Patent Publication Number: US-10329795-B2

Title: Lock

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     The present application is a continuation-in-part of U.S. patent application Ser. No. 14/719,218 filed May 21, 2015, entitled “Lock”, the entire specification of which is hereby incorporated by reference, which is a continuation of PCT Patent Application No. PCT/US2014/038016 filed May 14, 2014, entitled “Lock” the entire specification of which is hereby incorporated by reference, which claims priority from U.S. Provisional Patent Application Ser. No. 61/823,685, filed May 15, 2013, entitled “Hybrid-Electronic Core Lock”, the entire specification of which is hereby incorporated by reference. 
    
    
     BACKGROUND OF THE DISCLOSURE 
     1. Field of the Disclosure 
     The disclosure relates in general to locks, and more particularly, to a core lock that is configured to provide electronic locking and unlocking of a lock. While not limited thereto, such a lock is well suited for use in association with furniture and cabinets, including as a retrofit to existing furniture and cabinets. Of course, the lock is not limited to such use or to such a field of use, and the foregoing is solely for purposes of example. 
     2. Background Art 
     Many cabinets, desks, and other storage applications utilize locks that include a shell mounted on the door or cabinet, and an insertable and removable lock core that plugs into the shell. The shell not only houses the core, but also attaches to a driver for accomplishing the locking and unlocking function when rotated. The lock core acts to lock the driver in place when there is no key inserted in the lock core due to lock core tumblers that protrude into the shell to restrict the lock core and driver from rotation. 
     When the correct key is inserted in the lock core, the protruding tumblers move with respect to the cuts in the key blade and no longer protrude into the shell and no longer restrict rotation of the lock core. As the lock core is turned by the user rotating the key, drive serves to drive a cam or locking bar to the unlocked position. 
     Such systems are ubiquitous, however, there are nevertheless drawbacks. For example, such systems typically have a vast number of different tumbler configurations, and corresponding keys associated with each such different tumbler configuration. As a result, a supplier must include a relatively large supply of spare locks, tumblers and keys to match those that are out in the field. Additionally, the removal and replacement of such locks (necessitated by the changing of the duty of a piece of furniture, dismissal of an employee, loss of a set of keys, etcetera) is very time consuming and labor intensive. 
     SUMMARY OF THE DISCLOSURE 
     The disclosure is directed to a lock driver for a lock. The lock driver for a lock, including a lock cylinder body, an actuation attachment portion and an adapter structure. The lock cylinder body has a front end, a back end opposite the front end and an outer surface. The lock cylinder is positionable and rotatable within a bushing. The actuation attachment portion extends from the front end of the lock cylinder body. The actuation attachment portion includes an attachment interface that one of user manipulatable and structurally configured for coupling to a user manipulatable structure. The adapter structure is associated with the back end of the lock cylinder body. The adapter structure is structurally configured to interface with an existing lock structure. 
     In some configurations, the lock cylinder body is substantially precluded from axial movement relative to the bushing. 
     In some configurations, the lock cylinder body further includes a slot extending transversely therethrough, with a master tumbler slidably positionable therein. The master tumbler has an end that is selectively extendable beyond the outer surface of the lock cylinder body so as to interface with a slot in a bushing. 
     In some configurations, the lock cylinder body further includes a slot access opening that extends from the front end to the slot providing access to the master tumbler for facilitating slidable movement of the master tumbler relative to the lock cylinder body. In some such configurations, a tool is provided that is insertable through the slot access opening so as to facilitate slidable movement of the master tumbler relative to the lock cylinder body. 
     In some configurations, the master tumbler is biased relative to the lock cylinder body so as to have the end thereof extend beyond the outer surface of the lock cylinder body. 
     In some configurations, the master tumbler and the slot are substantially perpendicular to an axis of rotation of the lock cylinder body within a bushing. 
     In some configurations, the slot having the master tumbler is spaced apart from each of the front end and the back end and substantially parallel to each of the front end and the back end. 
     In some configurations, the lock cylinder body further includes at least one flange that is spaced apart from the front end. The at least one flange cooperates with at least one of the front end and a bushing to preclude axial movement of the lock cylinder body relative to a bushing. 
     In some configurations, the outer surface of the lock cylinder body defines a substantially cylindrical configuration. 
     In some configurations, the outer surface of the lock cylinder body includes at least one of a cutaway portion defined thereinto and a depression defined thereinto. 
     In some configurations, the cutaway portion extends to the back end of the lock cylinder body. 
     In some configurations, the actuation attachment portion comprises an elongated post member extending from the front end of the lock cylinder body. 
     In some configurations, the elongated post member is centered about an axis of rotation of the lock cylinder body when positioned within a bushing. 
     In some configurations, the elongated post member includes an attachment interface at a distal end thereof. 
     In some configurations, the adapter structure includes an interface which extends from the back end in a direction that is one of toward the front end of the lock cylinder body and away from the lock cylinder body. 
     In some configurations, the interface extends from the back end in a direction away from the front end, so as to interface with a depression or other structure of an existing lock structure. 
     In some configurations, the lock driver is substantially precluded from rotation movement, instead being substantially limited to axial movement. 
     In some configurations, the lock driver further includes a knob integrally formed with the lock cylinder body. 
     In some configurations, the lock driver further includes a biasing member structurally configured to axially bias the lock driver. 
     In some configurations, the interface extends from the back end in a direction toward the front end, so as to interface with a protruded member of an existing lock structure. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The disclosure will now be described with reference to the drawings wherein: 
         FIG. 1A  of the drawings is a front perspective view of the lock of the present disclosure; 
         FIG. 1B  of the drawings is a back perspective view of the lock of the present disclosure; 
         FIG. 2  of the drawings is a front perspective view of components of the housing assembly of the present disclosure; 
         FIG. 3  of the drawings is a top plan view of components of the housing assembly of the present disclosure; 
         FIG. 4  of the drawings is a bottom plan view of components of the housing assembly of the present disclosure; 
         FIG. 5  of the drawings is a top perspective view of the battery housing of the housing assembly of the present disclosure, showing, in particular, the cap in an open position providing access to a fastener which secures the battery housing to the housing assembly at the flange; 
         FIG. 6  of the drawings is a bottom perspective view of the battery housing of the housing assembly of the present disclosure, showing, in particular, the cap in an open position providing access to a fastener which secures the battery housing to the housing assembly at the flange; 
         FIG. 7  of the drawings is a perspective view of the actuatable lock assembly of the present disclosure; 
         FIG. 7A  of the drawings is a perspective view of the lock driver, showing, in particular, the insertion of the attachment tool which can be used to move the master tumbler to allow for insertion into the bushing; 
         FIG. 7B  of the drawings is a cross-sectional view of the lock driver, showing, in particular, the insertion of the attachment tool which can be used to move the master tumbler to allow for insertion into the bushing; 
       FIG.  7 C 1  of the drawings is a perspective view of another configuration of the lock driver of the present disclosure; 
       FIG.  7 C 2  of the drawings is a side elevational view of the configuration shown in FIG.  7 C 1 ; 
       FIG.  7 C 3  of the drawings is a perspective cross-sectional view of the configuration shown in FIG.  7 C 1 ; 
       FIG.  7 C 4  of the drawings is a perspective cross-sectional view of the configuration shown in FIG.  7 C 1 ; 
         FIG. 7D  of the drawings is a perspective view of another configuration of the lock driver of the present disclosure; 
         FIG. 7E  of the drawings is a perspective view of another configuration of the lock driver of the present disclosure; 
         FIG. 7F  of the drawings is a perspective view of another configuration of the lock driver of the present disclosure; 
         FIG. 7G  of the drawings is a perspective view of another configuration of the lock driver of the present disclosure; 
         FIG. 7H  of the drawings is a perspective view of another configuration of the lock driver of the present disclosure; 
         FIG. 7I  of the drawings is a perspective view of another configuration of the lock driver of the present disclosure; 
         FIG. 7J  of the drawings is a perspective view of another configuration of the lock driver of the present disclosure; 
       FIG.  7 K 1  of the drawings is a perspective view of another configuration of the lock of the present disclosure, showing, in particular an inward and outward moving knob (i.e., a pushbutton); 
       FIG.  7 K 2  of the drawings is a perspective view of a portion of the configuration of the lock of the present disclosure, shown in FIG.  7 K 1 , showing, the latch, blocker, cam and motor coupled together and with the lock driver with knob within the bushing having a locking flange, wherein the latch is in the locked configuration, precluding inward movement of the lock driver; 
       FIG.  7 K 3  of the drawings is a perspective view of the portion of the configuration of the lock of the present disclosure, shown in FIG.  7 K 2 , wherein the bushing/housing has been removed so that the interaction of the lock driver with the locking flange is shown; 
       FIG.  7 K 4  of the drawings is a perspective view of the lock driver of the type utilized in the lock of FIGS.  7 K 1  through  7 K 3 ; 
         FIG. 8  of the drawings is a perspective view of an existing furniture lock bushing that may be installed on furniture, or other structures which incorporate a lock; 
         FIG. 9  of the drawings is a front perspective view of the knob of the actuatable lock assembly of the present disclosure; 
         FIG. 10  of the drawings is a back perspective view of the knob of the actuatable lock assembly of the present disclosure; 
         FIG. 10B  of the drawings is a back perspective view of an alternate configuration of the knob of the actuatable lock assembly of the present disclosure, showing, in particular, a plurality of axial notches that are spaced apart from each other. 
         FIG. 11  of the drawings is a bottom plan view of the knob of the actuatable lock assembly of the present disclosure; 
         FIG. 12A  of the drawings is cross-sectional view of the lock showing, in particular, the latching assembly as mounted within the housing assembly and interfacing with the knob of the actuatable lock assembly of the present disclosure, showing the lock in a locked position; 
         FIG. 12B  of the drawings is a perspective view of components of the latching assembly and the knob of the actuatable lock assembly in the locked position; 
         FIG. 13A  of the drawings is a cross-sectional view of the lock showing, in particular, the latching assembly as mounted within the housing assembly and interfacing with the knob of the actuatable lock assembly of the present disclosure, showing the lock in an unlocked position; 
         FIG. 13B  of the drawings is a perspective view of components of the latching assembly and the knob of the actuatable lock assembly in the unlocked position; 
         FIG. 14  of the drawings is a side elevational view of the latch of the present disclosure, shown with the biasing member extending around a portion thereof; 
         FIG. 15  of the drawings comprises a front perspective view of the blocker of the present disclosure; 
         FIG. 16  of the drawings comprises a back perspective view of the blocker of the present disclosure; 
         FIG. 17  of the drawings comprises a front perspective view of the cam of the present disclosure; 
         FIG. 18  of the drawings comprises a back perspective view of the cam of the present disclosure; 
         FIGS. 19A through 19E  comprise sequential perspective views of the blocker, the cam and the motor as the cam and blocker move from the locked position to the unlocked position; 
         FIG. 20  of the drawings comprises a front perspective view of the electronic control assembly of the present disclosure; 
         FIG. 21  of the drawings comprises a front perspective view of the PC board of the control assembly of the present disclosure; 
         FIG. 22A through 22D  of the drawings are top plan views of the lock of the present disclosure in four different orientations, a vertically upward orientation, a vertically downward orientation, a horizontal orientation in a first direction and a horizontal orientation in a second direction; 
         FIG. 23  of the drawings is a perspective view of an alternate embodiment of the lock, showing, in particular, an actuatable lock member having a mechanical key over-ride; 
         FIG. 24  of the drawings is a perspective view of an alternate embodiment of the actuatable lock member of the type shown in  FIG. 27A  with a key inserted therein; 
         FIG. 25  of the drawings is a graphical representation of the current by the motor as measured through the unlocking cycle; 
         FIG. 26  of the drawings is a graphical representation of the current draw by the motor as measured through the locking cycle; 
         FIG. 27A  of the drawings is an alternate embodiment of the latch assembly and the knob of the actuatable lock assembly of the present disclosure, in the locked position; 
         FIG. 27B  of the drawings is an alternate embodiment of the latch assembly and the knob of the actuatable lock assembly of the present disclosure, that is shown in  FIG. 27A , in the unlocked position; 
         FIG. 28A  of the drawings is an alternate embodiment of the latch assembly of the present disclosure, in the locked position; 
         FIG. 28B  of the drawings is an alternate embodiment of the latch assembly of the present disclosure, that is shown in  FIG. 28A , in the unlocked position; 
         FIG. 29A  of the drawings is an alternate embodiment of the latch assembly of the present disclosure, in the locked position; 
         FIG. 29B  of the drawings is an alternate embodiment of the latch assembly of the present disclosure, that is shown in  FIG. 29A , in the unlocked position; and 
         FIG. 29C  of the drawings is an alternate embodiment of the latch assembly of the present disclosure, that is shown in  FIG. 29A , in the unlocked position, with the knob rotated relative to the knob position in  FIG. 29B . 
     
    
    
     DETAILED DESCRIPTION OF THE DISCLOSURE 
     While this invention is susceptible of embodiment in many different forms, there is shown in the drawings and described herein in detail a specific embodiment with the understanding that the present disclosure is to be considered as an exemplification and is not intended to be limited to the embodiment illustrated. 
     It will be understood that like or analogous elements and/or components, referred to herein, may be identified throughout the drawings by like reference characters. In addition, it will be understood that the drawings are merely schematic representations of the invention, and some of the components may have been distorted from actual scale for purposes of pictorial clarity. 
     Referring now to the drawings and in particular to  FIGS. 1 and 1A , the lock of the present invention is shown generally at  10 . The lock  10  may be utilized in a number of different environments and in association with a number of different installations, including but not limited to, doors, drawers, cabinets, pantries, desks, etc. One particular use of the lock is in the office furniture application (i.e., desks, credenzas, cabinets, wardrobes, etc), wherein it is contemplated that the lock can be a drop in replacement for the commonly installed office furniture locks. Of course, the disclosure is not limited to use in association with such applications. 
     Referring again to  FIGS. 1A and 1B , the lock  10  is shown as including housing assembly  12 , actuatable lock assembly  14 , latching assembly  16  ( FIG. 12A ) and electronic control assembly  18 . With reference to  FIGS. 2, 3 and 4 , the housing assembly  12  comprises a body with first end  20 , second end  22 , first side  24  and second side  26 , top  28  and bottom  30 . The housing assembly is shown as comprising a single cast member, although other configurations are contemplated. The single cast member may comprise a metal or alloy thereof, or may comprise a composite or polymer material. 
     As set forth above, it is contemplated that the lock of the present embodiment be suitable for use in association with furniture. Traditionally, the portion of the furniture that includes a lock has generally a dimension (either a length or a width, typically) that is only slightly larger than the lock body and necessary opening therefore. Generally, such a dimension is on the order of one inch or the like. Thus, it is preferred that the lock have a housing assembly that is one inch or less in width (or length when mounted in another direction) so as to be mountable on such a surface without a portion thereof overhanging the surface. As such, the lock of the present disclosure is sized so as to fit into most of the cabinets and furniture presently manufactured, without requiring any changes or redesign of the cabinet or furniture. Additionally, such a design allows for the retrofitting of existing cabinets and furniture. It will be understood that the lock is not limited to use in association with cabinets or furniture, and that such use is merely utilized for purposes of illustration. It is further contemplated, that to achieve the one inch dimension, the diameter of the cavity  32  is 0.93 inches, the diameter of the knob is 0.97 inches, with the thickness of the housing assembly being 0.39 inches and the thickness including the knob is 0.70 inches. Additionally, it is contemplated that the motor is 0.61 inches in length and 0.32 inches in width. Furthermore, it is contemplated that the battery have a diameter of 0.79 inches and a thickness of 0.13 inches. 
     The top  28  includes a recessed portion  31  which is configured to receive a keypad or other input device thereon. In one embodiment, the input device may comprise a number pad having a plurality of discrete numbers thereon. The number pad may include an outer perimeter and a thickness that is well suited for fitting into the recessed portion. In the embodiment shown, the recessed portion extends over much of the top  28  between the first side and the second side. The recessed portion may include an opening which provides for the passage of wiring or other electrical connectors that provides electrical communication between the input device and the rest of the electronic control assembly. 
     At or near the first end  20  of the housing assembly  12 , the acutuatable lock region  32  is positioned. The actuatable lock region  32  comprises an annular cavity having a base  50  and an upstand wall  52 . The base  50  includes a central opening  37  and may include other structures and openings therearound. The central opening  37  is configured for the passage of the portions of the actuatable lock assembly  14  and to link structures thereof on either side of the base  50 . For example, in the embodiment shown, four generally round chamfered openings (configured to receive fasteners) are disposed about the central opening in a generally uniformly spaced apart orientation. Additionally, four slot like openings are positioned in the space therebetween. 
     The upstanding wall  52  is a generally annular wall having a latch opening  54  extending therein providing communication between the cavity of the actuatable lock region with the main body cavity  34 . In addition, wall surface variations or indentations may be presented to match with the four slot like openings that are defined in the base. These may comprise detents that cooperate with spring loaded balls or the like incorporated into the knob  70  ( FIGS. 10 and 11 ) to form local positions of stable equilibrium wherein the knob can rest in such a position. It is contemplated that with the four different locations between two and four positions are defined (depending on the rotation of the knob). In other embodiments, a fewer or greater number of detents may be disposed on the upstanding wall  52  to cooperate with spring loaded balls incorporated into the knob. In still other embodiments, structures other than spring loaded balls, such as biasing leaves may be utilized. 
     In the embodiment shown, the upstanding wall extends from the base  50  to the top  28 , and is generally perpendicular to the top  28  as well as the base  50  of the actuatable lock region  32 . Additionally, the second end  22  of the housing assembly  12  may have a configuration that generally matches the upstand wall  52 . 
     Referring now to  FIG. 4 , extending across much of the housing assembly is the main body cavity  34  which opens toward the bottom  30 . In the embodiment shown, the main body cavity is on the opposite side of the top from the recessed region  31 . The main body cavity  34  includes a latch channel  40 , a blocker channel  42 , a motor retaining region  44  and a battery opening  46  ( FIG. 2 ). The latch channel  40  extends away from the latch opening  54  of the upstand wall  52  and intersects with the blocker channel  42 . The latch opening is generally tangent to the upstand wall  52  and extends longitudinally along the main body cavity, with the blocker channel  42  being substantially perpendicular thereto. Of course, other angular relationships are contemplated between the components and it is not necessarily that the components are tangent and perpendicular to each other, or that they align with the outer configuration of the housing assembly, including oblique relationships. The motor retaining region  44  is positioned adjacent to the blocker channel, and is configured to receive and maintain the motor in the proper orientation. A cover  47  can be provided to extend over the main body cavity  34 , and may be secured thereto through a plurality of fasteners. The cover or the housing can be coupled to an outside surface through fasteners at either end thereof, and/or through an adhesive (such as double stick tape) that can be applied to the cover  47 . 
     The battery opening  46  is positioned at the second end  22  of the housing assembly and provides ingress to the main body cavity  34 . In the embodiment shown, the opening generally has a rectangular cross-sectional configuration that substantially matches the cross-sectional configuration of the main body opening. A flange may extend from the battery opening at the bottom  30  of the housing assembly. The flange includes a plurality of openings that are configured for the receipt of pins or fasteners and the like. 
     With reference to  FIGS. 5 and 6 , the housing assembly  12  further includes a battery housing  36  and an outer cap  38 . The battery housing  36  is configured to receive a battery (generally a 3V lithium battery, such as a CR2032 or the like) and to allow for the proper positioning thereof in operation, as well as removal from the housing assembly for purposes of battery replacement. More particularly, the battery housing includes battery cradle  60  and outer region  62 . The battery cradle  60  is configured to retain the battery in a stable orientation for coupling to leads that are in electrical communication with electronic control assembly. 
     The outer region  62  includes a body configuration that fits over the flange and substantially matches the shape of the housing assembly  12  at the first end  20  thereof. The outer region includes an opening which corresponds to one of the openings on the flange  48  so as to allow coupling of the two components with a fastener such as a screw or nut. The removable cap  38  may be positioned over the top of the outer region so as to cover the fastener. In this manner, one must first remove the removable cap to have access to the fastener for disconnecting of the battery housing  36  and, in turn, the battery, from the housing assembly  12 , toward removal thereof. 
     The configuration of the battery housing has a number of functions and advantages. In particular, the battery housing grips and holds the battery, aligns the battery as the battery is inserted into the lock enclosure and insures that the battery makes a proper and secure connection to the contacts of the electronic control assembly. The battery housing additionally helps secure the battery position into the enclosure as it is seated into the enclosure. The battery housing provides means for gripping and withdrawing the battery from the lock enclosure when the changing of the battery is necessary. Advantageously, with the battery housing shown, such a replacement can be achieved without the use of a tool (i.e., tweezers and the like). Furthermore, the battery housing allows for a surface for securing the battery into the lock enclosure with a fastener, and the cap provides a cover for the fastener. 
     Referring now to  FIG. 7  and  FIG. 8 , the actuatable lock assembly includes knob  70 , lock driver  72  and lock spacer  74 . These components are coupled to furniture bushing  77 . It will be understood that furniture bushing  77  may comprise existing components of an existing furniture lock that has been mounted to the furniture. Advantageously, the present disclosure is directed to an actuatable lock assembly that is configured to fit within the existing furniture bushing  77 . Of course, in other embodiments, lock flange and furniture bushing  77  may be provided with the lock. In addition, other configurations that do not utilize the bushing are contemplated. 
     Referring now to  FIG. 9 through 11 , the knob  70  comprises a substantially cylindrical element having an outside surface  80  and dependent skirt  82 . As will be explained below the knob  70  is positioned within the cavity defined by the actuatable lock region  32  of the housing assembly  12 . The outside surface  80  is configured to facilitate the grasping and rotating thereof by a user, while the knob is in the cavity of the actuatable lock region. In the embodiment shown, the outside surface includes thumb turn regions which are configured to be grasped by the fingers of a user. Of course, a number of different surface configurations are contemplated to accommodate a particular design or a particular application. In another embodiment, in place of a knob, a detachable and reattachable tool can be utilized that plugs into the lock driver when needed. In other embodiments, in place of rotating, the knob can translate in an up and down or right and left configuration. In still other embodiments, the knob may comprise a movement inward and outward (wherein the knob may be biased into an outward position). One such configuration is shown in FIGS.  7 K 1  through  7 K 4 . In each of these embodiments, the movement of the knob (i.e., rotating, translating, moving inward and outward) can be selectively permitted by the positioning of the blocker into the unlocked position. 
     The dependent skirt  82  extends annularly around the knob  70  below the outside surface  80 . The dependent skirt  82  includes axial notch  84  which extends radially inward from the surface of the dependent skirt. The axial notch, as will be explained, is sized so as to receive the distal end of the latch of the latching assembly. The axial notch  84  is defined by two inwardly sloped surfaces, namely, first surface  83  and second surface  85 , which meet at vertex  86 . In the embodiment shown, the two sloped surfaces are angled relative to each other, defining an angle therebetween. While a number of variations are contemplated, at the dependent skirt, the axial notch defines an approximately 48° arc along the dependent skirt. The vertex  86 , in the embodiment shown, comprises a line that is parallel to the axis of rotation of the knob  70  within the cavity of the housing assembly. The surfaces  83 ,  85  are generally convex surfaces that are configured to shape matingly engage with the distal end of the latch, so that when the knob is turned, the surfaces  83  and/or  85  urge the latch out of the axial notch. 
     Of course, other configurations are contemplated for the axial notch, which may be paired with a latch having a particular configuration for the distal end thereof. Additionally, it will be understood that even with a configuration like that which is shown in the preferred embodiment, the angle and the length of the axial notch can be varied to achieve a different imparting of force against the distal end of the latch. It will be understood that the knob can be, depending on the embodiment, rotated clockwise or counterclockwise differing degrees of rotation to complete the operation. For example, it may be desirable to have the knob turn 90° or 180° in either the clockwise or counterclockwise direction to achieve the desired operation, however other degrees of rotation are likewise contemplated. Additionally, it is contemplated that the knob includes a plurality of axial notches, such as, for example, two axial notches that are spaced apart (i.e., 90° from each other). In such an embodiment, the blocker can operate in either position of the knob. In one example, such as for a locker application, when the door is unlocked and the knob is moved to the open position, the latch can enter the second axial notch and then the blocker can be moved to a locked configuration. As such, the lock is essentially locked in the unlocked configuration. This provides locking ability in more than one configuration of the knob (and, the associated actuatable lock assembly). One example of such a knob  70  is shown in  FIG. 10B , with the axial notch  84  and the second axial notch  84 ′ being shown on the knob  70 . Of course, a greater number of axial notches, including, but not limited to three and four axial notches, is likewise contemplated. 
     The knob  70  may be coupled to the lock driver  72  ( FIG. 7 ) through an interference fit, coupled with a set screw. In particular, the knob  70  includes an axially centered cavity  87  which is configured to engagingly receive the first end of the lock driver. In the embodiment shown, the cavity has a square cross-sectional configuration, such that when the correspondingly shaped first end of the lock driver is inserted, the two structures rotate together. A set screw, or pair of set screws can be extended through the dependent skirt  82  and into the cavity to engage the lock driver and to lock the lock driver in the installed position. Advantageously, access to the set screw is provided by way of a corresponding opening  89  ( FIG. 2 ) on the second end of the housing assembly. It will be understood that the opening of the housing assembly lines up with each one of the set screws on the dependent skirt  82  of the knob  70  when the knob is in a position other than the locked position (that is, the opening can be moved along the second end as long as when locked, the set screw does not match up with the opening). When in the locked position, each of the set screw is offset relative to the opening such that the set screw remains inaccessible. It will further be understood that the set screws provide a means by which to change the effective length of the lock driver. That is, the opening in the knob for receiving the lock driver allows for the lock driver to be inserted and retained by the set screws, at different depths within the opening. As a result, the single structure can accommodate variations in the overall lock depth caused by the application or design. 
     The lock driver  72  is shown in greater detail in  FIGS. 7A and 7B  as comprising master tumbler  231  which is slidably mounted in a channel that extends perpendicular to the axis of rotation of the lock driver in operation. A tool  233  is configured to be directable through a slot  235  in the lock driver so as to extend through opening  237  in the master tumbler  231 . The master tumbler  231  is biased by a spring (or other biasing member) so as to have an end stick out beyond the lock driver  72 . As such, when the lock driver  72  is inserted into the bushing, the tool can be utilized to overcome the biasing member and to pull the master tumbler into the lock driver  72 . Once in the driver, the lock driver can be inserted into the bushing. Once inserted, the tool  233  can be removed, and the spring will return the master tumbler to an orientation that extends out of the lock driver and interfaces with an axial channel in the bushing, which maintains the lock driver in engagement with the bushing so that it can rotate about its axis without being able to move axially. The tool can be reinserted to move the master tumbler so as to have the end thereof exit the axial channel of the bushing, so as to remove the lock driver from the bushing. In other embodiments, the lock driver  72  can be manipulated or tilted for installation purposes. 
     In greater detail, and with continued reference to  FIGS. 7A and 7B , the lock driver  72  includes lock cylinder body  500 , actuation attachment portion  502  and adapter structure  504 . The lock cylinder body  500 , as will be explained, is configured to fit within the bushing (and typically an existing bushing of a lock, often in a retrofit or replacement configuration). Additionally, the lock cylinder body  500  may vary depending on the bushing or lock system in which the lock driver  72  is utilized as a replacement or a drop in change. The lock cylinder body includes front end  510 , back end  512 , outer surface  514 . In the configuration shown, the cylinder lock body has a generally cylindrical configuration with the front end  510  defining a front face, and the back end  512  defining a back face. The outer surface is configured to permit rotational movement of the lock driver (typically about the actuation attachment portion or a central axis) within the bushing. A slot may be present that extends inwardly from the back end  512  to the slot  235  in the lock cylinder body  500 . 
     When installed, the lock driver  72  includes a structure to preclude axial movement of the lock driver statically and, preferably, during rotation of the lock cylinder body relative to the bushing. It will be understood that in certain configurations, the lock driver may be allowed to have some axial play, and such axial play may be limited by the lock cam structure beyond the bushing, or the actuator and lock body itself. However, it is preferred if the lock driver  72  can remain within the bushing, while being precluded from substantial axial movement. That can be achieved, in the embodiment shown, by the use of a master tumbler that is biased so that a portion extends beyond the outer surface (and engages a complementary structure within the bushing. 
     The master tumbler  231  includes an opening  237  and is biased by a spring  515  (FIG.  7 C 4 ) so as to have an end  529  extending outwardly beyond the outer surface  514 . The master tumbler  231  is placed within a slot  235  defined in the lock cylinder body  500  generally positioned between the front end  510  and the back end  512 . In the configuration shown, the master tumbler  231  is generally perpendicular to the axis of rotation so that the master tumbler generally rotates in a plane that is perpendicular to the axis of rotation. Additionally, in the configuration shown, the master tumbler is generally parallel to the front end  510  and the back end  512 . The slot is sized so as to permit slidable movement of the master tumbler  231  so that the end  529  thereof can be selectively extended or retracted relative to the outer surface  514 . 
     Access can be provided to the master tumbler from outside of the bushing. In the configuration shown, the access is accomplished by way of slot access opening  516  that extends through the lock cylinder body from the slot  235  to the front end  510 . In the configuration shown, the slot is angled so as to minimally obstruct the actuation attachment portion  502  (indeed, a portion of the actuation attachment portion is modified or cut to accommodate access to the slot access opening  516 ). As explained above, the slot access opening  516  allows for the insertion of tool  233  which can retract the master tumbler so that the end  529  no longer interfaces with the bushing (and so that it can be axially moved relative to the bushing). 
     The actuation attachment portion  502  is shown as including proximal end  530  that extends from the front end  510  of the lock cylinder body  500  and distal end spaced apart therefrom. In the configuration shown, the actuation attachment portion comprises an elongated post member that is generally centered about the axis of rotation of the lock cylinder body within the existing bushing and generally perpendicular to the plane defined by the master tumbler. In the configuration shown, the actuation attachment portion is attached to the user maniuplatable structure (a knob in the embodiment shown) by extending thereinto and being secured by a fastener or the like. As such, the distal end (and a portion extending inwardly therefrom toward the proximal end) includes flattened regions (which have a generally square cross-sectional configuration) so as to fit within the opening of the knob (which is likewise a matching configuration). Indeed, in other configurations, the actuation attachment portion may have a different structure, and may matingly engage with a knob or a lever or the like through a different mechanism that forms the user maniuplatable structure which performs the action of moving the lock cylinder body, either directly or indirectly. Again, however, the actuation attachment portion facilitates the attachment of the lock driver to the user actuatable knob, lever, or other structure to facilitate the turning of the lock driver about its axis of rotation. 
     The adapter structure  504  is shown in  FIGS. 7A and 7B  as comprising interface  536  that extends outwardly from the back end  512  of the lock cylinder body  500 . The adapter structure interfaces with the existing lock structure that extends from the bushing and which provides the latching, or locking with the cabinet or other structure with which the lock is associated. It will be understood that different locks have different interface structures. The particular interface structure shown in the  FIGS. 7A and 7B  comprises a offset cylindrical component. It will be understood that the interface  536  is configured to couple with another structure that is positioned adjacent thereto. 
     In other configurations, the same principles may be applied to other lock structures. For example, a slightly differently dimensioned lock driver is shown in FIGS.  7 C 1  through  7 C 4  wherein the shape of the lock cylinder body is slightly different, and the slot  235  is wider and slightly offset as compared to that of  FIGS. 7A and 7B . In the configuration of  FIG. 7D , the master tumbler is replaced with a wider master tumbler that is offset to one side. In the configuration of  FIG. 7E , the configuration is much like that of  FIG. 7D  relative to the lock cylinder body, while the adapter structure  504  comprises a generally centrally located elongated five sided structure which matingly engages with another structure in the lock beyond the bushing. In the configuration of  FIG. 7F , wherein the adapter structure is changed to an inverted horseshoe configuration. In the configuration of  FIG. 7G , the adapter structure is changed a six sided configuration. Each of these different configurations utilize the same basic lock driver having different structures for the slot, the master tumbler, and the adapter structure. The different structures are utilized in association with different locks and different legacy equipment. 
     In still other configurations, such as the configuration of  FIG. 7H , in addition to the structures that are common to the other figures, a number of indentations are found on the lock cylinder body  500 . Among other features, a portion of the lock cylinder body includes a cutaway portion  540  which removes a portion of the body and the back end. Additionally, such a configuration further includes a plurality of depressions  540  in the outside surface. In the configuration shown, a total of four axially displaced depressions  540  are shown in a side by side configuration and extending about the circumference of the lock cylinder body. It will be understood that these features cooperate with features of the existing lock assembly or the existing bushing assembly by corresponding in configuration to the lock cylinder of some legacy locks. It will be understood that the depressions, in many configurations are utilized to align with existing bushings so as to limit the rotation of the lock driver to a particular range of rotation (such as 90°, 180°, or some other angular displacement). 
     In still other configurations, such as the configuration shown in  FIGS. 7I and 7J , the lock driver my include depressions  542  that extend into the outer surface along the lock cylinder body  500 . In addition spaced apart flanges and the like, such as flange  544  may be disposed in a spaced apart orientation from the lock cylinder body and either may form an extended portion of the lock cylinder body or may be positioned along the actuation attachment portion between the proximal and distal end thereof. Additionally, such a configuration does not include a master tumbler or the associated slots in the lock cylinder body. The function of being axially limited in movement relative to the existing bushing or other structure is achieved by the interface of the flanges  544  with the existing bushing, either directly or indirectly. In some configurations, such axial movement preclusion is further facilitated by the cutaway portions or the depressions along the lock cylinder body. 
     Additionally, in such a configuration, the adapter structure  504  may comprise an inwardly directed interface  536  which extends into the back end of the lock cylinder body  500 . In such a configuration, the structure with which the adapter structure is to interface includes a projection which is directed into the interface  536  which is defined into the lock cylinder body. A different configuration of the interface  536  is shown in each of  FIGS. 7I and 7J , wherein in  FIG. 7I , the interface comprises a generally larger square having a wider slot that extends from opposing sides thereof. In the interface of  FIG. 7J , the interface comprises an elongated elliptically shaped slot. 
     Another configuration of the lock driver  72  is shown in FIG.  7 K 4  for use in a lock such as the lock shown in FIGS.  7 K 1  through  7 K 3 . In such a configuration, the lock cylinder body is movable in an inward and outward fashion. When pushed inwardly, and as will be explained below, the adapter structure  504  contacts and inwardly moves the locking flange  76  to selectively move the locking flange into the bushing so that it no longer forms a physical limitation or blocking member to opening the volume that is to be protected. 
     As such, in the configuration shown, the outer surface  514  maintains the lock cylinder within the bushing, with the slot  235   a  interfacing with the maser pin member  231   a . The combination of the slot  235   a  with the master pin member  231   a  controls the path that the lock driver takes in its inward and outward motion. Additionally, the structures define the inward and outward movement limits of the lock driver, precluding movement too far inward, and precluding removal of the lock driver from the lock in the opposite direction. 
     Additionally, in such a configuration, the actuator attachment portion and the knob  70  are integrally formed in such a configuration. As the lock driver can be inserted through the front opening of the housing, and is maintained from removal by the master pin member  231   a , the knob  70  can be integrally formed. Of course, the knob may be a separate member. It will be understood that the enlarged knob portion creates a lip against which the latch  102  can interface to selectively preclude or allow the inward and outward movement of the lock driver  72 . When in the locked configuration, the latch  102  precludes inward movement (with the interface between the slot  235   a  and the pin member  231   a  controlling the outward movement), thereby precluding the lock driver from interfacing with the locking flange  76 , and in turn, moving the locking flange  76 . When in the unlocked configuration, the latch  102  does not limit the movement of the lock driver, and the lock driver can be moved inwardly, to, in turn, contact and move the locking flange out of the locking configuration. A spring  533  or the like may be utilized to bias the knob in the outward direction. 
     It will be understood that the  FIGS. 7A  through  7 K 4  are merely exemplary and variations are contemplated with the configuration of the lock cylinder body  500 , the actuation attachment portion  502  and the adapter structure  504  so that the body interfaces with an existing or desired bushing, the actuation attachment portion attaches to the user rotatable pivotable, pushable or otherwise maniuplatable knob, handle, lever or other structure, and the adapter structure interfaces with a lever, cam or other structure that is present in the overall lock and that generally forms the blocking structure that precludes relative movement of different portions of the volume that is to be secured. 
     The lock spacer  74  is positionable along the lock driver and couples to the furniture bushing  77  while allowing adjustment to compensate for slight variations in the depth of the furniture bushing. The lock spacer includes a tumbler flange which is configured to engage the furniture bushing to allow relative rotative movement while precluding axial movement of the lock relative to the furniture bushing. More particularly, the spacer flange serves to fit into the grooves in the bushing that will interlock into the flange and into the grooves in the housing. With such a configuration, in the event that someone applies a force to the external housing, the force will be transferred from the housing to the spacer and to the furniture bushing, but not to the lock driver, therefore maintaining the security of the lock. This is due to the free rotation of the spacer around the driver. Additionally, the spacer precludes radial movement. 
     Referring now to  FIGS. 12A, 12B, 13A and 13B , the latching assembly  16  is shown as comprising latch  102 , blocker  104 , cam  106  and motor  108 . It will be understood that  FIGS. 12A and 12B  show the blocker in the locked position, and, the  FIGS. 13A and 13B  show the blocker in the unlocked position. The latch  102  includes proximal end  110  and distal end  112 . The latch  102  is positioned within the latch channel  40  and is slidably movable therewithin. In the locked position, which is shown in  FIGS. 12A and 12B , and as will be explained, the distal end  112  of the latch  102  extends into the axial notch  84  of the knob  70 . The proximal end  110  is configured to interface with the blocker  104 . With further reference to  FIG. 14  a biasing member, in the form of a compression spring  114  extends between the latch and the housing assembly so as to bias the distal end of the latch toward and into the knob  70 . Additionally, a flag or flange  115  extends transversely from the latch. As will be explained, the flag  115  interfaces with a position sensor and provides to the position sensor the orientation and position of the latch. In other embodiments, other mechanism may be utilized for monitoring the position of the latch and/or knob, such as, for example, detecting directly the position of the knob. 
     With reference to  FIGS. 15 and 16 , the blocker  104  is shown as comprising first cam profile  120 , second cam profile  122 , latch engagement body  124 . The latch engagement body  124  is positioned at a second end  128  of the blocker  104 . The first cam profile  120  extends between the first end  126  and the latch engagement body  124 . Similarly the second cam profile  122  extends between the first end  126  and the latch engagement body  124  in a generally parallel and spaced apart orientation from the first cam profile. The spaced apart orientation of the two cam profiles defines a longitudinal channel therebetween. It will be understood that the cam body rotatably extends through the longitudinal channel as the followers thereof interact with the first and second cam profiles. 
     The first cam profile  120  includes first slot  150 , second slot  152 , and third slot  154 . A first ridge  151  is defined between the first slot  150  and the second slot  152 . A second ridge  153  is defined between the second slot  152  and the third slot  154 . In the embodiment shown, the first slot  150  is formed on the outside of the first ridge  151 , however, provides a single sided slot function. The second cam profile  122  includes first ramp  156 , second ramp  158  and peak  159  positioned therebetween. 
     In the embodiment shown, the blocker comprises a metal member, such as zinc or the like. Of course, other materials are contemplated. It will be understood that the blocker is the component that precludes latch movement in the event that the knob is attempted to be rotated in the locked position so as to defeat the lock. As such, the latch engagement body  124  may comprise a solid member that provides the necessary strength to overcome the forces that may be exerted against the knob and, in turn, the latch. 
     With reference to  FIGS. 17 and 18 , the cam  106  includes a body having a first side  136  and a second side  138 , and, an axis of rotation  134 . The first side includes first follower  130  and the second side includes second follower  132 . With reference to  FIGS. 12B and 13B , the cam is rotatably coupled to the motor  108  about axle  142 . It will be understood that the motor is positioned within the motor retaining region with the axle extending into the blocker channel. With continued reference to  FIGS. 12A, 12B, 13A and 13B , the cam  106  is positioned so that the body is within the longitudinal channel between the first and second cam profiles, the first follower  130  is configured to interface with the first cam profile  120  and the second follower  132  is configured to interface with the second cam profile  122 . As can be seen in  FIGS. 19A through 19E , sequentially, and as will be explained below in greater detail, as the motor rotates the cam  106 , the cam  106  intermittently connects the first follower with the first cam profile, to, in turn, translate the blocker within the blocker channel. 
     It is contemplated that other cam profiles and other cam follower configurations may be utilized to achieve the intermittent interaction therebetween, to, translate the blocker along the blocker channel between a blocking position and a released position. It is further contemplated that the position of the two cam profiles can be swapped. Additionally, the blocker may have a alternate configurations for the first cam profile or the second cam profile. For example, additional slots may be presented, and corresponding ridges to increase the stroke of the blocker movement through additional rotation and interaction with the cam, if necessary. 
     Referring now to  FIGS. 20 and 21 , the electronic control assembly  18  includes electronic PC board  170 , input device  172 , and latch position sensor  174 . The PC board  170  includes the logic necessary to understand and process the signals coming from the input device  172  and the latch position sensor  174 , so as to appropriately direct the actuation and direction of the motor  108 . The configuration and design of such PC boards to achieve the desired functions set forth below are known to those of skill in the art. The input device  172  may comprise a keypad having a plurality of keys (in the embodiment shown, a total of five sequentially numbered keys). The input device  172  further includes a receiver for receipt of wireless signals (i.e., IR, RF, Bluetooth, zigbee, among others). More specifically, the keypad comprises an outer surface that has a thin-film metallic and polyester or polycarbonate surface configuration to resist damage and wear over the course of millions of cycles, and to provide resistance to solvents and chemicals, as well as to deter static charges (due to the relatively high dielectric strength). The combination of metallic and polyester properties on the outer surface can be provided by application of a metallic silver mirror ink on a polyester film to provide a low gloss look, textured surface with resistance to impact, scratching, scuffing, dents, ultraviolet light, and fingerprinting. Since the metallic surface is relatively thin (i.e., 150-200 micron) it may be applied by a printing process, and thus the keypad and the lock would be light-weight. The application of the metallic ink can be in a brushed or grain look running north-south or east-west. Below the outer surface a plurality of metallic conductive domes and conductive pads are provided to create the switch function. 
     The latch position sensor  174  is positioned in an orientation that is in a close relationship with position flange  115  ( FIG. 12B ) such that the sensor can determine the orientation and position of the latch relative to the housing assembly (and, as such, the knob). It is contemplated that the sensor is positioned on the PC board. The PC board is configured to reside within the main body cavity of the housing assembly. 
     It will further be understood that a position sensor can be configured to sense the position of the latch, which in turn, provides indirect feedback to detect at least two positions of the knob. Alternatively, a sensor can also detect one or more flags directly on the knob to detect at least two positions on the knob. The position sensor, it is contemplated may be of the optical type. To prolong the life of the battery, it is contemplated that the sensor intermittently detects the position and a change in position (i.e., a few milli-seconds every 1-2 second period). Of course, the sensor can be configured for a different intermittent interval, or may be configured for a continuous or generally continuous sensing. 
     In operation of the preferred embodiment, the lock is disposed in an operational environment, such as, for example, a desk. The housing assembly may be coupled to the furniture through any number of different means. It is contemplated that a double stick tape may be utilized on the cover  47  or fasteners may be extended through the furniture (or other structure in a different use) and into a corresponding bore of the housing assembly. In other embodiments, both double stick tape and threaded fasteners may be utilized. In addition, other means by which to couple the lock are contemplated. It will further be understood that the housing assembly can be mounted in any number of different orientations relative to the furniture bushing. For example, and as is shown in  FIGS. 22A through 22D , the housing assembly may extend to the right or left, or vertically upward or downwardly. Other orientations (i.e., angular) are likewise contemplated. 
     Initially, with reference to  FIGS. 12A and 12B , portions of the lock are shown in the locked configuration. In such a configuration, the blocker is in the blocking position, at the locked end of the blocker channel. The latch  102  is positioned within the latch channel with the distal end  112  of the latch  102  biased by the biasing member  114  into the axial notch  84  of the knob  70 . The latch is precluded from slidable movement within the latch channel  40 , as the blocker is positioned so as to extend through the latch channel and limiting the slidable movement of the latch within the latch channel. In some embodiments, the proximal end  110  of the latch  102  abuts the latch engagement body  124 . In other embodiments, the biasing member  114  maintains a small separation between the latch and the blocker. Regardless of the interface, the blocker precludes the movement of the latch so that the distal end of the latch remains within the axial notch  84 . 
     Additionally, in the locked configuration, the cam  106  is rotated such that the first follower  130  engages the first cam profile at the first slot  150 . At the same time, the second follower engages the first ramp  156 . Such a configuration is also shown at  FIG. 19A  with respect to the motor, cam and blocker. As will be explained below, the sequence of moving the blocker from a locked position to an unlocked position is achieved through rotation of the cam through approximately one and one half revolutions (although variations are contemplated which require lesser or greater revolutions of the cam and the motor. 
     To unlock the lock so that the locking flange  76  can be rotated, the user must direct the PC board to initiate an unlocking procedure. In one embodiment, a particular code or combination of keys is depressed in a particular combination to provide the necessary authorization to the electronic control assembly. In other embodiments, a wireless signal may be sent to the PC board via the input device  172 . Regardless of the method of communicating the proper combination or code for initiating the unlocking procedure, once the procedure is initiated, the position of the latch is determined through sensor  174 , and the motor is actuated. 
     When the motor is actuated in a first direction, the cam  106  rotates in a first direction disengaging the first follower  130  from the first slot  150  ( FIGS. 19A and 19B ), the motor continues to rotate, and the first follower  130  eventually enters into the second slot  152  ( FIG. 19B ). Eventually, the continued rotation of the cam  106  with the first follower  130  positioned in the second slot  152  begins to translate the blocker  104  along the blocker channel  42  ( FIGS. 19C and 19D ). It will be understood that, advantageously, the cam  106  rotates through an arcuate distance prior to engaging the first cam profile with force being directed upon the blocker in a translating direction. In the embodiment shown, the cam  106  rotates through about a half turn prior to initiating the translation of the blocker. Advantageously, the motor is allowed to initiate rotation without load, such that momentum can be built up, which momentum is sufficient to initiate translation of the blocker. Such a momentum building, relatively load free, initiating step removes the need to utilize a gear train to reduce the speed of the cam or to increase the torque applied by the cam. Rather, a direct drive of the cam by the motor (which greatly simplifies the construction) can be utilized. 
     As the rotation of the cam  106  continues, eventually, the blocker continues to translate due to the interaction of the first follower  130  within the second slot  152  of the first cam profile. Eventually, the first follower  130  reaches a point, as does the blocker  104  wherein the first follower  130  no longer exerts a force on the blocker  104  to translate further ( FIG. 19D ). Shortly thereafter, the first follower  130  exits from the second slot  152  and continued rotation directs the first follower  130  into the second slot. When the first follower  130  is fully inserted into the second slot, further movement is precluded ( FIG. 19E ). The PC board senses that the first follower is in such a position (i.e., through a sensing of the draw of the motor, or through other means, such as a sensor or the like). The PC board then directs the motor to cease rotation. In another embodiment, a timer can trigger the motor circuit to de-energize the motor. It will also be understood that the cam follower  132  interacts with the second cam profile, and the ramps in order to retain the blocker in proper alignment with slots  152 ,  154 , when the follower is outside of the slots  152 ,  154 , and also prior to entry into these slots. 
     The blocker is now in the unlocked orientation shown in  FIGS. 13A and 13B . That is, the blocker is moved out of the path of the latch channel, and the latch can be slidably moved within the latch channel. The engagement of the cam  106  with the third slot  154  and the interaction of the second follower  132  with the second cam profile, maintains the blocker in the unlocked configuration. 
     In such a configuration, and with reference to  FIG. 13A ?, the user can initiate rotation of the knob  70  to move the locking flange into an unlocked position. As the user initiates rotation of the knob  70 , the first surface  83  or the second surface  85  (depending on the direction of rotation being clockwise or counterclockwise) imparts a force on the distal end  112  of the latch  102 . The two surfaces are angled such that the imparting of force includes a force component in the longitudinal direction of the latch  102 . In turn, the continued rotation of the knob pushes the latch  102  out of the axial notch, overcoming the biasing means. There is no blocker to preclude the slidable movement of the latch, and, as such, the knob can force the latch out of the way so that the latch does not preclude movement of the knob. As the knob is further turned, unimpeded, the locking flange can be moved into an unlocked position. 
     Due to the biasing member  114 , the distal end  112  of the latch  102  is directed toward the knob. In the unlocked condition, the distal end of the latch remains in contact with the dependent skirt  82  of the knob  70 . At the same time, the blocker  104  is maintained by the cam  106  in the unlocked position to preclude interference with or impeding of the latch. 
     To relock the lock, the user turns the knob back so as to direct the lock flange  76  into the locked position. Eventually, the knob is returned to an orientation wherein the axial notch  84  of the knob aligns with the latch  102 , and the distal end of the latch extends into the axial notch  84 . In the embodiment shown, the position sensor  174  ( FIG. 24 ) in cooperation with position flange  115  senses the position of the latch within the axial notch. In such an orientation, the latch has traveled toward the knob such that the distal end thereof is outside of the blocker channel  42 . 
     Next, the motor is activated again, by the electronic control  18 , in the opposite direction from the direction of rotation during unlocking. The steps shown in  FIGS. 19A through 19E  are carried out in reverse. Namely, the cam  106  is rotated by the motor, and the first follower  130  exits the third slot, extends over the second ridge  153  and enters the second slot  152  ( FIGS. 19E and 19D ). Continued rotation imparts a force upon the blocker having a component in the direction of the locked position and the blocker slidably moves toward the locked position along the blocker channel ( FIG. 19C ). Eventually, the blocker reaches a translated position wherein the cam  106  no longer slidably moves the blocker ( FIG. 19B ). In such a position, further rotation of the cam  106  directs the first follower  130  to exit the second slot, traverse over the first ridge  153  and returns to first slot  150  ( FIG. 19A ). 
     Similar to that which was explained above with respect to the unlocking procedure, during the locking procedure, the cam  106  rotates an arcuate distance without the first follower  130  imparting a force on the first cam profile of the blocker. As such, the cam can gather speed, and in turn, momentum, such that when the cam enters the second slot  152 , the cam has sufficient force to impart onto the blocker to translate the blocker. Such an intermittent contact with the first cam profile, and intermittent application of a translational force allows for the use of a directly driven cam, and a motor smaller than would otherwise be required. Furthermore, the consumption of power from the battery is reduced for each cycle as compared to a rack and pinion with constant engagement and application of force therebetween. 
     Once in the first slot  150 , the cam  106  is precluded from rotation as the blocker has reached the locked position (i.e., the end of travel of the blocker along the blocking channel). Thus, while rotation is precluded, the motor continues to impart a rotational force on the cam  106 , thereby increasing the power draw. The electronic control  18  realizes the increased power draw by the motor as a signal that the blocker has returned to the locked position. In turn, the power to the motor ceases. 
     In this position, the blocker  104  is in a position that precludes slidable movement of the latch sufficient to move the latch out of the axial notch  84  to allow rotation of the knob  70 . Any rotation of the knob by the user will translate to translative movement of the latch into contact with the blocker which will stop the movement of the latch while the distal end remains in the axial notch  84 . 
     It will be understood that the electronic control  18  may be programmed in any number of different manners. In addition to the operation above, other operation configurations are contemplated. For example, in a setting such as a locker room, it is desirable for each user of a locker to be able to input his or her own code for each use. As such, while the mechanical locking and unlocking steps are the same as disclosed above, the blocker movement is initiated by differing conditions. 
     More particularly, initially, the locker may be closed and the lock flange may be in the locked configuration. However, the blocker may be in the unlocked position, thereby allowing the rotation of the knob  70 . Once the knob  70  is rotated and the lock flange  76  is in the unlocked position, the latch is driven out of the axial notch and the position sensor  174  senses that the latch has been moved out of the axial notch. At such time, the operation may direct the user to input a new unlocking key sequence on the keypad of the input device. This input sets the code for the operation of the lock through the next cycle. Once the code is input, the electronic control is programmed to execute the locking procedure the next time that the knob is rotated into a locked position and the latch is biased into the axial notch  84 . More specifically, the motor is activated and through the cam  106 , the blocker is translated into the locked position. 
     To re-unlock the lock, the user must provide the authorization through an unlock code (or another code to over-ride the communication to the electronic control). Once the code is provided, the motor is activated in the other direction, translating the blocker to the unlocked position. At the same time, the electronic control is ready for another cycle. That is, the electronic control is ready to receive a new code from the user through the input device. As such, a new code is applied each time the lock cycles between the locked and unlocked configuration. 
     It may, from time to time, be necessary to service the lock. To service the lock the knob is first removed from the housing assembly. As explained above, a set screw or multiple set screws, maintain the engagement of the knob  70  and the lock driver  72 . The set screw is accessible through the opening on the second end of the housing, but only when the knob  70  is in a particular rotative position to line up the set screw with the opening. It will be understood that, to preclude access to the set screw, except when the blocker is in the unlocked position, the opening and the set screw are not in alignment when the knob is in the locked condition. 
     As can be seen in the figures, the lock is configured to extend through a bushing (also referred to as a shell) held by a cabinet or enclosure (not shown). The actuatable lock assembly is configured can be connected and disconnected from the bushing. Advantageously, a portion of the actuatable lock assembly is within the cabinet or enclosure with a portion of the actuatable lock assembly outside of the cabinet or enclosure, when coupled to the bushing. The latching assembly as discussed above is positioned within a housing assembly. The housing assembly extends along the outside of the cabinet or enclosure. 
     The actuatable lock assembly includes a longitudinal axis that generally corresponds to the axis of rotation thereof (although not required). The housing assembly likewise includes a longitudinal axis. The longitudinal axis of the actuatable lock assembly is substantially perpendicular to the longitudinal axis of the housing assembly. 
     In the embodiment shown in  FIGS. 23 and 24 , a key override can be provided to over-ride the electronic locking function. In such an embodiment, a lock core controlled by a mechanical key can be integrated into the actuatable lock assembly  14 . Such a configuration allows the lock to be unlocked even if the blocker is in the locked position, precluding slidable movement of the latch along the latch channel. Insertion and turning of the mechanical key in the lock core allows the tumblers in the lock core to retract and allow the core to rotate. The lock flange rotates with the key while the knob remains in its locked configuration, due to the latch and blocker position. In a related embodiment, the rotating of the lock core causes movement to the blocker so that the latch can be freely moved out of the axial notch of the knob to allow functional rotation of the knob. It is also contemplated that a mechanical key over-ride mechanism could be rotated in order to move the latch relative to the channel, and/or out of engagement with the knob, or to move the blocker out of the channel of the latch. 
     Referring now to  FIGS. 25 and 26 , a graph is shown of the current waveform of the motor  108  during operation. In particular,  FIG. 25  shows the current waveform to accomplish the translation of the blocker from the locked position to the unlocked position. The current waveform has multiple slopes of increasing and decreasing current through the translation of the blocker. First, when the motor is initiated, there is an inrush of current, to overcome the inertia and to begin rotation. Next, the current decreases as the cam  106  continues to rotate and accelerate from a resting position to a position where the first follower reaches the second slot  152 . As the continued rotation initiates translation of the blocker, the current decreases abruptly. The current begins another increasing slope as the blocker translates across to the unlocked position. As the rotation of the cam continues, the first follower  130  exits the second ramp, causing a quick drop in current draw, with the current draw entering another increasing slope as the speed of the cam increases without resistance toward and into the third slot  154 . Finally, as the first follower reaches the end of the third slot  154 , the current drops to a to a steady draw in an effort to cause further rotation (i.e., substantially flatlines). It is the sensing of this relatively steady current draw that signals to the electronic control assembly that the blocker has reached the unlocked configuration. 
     The opposite is shown in  FIG. 26 , wherein a waveform for the motor is shown for a locking operation. In particular, the waveform is inverted, and transitions through the same regions (although, as the motor operates in the opposite direction, the current is in the opposite direction). Again, when the end of travel is reached, the current reaches a substantially steady draw which triggers the electronic control assembly to cease rotation of the motor, as the blocker has reached the locked configuration. The two  FIGS. 25 and 26  show the intermittent nature of the contact between the blocker and the cam, thereby showing how the overall use of power is not continuous, but that it varies throughout the cycle. While variations in the actual current draw will be seen depending on a number of variables, the general configuration of a spike when movement of the cam is initiated, followed by a sloped change of increased current draw during rotation of the cam without coacting with the blocker to effectuate translation of the blocker, followed by a drop in current draw when contact is made with the blocker and force is imparted upon the blocker to translate across the blocker channel, followed by another drop in current draw when the blocker reaches the end of translation, and the first follower is free to rotate without imparting force upon the blocker, followed by an increase in current draw as the cam accelerates, finally followed by a drop and a flatline when the end of rotation of the cam is reached with the first follower positioned at the end of the final slot (slot  150  when reaching the locked orientation and slot  154  when reaching the unlocked configuration). 
     It will be understood that variations to the structure of the latching assembly are contemplated. For example, and with reference to  FIGS. 27A and 27B , a variation is contemplated wherein the operation of the blocker remains the same in that the blocker translates within a blocker channel. However, the latch rotates about an axis of rotation that is positioned between the proximal and distal ends. The axis of rotation is further substantially parallel to the blocker channel, and spaced apart therefrom. The knob in such an embodiment has a downwardly opening notch in the dependent skirt which interfaces with the distal end of the latch. 
     In the locked configuration, the latch is biased so that the distal end is rotated about the axis of rotation into the downwardly opening notch. The blocker extends over the proximal end of the latch precluding rotation about the axis of rotation, thereby maintaining the latch in the downwardly opening notch. When the blocker is moved to an unlocked position, the blocker is spaced apart from the latch, and the latch is free to be rotated about the axis of rotation. Thus, when the knob is rotated, the shape of the downwardly opening notch imparts a downward force upon the latch driving the latch out of the notch and allowing free rotation of the knob. The opposite sequence is performed to again return the blocker to the locked position. 
     With the embodiment of  FIGS. 28A and 28B , a rotationally movable blocker is contemplated. In such an embodiment, the rotational blocker includes a first cam profile within a cavity of the blocker, and a lobe extending on an outer surface thereof. The lobe interfaces with the proximal end of the latch. The cam  106  is positioned within the cavity of the blocker so that rotation of the motor interfaces the first follower of the cam with the first cam profile of the blocker. As such, when rotated in a first direction, the first cam follower freely rotates relative to the blocker until the first stop is reached. At such time, continued rotation of the first cam follower rotates the blocker, as shown in  FIG. 28B . The rotation of the blocker, eventually moves the blocker out of the way of the latch. The latch is then free to slidably move within a latch channel. 
     To return the device to the locked orientation, the cam  106  is rotated in the opposite direction relative to the blocker until the second stop is reached. When the second stop is reached, the continued rotation of the cam by the motor rotates the blocker, returning the blocker into a position that interfaces with the proximal end of the latch. As such, the blocker precludes slidable movement, which, in turn, precludes rotation of the knob that interfaces with the distal end of the latch. 
     In yet another embodiment, shown in  FIGS. 29A through 29C , the blocker function and the latch function can be integrated into a single element. That is, the distal end of the latch can be configured to include the first cam profile and the second cam profile that was on the blocker. The cam profiles are in the direction of translation of the latch, as opposed to being perpendicular thereto in the other embodiments. The cam and the motor are rotated so that the cam can interface with the first and second cam profiles. In turn, actuation of the motor directly moves the latch. 
     The foregoing description merely explains and illustrates the invention and the invention is not limited thereto except insofar as the appended claims are so limited, as those skilled in the art who have the disclosure before them will be able to make modifications without departing from the scope of the invention.