Abstract:
An enclosure suitable for housing computer equipment for which controlled access is desirable. The enclosure has at least one, preferably two, enclosure doors secured by securing assemblies selected from a group consisting of a lock cylinder assembly, an electronic lock assembly, a quarter-turn latch assembly, a compression latch assembly, a folding T latch assembly, a lift and turn compression latch assembly, a pawl/cam action latch assembly, a multi-point latch assembly and a bolt assembly for securing to a rotary latch. Each securing assembly is secured to a mounting plate so that the respective securing assemblies may be easily exchanged within a standardized opening in the respective enclosure doors.

Description:
RELATED APPLICATIONS  
       [0001]    The present application claims priority to pending U.S. patent application Ser. No. 10/256,541 for LOCK ASSEMBLY HAVING SECURE ENGAGEMENT PLATE filed Sep. 26, 2002, which claims priority to U.S. Provisional Patent Application Serial No. 60/325,431 for LOCK ASSEMBLY HAVING SECURE ENGAGEMENT PLATE filed Sep. 26, 2001. 
     
    
     
       FIELD OF THE INVENTION  
         [0002]    The present invention provides computer network equipment enclosures having a securing lock assembly including a mounting plate for securing the securing assembly to an enclosure door. The securing assembly is easily changed out by the owner when security needs require a different type of securing assembly. In preferred embodiments, the lock assembly includes components of an electronic lock, preferably including a Dallas™ chip, which enables the lock to monitor entry into the computer enclosure. The present invention also includes a plurality of gangable enclosures, linked together. In alternate embodiments, the enclosures can be co-location units, which may also be ganged together.  
         BACKGROUND OF THE INVENTION  
         [0003]    Locks to limit access to enclosures are well known in the art as are locks which monitor access to enclosures. Such locks are manufactured by a number of companies, most prominently Sargent &amp; Greenleaf Lock Manufacturer&#39;s, Inc., Nicholasville, Ky.; LaGard, Inc., Torrance, Calif. and Kaba Mas, Inc. of Lexington, Ky. These locks can limit access to the inside of an enclosure to individuals who have a specific entry code which they are required to enter when seeking access to the enclosure. The locks can also monitor and keep a record of which codes are used to obtain access to the enclosure and when such access is obtained. These types of locks are well known in the art.  
           [0004]    Unfortunately, from time to time the lock may need to be serviced or the owner of an enclosure may wish to upgrade from one lock to another. The installation of such a lock is time consuming and often requires an owner to request service from an outside service provider. In addition, original equipment manufacturers (OEM&#39;s) are also generally looking to simplify installation so that costs for labor can be reduced, thereby reducing the overall cost to the consumer of using the OEM&#39;s lock.  
           [0005]    In the Detailed Description of this application, a description is provided of an AUDITCON™ lock made by Kaba Mas, Inc., Lexington, Ky. The preferred embodiment of the present invention may include such a lock or such other lock that would provide similar security features.  
           [0006]    In the past, Mas-Hamilton and other lock manufacturers have provided their locks to manufacturers of enclosures, preferably enclosures used to enclose banking equipment, computer servers and other sensitive electronic equipment, to which owners of such equipment wish to limit access and document all such access. The Mas-Hamilton locks of this type limit access by providing an electronic lock or latch mechanism and document access that is granted. It will be appreciated that installation requires a fair amount of skilled labor and care. In addition to the difficulty associated with securing the locks, a further concern is the security provided by the locks when they are attached to an enclosure door. It may be possible to strike such a lock from the outside of the enclosure, that the outer portion and the inner portion of the lock assembly are disengaged from the enclosure door, allowing the enclosure to fall open.  
           [0007]    It will be appreciated from the foregoing, therefore, that prior art devices and methods of installing these devices present problems which are in need of solutions. It also will be appreciated that further enhancements of the security provided by such locks are needed. The present invention provides solutions for these and other problems.  
         SUMMARY OF THE INVENTION  
         [0008]    An enclosure suitable for use to house a data storage network, a telecommunications network or a data communications network is provided. The enclosure has at least four sides including a front side, a rear side, a first side and a second side opposite the first side and further includes a frame, the frame including upright mounting devices suitable for mounting equipment for use in the data storage network, telecommunications network or data communications network. The enclosure further includes an interior space defined in part by the four sides; wherein at least one of the four sides includes an enclosure door and an enclosure door opening through which the interior space is accessible when the enclosure door is in a first unsecured open position. The enclosure door has a securing assembly receiving opening capable of receiving a securing assembly, the enclosure door having a plurality of securing assembly receiving opening edges proximate the securing assembly receiving opening; the enclosure further comprising a first securing assembly secured to the enclosure door so that the enclosure door can be releasably secured in a second secured closed position when the enclosure door is closed and access to the interior space through the enclosure door opening is prevented. The first securing assembly including a securing mechanism selected from the group consisting of a lock cylinder, an electronic lock, a quarter turn latch, a compression latch, a folding T latch, a lift and turn compression latch, a pawl/cam action latch, a multi-point latch system and a bolt for securing to a rotary latch secured to the enclosure; and a standard mounting plate having an interior side and an exterior side. The securing mechanism is secured to the interior side; wherein the first securing assembly is secured within the securing assembly receiving opening of the enclosure door by at least one interior mounting plate securing bracket secured to the interior side of the mounting plate and effectively gripping at least one of the plurality of securing assembly receiving opening edges proximate the securing assembly receiving opening, so that the first securing assembly is effectively secured to the first enclosure door; wherein the first securing assembly is easily exchanged with a second securing assembly by disengaging the first securing assembly from the securing assembly receiving opening and inserting the second securing assembly into the securing assembly receiving opening and securing the second securing assembly within the securing assembly receiving opening of the enclosure door with at least one interior mounting plate securing bracket secured to the interior side of the mounting plate and effectively gripping at least one of the plurality of securing assembly receiving opening edges proximate the securing assembly receiving opening, so that the second securing assembly is effectively secured to the first enclosure door. The second securing assembly includes a securing mechanism selected from the group consisting of a lock cylinder, an electronic lock, a quarter turn latch, a compression latch, a folding T latch, a lift and turn compression latch, a pawl/cam action latch, a multi-point latch system and a bolt for securing to a rotary latch secured to the enclosure; and a standard mounting plate having an interior side and an exterior side; the securing mechanism being secured to the interior side. In certain embodiments, the enclosure is a co-location enclosure or unit, having a plurality of doors to a plurality of communicating interior spaces. In alternate embodiments, the present invention includes a plurality of such enclosures, one or more of which may be a co-location unit.  
           [0009]    In a preferred embodiment the computer equipment enclosure suitable includes first and second enclosure doors, each of the enclosure doors having a securing assembly receiving opening capable of receiving a securing assembly, each enclosure door having a plurality of securing assembly receiving opening edges proximate the securing assembly receiving opening; the enclosure further including first and second securing assemblies secured to the first and second enclosure doors, respectively. The first and second securing assemblies each including a securing mechanism selected from the group consisting of a lock cylinder, an electronic lock, a quarter turn latch, a compression latch, a folding T latch, a lift and turn compression latch, a pawl/cam action latch, a multi-point latch system and a bolt for securing to a rotary latch secured to the enclosure; and a standard mounting plate having an interior side and an exterior side; each securing mechanism being secured to the respective interior side; wherein the first and second securing assemblies are secured within the respective securing assembly receiving opening of the respective enclosure door by at least one interior mounting plate securing bracket secured to the interior side of the respective mounting plate and effectively gripping at least one of the plurality of the respective securing assembly receiving opening edges proximate the securing assembly receiving opening of the respective enclosure door, so that each securing assembly is effectively secured to each respective enclosure door.  
           [0010]    The present invention also provides a method of securing a securing assembly to an enclosure door of a computer equipment enclosure. The method includes providing an enclosure having at least four sides including a front side, a rear side, a first side and a second side opposite the first side and further includes a frame, the frame including upright mounting devices suitable for mounting equipment for use in the data storage network, telecommunications network or data communications network. The enclosure further includes an interior space defined in part by the four sides; wherein at least one of the four sides includes an enclosure door and an enclosure door opening through which the interior space is accessible when the enclosure door is in a first unsecured open position. The enclosure door has a securing assembly receiving opening capable of receiving a securing assembly, the enclosure door having a plurality of securing assembly receiving opening edges proximate the securing assembly receiving opening; the enclosure further comprising a first securing assembly secured to the enclosure door so that the enclosure door can be releasably secured in a second secured closed position when the enclosure door is closed and access to the interior space through the enclosure door opening is prevented. The method further including creating a securing assembly receiving opening in the enclosure door, the securing assembly receiving opening having a plurality of securing assembly receiving opening edges proximate the securing assembly receiving opening; inserting a first securing assembly into and at least partially through the securing assembly receiving opening; the first securing assembly including a securing mechanism selected from the group consisting of a lock cylinder, an electronic lock, a quarter turn latch, a compression latch, a folding T latch, a lift and turn compression latch, a pawl/cam action latch, a multi-point latch system and a bolt for securing to a rotary latch secured to the enclosure; and a standard mounting plate having an interior side and an exterior side; the securing mechanism being secured to the interior side; wherein the first securing assembly is secured within the securing assembly receiving opening of the enclosure door by at least one interior mounting plate securing bracket secured to the interior side of the mounting plate and effectively gripping at least one of the plurality of securing assembly receiving opening edges proximate the securing assembly receiving opening, so that the first securing assembly is effectively secured to the first enclosure door; disengaging the first securing assembly from the securing assembly receiving opening; inserting a second securing assembly into the securing assembly receiving opening; wherein the second securing assembly includes: a securing mechanism selected from the group consisting of a lock cylinder, an electronic lock, a quarter turn latch, a compression latch, a folding T latch, a lift and turn compression latch, a pawl/cam action latch, a multi-point latch system and a bolt for securing to a rotary latch secured to the enclosure; and a standard mounting plate having an interior side and an exterior side; the securing mechanism being secured to the interior side; and securing the second securing assembly within the securing assembly receiving opening of the enclosure door with at least one interior mounting plate securing bracket secured to the interior side of the mounting plate and effectively gripping at least one of the plurality of securing assembly receiving opening edges proximate the securing assembly receiving opening, so that the second securing assembly is effectively secured to the first enclosure door.  
           [0011]    The present invention is alternately directed to an enclosure including and enclosure door having a lock assembly including a dial assembly or lock actuating assembly and a lock bolt or lock case assembly, which sandwich an engagement plate or a mounting plate to which each is secured to form the lock assembly. The mounting plate preferably includes a number of different functional parts which allow the respective assemblies to be secured to the mounting plate and also allow the mounting plate to permit the lock assembly to be secured within an opening within a door of an enclosure. The lock assembly is just one of a number of securing assemblies that can be substituted for one another with relative ease, giving the present invention a practical value to owners, that can easily substitute one securing assembly for another when the security requirements for an enclosure changes, requiring differing security parameters.  
           [0012]    In one preferred embodiment, the mounting plate includes a plurality of drilled and tapped holes, a plurality of Standoffs and a plurality of securing studs. In the further preferred embodiment, a lock assembly for attachment to an enclosure door is provided, comprising: a lock case assembly including a bolt having at least first and second positions; a lock actuating assembly interconnected with the lock case assembly such that the lock actuating assembly can actuate a change in the position of the bolt from the first position to the second position; and a mounting plate having an interior side and an exterior side; the lock actuating assembly being secured to the mounting plate on the exterior side and the lock case assembly being secured to the mounting plate on the interior side. The lock case assembly is preferably secured within a lock assembly receiving opening by at least one interior mounting plate securing bracket secured to the interior side of the mounting plate and effectively gripping an edge of a lock receiving opening in the enclosure door.  
           [0013]    In further preferred embodiments, the present invention provides an enclosure door having a lock assembly, including a mounting plate such as the mounting plate disclosed hereinabove, secured within a lock assembly receiving opening in the enclosure door.  
           [0014]    In a further preferred embodiment, the present invention provides a method for securing a lock assembly to an enclosure door, the method including creating an opening in the enclosure door, inserting the lock assembly in the opening and securing the lock assembly to the enclosure door.  
           [0015]    The lock assembly preferably includes a lock case assembly having a bolt that can be moved between at least two positions; a lock actuating assembly interconnected with the lock case assembly such that the lock actuating assembly can actuate a change in the position of the bolt from one position to the other; and a mounting plate having an interior side and an exterior side. The lock actuating assembly is secured to the mounting plate on the exterior side and the lock case assembly is secured to the mounting plate on the interior side. The lock assembly itself is secured within the lock assembly receiving opening of the enclosure door by an interior mounting plate securing bracket, preferably two such brackets, which are secured to the interior side of the mounting plate and effectively grip an edge or preferably edges of the enclosure door proximate the lock receiving opening so that the lock assembly is secured to the enclosure door.  
           [0016]    It is an object of the present invention to provide an enclosure for computer equipment that allows secure access. In preferred embodiments, access will be monitored by electronic locks that record information regarding access to the interior space within the enclosure.  
           [0017]    It is a further object to provide a series of securing assemblies including a standardized mounting plate for securing to a standardized opening in enclosure doors of the preferred enclosures. This allows a range of securing assemblies to be secured to each of the respective enclosure doors. In this way, the manufacturer may deliver the enclosure or enclosures to a purchaser with any type of securing assembly or with none at all. The purchaser may then determine which type of securing assembly is desirable to meet the purchaser&#39;s needs at any particular time. In this way, the enclosures have significant versatility and the type of securing assembly may be easily changed without the assistance of workers having mechanical skills other than relatively low-level assembly skills. It is envisioned that this versatility will provide significant cost savings to purchasers and greater satisfaction with the enclosures purchased in view of this projection cost savings. It will be appreciated that in certain situations simple securing assemblies may be suitable for a particular enclosure. In other situations, an electronic lock will be required. It will be appreciated that it is an object of the present invention to provide enclosures having easily interchangeable securing mechanisms.  
           [0018]    It is a further object of the present invention to provide an enclosure having two enclosure doors, the first of which includes an electronic lock and the second of which is secured in a closed position by a simple latch that can be released from the interior space of the enclosure, once the enclosure door secured by the electronic lock is opened, thereby reducing the need for a more substantial or, perhaps, more expensive, securing assembly on the second enclosure door.  
           [0019]    It will be appreciated that the enclosures of the present invention may have a variety of securing assemblies, each having a mounting plate which has standard features to allow the respective securing assemblies to be secured to a standardized securing assembly opening in the enclosure door or doors. In certain embodiments, a number of gangable enclosures will e ganged together as a series of computer equipment enclosure devices. In other embodiments, the enclosure may be a co-location enclosure device having a series of communicating or non-communicating interior spaces secured by separate enclosure doors. It will be appreciated that these co-location enclosure units may also be gangable and secured together in a series of enclosure units.  
           [0020]    It will be appreciated that the present lock assembly reduces the complexity of installation of locks of this type and reduces the expense associated with such installation and also reduces the amount of time and energy associated with such installation.  
           [0021]    It is a further object of the present invention, to provide a lock assembly which can be installed in a standard enclosure door in a straightforward and expeditious manner without disassembly of the lock assembly prior to installation. In the most preferred embodiment, the lock assembly is installed by placing the lock assembly within a lock assembly receiving opening created in the enclosure door and securing the lock assembly to the enclosure door by placing at least one, preferably two, interior mounting plate securing brackets over respective pairs of securing studs, securing the interior mounting plate securing brackets to the respective securing studs with stud securing nuts which are tightened such that the interior mounting plate securing brackets grip edges of the lock assembly receiving opening of the enclosure door.  
           [0022]    It is a further object of the present invention to provide a simplified electronic lock assembly which is easy to install, easy to remove for repair or enhancement and easy to reinstall or replace.  
           [0023]    It is a further object of the present invention to provide a system for enhanced security for enclosure doors by providing a mounting plate which secures the lock case assembly to the enclosure door even if the lock actuating assembly is destroyed or disengaged from the mounting plate.  
           [0024]    It is a further object of the present invention to provide a mounting plate which is specifically designed to secure the lock case assembly to the interior side of the mounting plate while the enclosure door is secured to the mounting plate on the interior side as well, thereby enhancing the security provided by the mounting plate, as well as the present lock assembly.  
           [0025]    It is a further object of the present invention to provide a kit including the mounting plate and other accessories, preferably an interior mounting plate securing brackets and a plurality of stud securing nuts for securing the mounting plate to an enclosure door having a lock assembly receiving opening suitable for mounting the present mounting plate.  
           [0026]    The above-described features and advantages along with various other advantages and features of novelty are pointed out with particularity in the claims annexed hereto and forming a part hereof. However, for a better understanding of the invention, its advantages and objects attained by its use, reference should be made to the drawings which form a further part hereof and to the accompanying descriptive matter, preferred embodiments of the present invention. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0027]    Referring now to the drawings, in which like reference numerals refer to equivalent elements in a series of embodiments of the present invention:  
         [0028]    [0028]FIG. 1 is a perspective view of a preferred lock assembly  2  of the present invention showing an exterior side  9   a  of a mounting plate  8  sandwiched between a lock actuating assembly  4  and a lock case assembly  6 ;  
         [0029]    [0029]FIG. 2 is a further perspective view of the lock assembly  2  shown in FIG. 1, but showing an interior side  9   b  of the mounting plate  8 ;  
         [0030]    [0030]FIG. 3 is an exploded perspective view of the lock assembly  2  shown in FIGS. 1 and 2 as it would come apart when secured within a lock assembly receiving opening  26  within an enclosure door  28 ;  
         [0031]    [0031]FIG. 4 is a side plan view of the lock assembly shown in FIGS. 1 and 2 from the inside  29  of the enclosure door  28  showing the outline of the mounting plate  8  and the outline of the lock assembly receiving opening  26  at least partially in phantom;  
         [0032]    [0032]FIG. 5 is a side elevation of the lock assembly  2  when engaged with the enclosure door  28  as seen from line  5 - 5  of FIG. 4;  
         [0033]    [0033]FIG. 6 is a partial cross-sectional view from the top of the lock assembly  2  shown in FIG. 4 as seen from the line  6 - 6  showing the enclosure door  28  and the mounting plate  8  in partial cross-section and wherein the lock actuating assembly  4  and the lock case or bolt case assembly  6  are shown in phantom;  
         [0034]    [0034]FIG. 7 is a to plan view of the mounting plate  8  showing the interior side  9   b;    
         [0035]    [0035]FIG. 8 is a right side elevation of the mounting plate  8 , shown in FIG. 7, showing one of the two standoffs  46  in partial cross-section and the tapped hole in the other standoff  46  in phantom;  
         [0036]    [0036]FIG. 9 is a photographic image showing a perspective view of a Cooper B-Line vertical cabinet or enclosure  102  having an electronic lock assembly  2  of the kind shown in FIGS.  1 - 6 , and also showing the electronic lock assembly  2  secured to the front door  104  of the enclosure  102  in the manner shown in FIGS.  3 - 6 ;  
         [0037]    [0037]FIG. 10 is a photographic image showing a perspective view of the Cooper B-Line vertical cabinet  102  shown in FIG. 10, but showing both the front enclosure door  104  and the rear enclosure door  106  in unsecured open positions;  
         [0038]    [0038]FIG. 11 is a photographic image showing a perspective view of an interior surface  107  of the front enclosure door  104  to which the lock assembly  2  is secured to the front enclosure door  104  of the enclosure  102  shown in FIGS. 9 and 10;  
         [0039]    [0039]FIG. 12 is a further photographic image showing a perspective view of the lock assembly when secured to the front enclosure door  104  of the enclosure  102  shown in FIGS. 9 and 10;  
         [0040]    [0040]FIG. 13 is a photographic image showing a further perspective view of the lock assembly  2  secured to the front enclosure door  104  of the enclosure  102  shown in FIGS. 9 and 10;  
         [0041]    [0041]FIG. 14 is a photographic image of the enclosure  102  shown in FIGS. 9 and 10, but shown from the rear of the enclosure  102  when the rear enclosure door  106  is in an unsecured, open position;  
         [0042]    [0042]FIG. 15 is a production drawing of an Eberhardt rotary latch assembly  114  secured to components of the enclosure  102  in such a manner that the rotary latch  115  grips a bolt assembly  116  to secure the rear enclosure door  106  in a secured closed position as shown;  
         [0043]    [0043]FIG. 16 is a photographic image showing a perspective view of the interior  122  of the enclosure  102  shown in FIGS. 9 and 10, showing an interior side wall  124  to which the rotary latch assembly  114  is secured;  
         [0044]    [0044]FIG. 17 is a photographic image showing an enlarged perspective view of a door release portion  126  of the rotary latch assembly  114  shown in FIGS. 15 and 16;  
         [0045]    [0045]FIG. 18 is a photographic image showing a perspective view of the rotary latch  115  shown in FIGS. 15 and 16; the rotary latch  115  is secured to a left side mounting plate  130  having an outwardly extending bracket  132  for securing the actuating wire  134  to the left side mounting plate  130  to insure effective operation of the rotary latch  115 ;  
         [0046]    [0046]FIG. 19 is a photographic image showing a side view of an alternate rotary latch  115 ′ attached to an alternate universal mounting plate  136  having an L-shaped bracket  138  for securing the actuating wire  134  to the universal mounting plate  136 ;  
         [0047]    [0047]FIG. 20 is a photographic image showing a perspective view of the rotary latch  115 ′ shown in FIG. 19 but showing the rotary latch  115 ′ secured to a bolt assembly  116  engaged with the rear enclosure door  106  such that the rear enclosure door  106  is in a secured closed position;  
         [0048]    [0048]FIG. 21 is a photographic image showing perspective views of a number of component parts of elements of the alternate rotary latch assembly  114 ′ shown in part in FIGS. 19 and 20, including perspective views of the alternate universal mounting plate  136 , the L-shaped bracket  138 , the alternate rotary latch  115 ′ and alternate bolt assembly mounting bracket  140  and a shoulder bolt  142  for securing to the alternate bolt assembly mounting bracket  140 ;  
         [0049]    [0049]FIG. 22 is a production drawing showing numerous views of the alternate bolt assembly mounting bracket  140 , plan views of an exterior  9 A′ and an interior  9 B′ of an alternate mounting plate  8 ′, along with a side view of the alternate bolt assembly mounting bracket  140  to which the shoulder bolt  142  is secured, when the alternate bolt assembly mounting bracket  140  is secured to the alternate mounting plate  8 ′ which is secured to a rear enclosure door  106 ′;  
         [0050]    [0050]FIG. 23A is a photographic image showing an interior surface  146  of the alternate mounting plate  8 ′ to which an alternate bolt assembly  116 ′ is secured for attachment to a rear enclosure door  106  of an enclosure  102  of the type shown in FIGS. 9 and 10 where the rear enclosure door pivots from right to left when it opens;  
         [0051]    [0051]FIG. 23B is a photographic image showing a further alternate bolt assembly  116 ″, similar to the bolt assembly  116 ′ shown in FIG. 23A, except that the alternate bolt assembly mounting bracket  140  is reversed so that the alternate bolt assembly  116 ″ can be used to secure an alternate rear enclosure door (not shown) which pivots from left to right when it goes from a secured closed position to an unsecured open position;  
         [0052]    [0052]FIG. 24 is a production drawing shown an alternate rotary latch assembly  114 ″;  
         [0053]    [0053]FIG. 25 is a photographic image showing perspective views of an alternate electronic lock assembly  2 ′, a lock cylinder securing assembly  150 , a locking T-handle securing assembly  152 , a wing knob quarter-turn latch securing assembly  155 , a standardized mounting plate  160 , a locking L-handle latch securing assembly  162 , a locking lift and turn compression latch securing assembly  164  and an alternate locking lift and turn compression latch assembly  164 ′;  
         [0054]    [0054]FIG. 26 is a photographic image showing a perspective view of the locking T-handle securing assembly  152  shown in FIG. 25;  
         [0055]    [0055]FIG. 27 is a photographic image showing a plan view of the standardized mounting plate  160  shown in FIG. 25;  
         [0056]    [0056]FIG. 28 is a photographic image showing a plan view of the lock cylinder securing assembly  150  shown in FIG. 25, except that the key (now shown) has been removed from the lock cylinder; and  
         [0057]    [0057]FIG. 29 is a photographic image showing a plan view of the lift and turn compression latch securing assembly  164  shown in FIG. 25. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT  
       [0058]    Referring now to FIGS. 1 and 2, the present invention provides a lock assembly  2  including a dial assembly or lock actuating assembly  4 , a lock case or bolt assembly  6  and a mounting plate  8 . The mounting plate has an exterior side  9   a , shown primarily in FIG. 1, and an interior side  9   b , shown primarily in FIG. 2.  
         [0059]    Referring now also to FIG. 3 which provides an exploded view of parts of the lock assembly  2  when secured to an enclosure door  28 , as shown in FIGS. 4 and 5, to which reference is also made at this time.  
         [0060]    The preferred lock assembly shown in FIGS.  1 - 5  includes a mounting plate  8  having a center hole  10  through which a spindle  12 , extending from the lock case assembly  6  can extend to become engaged within the lock actuating assembly. The preferred lock actuating assembly  4  and lock case assembly  6  are respective parts of an AUDITCON™ lock available from Kaba Mas, Inc., Lexington, Ky., such as the series 50R, 52R, 100R, 200R, 400R, 500R and 2100R series AUDITCON™ locks.  
         [0061]    Other locks may be substituted for the preferred lock. These locks include the V series, LP series, Vindication™ series, X08/X07 series, LC series and the like locks from Kaba Mas or Mas-Hamilton, the ComboGuard®, DelaGuard®, TimeDealy™, SafeGuard™, TwoBolt™, Privat®, SmartGuard™, DigiGuard®, LGAudit™, LGBasic™, LGCombo™, eCam®, MultiGuard™, VisionGuard™ and the like series from LeGard, and the Comptronic® 6120, 6121, 6123, 6124, 6125, 6140, 6150 and the like series from Sargent &amp; Greenleaf, along with any other similar two, or more, component lock systems from these or other access lock or other lock manufacturers.  
         [0062]    The preferred lock actuating assembly  4  includes a keypad  14 , which allows the user to enter an access code which, once entered, will cause the lock actuating assembly to actuate movement of a bolt  22  in the lock case assembly  6  by turning the spindle  12 . Mas-Hamilton also produces similar locks having a low profile housing (now shown) and a vertical lock housing (not shown). The Mas-Hamilton locks have two different modes of operation, an independent mode and a Supervisory/Subordinate mode. Within each operation mode, two access modes are available: Single User access and Dual User access. In Single User access, only one combination is required to open the lock. In Dual User access, two combinations must be correctly and consecutively entered to open the lock.  
         [0063]    Independent mode—When operating in Independent mode, only one (Single User access) or two (Dual User access) combinations are required to open the lock. In Dual User access, either combination can be entered first. However, you should not turn the dial or press Clear between combination entries.  
         [0064]    Supervisory/Subordinate mode (Super/Sub mode)—When operating in Super/Sub mode, a Supervisor must first enable lock access for Subordinate User(s) in order for them to be able to open the lock. In Single User access, two separate combinations are required to open the lock. A Supervisor combination followed by an assigned Supervisor ID must be entered first to enable lock access for a Subordinate User combination. The Subordinate User combination can be entered an unlimited number of times thereafter to open the lock. Once the Supervisor combination and the assigned Supervisor ID are re-entered to disable lock access for a Subordinate User, the Subordinate User combination will no longer open the lock.  
         [0065]    In Dual User access, three separate combinations are required to open the lock. A Supervisor combination followed by an assigned Supervisor ID must be entered first to enable lock access for two Subordinate User combinations. The Subordinate User combinations can be entered an unlimited number of times thereafter (and in any order) to open the lock. Once the Supervisor combination and the assigned Supervisor ID are re-entered to disable lock access for the Subordinate User(s), these Subordinate User combinations will no longer open the lock.  
         [0066]    There are four different types of classifications of personnel who can access the lock:  
         [0067]    Master User—The Master User performs the initial lock setup activities. There is a maximum of one Master User per lock. The Master User combination will not open the lock.  
         [0068]    Access User—In Independent mode, a user added by a Master User.  
         [0069]    Supervisor—In Supervisory/Subordinate mode, a user added by the Master User and who has the ability to add/delete other Subordinate users. The maximum number of Supervisors per lock varies according to lock model. A Supervisor cannot open the lock.  
         [0070]    Subordinate User—In Supervisor/Subordinate mode, a user who is added by and assigned to a Supervisor.  
         [0071]    Referring now also to FIG. 6, the preferred lock assembly  2  shown in FIG. 4 is shown as seen from line  6 - 6  of FIG. 4, showing the enclosure door  28  in partial cross-section and the lock actuating assembly  4  and the lock case assembly  6  in phantom. In FIG. 6, the tip  22   a  of the bolt  22  is shown in phantom once in a first position, A, where the tip is extended out away from the lock case assembly housing  7  and a second position, B, in which the tip  22   b  of the bolt  22  protrudes only slightly from the lock case assembly housing  7 . It is envisioned that the bolt  22  will engage a structure (not shown) associated with the enclosure (not shown) when the enclosure door  28 , preferably pivotally attached, is attached to the enclosure (not shown). In this way, the bolt  22  will provide a mechanism for engaging the enclosure structure (not shown) when it is in the first position in which the lock assembly  2  will engage the enclosure (not shown) to keep the enclosure door  28  in a secured and closed position (not shown).  
         [0072]    Referring now also to FIGS. 7 and 8, the mounting plate  8  of the present invention preferably has a shape similar to that shown in FIG. 7. In alternate embodiments, the shape of the mounting plate may vary, and the position of the various openings, holes or attachments to the mounting plate may be varied as well in order to accommodate a variety of lock actuating assemblies, lock case assemblies and the like. The main feature of the mounting plate  8 , however, is that it will provide a plate having an exterior side  9   a  and an interior side  9   b . the preferred mounting plate  8  includes four securing studs  42  attached to the interior surface  9   b . In the present application, the term “securing stud” means a protrusion extending away from the interior surface  9   b  of the mounting plate  8 , to which a securing bracket  64  may be secured. These securing studs  42  can be threaded studs, welded or weld studs, PEM® studs or the like. A securing bracket  64 , such as the interior mounting plate securing bracket  64 , see FIGS.  4 - 6 , can be secured to the securing studs, but other well known fastening systems can also be used. In preferred embodiments, the securing studs are threaded such that they accept stud securing nuts which screw onto the securing studs  42  to secure a securing bracket  64  which can grip an edge  27  of the lock assembly receiving opening  26  in the enclosure door  28 . In a preferred embodiment, the securing studs  42  are PEM® studs from Pem Fastening Systems, Danboro, Pa. that are pressed into drilled or drilled and tapped holes, stamped holes, or the like. Alternatively, the securing studs  42  are spot welded onto the interior surface of the mounting plate  8 .  
         [0073]    The mounting plate  8  also includes four T-nuts  46  or standoffs  46  having standoff receiving openings  44  in which standoff screws  52 , for securing the lock case assembly  6 , can be secured. In preferred embodiments, the lock assembly  2  includes a plurality of Standoff spacers  50  that are used to separate the lock case assembly  6  from the mounting plate  8  a sufficient distance to permit the standoff screw to bind the lock assembly standoff screws  52  to tightly secure the lock case assembly  6  to the mounting plate  8 . A washer  51  is also used to space the head  52   a  of the screw  52  away from an upper surface  6   a  of the lock assembly so that the standoff screw  52  effectively secures the lock assembly  6  to the mounting plate by engaging the threaded standoff receiving openings  44  in the standoffs  46 .  
         [0074]    The mounting plate also includes the center hole  10 , which allows the spindle  12  to pass through the mounting plate  8  from the lock case assembly  6  to the lock actuating assembly  4 . A wire harness  13  also passes through the mounting plate to connect the lock actuating assembly  4  electronically with the lock case assembly  6  so that the act of entering a recognized code into the keypad  14  of the lock actuating assembly is effective to permit the spindle  12  to turn within the lock case assembly  6  and move the bolt  22  from the first position  22   a  to the second position  22   b  (shown in FIG. 6 in phantom). The preferred mounting plate  8  also includes four drilled and tapped holes  47  which accept lock actuating assembly securing screws  48  which secure the lock actuating assembly  4  to the exterior surface  9   a  of the mounting plate  8 .  
         [0075]    The preferred electronic assembly  2  is assembled by displacing the keypad  14  from the lock actuating assembly  4  in order to secure the remaining housing for A to the exterior surface  9   a  of the mounting plate  8 . Lock actuating assembly securing screws  52  or standoff screws  52  are used to secure the lock actuating assembly housing  4   a  to drilled and tapped holes  47  in the mounting plate. The keypad  14  is then secured to the lock actuating assembly housing  4   a . The lock case or bolt assembly  6  is also secured to the mounting plate  8  using screws  52 . Four standoff screws  52  are used to secure the lock case assembly to the interior side of the mounting plate.  
         [0076]    The lock assembly  2  also includes two interior mounting plate securing brackets  64  which can be secured to the interior side  9   b  of the mounting plate  8  by a plurality of stud securing nuts  68  which can secure the interior mounting plate securing brackets  64  to the weld stud  42  in the manner shown in FIG. 2.  
         [0077]    To secure the lock assembly  2  to the enclosure door  28 , however, the interior mounting plate securing brackets  64  are preferably disengaged from the securing studs  42  and engaged with the enclosure door  28  within the lock assembly receiving opening  26 . To secure the lock assembly  2 , within the lock assembly receiving opening  26 , the interior mounting plate securing brackets  64  are placed over the securing studs  42  when the lock assembly  2  is in place in the enclosure door  28  within the lock assembly receiving opening  26 , thereby sandwiching edges  27  of the lock assembly receiving opening  26  between the mounting plate  8  and respective interior mounting plate securing brackets  64 . Stud securing nuts  68  are used to secure the interior mount plate securing brackets against the edges  27  of the locking assembly receiving opening so as to grip the enclosure door  28  between the interior mounting plate securing brackets  64 , respectively, and the mounting plate  8 .  
         [0078]    In a preferred embodiment, the present invention provides a kit including a mounting plate  8  of the present invention and two interior mounting plate securing brackets  64 . In preferred embodiments, the kit also includes stud securing nuts  68 , spacers  50  and standoff screws  52 .  
         [0079]    In a further, preferred embodiment of the present invention, a method of securing the lock assembly  2  to an enclosure door  28  is provided, including the steps of creating a lock assembly receiving opening  26  in the enclosure door  28 ; placing the lock assembly  2  within the lock assembly receiving opening  26  in the enclosure door  28 ; and securing the lock assembly  2  within the lock assembly receiving opening by securing at least one interior mounting plate securing bracket to the interior side  9   b  of the mounting plate  8  and sandwiching at least a portion of the enclosure door  28  between the interior mounting plate securing bracket and the mounting plate  8  in such a manner that the lock assembly  2  is functionally secured to the enclosure door  28 .  
         [0080]    The present lock assembly  2  has been designed to simplify the installation of a lock, preferably an AUDITCON™ lock available from Kaba Mas, Inc. Installation using the lock assembly  2 , requires the creation of a hole  26  in a door  28  to an enclosure (not shown), preferably a rectangular or square hole in certain embodiments, although the hole may vary in its configuration and size.  
         [0081]    It is an object of the present invention to provide an assembly  2  which preferably includes components of a lock such as the AUDITCON™ lock for incorporation into an enclosure door  28  to limit access to an interior (not shown) of an enclosure (not shown). It is a further object of the present invention to provide a quickly attached assembly  2  for such use.  
         [0082]    In order to install the preferred lock assembly  2  of the present invention in a computer enclosure (not shown), the enclosure door opening  26  is preferably provided in the enclosure door  28 . In preferred embodiments, the enclosure door opening  26  is a rectangular or, perhaps, square opening.  
         [0083]    The lock assembly  2  is secured to the enclosure door  28 , within the enclosure door opening  26  by placing the lock assembly  2  within the enclosure door opening  26  and securing interior mounting plate securing brackets  64  to the respective securing studs  42  using alternate stud securing nuts  68 , such as Nyloc nuts or the like. The preferred stud securing nuts  68  hold the interior mounting plate securing brackets  64  against the enclosure door  28  at edges  27  of the enclosure door opening  26  to secure the lock assembly  2  to the enclosure door  28 . In the side view of the lock assembly  2 , shown in FIGS.  4 - 6 , the lock assembly  2  is shown secured to the enclosure door  28 .  
         [0084]    The simplicity with which the preferred lock assembly  2  can be installed within a computer enclosure door  28  is discussed. In preparation for installation, an opening  26  is cut or otherwise created in the enclosure door  28 . The lock assembly  2  is then inserted into the enclosure door opening  26  from the outside of an enclosure door  28  so that the lock case assembly  6  is inserted into the lock assembly receiving opening  26  and each of the securing studs  42  are placed within the enclosure door opening  26  so that the mounting plate  8  abuts against the outside  30  of the enclosure door  28 . As shown in FIG. 3, the interior mounting plate securing brackets  64  are then placed on the securing studs  42 , thereby sandwiching the edges  27  of the lock assembly receiving opening  26  between the interior mounting plate securing brackets  64 , respectively, and the mounting plate  8 . Once the interior mounting plate securing brackets  64  are placed on the respective securing studs  42 , stud securing nuts  68  are screwed onto the securing studs  42  to secure the lock assembly  2  to the enclosure door  58  as shown in FIGS.  4 - 6 . The stud securing nuts may be tightened using an appropriate tightening tool not shown.  
         [0085]    Although the preferred electronic lock of the present invention is an AUDITCON™ lock in the R series, AUDITCON™ locks having a low profile housing (LP) or a vertical lock housing (V) are also encompassed by the present invention. Furthermore, a number of different electronic locks may also be substituted for the AUDITCON™ locks including any of the electronic locks mentioned above, which are presently available in the industry, and any other similar locks. If necessary, minor modifications to accommodate attachment of the lock actuating assembly and the lock case assembly for these alternate electronic locks may be made without departing from the scope of the present invention.  
         [0086]    In preferred embodiments, the lock actuating assembly  2  is both mechanically and electronically interconnected with the lock case assembly. The lock actuating assembly  4  includes a code receiving mechanism  14  for entering access codes and an actuating member  16  operatively connected with the lock case assembly  6 . The code receiving mechanism is electronically connected with the lock case assembly  6  such that the lock case assembly  6  can function, in response to an electronic signal from the lock actuating assembly  4  resulting from entering a predetermined access code into the code receiving mechanism  14 , in a manner permitting the position of the bolt  22  to be changed from the first position to the second position by separately mechanically actuating the change of position of the bolt  22  from the first position to the second position by using physical force to change the position of the actuation member  16 .  
         [0087]    There are other two component locks systems that operate somewhat differently from the lock of the preferred embodiment. In an alternate embodiment (not shown), the alternate lock includes a bolt is spring biased such that the bolt is biased toward the first position, the lock actuating assembly is electronically interconnected with the lock case assembly and the lock actuating assembly includes a code receiving mechanism for entering access codes, wherein the code receiving mechanism is electronically connected with the lock case assembly such that the lock case assembly can function, in response to an electronic signal from the lock actuating assembly resulting from entering a predetermined access code into the code receiving mechanism, in a manner permitting the bolt to be depressed from the first position such that it can be depressed sufficiently to be in the second position.  
         [0088]    In a further alternate embodiment (not shown), the alternate lock includes a lock actuating assembly which is electronically interconnected with the lock case assembly, the lock actuating assembly includes a code receiving mechanism for entering access codes and the code receiving mechanism is electronically connected with the lock case assembly such that the lock case assembly can function, in response to an electronic signal from the lock actuating assembly resulting from entering a predetermined access code into the code receiving mechanism, to change the position of the bolt from the first position to the second position by separately mechanically actuating the change of position of the bolt.  
         [0089]    Referring now to FIGS. 9 and 10, the present invention includes an enclosure  102  having a plurality of enclosure doors  104 ,  106 . The front door  104  is secured in a closed position by an electronic lock assembly  2  of the type previously described. The enclosures  102  of the present invention include enclosure s of the kind disclosed in U.S. Pat. Nos. 6,515,225 and 6,185,098, the disclosures of which are incorporated by reference.  
         [0090]    Referring now also to FIGS.  11 - 14 , the lock bolt assembly  6  is shown secured to the front enclosure door  104 . FIGS.  14 - 19  show further views of the enclosure  102  and attachments including rotary latch assemblies  114 ,  114 ′. In FIG. 20, the rear door  106  is secured in a closed position by the alternate rotary latch assembly  114 ′, which is engaged with a bolt assembly  116  including an alternate mounting plate  8 ′ secured within a securing assembly receiving opening  120  in the rear enclosure door  106 . The bolt assembly  116  is secured to the mounting plate  118 .  
         [0091]    Referring now also to FIGS.  21 - 23 B, elements of an alternate universal mounting plate assembly  135  as shown in FIGS. 19 and 20 where an alternate universal mounting plate  136 , to which the L-shaped bracket  138  is attached, is secured to the left side of the enclosure  102  when facing the rear enclosure door  106 . In an alternate embodiment (not shown), the L-shaped bracket  138  is secured to the alternate mounting plate  136  when turn the opposite direction so that a further alternate universal mounting plate assembly (not shown) can be assembled for attachment to a right side of the enclosure  102  when facing the rear enclosure door  106 .  
         [0092]    The securing assemblies of the present inventions will preferably combine a mounting plate with components of each of the following types of latches, handles and locks:  
         [0093]    Compression Latches such as:  
         [0094]    Folding T Handle Compression Latch; Lift and Turn Flush Compression Latch; Lift and Turn Handle Compression Latch; Lever Compression Latch; Vise Action Compression Latch; and Multi-point Compression Latch and the like;  
         [0095]    Handles such as:  
         [0096]    Locking Pawl/Cam Action L-Handle; Non-Locking Pawl/Cam Action L-Handle; Locking L Handle; Non-Locking T Handle; Padlockable L Handle; Tool-Operated L Handle; Locking Push-Button L Handle; Non-Locking Push Button L Handle; D-Ring Handle; Locking D-Ring Handle; Grab Handle; Pull Handle; Finger Pull Handle; Pocket Pull Handle, Flush Mount; Concealed Pull Handle; Recessed Swing Handle; Quarter Turn Handle; Slam Action Handle and the like;  
         [0097]    Pawl/Cam Action Latches such as:  
         [0098]    Lever Quarter-Turn Latch; Quarter-Turn Latch; Key-Locking Quarter-Turn Latch; Wing Knob Quarter-Turn Latch Padlockable; Wing Knob Quarter-Turn Latch; 1-Point Door Latch; 2-Point Door Latch; 3-Point Door Latch; Rotary Latch; Push to Close Latch; Slam Action Latch and the like; and  
         [0099]    Locks such as: Cam Lock Cylinder and the like.  
         [0100]    It will be appreciated that still other latches, handles and locks may be used to secure the enclosure door of the present inventions without departing from the broad general scope of the present invention.  
         [0101]    It is to be understood that, even though numerous characteristics and advantages of various embodiments of the present invention have been set forth in the foregoing description, together with details of the structure and function of various embodiments of the invention, this disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size and arrangement of parts, within the broad principles of the present invention, to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.