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RELATED APPLICATIONS  
       [0001]    This is a continuation-in-part application of U.S. patent application Ser. No. 09/526,388 filed Mar. 16, 2000, now U.S. Pat. No. 6,273,007, issued Aug. 14, 2001, which was a divisional application of U.S. patent application Ser. No. 09/271,714 filed Mar. 18, 1999, now U.S. Pat. No. 6,044,776, issued Apr. 4, 2000. The entire disclosures of these related applications are expressly incorporated herein by reference. 
     
    
     
       BACKGROUND OF THE INVENTION  
         [0002]    1. Field of the Invention  
           [0003]    The present invention relates generally to a modular security safe and more particularly to a high security modular security safe which includes a plurality of panels interconnected together with bolts which are offset from the edges of the panels by use of security bolt boxes attached to interior rabbeted faces of top and bottom panels. The present invention also relates to a method of manufacturing the panels comprising the safe, and to a method of making the panels to form a safe.  
           [0004]    2. Related Art  
           [0005]    Security safes for the household protection of valuables, currency storage at convenient stores, and other small security applications are in wide scale use. Typically, safes employed for such applications are much smaller and lighter than those used in banks and other high security situations. The need for the smaller and lighter design is to facilitate the delivery and placement of these safes in houses and buildings typically not designed to withstand the weight of a large safe (4000-6000 pounds) or the prohibitive size of the safe.  
           [0006]    As a result, these lighter safes typically serve only as a deterrent to burglary attempts rather than a sophisticated defense against professional burglary.  
           [0007]    In order to increase the security of small application security safes, efforts have been made to design modular safes which can be moved piece by piece to a location where it will be used and then assembled. The modular style safe allows for ease of transportation, but prevents such transportation once assembled. It also provides a higher degree of security than other small application safes which, in some instances, can be carried away from the location.  
           [0008]    However, despite the increased weight of modular safes currently known, the very nature of the modular design reduces the security of such a safe in comparison to a one-piece cast safe. Up until now, modular security safes, by the very nature of being modular in design, have been ineffective in preventing attacks by professional burglars. While modular safes are an improvement upon previous minimum security safes which can be carried away or easily attacked, modular safes, while immobile, still are vulnerable at the points of connection between the plurality of components that make up the safe.  
           [0009]    Accordingly, what is desirable and has not heretofore been developed, is a modular safe which has the desired benefits of immobility and strength, with the added advantages of being impervious to attack at the critical joints of the modular pieces.  
           [0010]    Some of the numerous efforts to provide modular safes are as follows:  
           [0011]    Ouellette, U.S. Pat. No. 5,488,914, discloses a security device for boxes. The security device includes a cabinet device which has an open top section into which a bottom portion of the box which is to be secured is inserted into the upper inner portion of the cabinet device. The bottom base includes a locking device for securing the cabinet onto a supporting surface such as a floor.  
           [0012]    Nikoden Jr., U.S. Pat. No. 4,426,935, discloses a case for securing valuables which includes a plurality of interconnected panels defining an interior space. The individual panels are readily transportable for convenient location and assembly; however, the case, once assembled, cannot be so readily moved from its location. Some of the panels employed include inside-facing surfaces and connectors such as threaded studs, while cooperating connectors such as openings for receiving the studs are defined by other panels, so that upon assembly of the respective panels, access to the connectors is available only from within the interior of the case. The device further discloses top and bottom panels which are interconnected to the side walls of the enclosure. The bottom panel is fitted with filler plates to eliminate any gaps along the bottom side edges of the case. It is further disclosed that said panels may be made of sheet metal, having 90□ bends for forming the respective panel side edges. A double bend is then utilized for forming the respective lips which prevent access to the interconnecting bolts from the exterior of the security space.  
           [0013]    Sands, et al., U.S. Pat. No. 4,389,948, discloses a vault constructed by assembling together a plurality of separate, pre-fabricated panels. Each perpendicular comer of the assembled vault is provided in a panel which extends integrally from the respective comer to define significant portions of both of the adjacent sides of the vault, thereby avoiding the security weakness of separate orthogonally-jointed panes at these comers. Each panel additionally comprises a steel plate upon which is cast a barrier material of high penetration resistance, but relatively low weight, fiber-reinforced concrete.  
           [0014]    In one arrangement, there are four comer panels with two of said panels being interconnected by a uni-planar panel to define a first side of the assembled vault, and a space between the free edges of the other two said comer panels to define a door opening for the assembled vault on a second side thereof opposite to said first side. Said uni-planar panels also serve to provide as the top and bottom of the enclosed structure. These uni-planar panels can be inserted in multiple groups in order to form an increasingly large vault space. Except for the edges of the panels which define the door opening, each panel is formed around its edges to provide half lap joints which interfit with the corresponding formations on the neighboring panels. The overlapping joints, so-formed, insure accurate relative location of the panels and preclude the possibility of direct access being gained to the interior of the vault through the joints. All panel-to-panel connections are made internally, and none of the fixing is visible from the exterior of the vault. Each joint between adjacent corner and uni-planar panels is secured by means of a steel flitch plate which is welded along the vertical edge of one of the abutting panels and has a series of drillings which align with tapped holes along the vertical edge of the uni-planar panel, the screws being passed through the flitch plate and into the holes. Joints between the corner and rear panels and the floor and roof panels are similarly secured by steel angles which have a series of joints in each leg, which align with tapped holes along the adjacent horizontal edges of the panels, the screws being similarly passed through the angles and into the holes. In order for this joint angles to function as one structure, they must be welded together. The reinforced concrete layer of the panels is evenly distributed with randomly oriented masses of steel fibers providing a density in the range of 14,000 pounds per square inch.  
           [0015]    Sands et al., G.B. Patent No. 2,081,335, is the British counterpart to the above-described patent issued to Sands, et al., U.S. Pat. No. 4,389,948.  
           [0016]    Stone, U.S. Pat. No. 4,388,874, discloses a prefabricated concrete vault with a plurality of concrete members having jointed overlapping connections with adjacent members with peripheral edges thereof having offset surfaces for each other across the seam of the joint to provide non-continuous burglar-proof seams. In other words, in each of such joints, edge surfaces formed by the groove or rabbet-type overlap provide surfaces or edges which are offset from each other so that there is no straight-through seam or direct path of entry. A plurality of metal plates are anchored along the edges of the panels and are welded together to join the panels together.  
           [0017]    While a minimum of exterior seams are visible, giving the appearance of a permanent-type installation, the weld plates, which are welded into position in order to hold the separate portions together can easily be released from each other merely by burning out the welds and the component parts can then be transported away from the site. The result is a security safe which is highly secure in nature, but at the same time highly transportable, if necessary.  
           [0018]    Dippold, et al., U.S. Pat. No. 4,158,338, discloses a wall panel consisting of two units that can be interconnected with other panels engaging each other in a rabbet joint in which the projecting core layer parts are spacedly superimposed on each other to provide a burglar resistant connection between the panels which themselves are difficult to penetrate by burglar&#39;s tools.  
           [0019]    Each of the rectangular panels is formed with rabbets in its four narrow, elongated-edge portions which extend between the major inner and outer faces of each panel. Rabbet joints connect several of the panels to form a continuous box structure when the door is closed. The box structure is covered by outer and inner cases of relatively thin sheet metal welded along the edges of the safe. Each of the panels is made up of a combination of sintered aluminum oxide and perforated sheet metal. For greater resistance to burglary, the core layers of adjacent wall panels overlap each other. The layer in one unit of each panel thus extends beyond the corresponding layer of the other unit in the direction of panel width or length by at least ¼ of the total panel thickness. The panels further consist of a third fiber-reinforced elastomeric material, such as natural or synthetic rubber, which fills the interstices between the particles in each shell, the perforations of the shell walls and partitions, and completely covers all faces of the shell in an approximately uniform layer.  
           [0020]    Simmons, U.S. Pat. No. 470,017, discloses an improved safe which can be easily taken to pieces so that it can be easily carried in sections; thereby obviating the immense amount of time and labor usually required in moving a safe. After moving the safe, it can be easily and quickly built up again and placed in condition for use. The separate pieces are combined via V-shaped tongue and groove longitudinal edges. The bottom of the safe is provided with a deep groove socket in its upper surface, located near and parallel with the two sides and back of said bottom section or plate. This socket or seat is tapered downwardly or V-shaped in cross section and the longitudinal sides of the socket or seat are formed longitudinally irregular, as by a series of steps or rabbeted-out portions. The top plate or section of the safe is provided with a correspondingly similar socket or seat. The two sections of the body of the safe are formed at their outer edges with a tongue or projection, in length and in cross-section similar and corresponding to the two sockets, so that when the lower section of the body is placed in position, its tongue or tapered projection and lower edge will rest and fit snugly in the seat and the outer surfaces of the sections will be flush with the outer edges of the bottom plate.  
           [0021]    Farrel, U.S. Pat. No. 328,113, discloses a fire-proof safe with an outer shell and frame of metal and an inner frame of fire resistant material such as calcined gypsum, and/or hydraulic cement.  
           [0022]    Hall, U.S. Pat. No. 115,728, discloses a non-modular safe which can be progressively strengthened through the addition of additional thicknesses of steel or other type of metal plate to be safe.  
           [0023]    Hall, U.S. Pat. No. 70,202, discloses a safe upon which angle-irons are secured to the inner series of plates by rivets or screws with the angle-irons occupying all of the comers of the interior of the safe. The interior series of plates are dove-tailed into each other, one more move dove-tails of one plate entered into dove-tailed mortises in the edges of the adjoining plate or plates.  
           [0024]    None of these efforts, taken either alone or in combination, teach or suggest all of the benefits and the utility of the present invention.  
         OBJECTS AND SUMMARY OF THE INVENTION  
         [0025]    It is a primary object of the present invention to provide a high security modular safe.  
           [0026]    It is another object of the present invention to provide a modular safe which can be easily transported in pieces to a location and assembled at the location.  
           [0027]    It is an additional object of the present invention to provide a modular safe which can be installed at locations where it would be impossible to install an entire, pre-made safe.  
           [0028]    It is even an additional object of the present invention that upon assembly, the modular safe of the present invention is difficult, if not impossible, to remove from the location by conventional means.  
           [0029]    It is still even an additional object of the present invention to provide a modular safe wherein components are joined by way of a security bolt box from the interior top and bottom sides of the safe.  
           [0030]    It is even an additional object of the present invention that the security bolts boxes be located in an offset relation to the seam between the sides and top or bottom sections.  
           [0031]    It is still even a further object of the present invention that the top and bottom of the safe have a smaller inner portion and a larger outer portion and a rabbet or step therebetween.  
           [0032]    It is even another object of the present invention to step out outer portion of the top and bottom sides to give the illusion that there are no seams.  
           [0033]    It is even an additional object of the present invention to provide a modular safe that is suitable for mass production.  
           [0034]    It is yet another object of the present invention to provide a modular safe having panels formed of a shell into which concrete is poured in a single pour step.  
           [0035]    It is even an additional object of the present invention to provide a modular safe that is inexpensive to manufacture and easy to install.  
           [0036]    It is still a further object of the present invention to provide a modular safe which can be assembled to have a greater or smaller size by using more or less components.  
           [0037]    It is even a further object for each of the panels to have an outer portion and a recessed inner portion, which inner portion is recessed from the edge of the outer portion on all four sides.  
           [0038]    The modular security safe with offset security bolt box of the present invention includes a number of modular panels which serve as the top, bottom, and sides of the safe. The modular panels of the safe are cast in a plastic or metal mold with high-density concrete reinforced by expanded metal. The modular panels included outer portions and stepped or rabbeted inner portions. The panels are formed from a sheet of material bent to a desired form. Concrete is poured in to the panel, in a single pour step. The panel is vibrated to allow the concrete to settle, and the concrete is allowed to set. The outer surface can then be covered with a desired laminate. The top and bottom panels have security bolt boxes attached by bolts to the inner portions thereof. Security bolt boxes comprise a tray having a bottom and upstanding walls, and they can be formed by bending a single sheet of material. The modular side panels are attached to the top and bottom panels by bolts extending through the security bolt boxes. This results in a construction where the bolts are offset from the seams of the safe and therefore, the bolts, and the safe, are not subject to easy attack.  
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0039]    Other important objects and features of the invention will be apparent from the following Detailed Description of the Invention taken in connection with the accompanying drawings in which:  
         [0040]    [0040]FIG. 1 a  is a perspective view of the modular security safe of the present invention shown in an assembled form.  
         [0041]    [0041]FIG. 1 b  is a perspective view of the apparatus of FIG. 1 a  with the door of the safe removed.  
         [0042]    [0042]FIG. 1 c  is an exploded perspective view of the apparatus of FIG. 1 a.    
         [0043]    [0043]FIG. 2 is a perspective view of the security bolt box for use in assembling the modular safe of the present invention.  
         [0044]    [0044]FIG. 3 a  is perspective view of a side panel shell in a first stage of manufacture.  
         [0045]    [0045]FIG. 3 b  is a perspective view of the side panel shell shown in FIG. 3 a  in a subsequent stage of manufacture.  
         [0046]    [0046]FIG. 4 a  is a perspective view of the side panel shell shown in FIG. 3 b  in a subsequent stage of manufacture with attachment bolts and a first layer of expanded metal.  
         [0047]    [0047]FIG. 4 b  is a perspective view of the side panel shell of FIG. 4 a  with second layer of expanded metal.  
         [0048]    [0048]FIG. 5 a  is a perspective view of the side panel shell of FIG. 4 b  with support brackets prior to the final pouring of concrete filler.  
         [0049]    [0049]FIG. 5 b  is a perspective view of the side panel shell of FIG. 5 a  complete with the last layer of concrete filler.  
         [0050]    [0050]FIG. 6 a  is an alternate perspective view of the modular security safe of the present invention shown in an assembled form.  
         [0051]    [0051]FIG. 6 b  is a perspective view of the apparatus of FIG. 6 a  with the door of the safe removed.  
         [0052]    [0052]FIG. 6 c  is an exploded perspective view of the apparatus of FIG. 6 a.    
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0053]    The improved modular security safe with offset security bolt box of the present invention is shown in FIGS. 1 a ,  1   b  and  1   c . The safe is generally indicated at  20 . The safe  20  comprises a door  21  attached by a hinge  22 . The door  21  further includes a handle  23  for opening and closing the door. Combination lock means  24  is also provided in connection with the door  21  of safe  20 .  
         [0054]    As can be seen in FIG. 1 a  and in more detail in FIGS. 1 b  and  1   c , the modular safe  20  includes a top panel  30 , a bottom panel  40 , a back panel  60  and side panels  70 . These panels,  30 ,  40 ,  60 , and  70 , the structure of which will be further discussed hereinafter, are interconnected by means of security bolt boxes  50  which attach the panels together to form the safe  20 .  
         [0055]    Top panel  30  includes an outer portion  32  with an outer surface  33  and an inner portion  34  with an inner surface  35 . The inner portion  34  is generally smaller than the outer portion  32  in terms of length l and width w. A rabbet face  36  is created on the outer portion  32 . The rabbet face  36 , in connection with the perimeter  37  of the inner portion  34 , forms a step between the inner portion  34  and the outer portion  32 .  
         [0056]    Similarly, the bottom panel  40  includes an outer portion  42  with an outer surface  43  and an inner portion  44  with an inner surface  45 . The inner portion  44  is generally smaller than the outer portion  42  in terms of length l and width w. A rabbet face  46  is created on the outer portion  42 . The rabbet face  46 , in connection with the perimeter  47  of the inner portion  44 , forms a step between the inner portion  44  and the outer portion  42 .  
         [0057]    Attached to the inner surface  35  of the inner portion  34  of the top panel  30  is a security bolt box generally indicated at  50 . Likewise, a security bolt box  50  is attached to the inner surface  45  of the inner portion  44  of the bottom panel  40 . The security bolt box  50  includes a bottom face  52  and upstanding walls  54  to form a tray-like configuration. The upstanding walls  54  can be interconnected with the bottom face  52  or can be formed through a bending and folding operation that will be hereinafter described. The security bolt box  50  is attached to the inner portion  34  of top panel  30  and inner portion  44  of bottom panel  40  by means of anchor bolts (not shown) which extend through anchor bolt apertures  56  in the security bolt box  50 . The security bolt box  50  is also provided with attachment bolt apertures  58  extending about the upstanding walls  54  for receiving attachment bolts (not shown) to attach side panels  70  and back panel  60  with the top and bottom panels  30  and  40  to form the safe.  
         [0058]    The back panel  60  is a generally rectangular wall formed with a plurality of bolt apertures along upper and lower edges for interconnecting with the security bolt box  50  by attachment bolts.  
         [0059]    Side panels  70  include outer portions  72  and inner portions  74 . The outer portion  72  includes an outer surface or facia plate  73 , and the inner portion  74  includes an inner surface  75 . Like the top panel and bottom panel, the inner portion  74  is stepped in relation to the outer portion  72  creating a rabbet face  76 , which extends the length of the side panels, in a direction orthogonal to width W of the top panel  30  and bottom panel  40 . However, unlike the top panel  30  and the bottom panel  40  which are stepped down on all four sides, the top and bottom surfaces of the inner portion  74  remain flush with the outer portion  72 . Again, upper and lower edges of the inner surfaces  75  of the side panels  70  include apertures for receiving attachment bolts (not shown) that extend through the security bolt boxes  50  to join the side walls  70 , back wall  60  and top and bottom panels  30  and  40 .  
         [0060]    Referring now to FIG. 2, a perspective view of the security bolt box  50  is shown. Again the security bolt box includes a bottom face  52  and upstanding side walls  54 . The box can be formed from a single sheet of metal with cut out comers and edges bent up to form the flat piece into a tray. Anchor bolt apertures  56  are punched through the bottom face  52  for attachment of the security box  50  to the inner surfaces  35  and  45  of the inner portions  34  and  44  of top and bottom panels  30  and  40 . Attachment bolt apertures  58  are punched through the upstanding walls for attachment of the security box to top panel  30 , back panel  60  and side panels  70 .  
         [0061]    Referring now to FIGS. 3 through 5, the sequence steps in forming the panels is shown. A typical side panel is formed from a flat metal sheet which can be bent along edges thereof to form side walls  82  of side panel shell  80 . Alternatively, the side walls  82  can be separately formed and attached by welding  85  or other means to bottom plate  86 . The side panel shell  80  comprises a shell bottom plate  86 , and two side walls  82 . Also, two shell end walls  84 , also typically made of a sheet metal material, and are attached by welding or other means to the bottom shell plate  86  so form the basic side panel shell  80 . Prior to forming or attaching the walls to the bottom plate, the shell bottom plate  86  has attachment bolt apertures  58  punched out at both the top and bottom edges thereof. If the side wall will receive lock bolts from the door of the safe, the shell bottom plate  86  is further punched with locking bolt apertures  88  along an edge thereof. These locking bolt apertures are then covered with covers  89  which comprise cylindrical bodies and caps and which define the bolt receiving space during the remaining fabrication steps.  
         [0062]    [0062]FIGS. 4 a  and  4   b  show the next steps involved in the construction of the side panel. First, attachment bolts  57  are fitted through the attachment bolt apertures  58 . The attachment bolts  57  are then fitted with attachment plate spacers  63 . Thereafter a layer of expanded metal  90  is placed within the shell and covers the entire shell bottom plate  86  with the exception of the space occupied by the locking bolt aperture covers  89 . Next, the attachment bolts  57  are fitted through an attachment bolt plate  62  and locked into place by attachment nuts  61 . Then, a second layer of expanded metal  90  is positioned with the shell over the first layer.  
         [0063]    [0063]FIGS. 5 a  and  5   b  detail the final steps of construction. The second layer of expanded metal  90  is secured in place by support brackets  94  which are held in place by support bolts  97 . Then, a single pour of high density concrete  100  is poured into the shell. Then the shell is vibrated to permit the concrete to settle, and the concrete is allowed to set. Importantly, the panel is constructed with the smaller, inner portion down so that only one pour is necessary. At this point all that is required is the attachment of a cover or fascia plate of any desired material which can be glued or otherwise attached to the exterior of the panel to provide any desired appearance. This step can be performed before or after the construction of the safe.  
         [0064]    Construction of the top and bottom panels  30  and  40  follow generally the same method of construction. Likewise, the door  21  is a panel and does not require any special top and bottom filler panels.  
         [0065]    It should be noted that the concrete can be formulated in accordance with the requirements of the application. For example, high density concrete can be used for high security application, while ready mix or other more economic concrete mixtures can be used in connection with lower security applications. Further, the other components of the panels, i.e. the expanded metal or reinforcement plates or aluminum or stone can be varied as desired.  
         [0066]    After the panels set, the attachment bolts  57  and anchor bolts are removed from the panels. Security bolt boxes  50  are then placed on both the top and bottom panels  30  and  40 , and are fixed in place with the anchor bolts which pass through the anchor bolt apertures  56  of the security bolt box  50  and into security anchor bolt apertures at the top and bottom panel  30  and  40  where they are locked into place by anchor nuts  61  which remain within the panels from the panel fabrication process. The back and side panels  60  and  70  can then be attached to both the top and bottom security bolt boxes  50  and are fixed into place by the attachment bolts which pass through the attachment bolt apertures of the security bolt boxes fixed into place by the attachment nut to form the basic enclosure of the safe. Finally a hinged door can be affixed to the open wall to provide a complete security enclosure. Importantly, the on-site assembly process can be conducted on a ground-up basis. In other words, the bottom panel is positioned in a desired location and then the back and side panels placed thereon and attached thereto. The bottom thereby provides a flat, even work base or foundation. Also, with reference back to FIGS. 1 a  and  1   b , it can be seen that the top and bottom panels  30  and  40  extends past the side walls  70  and rear wall  60  to optically hide the abutting seams of the vertical panels.  
         [0067]    Finally, the inside of the safe can be finished off with a plate  55  that sits on top of upstanding walls  54  of the security bolt box  50 . Preferably, such a cover has a depending side wall at one side for covering the forward base seam between the security bolt box and the inner portion  34  or  44  of the top or bottom panel  30  or  40 . This cover plate can be screwed down on a bolt box and/or can be hingedly attached to provide for a “secret compartment.” 
         [0068]    Referring now to FIGS. 6 a ,  6   b  and  6   c , another embodiment of the modular security safe of the present invention is shown. The modular security safe is generally indicated at  120  and includes a top panel  130 , a bottom panel  140 , and back and side panels  170 . These panels,  130 ,  140  and  170 , the structure of which will be further discussed hereinafter, are interconnected by means of security bolt boxes  150  which attach the panels together to form a safe. Top panel  130  includes an outer portion  132  with an outer surface  133  and an inner portion  134  with an inner face  135 . The inner portion  134  is generally smaller than the outer portion  132  in terms of length l and width w. A rabbet face  136  created on the outer portion  132  which, in connection with the perimeter  137  of the inner portion  134 , forms a step between the inner portion  134  and the outer portion  132 .  
         [0069]    Similarly, the bottom panel  140  includes an outer portion  142  with an outer surface  143  and an inner portion  144  with an inner surface  145 . The inner portion  144  is generally smaller than the outer portion  142  to in terms of length l and width w. A rabbet face  146  is created on the outer portion  142 , which in connection with the perimeter  147  of the inner portion  144 , forms a step between the inner portion  144  and the outer portion  142 .  
         [0070]    Attached to the inner surface  135  of the inner portion  134  of the top panel  130  is a security bolt box generally indicated at  150 . Likewise, a security bolt box  150  is attached to the inner surface  145  of the inner portion  144  of the bottom panel  140 . The security bolt box  150  includes a bottom face  152  and upstanding walls  154  to form a tray like configuration. The upstanding walls  154  can be interconnected with the bottom face  152  or can be formed through a bending and folding operation as previously described. The security bolt box  150  is attached to the inner portion  134  of top panel  130  and inner portion  144  of bottom panel  140  by means of anchor bolts (not shown) which extend through the anchor bolt box apertures  156  in the security bolt box  150 . The security bolt box  150  is also provided with attachment bolt apertures  158  extending about the upstanding walls  154  for receiving attachment bolts not shown to attach side and back panels  170  with the top and bottom panels  130  and  140  to form a safe. Importantly, the upstanding side walls  154  of the security bolt box  150  are recessed from the edges of inner portion  144  to provide an exposed portion of the inner surface  145  of inner portion  144  for facilitating interconnection of the top and bottom panels with the side and back panels  170 .  
         [0071]    The side and back panels  170  include outer portions  172  and inner portions  174 . The outer portions  172  include an outer surface  173  and the inner portions  174  includes an inner surface  175 . Like the top panel and bottom panel, the inner portions  174  are stepped in relation to the outer portion  172  creating a rabbit face  176  which extends about all four sides of the side and back panels  170 . Upper and lower surfaces of inner surfaces  175  of the side and back panels  170  include apertures for receiving attachment bolts (not shown) that extend through the security bolt boxes  150  to join the side walls  170 , back wall  160  and top and bottom panels  130  and  140 .  
         [0072]    Front panel  121  is constructed similarly to side and back panels  170  with an outer portion and a stepped down inner portion along all edges of the outer portion. The front panel  121  can be hingedly attached to one side wall  170 .  
         [0073]    The panels shown in FIGS. 6 a - 6   c  can be constructed in the same manner as previously disclosed herein.  
         [0074]    Having thus described the invention in detail, it is to be understood that the foregoing description is not intended to limit the spirit and scope thereof. What is desired to be protected by Letters Patent is set forth in the appended claims.

Summary:
The modular security safe with offset security bolt box is provided. A method of manufacturing panels and assembling the safe is also provided. The modular safe includes a number of modular panels which serve as the top, bottom, and sides of the safe. The modular panels of the safe are formed in a plastic or metal mold having high-density concrete therein reinforced by expanded metal. The modular panels include outer portions and stepped or rabbeted inner portions. The top and bottom panels have security bolt boxes attached by bolts to the inner portions. The modular side panels are attached to the top and bottom panels by bolts extending through the security bolt boxes. This results in a construction where the bolts are offset from the seams of the safe and therefore, the bolts, and the safe, is not subject to easy attack. The design consists of six modular panels, which define the top, bottom, three sides, and a door which is fitted with moving bolts which engage the adjacent interior of the side-wall when closed, to prevent access. The individual sections of the safe are readily transportable for convenient location and assembly; however, the case, once assembled, cannot be so readily moved.