Locking pin assemblies and uses thereof

Abstract

The disclosure relates to improved cylinder lock, key and their combination. More specifically, the disclosure relates to a locking pin assembly operable to provide added combination and increase security against burglary, such as by key bumping, a cylinder lock incorporating a second locking pin assembly, configured to engage a key blade from an opposite direction of column-located driver pins.

Description

Docket No. 35004PCLOCKING PIN ASSEMBLIES AND USES THEREOFCROSS REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to U.S. Provisional Patent Application No. 63 / 718,687, filed on November 10, 2024 and Israel Patent Application No. 319554, filed on March 11, 2025. The disclosures of each of these applications are incorporated herein by reference in their entirety.BACKGROUND

[0002] Disclosure is directed in general to an improved cylinder lock. More specifically, the disclosure is directed to a locking pin assembly operable to increase security.

[0003] Cylinder locks typically include a cylinder casing and a barrel rotatable in the casing. A plurality of barrel pins typically sit in the barrel and a plurality of pins are spring biased in registration therewith in the cylinder casing. When an appropriate key is inserted in the lock, the barrel pins are urged into height alignment inside the barrel and the casing pins are urged against the springs into a column portion extending radially from the casing, such that the shear line is not blocked (by any pin(s)) and the barrel can be turned inside the cylinder casing to lock or unlock the lock.

[0004] Locks to an entry must, in addition to allowing authorized individuals to enter, have specific key profiles that prevent unauthorized key duplication, either by an unauthorized entrant or an unauthorized professional assembling the duplicate key. Additionally, a variety of top-secret circumstances may require keys with more combinations that are difficult to duplicate in order to avoid unauthorized entry.

[0005] This key typically has flared punchings, or depressions, which, following insertion of the key in the lock’s key way, abut against control heads of pins housed in the lock. The depth and position of the punchings constitute the cuts of the key that corresponds to the position of barrel pins adapted to allow the rotation of the barrel. In fact, when the key corresponding to the lock is inserted into the key way and the barrel pins abut in their respective punching, the opposite ends of the barrel pins align on the sliding surface between the barrel and cylindrical housing, allowing the rotation of the barrel itself.

[0006] One known method of opening this type of lock is called "key bumping", which consists in preparing a "bumping key" provided with punchings having the maximum depth obtainable in the thickness of the key itself. The bumping key can be inserted in the key way of the lock at a length greater than the control key. In general, the bumping key is made starting from a blank or untreated key, adapted to create a duplicate of the control key of the lock, providing thereon maximum-depthDocket No. 35004PC punchings (depressions, e.g.), and filing the typical stop abutments of the control key. By inserting the bumping key in the key way, all the barrel pins arrange at their maximum height. By hitting the key to push it further into the key way, the pistons are subjected to an impact in a radial direction, making the rotation of the rotor possible.

[0007] The disclosure provided herein addresses these issues.SUMMARY

[0008] Provided herein are exemplary implementations of an improved cylinder lock. More specifically, provided, are exemplary implementation of a locking pin assembly operable to increase security against burglary, such as by key bumping.

[0009] In an exemplary implementation, provided herein is a key comprising a key blade for use with a cylinder lock, having at least one planar surface defining a longitudinal axis, the key blade further defining at least one concave depression with a plurality of grooves defining longitudinal axes, the plurality of grooves adapted, sized and configured to reversibly engage at least a portion of a complementary surface of a locking pin; and an elongated engagement area.

[0010] In another exemplary implementation, provided herein is a cylinder lock comprising: a rotatable barrel defining an external surface, having a proximal end and a distal end with an axial key way and a plurality of barrel bores extending radially in one direction from, and in communication with the keyway, and at least one barrel bore extending radially in a diametrically opposed direction to the column bores in communication with the axial keyway, the barrel being selectably, rotateably movable within a cylindrical housing portion; the cylindrical housing portion having a column portion with a plurality of column bores in registration with the plurality of barrel bores, extending radially from the cylindrical housing portion, wherein the cylindrical housing further comprises at least one housing bore diametrically opposed to the column bore, the barrel bore being in registration with the at least one barrel bore extending radially in a diametrically opposed direction to the column bores; a first locking pin assembly, comprising at least one column pin disposed within a column bore, and at least one apical barrel pin disposed with the registered barrel bore; and a second locking pin assembly comprising a cylindrical housing pin sub assembly disposed within the at least one housing bore diametrically opposed to the column bore, and at least one basal barrel pin, disposed within the at least one barrel bore extending radially in a diametrically opposed direction to the column bores.

[0011] In yet another exemplary implementation, provided herein is a method of preventing an unauthorized entry to an enclosed space having an opening with a door having the cylinder lock therein by key bumping, the cylinder lock configured to transition between a locked position preventing entryDocket No. 35004PC to the enclosed space, and an open position allowing entry to the enclosed space, the method comprises: providing a door wherein the cylinder lock comprises: a rotatable barrel defining an external surface, having a proximal end and a distal end with an axial key way and a plurality of barrel bores extending radially in one direction from, and in communication with the keyway, and at least one barrel bore extending radially in a diametrically opposed direction to the column bores in communication with the axial key way, the barrel being selectably, rotateably movable within a cylindrical housing portion; the cylindrical housing portion having a column portion with a plurality of column bores in registration with the plurality of barrel bores, extending radially from the cylindrical housing portion, wherein the cylindrical housing further comprises at least one housing bore diametrically opposed to the column bore, the barrel bore being in registration with the at least one barrel bore extending radially in a diametrically opposed direction to the column bores; a first locking pin assembly, comprising at least one column pin disposed within a column bore, and at least one apical barrel pin disposed with the registered barrel bore; and a second locking pin assembly comprising a cylindrical housing pin sub assembly disposed within the at least one housing bore diametrically opposed to the column bore, and at least one basal barrel pin, disposed within the at least one barrel bore extending radially in a diametrically opposed direction to the column bores, and wherein the second locking pin assembly is configured to engage at least one groove in at least one concave depression with a plurality of grooves defining longitudinal axes, the groves defined in a key blade having at least one planar surface defining a longitudinal axis and an elongated engagement area, whereby the cylindrical housing pin sub assembly comprises: a stopper coupled to an external surface of the at least one housing bore defined in the cylindrical housing; a biasing element abutting the stopper; a housing plug having an apical surface and a basal surface, the housing plug disposed within the at least one housing bore defined in the cylindrical housing, wherein the basal surface of the housing plug being biased away from the stopper by the biasing element; and the basal locking pin, having a basal surface and an apical surface, wherein the apical surface of the housing plug is configured to abut the basal surface of the basal locking pin, while the apical surface of the basal locking pin is configured to engage at least one groove in the at least one concave depression with the plurality of grooves.

[0012] In an exemplary implementation, provided herein is a key comprising an angularly bitted key blade for use with a cylinder lock having a plurality of locking pins, the key having two planar surfaces defining a longitudinal axis, wherein one planar surface further defining at least one concave depression with a plurality of grooves defining longitudinal axes, the plurality of grooves adapted, sized and configured to reversibly engage at least a portion of a complementary surface of a barrel locking pin disposed perpendicular to the plurality of locking pins.Docket No. 35004PC

[0013] In another exemplary implementation, provided herein is a cylinder lock comprising: a rotatable barrel defining an external surface, having a proximal end and a distal end with an axial keyway and a plurality of aligned bores extending radially in one direction from, and in communication with the keyway, and at least one barrel bore extending radially perpendicular to the aligned bores in communication with the axial keyway, the barrel being selectably, rotateably movable within a cylindrical housing portion; the cylindrical housing portion having a column portion with a plurality of column bores in registration with the plurality of aligned bores in the barrel, extending radially from the cylindrical housing portion, wherein the cylindrical housing further comprises at least one aperture diametrically perpendicular to the column bores, the barrel bore being in registration with the aperture; a first locking pin assembly, comprising at least one column pin disposed within a column bore, and at least one apical barrel pin disposed with a corresponding barrel bore; and an eccentric locking pin disposed partially within the at least one aperture perpendicular to the column bore, extending into the registered barrel bore disposed perpendicular to the aligned barrel bores.BRIEF DESCRIPTION OF THE DRAWINGS

[0014] For a better understanding of the improved cylinder locks and keys described herein and their use in a cylinder lock, with regard to the exemplary implementations thereof, reference is made to the accompanying drawings, in which like numerals designate corresponding elements or sections throughout and in which:

[0015] FIGs. 1A illustrates an exemplary implementation of the key and key blade, with FIG. IB being an enlargement of the key blade illustrated in FIG. 1A, and FIG. 1C, illustrating another exemplary implementation of the concave depression;

[0016] FIGs. 2A, illustrates an isometric view of an exemplary implementation of the cylinder lock described, with transparent cylindrical housing, with FIG. 2B, illustrating X-Z cross section of the cylinder lock illustrated in FIG. 2A;

[0017] FIGs. 3 A, illustrates an isometric view of a key blank with the concave depression and the second locking pin assembly, with FIG. 3B illustrating an exploded view of the second locking pin assembly;

[0018] FIGs. 4A illustrates an isometric view of the barrel accommodation of a another exemplary implementation of the second locking pin assembly, with a the key illustrated in FIG. 1 A inserted in the barrel key way, with FIG. 4B, illustrating another exemplary implementation of the cylindrical housing pin sub assembly, while FIG. 4C, illustrating a Z-Y cross section of FIG. 4A at theDocket No. 35004PC location of the cylindrical housing pin sub assembly along line C-C, and FIG 4D, illustrating a bottom isometric view of the key blade of FIG. 1 A with the cylindrical housing pin sub assembly disengaged;

[0019] FIG. 5 A is an isometric view of an exemplary implementation of the cylindrical housing pin sub assembly, with FIG. 5B being an exploded view thereof;

[0020] FIGs 6A illustrates an exemplary implementations of the cylindrical housing pin sub assembly showing configuration of interface surface, with FIG. 6B showing another interface surface, and FIG. 6C, showing a complete annex sleeve, without guide rail;

[0021] FIG. 7A illustrating yet another exemplary implementation of the cylindrical housing pin sub assembly, with FIG. 7B illustrating an exploded view of the locking pin sub assembly illustrated in FIG. 7A; and FIG. 7C, being a Y-Z cross section of the exemplary implementation illustrated in FIG. 7A in combination with the key and the cylinder;

[0022] FIG 8A, illustrating another exemplary implementation of the cylindrical housing pin sub assembly, with FIG. 8B illustrating an exploded view of the locking pin sub assembly illustrated in FIG. 8 A, and FIG. 8C, being a Y-Z cross section of the exemplary implementation illustrated in FIG. 8A in combination with the key and the cylinder;

[0023] FIG. 9A illustrates a Y-Z cross section of an exemplary implementation of an angularly bitted key blade and the cylinder with a passive eccentric barrel pin, with FIG. 9B illustrating the distal end of the angularly bitted key blade from the right side, while FIG. 9C, illustrating the angularly bitted key blade of FIG. 9B from the left side, showing the concave depression on one side only, and FIG. 9D being an enlargement of FIG. 9A at a different angle, as well as FIG. 9E, illustrating another exemplary implementation of the concave depression;

[0024] FIG. 10A, and 10B illustrate the angularly bitted key blade from both sides, with FIG. 10C showing the interface between a passive eccentric barrel pin and the concave depression;

[0025] FIG. 11, illustrates an isometric view of the barrel configured to accommodate the angularly bitted key blade illustrated in FIGs 9A-10B;

[0026] FIG. 12A illustrates a Y-Z cross section of an exemplary implementation of an angularly bitted key blade and the cylinder with a passive eccentric barrel pin at the concave depression showing the barrel pin portion of the column pin and its interaction with the cutting bed, with FIG. 12B showing the same with all pins and no barrel;

[0027] FIG. 13 A, illustrates a first exemplary implementation of an active locking pin assembly for the angularly bitted key blade with the concave depression, with FIG. 13B being an exploded view thereof and FIG. 13C illustrating the angularly bitted key blade in the barrel illustrated in FIG. 11,Docket No. 35004PC including the first exemplary implementation of the active locking pin assembly for the angularly bitted key blade and the column pins assembly;

[0028] FIG. 14, illustrating an exploded view of a second exemplary implementation of an active locking pin assembly for the angularly bitted key blade; and

[0029] FIG. 15 illustrates a cylinder lock housing accommodating for example, the barrel illustrated in FIG. 11.DETAILED DESCRIPTION

[0030] Provided herein are exemplary implementations of a locking pin assembly described herein and their use in a cylinder lock, and in methods for preventing, or inhibiting unauthorized opening using key bumping.

[0031] The term “coupled”, including its various forms such as ’’operably coupling”, "coupling" or "couplable", refers to and comprises any direct or indirect, structural coupling, connection or attachment, or adaptation or capability for such a direct or indirect structural or operational coupling, connection or attachment, including integrally formed components and components which are coupled via or through another component or by the forming process. Indirect coupling may involve coupling through an intermediary member or adhesive, or abutting and otherwise resting against, whether frictionally or by separate means without any physical connection.

[0032] In addition, the term “slidably” or “slidably coupled” refers to movement of one surface (for example the latching assembly) over a second surface (for example, the housing) while maintaining smooth continuous contact between the two surfaces. In another exemplary implementation, the term "slidably coupled" means a state in which two or more components are coupled to one another such that at least one of the components (e.g., the nested column pin assembly) at least slides with respect to another component (e.g., column bores). Likewise; the terms "slide," "slid" or "sliding" are defined as moving, gliding or passing along or through a surface, although continuous contact at each point along the path is not necessarily required.

[0033] The term “engage” and various forms thereof, when used, refer to the application of any forces that tend to hold the engaged components together against inadvertent or undesired separating forces (e.g., such as may be introduced during use of the lock). It is to be understood, however, that engagement does not in all cases require an interlocking connection that is maintained against every conceivable type or magnitude of separating force.Docket No. 35004PC

[0034] The term "abut", or “abuts” should not be understood to strictly mean that the respective parts must be touching. Rather, "abuts" means that any remaining space between an abutting portion will not cancel or nullify the intended operation of the abutting components.

[0035] In the context of the disclosure, the term "operable" means the system and / or the device and / or the program, or a certain element or step is fully functional, sized, adapted and calibrated, comprises elements for, and meets applicable operability requirements to perform a recited function when activated, coupled, implemented, actuated, effected, or implemented.

[0036] In the context of the disclosure, “biaser”, interchangeable with "biasing element" means any device that provides a biasing force. Representative biasing elements include but are not limited to springs (e.g., elastomeric or metal springs, torsion springs, coil springs, leaf springs, tension springs, compression springs, extension springs, spiral springs, volute springs, flat springs, and the like), detents (e.g., spring-loaded detent balls, cones, wedges, cylinders, and the like), pneumatic devices, hydraulic devices, magnets, and the like, and combinations thereof. Likewise, "biasing member" as used herein refers to one or more members that applies an urging force between two elements.

[0037] In the context of the disclosure, the term “bitting” refers to the physical arrangement of the cuts on a key that engage with the locking mechanism. It is typically expressed as a series of integers, which instructs a locksmith on how to cut a key to replace a lost one or make an additional copy. Each digit in the bitting corresponds to a specific bitting position on the key blank where a cut or notch is to be made and indicates the necessary depth of the cut. The term “bitting position” is intended to mean a depth of a key cut in a bitting sequence of a key. Angular bitting, refers to angled cuts on the key, designed to lift each tumbler (locking pin) to a predetermined height and rotate it to a specific angle.

[0038] In addition, for the purposes of the present disclosure, directional or positional terms such as “top”, “bottom”, “basal”, “upper,” “apical”, “lower,” “side,” “front,” “frontal,” “forward,” “rear,” “rearward,” “back,” “trailing,” “above,” “below,” “left,” “right,” “radial,” “vertical,” “upward,” “downward,” “outer,” “inner,” “exterior,” “interior,” “intermediate,” etc., are merely used for convenience in describing the various implementations of the present disclosure.

[0039] In the context of the disclosure, the term “accommodate” refers to the ability of an accommodating element (e.g., interrupted sleeve 61) to allow passage or retention of another element (e.g., rod 70) at close tolerance, without substantial space for other elements or components.Furthermore, as used herein, the term “accommodate” need only mean that at least a portion of something is inside the interior space of the accommodating element, and there is not necessarily a requirement for all portions to be inside the interior space of the accommodating element.Docket No. 35004PC

[0040] A more complete understanding of the components, and devices disclosed herein can be obtained by reference to the accompanying drawings. These figures (also referred to herein as “FIG.”) are merely schematic representations based on convenience and the ease of demonstrating the present disclosure, and are, therefore, not intended to indicate relative size and dimensions of the devices or components thereof, their relative size relationship and / or to define or limit the scope of the exemplary implementations. Although specific terms are used in the following description for the sake of clarity, these terms are intended to refer only to the particular structure of the exemplary implementations selected for illustration in the drawings, and are not intended to define or limit the scope of the disclosure. In the drawings and the following description below, it is to be understood that like numeric designations refer to components of like function. Likewise, cross sections are referred to on normal orthogonal coordinate system having XYZ axis, such that Y axis refers to front-to-back, X axis refers to side-to-side, and Z axis refers to up-and-down.

[0041] Turning now to FIG.s 1 A-3B, illustrating exemplary implementation of keys and key blade described. As illustrated, provided is key 100 comprising key blade 200 for use with cylinder lock 4 (see e.g., FIG. 2A), having at least one planar surface 201 defining longitudinal axis XL200. Key blade 200 further defining at least one concave depression 11 with plurality of grooves 1 la- 1 Id, each defining parallel longitudinal axes XLm, plurality of grooves adapted, sized and configured to reversibly engage at least portion of complementary surface of locking pin (see e.g., 53, FIG. 3A); and elongated engagement area 21a. Additionally or alternatively, key blade 200 can further comprise a plurality of non-grooved dimples HOi (see e.g., FIG. 1C), which may be overlapping or separate. Also contemplated are configurations where concave depression is comprised of a plurality of concave channels e.g., 1 l’a, 1 l ’c, 1 l’e etched separately into key blade 200.

[0042] As further illustrated, longitudinal axis XLm defined by the grooves 1 la-1 le and the longitudinal axis XL200 defined by the elongated engagement area 21a form a predefined angle of between about 150and 165 °. Furthermore and in another exemplary implementation, the depth of each groove l la - l le in the plurality of grooves 1 li is the same or different depth, as would be determined during assembly.

[0043] Also illustrated in FIG. 1 A, is Key head 300 having proximal end 305 with surfaces 301 and 302. Key blade 200 having distal end 205 with beveled edges 204, and 203 and side surfaces 202. As illustrated planar surface 201 is a mirror image of surfaces 206 (upper and lower).

[0044] Turning now to FIG.s 2A-6, illustrating in FIG. 2A cylinder lock 4 comprising: rotatable barrel 400 defining external surface 413, having proximal end 411 and distal end 410 with axial key way 4100 and plurality of barrel bores 412a extending radially in one direction from, and inDocket No. 35004PC communication with keyway 4100, and at least one barrel bore 422 (see e.g., FIG. 2B) extending radially in diametrically opposed direction to column bores 401a in communication with axial key way 4100, barrel 410 being selectably, rotateably movable within cylindrical housing 500 portion 502; cylindrical housing 500 having column portion 501 with plurality of column bores 401a in registration with plurality of barrel bores 412a (412b in the distal part of cylinder lock 4) where column bores 401a accommodate plurality of driver pins , extending radially from cylindrical housing portion 502, wherein cylindrical housing further comprises at least one housing bore 424 diametrically opposed to column bore, barrel bore 422 being in registration with at least one hosing bore 424 extending radially in diametrically opposed direction to column bores 401a. Further illustrated is first locking pin assembly, comprising at least one column pin 404a disposed within column bore 401a, and at least one apical barrel pin 406a disposed with registered barrel bore 412a; and second locking pin assembly comprising cylindrical housing pin sub assembly disposed within at least one housing bore 424 diametrically opposed to column bore 401a, and at least one basal barrel pin 53, disposed within at least one barrel bore 422 extending radially in diametrically opposed direction to the column bores 401a.

[0045] As illustrated in FIG.s 2A, and 2B, cylinder lock 4 comprises two identical mirrored portions of barrels where components are identically marked with the designation ‘b’ to any element number. As illustrated in FIG. 2B, cylinder lock 4 further comprises cam 601 with tab 602, configured to rotate upon turning of the barrel in cylindrical housing portion 502.

[0046] In an exemplary implementation and as illustrated in FIG.s 2A-3B, second locking pin assembly is configured to engage at least one groove 1 la-1 le in at least one concave depression 11 with a plurality of grooves Hi defining longitudinal axes XL in, the groves 1 la-1 le defined in key blade 200 having at least one planar surface 201 (206) defining a longitudinal axis XL200 and an elongated engagement area 21a. It is noted, that although grooves 1 li are illustrated in a concave depression 11, in certain exemplary implementations, the grooves can be formed at any location along key blade 200, with the angle relative to longitudinal axis XL200 being anywhere between 00and 89 °, with length which can depend on the angle. Additionally, the grooves do not necessarily need to be concave, but can also have a single constant depth relative to key blade 200 surface 201.

[0047] As further illustrated in FIG. 3B e.g., the second locking pin assembly 50 comprises: the cylindrical housing 500 pin sub assembly comprising: stopper 51 coupled to external surface 5020, of at least one housing bore 424 defined in cylindrical housing portion 502; biasing element 55 abutting stopper 51, with housing plug 52 having apical surface 520 and basal surface 521, housing plug 52 disposed within at least one housing bore 422 defined in cylindrical housing 500 in portion 502,Docket No. 35004PC wherein basal surface 521 of housing plug 52 being biased away from stopper 51 by biasing element 55; and basal locking pin 53, having basal surface 531 and apical surface 530, wherein apical surface 520 of housing plug 52 is configured to abut basal surface 531 of basal locking pin 53 and wherein upon insertion of an authorized key blade, the interface created by apical surface 520 of housing plug 52 and basal surface 531 of basal locking pin 53 are co-planar with shear line 4000 defined between cylinder housing portion 502 and outer surface 413 of barrel 410. As further illustrated, apical surface 530 of the basal locking pin 53 is configured to engage at least one groove 1 la-1 le in at least one concave depression 11 with the plurality of grooves Hi.

[0048] It is noted that while housing bore 424 and at least one barrel bore 422 extending radially in a diametrically opposed direction to barrel bores 412a in registration with plurality of corresponding column bores 401a, are in registration, they are out of registration with plurality of corresponding column bores 401a (see e.g., FIG. 2B).

[0049] Turning now to FIG.s 2A, 2B, and 4A-6, illustrating another exemplary implementation, where basal locking pin is sub assembly 60 comprising: rod 70 having predetermined length with apical end 71 and basal end 72, rod 70 defining longitudinal axis XL70 and rail 73 (see e.g., FIG.s 5B, 6A, 6B) radially extending along portion of rod 70; and extension 65, having apical end 64, slidably, coupled to rod 70, operable to slidably translate along rod’s 70 longitudinal axis XL o. As illustrated further in FIGs. 5A-6B, extension 65 is comprised of: open interrupted sleeve 61, defining external diameter and internal diameter 69, internal diameter 69 configured to accommodate rod 70, wherein interrupted sleeve 61 is sized and configured to cover portion of rod 70 that is shorter than length of rod 70. Extension 65 further comprises linker 62, radially coupled to interrupted sleeve 61; and engagement member 63, having apical end 64 and basal end 66, wherein apical end 64 (with 64a) defines predetermined surface topology, and wherein linker 62 and engagement member 63, together define predetermined perimeter shape.

[0050] Additionally or alternatively, as illustrated in FIG. 6C, basal locking pin is sub assembly 90 comprising: rod 700 having predetermined length with apical end 701 and basal end 702, rod 700 defining longitudinal axis AL 700; and extension 95, having apical end 94, extension 95 slidably, coupled to rod 700, operable to slidably translate along rod’s 700 longitudinal axis XL700. As illustrated further in FIG. 6C, extension 95 is comprised of: cylindrical sleeve 91, defining external diameter and internal diameter 99, internal diameter 99 configured to accommodate rod 700, wherein cylindrical sleeve 91 is sized and configured to cover portion of rod 700 that is shorter than length of rod 700. Extesnion 95 further comprises linker 92, radially coupled to cylindrical sleeve 91; and engagement member 93, having apical end 94 and basal end 96, wherein apical end 94 (with interface surface 94a) definesDocket No. 35004PC predetermined surface topology, and wherein linker 92 and engagement member 93, together define predetermined perimeter shape, configured to be accommodated in cavity 421b (see e.g., FIG. 4A) having a cross section with complimentary perimeter shape.

[0051] As illustrated in FIG. 4A, at least one barrel bore 422 extending radially in a diametrically opposed direction to barrel bores 412a in registration with plurality of corresponding column bores 401a, are in registration, further defines cavity 421b sized and configured to accommodate linker 62 and engagement member 63 of extension 65, sized and configured to allow interrupted sleeve 61 to slidably translate along rod 70 with rail 73 securing the radial directionality of rod 70.

[0052] In another exemplary implementation, at least one barrel bore 412a extending radially in registration with plurality of corresponding column bores 401a, further defines cavity 421a sized and configured to accommodate linker 62 and engagement member 63 of extension 65, sized and configured to allow interrupted sleeve 61 to slidably translate along rod 70 with rail 73 securing the radial directionality of rod 70 and corresponding at least one column pin 404a disposed within column bore 401a is sub assembly 60 (or 80).

[0053] As illustrated in FIG. 4B, the surface topology of apical surface 64 (84, see e.g., FIG. 6)of the engagement member 65, is sized and configured to engage at least one groove 1 la-1 le in at least one concave depression 11 with plurality of grooves Hi, while apical end 71 of rod 70 is configured to engage a corresponding location in elongated engagement area 21a, such that upon insertion of authorized key blade 200, the apical surface 64 (84) of the engagement element 65 (85) and apical end 71 of rod 70 are configured to engage at least one groove 1 la-1 le in at least one concave depression 11 with plurality of grooves Hi, and elongated engagement area 21a simultaneously.

[0054] In an exemplary implementation, the keys and key blades disclosed herein are used in combination with the cylinder locks disclosed herein. Further, the keys and lock assemblies disclosed are used in methods provided for preventing an unauthorized entry to an enclosed space. Accordingly and in yet another exemplary implementation, provided herein is a method of preventing an unauthorized entry to an enclosed space having an opening with a door having the cylinder lock therein by key bumping, the cylinder lock configured to transition between a locked position preventing entry to the enclosed space, and an open position allowing entry to the enclosed space, the method comprises: providing a door wherein the cylinder lock comprises: a rotatable barrel 400 defining an external surface 413, having a proximal end 411 and a distal end 410 with an axial key way 4100 and a plurality of barrel bores 412a extending radially in one direction from, and in communication with the keyway 4100 , and at least one barrel bore 422 extending radially in a diametrically opposed directionDocket No. 35004PC to the column bores 412a in communication with the axial keyway4100, the barrel 400 being selectably, rotateably movable within a cylindrical housing 500 portion 502; the cylindrical housing 500 portion 502 having a column portion 501 with a plurality of column bores 401a in registration with the plurality of barrel bores 412a, extending radially from the cylindrical housing 500 portion 502, wherein the cylindrical housing 500 further comprises at least one housing bore 424 diametrically opposed to the column bores 401a, the housing bore 424 being in registration with the at least one barrel bore 422 extending radially in a diametrically opposed direction to the column bores 401a; a first locking pin assembly, comprising at least one column pin 404a disposed within a column bore 401a, and at least one apical barrel pin 406a disposed with the registered barrel bore 412a; and a second locking pin assembly 50 comprising a cylindrical housing pin sub assembly disposed within the at least one housing bore 424 diametrically opposed to the column bores 401a, and at least one basal barrel pin 53, disposed within the at least one barrel bore 422 extending radially in a diametrically opposed direction to the column bores 401a, and wherein the second locking pin assembly is configured to engage at least one groove 1 la-1 le in at least one concave depression 11 with a plurality of grooves Hi defining longitudinal axes XL , the groves 1 la-1 le defined in a key blade 200 having at least one planar surface 201 defining a longitudinal axis XL200 and an elongated engagement area 21a comprising in certain exemplary implementation, a plurality of depressions 210a each having pre-determined surface topology, whereby the cylindrical housing pin sub assembly comprises: a stopper 51 coupled to an external surface 5020 of the at least one housing bore 424 defined in the cylindrical housing 500; a biasing element 55 abutting the stopper 51; a housing plug 52 having an apical surface 520 and a basal surface 530, the housing plug 52 disposed within the at least one housing bore 424 defined in the cylindrical housing 500, wherein the basal surface 521 of the housing plug 52 being biased away from the stopper 51 by the biasing element 55; and the basal locking pin 53, having a basal surface 531 and an apical surface 530, wherein the apical surface 520 of the housing plug 52 is configured to abut the basal surface 531 of the basal locking pin 53, while the apical surface 530 of the basal locking pin 53 is configured to engage at least one groove 1 la-1 le in the at least one concave depression 11 with the plurality of grooves Hi.

[0055] Turning now to FIG.s 7A-8B, illustrating additional and / or alternative configurations where the basal locking pins illustrated in FIG. 6C, are used as part of a locking pin assembly 800, 900 disposed partially within column 501, and partially within cylinder 411, where the cylinder locking pin sub assembly 91, 9100 (see e.g., FIG.s 7A, 8 A respectively) is likewise configured to (randomly) engage depression 11 with plurality of grooves 1 la-1 Id via apical surface 94, each defining parallel longitudinal axes XLm, with apical end 701, 9602 respectively, configured to simultaneously engageDocket No. 35004PC one of the depressions 210a in elongated engagement area 21a. Additionally, column sub-assembly 910, 9010 is each accommodated within column bores 421a.

[0056] As illustrated in FIG. 7B, column sub-assembly portion of locking pin assembly 800, comprises partially closed cylindrical sheath 910 having apical end 912 and basal end 911 defining aperture 915 with pin 9300, having basal portion 930 with basal end 934 and apical end 931 and head portion 932 having apical end 933, configured to abut basal end 702 of rod 700 forming a first portion of the shear surface aligned with shear surface 4000 (see e.g., FIG. 7C) wherein head portion 932 having a diameter larger than basal portion 930. Head portion 932 having an outer diameter sized to be accommodated within the internal diameter of cylindrical sheath 910, with biasing element 920 having an internal diameter that is configured to accommodate basal portion 930 of pin 9300, yet be larger than aperture 915 and smaller than outer diameter of head portion 932, configured to bias pin 9300 against basal end 702 of rod 700 all forming the column 501 sub assembly with second shear surface, which must be aligned with shear surface to allow rotation of barrel 400 within cylindrical housing 500 portion 502. As further illustrated in FIG. 7C, apical surface 94 of extension 23 is configured to abut one of grooves 1 la-1 le in a random manner, while apical end 701, is sized and configured to engage corresponding depression 210a in elongated engagement area 21a of key blade 200 (see e.g., FIGs IB, 7C).

[0057] Turning now to FIGs 8B, 8C where additional complexity (and thus safety locking combination) is introduced, by incorporating telescopic rod 9500 accommodated within nesting flanged tube 9600, with apical surfaces 9502 and 9602 configured to engage one of the depressions 210a in elongated engagement area 21a of key blade 200. As illustrated telescopic, nested rods 9500, and 9600 together with the extension 9105 comprised of sleeve 9100, and engagement member 9103 having apical surface topology 9104 configured to engage depression 11 with plurality of grooves 1 la- 1 Id, each defining parallel longitudinal axes XLm, each has a complementary member (9000, 9001, 9002 respectively), in the column 501 sub assembly and each with its own biasing element (9230, 9220,403b respectively), such that each locking pin assembly forms three (3) discrete shear surfaces that need alignment by the key blade 200 to form common shear line 4000 (see e.g., FIG. 8C) to allow rotation of barrel 400 within cylindrical housing 500 portion 502.

[0058] Turning now to FIGs 9A-15, illustrating another exemplary implementation whereby concave depression 3010 is notched in angularly bitted key blade 3001 (see e.g., FIG. 9B). As illustrated in FIGs 9B-12B, provided herein is key 32 comprising angularly bitted 3201a key blade for use with cylinder lock 40 (see e.g., FIGs 9A, having plurality of locking pins 404a, 406a (see e.g., FIGs 10C, 12A, 12B), key 32 having two planar surfaces 3000, 3001 defining longitudinal axis,Docket No. 35004PC wherein one planar surface (e.g., 3000, see e.g., FIGs 9C, 10B) further defining at least one concave depression 3010 with plurality of grooves (1 la-1 le, see e.g., FIG. IB) defining longitudinal axes, plurality of grooves 1 la-1 le, adapted, sized and configured to reversibly engage at least portion (see e.g., tooth 6005, FIG. 10C) of complementary surface of an eccentric locking pin 6000 disposed perpendicular to plurality of locking pins 404a, 406a. Key 32 further cam define coupling notch 3201b, configured to reversibly engage key head 3101 (see e.g., FIG. 9A, 9D, 10C, 12A, 12B, 13C), with axial groove 3202a, 3202 defined in one planar surface 3001 of key 32, sized to interface with complementary surface of cylinder lock 40, key way 4100 (see e.g., FIG. 15). Also illustrated is distal end 3002 of key 32, and proximal end 3003, as well as cut beds 3203 (see e.g., FIG.s 10B, 10C, 12B, referring to the portions of key 32 blade where the tumblers rest when the proper key is inserted into the lock, forming common shear line 4000).

[0059] Alternatively, or additionally, as illustrated in FIG. 9E, key 32 blade can further comprise a plurality of non-grooved dimples 301 Ij (see e.g., FIG. 9E), which may be overlapping or separate. Also contemplated are configurations where concave depression is comprised of a plurality of concave channels e.g., ll’a, l l’c, ll’e etched separately into key 32 blade.

[0060] In yet another exemplary implementation, illustrated in FIG.s 9A - 15, provided herein is cylinder lock 40 comprising: rotatable barrel 400n (see e.g., FIG. 11) defining external surface 413n, having proximal end 41 In and distal end 414n with axial keyway 4100 (see e.g., FIG. 15) and plurality of aligned bores 421a extending radially in one direction from, and in communication with key way 4100, and at least one barrel bore 421b, extending radially perpendicular to aligned bores 421a in communication with axial key way 4100, barrel 400n being selectably, rotateably movable within cylindrical housing 5000 portion 5030; cylindrical housing portion 5030 having column portion 5010 (see e.g., FIG.s 9A, 9D, 11, 12A, 15), with plurality of column bores 401a in registration with plurality of aligned bores 421a in barrel 400n, extending radially from cylindrical housing portion 5030, wherein cylindrical housing portion 5030 further comprises at least one aperture 4240 diametrically perpendicular to column bores 401a, barrel bore 421b being in registration with aperture 4240. Also illustrated in e.g., FIG.s 10C, 12A, 12B, 13A, 13C), is first locking pin assembly (without limiting the actual location), comprising at least one column pin 404a, disposed within column bore 401a, and at least one apical barrel pin 406a disposed with corresponding athaligned bore of plurality of aligned bores 421a. As further illustrated (see e.g., FIG.s 9A, 9D, 12B), eccentric locking pin 6000, is disposed partially within at least one aperture 4240 perpendicular to column bore 401a, extending into registered barrel bore 421b disposed perpendicular to aligned barrel bores 421a.Docket No. 35004PC

[0061] As further illustrated (see e.g., FIG.s 9A, 9D, 10C, 12A, in yet another exemplary implementation, eccentric locking pin 6000 is configured to engage one planar surface 3001 in key 32 defining at least one concave depression 3010 with plurality of grooves 1 la-1 le defining longitudinal axes, whereby concave depression 3010 defined in key 32, which comprises angularly bitted 3201a key blade.

[0062] Turning now to FIG.s 9A, 9D, 10C, 12A, and 12B illustrating first exemplary implementation, of passive eccentric locking pin 6 (see e.g., FIG. 10C), as comprising cylindrical rod 6000 having basal end 6007 and apical end 6001; and extension 6003 protruding radially from basal end 6007 of rod 6000, extension 6003 defining: apical surface 6004 having predetermined perimeter; and basal surface 6008 further comprising basally protruding tooth 6005, sized and adapted to engage at least one groove 1 la-1 le in plurality of grooves 11 defined in at least one concave depression 3010 defined in key 32, which comprises angularly bitted 3201a key blade. As further illustrated in FIG.s 9A, 9D, 11, and 12A, barrel bore 421b extending radially perpendicular to the aligned bores 421a in communication with axial key way 4100, is sized to at least partially accommodate the extension 6003, defining a bore having surface that is complimentary to the X-Y cross section (in other words, horizontal plane, on Cartesian coordinates) defined by rod 6000, extension linker 6009, and extension 6003. Furthermore, and as illustrated in FIG.s 9A, and 15, at least one aperture 4240 diametrically perpendicular to the column bores 401a is sized to at least partially accommodate cylindrical rod 6001 of eccentric locking pin 6.

[0063] Turning now to FIG.s 13A, 13B, illustrating yet another exemplary implementation, whereby eccentric locking pin is pin assembly rather than a single eccentric pin 6, comprising a passive eccentric pin 7 comprised of cylindrical rod 6022 having basal end 6020 and substantially flat apical end 6021 and an extension 6023 protruding radially from basal end 6020 of rod 6022 via extension linker 6029, where extension 6023 further defining an apical surface 6024 having predetermined perimeter 6025, and a basal surface 6028 with basally protruding tooth 6027, sized and adapted to engage at least one groove 1 la-1 le in plurality of grooves 11 defined in at least one concave depression 3010 defined in key 32, which comprises angularly bitted 3201a key blade (with appropriate cut beds 3203). Eccentric locking pin assembly further comprises actuator portion comprising: hollow cap 6220, sized and adapted to block at least one aperture 4240 diametrically perpendicular to column bores 401a, hollow cap 6220 defining cylindrical volume 6222. Actuator sub-assembly portion is further comprised of cylindrical plug 6320 having substantially flat base 6322 with ring 6321 disposed apically, forming cylindrical volume 6325, as well as biasing element 6330 disposed between hollow cap 6220 and cylindrical plug 6320, wherein substantially flat base 6322 of cylindrical plug is sizedDocket No. 35004PC and configured to abut substantially flat apical end 6021 of cylindrical rod 6022, and biasing element 6330 is configured to urge cylindrical plug 6320 away from hollow cap 6220, and therefore by proxy, urging passive eccentric pin 7 toward key way 4100. It is noted, that although FIG. 13B illustrates apical end 6021 of rod 6022 as being substantially flat, an topology of apical end 6021 is contemplated, provided that base 6322 of plug 6320 has a complimentary surface. For example, using eccentric pin 6, having in an exemplary implementation a conical, or frusto-conical apical end 6001 can be used with actuator portion, with base 6322 of plug 6320 having a concave depression complimentary to apical end 6001. Additionally, actuator portion cap 6220 is sized, adapted and configured to block at least one aperture 4240 diametrically perpendicular to the column bores 401a.

[0064] Turning now to FIG. 14, illustrating yet another exemplary implementation, used in certain examples to actuate passive eccentric pin 6 (or 7 for that matter) for refurbishing and existing cylindrical lock 40, or as an initial installation in other examples. As illustrated, eccentric (passive) locking pin 6 further comprises actuator sub-assembly comprised of ring 6440 having internal diameter ID6440 sized to accommodate (the outer diameter of) cylindrical rod 6042 (6001), and outer diameter OD6440 larger than inner diameter (ID4240, see e.g., FIG. 9A, 15) of at least one aperture 4240 diametrically perpendicular to column bores 401a, and expansion spring 6450, having internal diameter (ID6450) sized to accommodate (the outer diameter of) cylindrical rod 6042 (6001), and external diameter OD6450 smaller than the outer diameter (OD6440) of the ring 6440. Additionally, at least one barrel bore 421b extending radially perpendicular to the plurality of aligned bores 421a is sized to accommodate the outer diameter OD6440 of ring 6440, while at least one aperture 4240 diametrically perpendicular to the column bores 401a is sized to at least partially accommodate cylindrical rod 6042 (6001, 6022) of the eccentric locking pin 6, 7. Accordingly, and since outer diameter OD6440 larger than inner diameter (ID4240, see e.g., FIG. 9A, 15) of at least one aperture 4240 diametrically perpendicular to column bores 401a, and expansion spring 6450 is compressed between ring 6440 and upper surface 6044 (6004, 6024) of extension 6043 (6003, 6023), formerly passive eccentric pin 6, 7, is urged toward key way 4100 of barrel 400n in cylindrical lock 40, with tooth 6047 (6005, 6027), sized and adapted to engage at least one groove 1 la-1 le in plurality of grooves 11 defined in at least one concave depression 3010 defined in key 32, which comprises angularly bitted 3201a key blade (with appropriate cut beds 3203).

[0065] In certain exemplary implementations, before providing the door, the method further comprises assembling the cylinder lock; and while assembling the cylinder lock, randomly assigning a sleeve configured to engage a predetermined groove in the at least one concave depression with the plurality of grooves.Docket No. 35004PC

[0066] The term "about", when used in the description of the technology and / or claims means that amounts, sizes, formulations, parameters, and other quantities and characteristics are not and need not be exact, but may be approximate and / or larger or smaller, as desired, reflecting tolerances, conversion factors, rounding off, measurement error and the like, and other factors known to those of skill in the art. In general, amount, size, formulation, parameter or other quantity or characteristic is "about" or "approximate" whether or not expressly stated to be such and may include the end points of any range provided including, for example ±25%, or ±20%, specifically, ±15%, or ±10%, more specifically, ±5% of the indicated value of the disclosed amounts, sizes, formulations, parameters, and other quantities and characteristics.

[0067] All ranges disclosed herein are inclusive of the endpoints, and the endpoints are independently combinable with each other. “Combination” is inclusive of blends, mixtures, alloys, reaction products, and the like. Furthermore, the terms “first,” “second,” and the like, herein do not denote any order, quantity, or importance, but rather are used to denote one element from another. The terms “a”, “an” and “the” herein do not denote a limitation of quantity, and are to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. The suffix “(s)” as used herein is intended to include both the singular and the plural of the term that it modifies, thereby including one or more of that term (e.g., the bore(s) includes one or more bore). Reference throughout the specification to “one exemplary implementation”, “another exemplary implementation”, “an exemplary implementation”, and so forth, means that a particular element (e.g., feature, structure, and / or characteristic) described in connection with the exemplary implementation is included in at least one exemplary implementation described herein, and may or may not be present in other exemplary implementations. In addition, it is to be understood that the described elements may be combined in any suitable manner in the various exemplary implementations.

[0068] As used herein, the language referring in certain exemplary implementations to “sized, shaped and configured” refer to complimentary surfaces that facilitate the interaction indicated, for example, engaging the basal end 8033 of engagement member 8031 in extender 803 on complimentary surface 1040 (or 1041, 1042 for basal ends 4033, 4043, see e.g., FIG.s 4A, 4B).

[0069] While particular exemplary implementations have been described, alternatives, modifications, variations, improvements, and substantial equivalents that are or may be presently unforeseen may arise to applicants or others skilled in the art. Accordingly, the appended claims as filed and as they may be amended, are intended to embrace all such alternatives, modifications variations, improvements, and substantial equivalents.

Claims

Docket No. 35004PCWHAT IS CLAIMED1. A key comprising a key blade for use with a cylinder lock, having at least one planar surface defining a longitudinal axis, the key blade further defining at least two concave depressions, and / or at least one concave depression with a plurality of grooves defining longitudinal axes with a plurality of grooves defining longitudinal axes, the plurality of grooves adapted, sized and configured to reversibly engage at least a portion of a complementary surface of a locking pin; and an elongated engagement area.2 The key of claim 1 , wherein the longitudinal axis defined by the grooves and the longitudinal axis defined by the elongated engagement area form a predefined angle.3 The key of claim 2, wherein the predetermined angle is between about 15 ° and 165 °.4 The key of claim 3, wherein the depth of each groove in the plurality of grooves is the same depth.5 The key of claim 3, wherein the depth of each groove in the plurality of grooves is predetermined.6 The key of claim 1 , wherein the at least a portion of a complementary surface of a locking pin is configured to engage the at least one depression of the at least two depressions, wherein the at least one depression of the at least two concave depressions is positioned on the key blade separately from the elongated engagement area.7 A cylinder lock comprising: a) a rotatable barrel defining an external surface, having a proximal end and a distal end with an axial key way and a plurality of barrel bores extending radially in one direction from, and in communication with the keyway, and at least one barrel bore extending radially in a diametrically opposed direction to the column bores in communication with the axial keyway, the barrel being selectably, rotateably movable within a cylindrical housing portion; b) the cylindrical housing portion having a column portion with a plurality of column bores in registration with the plurality of barrel bores, extending radially from the cylindrical housing portion, wherein the cylindrical housing further comprises at least one housing bore diametrically opposed to the column bore, the barrel bore being in registration with the at least one housing bore extending radially in a diametrically opposed direction to the column bores; c) a first locking pin assembly, comprising at least one column pin disposed within a column bore, and at least one apical barrel pin disposed with the registered barrel bore; andDocket No. 35004PC d) a second locking pin assembly comprising a cylindrical housing pin sub assembly disposed within the at least one housing bore diametrically opposed to the column bore, and at least one basal barrel pin, disposed within the at least one barrel bore extending radially in a diametrically opposed direction to the barrel bores in registration with the plurality of corresponding column bores.

8. The cylinder lock of claim 7, wherein the second locking pin assembly configured to engage at least one depression of at least two depressions defined in a key blade having at least one planar surface defining a longitudinal axis and an elongated engagement area, wherein the at least one depression of the at least two concave depressions is positioned on the key blade separately from the elongated engagement area.9 The cylinder lock of claim 7, wherein the second locking pin assembly is configured to engage at least one groove in at least one concave depression with a plurality of grooves defining longitudinal axes, the groves defined in a key blade having at least one planar surface defining a longitudinal axis and an elongated engagement area.10 The cylinder lock of claim 7, wherein the second lock assembly comprises: a) the cylindrical housing pin sub assembly comprising: i. a stopper coupled to an external surface of the at least one housing bore defined in the cylindrical housing; ii. a biasing element abutting the stopper; iii. a housing plug having an apical surface and a basal surface, the housing plug disposed within the at least one housing bore defined in the cylindrical housing, wherein the basal surface of the housing plug being biased away from the stopper by the biasing element; and b) a basal locking pin, having a basal surface and an apical surface, wherein the apical surface of the housing plug is configured to abut the basal surface of the basal locking pin.11 The cylinder lock of claim 10, wherein the apical surface of the basal locking pin is configured to engage at least one groove in the at least one concave depression with the plurality of grooves.12 The cylinder lock of claim 10, wherein the apical surface of the basal locking pin is configured to engage the at least one concave depression of the at least two concave depressions.13 The cylinder lock of claim 10, wherein the basal locking pin is a sub assembly comprising: a) a rod having a predetermined length with an apical end and a basal end, the rod defining a longitudinal axis and a rail radially extending along a portion of the rod; and b) an extension, having an apical end, slidably, coupled to the rod, operable to slidably translate along the rod’s longitudinal axis.14 The cylinder lock of claim 13, wherein the extension is comprised of:Docket No. 35004PC a) an open sleeve, defining an external diameter and an internal diameter, the internal diameter configured to accommodate the rod, wherein the sleeve is sized and configured to cover a portion of the rod that is shorter than the length of the rod; b) a linker, radially coupled to the sleeve ; and c) an engagement member, having an apical end and a basal end, wherein the apical end defines a predetermined surface topology, the linker and the engagement member define a predetermined perimeter.

15. The cylinder lock of claim 13, wherein the at least one barrel bore extending radially in a diametrically opposed direction to the column bores further defines a cavity sized and configured to accommodate the linker and the engagement member of the extension, sized and configured to allow the sleeve to slidably translate along the rod.

16. The cylinder lock of claim 14, wherein the surface topology of the apical surface of the engagement member, is sized and configured to engage at least one groove in the at least one concave depression with the plurality of grooves.

17. The cylinder lock of claim 16, wherein the apical end of the rod is configured to engage the elongated engagement area.

18. The cylinder lock of claim 17, wherein upon insertion of an authorized key blade of claim 7, the apical surface of the engagement element and the apical end of the rod are configured to engage the at least one groove in the at least one concave depression with the plurality of grooves, and the elongated engagement area simultaneously.

19. A key and lock combination comprising the key of any one of claims 1-6, at least partially inserted in the axial key way of the cylinder lock of any one of claims 7-18.

20. A method of preventing an unauthorized entry to an enclosed space having an opening with a door having the cylinder lock therein by key bumping, the cylinder lock configured to transition between a locked position preventing entry to the enclosed space, and an open position allowing entry to the enclosed space, upon insertion of key comprising a key blade for use with a cylinder lock, having at least one planar surface defining a longitudinal axis, the key blade further defining at least two concave depressions, and / or at least one concave depression with a plurality of grooves defining longitudinal axes with a plurality of grooves defining longitudinal axes, the plurality of grooves adapted, sized and configured to reversibly engage at least a portion of a complementary surface of a locking pin; and an elongated engagement area, the method comprises: providing a door wherein the cylinder lock comprises: a rotatable barrel defining an external surface, having a proximal end and a distal end with an axial key way and a plurality of barrel bores extending radially in one direction from,Docket No. 35004PC and in communication with the key way, and at least one barrel bore extending radially in a diametrically opposed direction to the column bores in communication with the axial keyway, the barrel being selectably, rotateably movable within a cylindrical housing portion; the cylindrical housing portion having a column portion with a plurality of column bores in registration with the plurality of barrel bores, extending radially from the cylindrical housing portion, wherein the cylindrical housing further comprises at least one housing bore diametrically opposed to the column bore, the housing bore being in registration with the at least one barrel bore extending radially in a diametrically opposed direction to the column bores; a first locking pin assembly, comprising at least one column pin disposed within a column bore, and at least one apical barrel pin disposed with the registered barrel bore; and a second locking pin assembly comprising a cylindrical housing pin sub assembly disposed within the at least one housing bore diametrically opposed to the column bore, and at least one basal barrel pin, disposed within the at least one barrel bore extending radially in a diametrically opposed direction to the column bores, and wherein the second locking pin assembly is configured to engage at least one depression of the at least two depressions and / or at least one groove in the at least one concave depression with a plurality of grooves defining longitudinal axes, whereby the cylindrical housing pin sub assembly comprises: a stopper coupled to an external surface of the at least one housing bore defined in the cylindrical housing; a biasing element abutting the stopper; a housing plug having an apical surface and a basal surface, the housing plug disposed within the at least one housing bore defined in the cylindrical housing, wherein the basal surface of the housing plug being biased away from the stopper by the biasing element; and the basal locking pin, having a basal surface and an apical surface, wherein the apical surface of the housing plug is configured to abut the basal surface of the basal locking pin, while the apical surface of the basal locking pin is configured to engage the at least one depression of at least two depressions and / or engage the at least one groove in the at least one concave depression with the plurality of grooves.

21. The method of claim 20, wherein the cylindrical housing pin sub assembly comprises: a) a rod having a predetermined length with an apical end and a basal end, the rod defining a longitudinal axis and a rail radially extending along a portion of the predetermined length; and b) an extension, having an apical end, slidably, coupled to the rod, operable to slidably translate along the rod’s longitudinal axis, .

22. The method of claim 21, wherein the extension is comprised of: a) an open sleeve, defining an external diameter and an internal diameter, the internal diameter configured to accommodate the rod, wherein the sleeve is sized and configured to cover a portion of the rod that is shorter than the length of the rod;Docket No. 35004PC b) a linker, radially coupled to the sleeve; and an engagement member, having an apical end and a basal end, wherein the apical end defines a predetermined surface topology, the linker and the engagement member define a predetermined perimeter.

23. The method of claim 22, wherein the surface topology of the apical surface of the engagement member, is sized and configured to engage at least one depression of at least two depressions, wherein the at least one depression of the at least two concave depressions is positioned on the key blade separately from the elongated engagement area.

24. The method of claim 22, wherein the surface topology of the apical surface of the engagement member, is sized and configured to engage at least one groove in the at least one concave depression with the plurality of grooves.

25. The method of claim 21 further comprising: a) before providing the door, assembling the cylinder lock; and b) while assembling the cylinder lock, randomly assigning a sleeve configured to engage aredetermined groove in the at least one concave depression with the plurality of grooves.

26. A key comprising an angularly bitted key blade for use with a cylinder lock having a plurality of locking pins, the key having two planar surfaces defining a longitudinal axis, wherein one planar surface further defining at least one concave depression with a plurality of grooves defining longitudinal axes, the plurality of grooves adapted, sized and configured to reversibly engage at least a portion of a complementary surface of a barrel locking pin disposed perpendicular to the plurality of locking pins.

27. A cylinder lock comprising: a) a rotatable barrel defining an external surface, having a proximal end and a distal end with an axial key way and a plurality of aligned bores extending radially in one direction from, and in communication with the keyway, and at least one barrel bore extending radially perpendicular to the aligned bores in communication with the axial key way, the barrel being selectably, rotateably movable within a cylindrical housing portion; b) the cylindrical housing portion having a column portion with a plurality of column bores in registration with the plurality of aligned bores in the barrel, extending radially from the cylindrical housing portion, wherein the cylindrical housing further comprises at least one aperture diametrically perpendicular to the column bores, the barrel bore being in registration with the aperture; c) a first locking pin assembly, comprising at least one column pin disposed within a column bore, and at least one apical barrel pin disposed with a corresponding barrel bore; andDocket No. 35004PC d) an eccentric locking pin disposed partially within the at least one aperture perpendicular to the column bore, extending into the registered barrel bore disposed perpendicular to the aligned barrel bores.

28. The cylinder lock of claim 27, wherein the eccentric locking pin is configured to engage at least one substantially concave depression in one planar surface having a plurality of substantially concave depressions defined in a key comprising an angularly bitted key blade.

29. The cylinder lock of claim 27, wherein the eccentric locking pin is configured to engage one planar surface defining at least one concave depression with a plurality of grooves defining longitudinal axes, the concave depression defined in a key comprising an angularly bitted key blade.

30. The cylinder lock of claim 27, wherein the eccentric locking pin comprises: a) a cylindrical rod having a basal end and an apical end; and b) an extension protruding radially from the basal end of the rod, the extension defining: i. an apical surface having a predetermined perimeter; and ii. a basal surface further comprising a basally protruding tooth, sized and adapted to engage the at least one substantially concave depression in one planar surface having the plurality of substantially concave depressions, and / or a groove in the plurality of grooves defined in the at least one concave depression of the key comprising an angularly bitted key blade.

31. The cylinder lock of claim 27, wherein the at least one barrel bore extending radially perpendicular to the aligned bores in communication with the axial keyway, is sized to at least partially accommodate the extension.

32. The cylinder lock of claim 31, wherein the at least one aperture diametrically perpendicular to the column bores is sized to at least partially accommodate the cylindrical rod of the eccentric locking pin.

33. The cylinder lock of claim 27, wherein the eccentric locking pin is an eccentric locking pin assembly comprising: a) a passive eccentric pin comprising; i. a cylindrical rod having a basal end and a substantially flat apical end; and ii. an extension protruding radially from the basal end of the rod, the extension defining: an apical surface having a predetermined perimeter; andDocket No. 35004PC a basal surface a basally protruding tooth, sized and adapted to engage the at least one substantially concave depression in one planar surface having the plurality of substantially concave depressions, and / or a groove in the plurality of grooves defined in the at least one concave depression of the key comprising an angularly bitted key blade; and b) an actuator sub-assembly comprising: i. a hollow cap, sized and adapted to block the at least one aperture diametrically perpendicular to the column bores, the hollow cap defining a cylindrical volume; ii. a cylindrical plug having a substantially flat base with a ring disposed apically, forming a cylindrical volume; and iii. a biasing element disposed between the hollow cap and the cylindrical plug, wherein the substantially flat base of the cylindrical plug is sized and configured to abut the substantially flat apical end of the cylindrical rod, and the biasing element is configured to urge the cylindrical plug away from the hollow cap.

34. The cylinder lock of claim 27, wherein the eccentric locking pin further comprises an actuator sub-assembly comprised of: a) a ring having an internal diameter sized to accommodate the cylindrical rod, and an outer diameter larger than the at least one aperture diametrically perpendicular to the column bores; and b) an expansion spring, having an internal diameter sized to accommodate the cylindrical rod, and an external diameter smaller than the outer diameter of the ring.

35. The cylinder lock of claim 34, wherein the at least one barrel bore extending radially perpendicular to the aligned bores is sized to accommodate the outer diameter of the ring.

36. The cylinder lock of claim 35, wherein the at least one aperture diametrically perpendicular to the column bores is sized to at least partially accommodate the cylindrical rod of the eccentric locking pin.

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