins of each of the pin tumblers extends across the shear line and there is no properly keyed key in the keyway The shell pin tumbler receiving chamber and the core pin tumbler receiving chamber are partially disposed in the chamber, and further, each of the pins is arranged elastically in the direction of the core in each of the chambers. A pin tumbler including a first spring for biasing the key, and a key having at least one first auxiliary locking means and having a first contoured configuration cooperating with the first auxiliary locking means. Auxiliary locking means for achieving a mechanical connection that prevents rotation between the shell and the core when not present in the keyway,
A first auxiliary locking means partially carried by the core and movable relative to the core and connected to a first side of the keyway; a key lacking a second contour configuration Capture means for mechanically capturing in the keyway, the capture means being carried by and movable relative to the core, opposite the shear line and a first side of the keyway. A keyed portion extending between the keyway and a second side of the keyway disposed on a side of the keyway, the keyed portion having an operating portion at least partially aligned with the auxiliary locking means. And a catching means cooperating with the shell, wherein the movement of the first auxiliary locking means induced by the first contour configuration of the key causes the movement of the first auxiliary locking means to detach the core from the shell so that the core relative to the shell can be removed. The key is moved to a position where the capturing means does not perform capturing by the second contour configuration of the key. Cylinder lock the core portion is to be rotated in the unlocking direction. 2. The cylinder lock according to claim 1, wherein said first auxiliary locking means is provided in said core, and between said first side of said key groove and an outer surface of said core. A locking pin receiving chamber having an axis extending therethrough, wherein said locking pin receiving chamber is on an inner surface of said shell and is aligned with an axis of said locking pin receiving chamber when said cylinder lock is in a locked state; A depression pin at least partially defined by a wall envisioned to define a cam surface coupled to the surface; and a locking pin disposed within said core locking pin receiving chamber for reciprocating movement. Having a first end engraved to achieve the anti-rotation coupling in cooperation with the shell recess, wherein the first end of the locking pin is at least partially in the shell recess. Defining a cam follower cooperating with the defined cam surface, thereby providing a support for the shell; A locking pin adapted to be applied in the direction of the keyway by rotation of the core, wherein a second end disposed opposite the first end of the locking pin. Wherein the second end is configured in a shape within the key blade and has a predetermined shape to cooperate with a recess defining a first contour configuration of the key, whereby: By rotating the core relative to the shell with the key in the keyway, the second end of the locking pin will move to a recess configured in the key blade, A locking pin wherein a first end of the locking pin is adapted to be withdrawn from the recess of the shell; and applying an elastic biasing force to the locking pin, the first end of the locking pin being Pressing from the keyway to the inner surface of the shell, the locking pin normally traverses the shear line and the depression in the shell. A second spring adapted to extend only into the cylinder lock. 3. The cylinder lock of claim 1, wherein said catching means is a generally arcuate cutout within said core and extends along an arcuate portion of the outer surface of said core. A cutout at a longitudinal location of and offset from one of the pin tumbler receiving chambers of the core, blocking the lateral extension of the keyway on the second side; A plate that loosely fits within a portion, wherein the plate does not substantially interrupt the shear line during rotation of the core with respect to the shell; a first non-capturing position; and at least a portion of the plate. Is displaced from the periphery of the core so that a drive pin disposed in the pin tumbler chamber of the shell cooperating with one of the pin tumbler chambers of the core can move across the shear line. With the second capture position The movable relative to the core portion, a cylinder lock in which a part that matches the extension of the lateral direction of the key groove and a plate that is included in the working portion of said capture means at. 4. The cylinder lock according to claim 3, wherein said first auxiliary locking means is provided in said core portion, and is provided between a first side of said key groove and an outer surface of said core portion. Extend,
A locking pin receiving chamber having an axis aligned with the lateral extension of the keyway; and an inner surface of the shell aligned with the axis of the locking pin receiving chamber when the cylinder lock is locked. A recess at least partially defined by a wall imagined to define a cam surface coupled to the inner surface of the shell; and a lock disposed within the core locking pin receiving chamber for reciprocating motion. A locking pin having a first end designed to cooperate with the recess of the shell to achieve the anti-rotational connection, wherein the first end of the locking pin is at least partially A lock defining a cam follower cooperating with a cam surface defined in the shell recess, whereby rotation of the core relative to the shell can exert a force in the direction of the keyway. Pin to the first end of the locking pin And a second end disposed on the opposite side of the key blade, the second end being configured in a shape within the key blade and pre-operated to cooperate with a recess defining a first contour configuration of the key. Having a defined shape, whereby the second end of the locking pin is brought into contact with the key blade by rotating the core relative to the shell with the key in the keyway. A locking pin adapted to move into the configured recess, wherein the first end of the locking pin is withdrawn from the shell recess, and applying an elastic biasing force to the locking pin; A second push of the first end of the locking pin from the keyway to the inner surface of the shell so that the locking pin normally extends across the shear line and into the recess of the shell. A cylinder lock including a spring and 5. The cylinder lock of claim 1, wherein the keyway defined in the core defines a plane, and the first auxiliary locking means is substantially transverse to the plane. A cylinder lock operable along an oriented axis, the actuation portion of said catching means being located on said transverse axis. 6. The cylinder lock according to claim 5, wherein said first auxiliary locking means includes an axis and a first end extending into said key groove when said cylinder lock is unlocked. An actuating portion of the capture means includes a projection for cooperating with a cam projection on a key blade, wherein the first end of the locking pin is shaped into a cam projection on the key blade. A cylinder lock having a shape such that it can be received within a recess of a key blade that is generally complementary in the above. 7. The cylinder lock of claim 5, wherein said catching means is a generally arcuate cutout within said core and extends along an arcuate portion of the outer surface of said core. A lateral position on and offset from a longitudinal position of one of the pin tumbler receiving chambers of the core, the second side of the keyway at least partially located on the lateral axis. A plate that loosely fits into the cutout, wherein the plate does not substantially interrupt the shear line during rotation of the core relative to the shell. A non-capturing position and a drive pin disposed in the pin tumbler chamber of the shell wherein at least a portion of the plate is displaced from around the core thereby cooperating with one of the pin tumbler chambers of the core. Beside the shear line The actuating portion of the catching means includes a portion movable with respect to the core portion between the second catching position and the keying portion, the portion being aligned with the lateral extension of the keyway. Cylinder lock containing a plate and 8. The cylinder lock according to claim 5, wherein said first auxiliary locking means is provided in said core, and between said first side of said keyway and an outer surface of said core. A locking pin receiving chamber extending to define the transverse axis, wherein the locking pin receiving chamber is on an inner surface of the shell and is aligned with the axis of the locking pin receiving chamber when the cylinder lock is in a locked state; A recess at least partially defined by a wall envisioned to define a cam surface coupled to the inner surface of the shell; and a locking pin disposed in the core locking pin receiving chamber for reciprocating movement. A first end designed to cooperate with a recess in the shell to achieve the anti-rotational connection, wherein a first end of the locking pin is at least partially at the shell. A cam follower cooperating with a cam surface defined in the recess of A locking pin adapted to be biased in the direction of the keyway by rotation of the core relative to a shell, wherein a second pin is disposed opposite the first end of the locking pin. An end, the second end being configured in a shape in the key blade and having a predetermined shape to cooperate with a recess defining a first contour configuration of the key, The rotation of the core relative to the shell with the key in the keyway moves the second end of the locking pin to a recess configured in the key blade, A locking pin wherein a first end of the locking pin is adapted to be withdrawn from the recess of the shell; and applying an elastic biasing force to the locking pin, wherein the first end of the locking pin is Pushing from the keyway to the inside surface of the shell, the auxiliary locking pin normally crosses the shear line. A second spring adapted to extend into the recess of the shell. 9. The cylinder lock according to claim 1, wherein said first auxiliary locking means is provided in said core, and between said first side of said keyway and an outer surface of said core. A locking pin receiving chamber extending on the inner surface of the shell, the cam surface aligned with the locking pin receiving chamber when the cylinder lock is in a locked state and coupled to the inner surface of the shell. A recess at least partially defined by a wall envisioned to define, and a locking pin disposed within the core locking pin receiving chamber for reciprocating motion, the locking pin cooperating with the shell recess. A first end of the locking pin, the first end of the locking pin having a cam surface defined at least partially in the recess of the shell. Defining a cooperating cam follower, whereby rotation of the core relative to the shell A locking pin adapted to be capable of exerting a force in the direction of the keyway, having a second end disposed opposite to the first end of the locking pin; A second end is configured in a shape within the key blade and has a predetermined shape to cooperate with a recess defining the first contour configuration, whereby the key is located in the keyway. When the core rotates with respect to the shell in a certain state, the second end of the locking pin moves to a depression formed in the key blade, and the first pin of the locking pin moves. A locking pin having an end adapted to be withdrawn from the recess of the shell; and applying an elastic biasing force to the locking pin to move the first end of the locking pin from the keyway inside the shell. Pressing onto the surface such that the auxiliary locking pin normally extends across the shear line and into the shell recess A second spring, and a cylinder lock comprising: 10. A cylinder lock system, comprising: a plurality of pin tumbler receiving chambers; and an inner surface defining a core receiving chamber, wherein the pin tumbler receiving chamber extends to the inner surface. A shell mounted in a fixed orientation in the environment of use of the lock, and a core cooperating with the shell to form a relatively movable component of the lock of the system. A plurality of pin tumblers defining a longitudinally extending keyway having oppositely disposed sides disposed in the core receiving chamber of the shell for rotation about an axis; Further defining a receiving chamber, the pin tumbler receiving chamber is alignable with the pin tumbler receiving chamber of the shell and extends between the keyway and an outer surface of the core, thereby providing a pinter for the shell and core. Communication is established between the bra receiving chambers and a shear line for the lock of the system is defined at an interface between the inner surface of the shell and the outer surface of the core. And a pin tumbler arranged to reciprocate in the pin tumbler receiving chamber, each of which has at least a bottom pin and a drive pin, each of which is axially aligned and adjacent to each other, The shell pin tumbler receiving chamber and core aligned with at least one of the pins of each of the pin tumblers extending across the shear line and aligned in the absence of a properly keyed key in the keyway A first portion for resiliently biasing the aligned pins in the direction of the core in each of the pin tumbler receiving chambers. A pin tumbler containing a spring and at least one first auxiliary locking means, wherein a key having a first contoured configuration cooperating with the first auxiliary locking means is present in the keyway. Auxiliary locking means to achieve a mechanical connection that prevents rotation between the shell and the core when not,
A first auxiliary locking means carried by the core portion and movable with respect to the core portion and connected to a first side of the key groove; Capture means for mechanically capturing in the groove, carried by and movable relative to the core, disposed on the opposite side of the shear line and the first side of the keyway. An operating portion extending between the keyed groove and a second side of the keyway, the operating portion of the catching means being at least partially aligned with the first auxiliary locking means. Capture means cooperating with the contour configuration of the key, wherein the movement of the first auxiliary locking means removes the core from the shell to permit rotation of the core with respect to the shell, By moving to a position where the capturing means does not perform capturing by the second contour configuration, the core is turned to the unlocking direction. A cylinder lock system adapted to be rollable, comprising a key; a bow; and a blade extending longitudinally from said bow and terminating at a blade tip, wherein said first and second are spatially displaced. A blade having a pair of opposed side surfaces and an edge interconnecting the side surfaces, wherein the first and second side surfaces are at least partially substantially parallel to each other; At least one first three-dimensional projection extending outwardly from one of the side faces of the blade, defining the second contour configuration, and the projection of the projection facing in the direction of the blade tip; A side defining a sloped surface extending to a maximum height of the protrusion, whereby a protrusion capable of functioning as a cam in response to a longitudinal movement of the blade; and a second one of the side surfaces of the blade. In the depression in the second one , A cylinder lock system comprising: a key comprising a recess and to KakuJo the first contour configuration in alignment with the projection. 11. The cylinder lock system of claim 10, wherein the keyway defines a plane.
A cylinder locking system, wherein the first auxiliary locking means is operable along an axis oriented generally transversely to the plane, and the actuating portion of the catching means is located on the transverse axis. . 12. The cylinder lock system according to claim 11, wherein said catching means is an arcuate cutout within said core and extends along an arcuate portion of the outer surface of said core. A cutout at a longitudinal location of and offset from one of the pin tumbler receiving chambers of the core, blocking the lateral extension of the keyway on the second side; A plate that loosely fits within a portion, wherein the plate does not substantially interrupt the shear line during rotation of the core with respect to the shell; a first non-capturing position; and at least a portion of the plate. Is displaced from the periphery of the core so that a drive pin disposed in the pin tumbler chamber of the shell cooperating with one of the pin tumbler chambers of the core can move across the shear line. Second key A plate movable with respect to the core portion between a capture position and a plate included in an actuation portion of the capture means, the extension portion cooperating with a projection of the key blade. . 13. The cylinder lock system according to claim 12, wherein said first auxiliary locking means is in said core and between a first side of said keyway and an outer surface of said core. A cam located on the inner surface of the shell and aligned with the axis of the lock pin receiving chamber when the cylinder lock is in a locked state and coupled to the inner surface of the shell. A depression, at least partially defined by a wall engraved to define a surface, and a locking pin disposed in said core locking pin receiving chamber for reciprocating movement, said depression in said shell. A cam having a first end engraved to achieve said rotation-inhibiting connection in cooperation with said first end of said locking pin at least partially defined in said shell recess Defining a cam follower cooperating with the surface, whereby the A locking pin adapted to exert a force in the direction of the keyway by rotation of the core, having a second end disposed opposite the first end of the locking pin. The second end has a predetermined shape to cooperate with the depression of the key blade, whereby the core with respect to the shell with the key in the keyway. Rotation causes the second end of the locking pin to move into the key blade recess and the first end of the locking pin to be withdrawn from the shell recess. Applying an elastic biasing force to the locking pin and pushing the first end of the locking pin from the keyway to the inner surface of the shell so that the auxiliary locking pin normally has the shear line. A second spring extending across the shell and into the depression of the shell. Lock system. 14. The cylinder lock system of claim 13, wherein the depression of the key blade is generally complementary in shape to the protrusion of the key blade. 15. A cylinder lock, wherein a rotatable core defines a keyway having a cross-sectional profile when viewed in a direction transverse to the axis of rotation of the core and corresponds to the keyway. A core having a cutout, a plate having a cam follower extending movably into the cutout and having a cam follower between its ends, and a shell in which the core rotates internally. A shell having an inner diameter and a bottom of the keyway extending to the shell so that a first edge of the blade can contact the inner diameter of the shell during rotation of the lock core; A second end configured in a shape having a first end contacting the inner diameter of the shell and extending through the core to the keyway, and having a second end configured in the shape; A seat further comprising an auxiliary locking pin elastically biased in a direction in which the configured second end is pulled out from the keyway. A key blank used to make a key for use with a tablet lock, the first and second substantially parallel opposed surfaces defining first and second plates, respectively. A key blank formed from a flat piece of metal having a bow, a blade extending from the bow, and a pair of opposedly disposed interconnecting first and second sides and the side. Having spaced edges, wherein the distance between the opposed edges is much greater than the distance between the side surfaces, and wherein the first and second sides are dimensioned to the contour of the keyway. And having a longitudinally extending irregularity defining a generally complementary blade cross-section in shape, wherein the shape of the first and second sides machine both parallel surfaces of the flat piece of metal. A blade obtained by processing, and a first one of the surfaces At least one three-dimensional cam projection extending outwardly from the first side beyond the surface of the cam projection facing the tip of the blade extending into the keyway of the lock. Engaging the cam follower of the plate so that longitudinal movement of the blade in the keyway makes contact between the cam protrusion and the cam follower and drives the cam protrusion away from the keyway. A cam projection configured in such a size and shape as to give movement to the plate, and into a three-dimensional depression in the second side of the blade, to the first side of the blade A generally extending, at least partially aligned with the cam projection, and a recess configured and sized to receive a shaped second end of the auxiliary locking pin. Key blank to include. 16. The key blank of claim 15, wherein said recess is complementary in shape to said projection. 17. The key blank of claim 15, wherein the protrusions and depressions define an axis and are coaxial. 18. The key blank of claim 16, wherein said protrusions and depressions define an axis and are coaxial.