Patent Publication Number: US-2020291700-A1

Title: Door security kit and method for preventing forceful opening of a door

Description:
CROSS-REFERENCES TO RELATED APPLICATIONS 
     This patent application is a continuation-in-part of U.S. non-provisional patent application Ser. No. 16/355,077 filed on Mar. 15, 2019, and further, claims the benefit and content of U.S. patent application Ser. No. 16/355,077 as though fully appearing herein. 
    
    
     STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT 
     Not applicable. 
     NAMES OF THE PARTIES TO A JOINT RESEARCH AGREEMENT 
     Not applicable. 
     BACKGROUND OF THE INVENTION 
     (1) Field of the Invention 
     The field of the present inventive concept relates generally to methods and equipment utilized to provide an ultra-strong door protective device that can be readily locked by a threatened user from inside the room to be secured. The April 2007 shooting at Virginia Tech has been one of the numerous violent incidents of a deranged shooter breaching a door within a school, business, or other facility and committing deadly mayhem upon the occupants of one or more rooms. 
     In particular, classroom doors are usually not constructed with a heavy-duty, reinforced locking device that may be put in place and secured from inside a threatened room. Therefore, students and school staff personnel are not able to quickly buttress the door against forced opening as a protective measure. As a result, an assailant has no difficulty breaking into the room, whether the room is a school classroom or a commercial office. The present inventive concept discloses a door security device comprising a portable, lockable metal compartment which engages a corresponding metal, notched strike plate, the strike plate being mounted to a metal door frame which is enveloped within the wall. 
     (2) Description of the Related Art, Including Information Disclosed Under 37 CFR 1.97 and 1.98 
     U.S. Pat. No. 10,072,455; Smith; Sep. 11, 2018. A temporary door latch device for a pre-hung door and casing. The door has a door lock cylinder opening and a door latch opening and the casing has a latch bolt opening. The device includes a female portion having a pair of opposed and spaced apart resilient fingers, each of said fingers having a plurality of inwardly extending teeth thereon. The female portion is receivable in the door lock cylinder opening and the door latch opening. The male portion has a pair of opposed and spaced apart fingers, each of the fingers having a plurality of teeth thereon. The male portion is receivable in the latch bolt opening and the door latch opening. The teeth on the female portion engage the teeth on the male portion in one orientation and are disengaged in another orientation. 
     U.S. Pat. No. 10,151,127; Shell, R.; Dec. 11, 2018. The present invention relates to a keyless portable lock for a door. The portable door lock includes a horizontal bar that lays across the door and/or the door frame and a strap with one or more holes. The user pulls on the strap, closes the door and inserts a rod through the one or more strap holes so that the rod lays across the door and the frame on the opposite side of the door as the horizontal bar. This action will prevent the door from being opened. A transverse bar may extend from the horizontal bar at approximately 90 degree angle so that the portable door lock is generally in the shape of an “L.” 
     U.S. Pat. No. 10,125,526; Mahoney, et. al.; Nov. 13, 2018. A door security apparatus is disclosed herein. The door security apparatus comprises a sleeve member, a door engagement member and a spacer, and is configured to engage a double-lever arm door closer to allow for the locking of a door from the inside. The apparatus further comprises a locking mechanism for keeping the apparatus attached to the door closer. The door engagement member is configured to engage the top edge of a door, the sleeve member is configured to slidably engage the double-lever arm door closer, and the spacer is configured to connect the door engagement member and the sleeve member. 
     U.S. Pat. No. 10,041,273; Dieguez, R.; Aug. 7, 2018. An auxiliary lock for preventing a hinged door from opening all the way is provided. The lock comprises a strike plate, a flip lock plate, a catching member to receive a door knob or handle, and a means for connecting the catching member and flip lock plate. In an embodiment, the strike plate may be configured to replace any standard strike plate disposed on an inside portion of a door jamb, and the flap lock plate may longitudinally extend from a hinged connection with strike plate in the direction of an opening door so as to optionally block the door from opening and avoid obstructing a swinging door when disengaged. In use, the catching member may be placed around the door knob or handle so that the means for connecting the catching member and flip lock plate form an inseparable link between the door jamb and door itself. 
     U.S. Pat. No. 9,127,489; Orlov, et. al.; Sep. 8, 2015. A door stop includes a body having a longitudinal axis and a rotating toggle operably connected to the body. The toggle is rotatable such that a longitudinal axis of the toggle aligns with the longitudinal axis of the body in an insertion position and the longitudinal axis of the toggle is transverse to the longitudinal axis of the body in a locked position. The door stop includes a lock assembly operably mounted to the body to lock the toggle. Monitoring circuitry provides indication of a location of the door stop and/or an alarm mode. 
     U.S. Published patent application Ser. No. 16/355,077; Tallent, J. Mar. 15, 2019 
     A door security kit comprising (1) a door guard assembly and (2) a modified strike plate, constructed with a top notch and bottom notch. The door guard assembly manifests a cuboid-shaped compartment comprising a rear vertical panel, having an adjustable channel. A mortise cylinder mounted internally to the compartment consists of a modified cam and lever arm on one end and a key way on the opposite. The mortise cylinder, connected to a locking/un-locking mechanism, when rotated by a key, operates a mechanism which controls the size of the adjustable channel. The protecting door, and the strike plate, are both housed and operate within a commercial door frame. Turning of the mortise cylinder to the locked configuration causes the mechanism to decrease the length of the channel, thereby causing the channel to clamp onto the notches of the strike plate, preventing movement of the door within the doorframe. 
     BRIEF SUMMARY OP THE INVENTION 
     The primary function of the disclosed inventive concept is the operation of a door security kit utilizing the construction of a modified ASA/ANSI strike plate mounted on a doorframe wherein a strengthened portion of the modified strike plate, upon door closure, protrudes into a protected room. A corresponding portable metal structure then positions integral mechanical components to rigidly clamp onto the protruding portion of the modified strike plate. The clamping action prevents the withdrawal of the door&#39;s bolt from within the bolt hole of the modified strike plate, as an outer surface of the metal structure simultaneously abuts both the door and the associated door frame. Thus, the door is rendered essentially unopenable, providing refuge to the occupants of the protected room. 
     The disclosed security device herein, referred to as a Door Security Kit  1 , comprises an ASA/ANSI modified strike plate  70  having an elongated lip  76 . a cuboid metal compartment  3 , door guard assembly  2 , and a compartment  3  hanger  90 . The Door Security Kit  1 , similar to the concept discussed above, prevents the opening of a door  60  which is mounted in a metal doorframe leading to a protected room. Such an extreme protective arrangement is necessary, considering the frequent occurrences of circumstances of an turned shooter(s) firing through doors, or door closing systems, endangering the lives of the occupants of a classroom or a commercial business office. 
     The external, reinforced component of the door security kit  1  consists of the cuboid-shaped metal compartment  3 . In the preferred embodiment, the compartment  3  further comprises three basic parts: a housing  80 , a top plate  10 , and a bottom plate  30 . The compartment  3  is fabricated using, in the preferred embodiment, SAE 304 stainless steel. The top plate  10  manifests a circular opening  14  which permits rigid installation of a mortise cylinder  51  and associated spacers  50 , shown in  FIG. 2 ,  FIG. 2A ,  FIG. 5 ,  FIG. 6 . 
     The bottom plate  30  of the compartment  3  features a vertically-oriented upper channel cutout  37  which transitions into a wider, rectangular shaped lower bay cutout  38 , as shown in  FIG. 7  and  FIG. 7A . The compartment  3  works in conjunction with a modified metal strike plate  70 . The modified strike plate  70  must be installed within the door frame  68  which encompasses a door  60  leading to the protected room, which must be fortified from break-in. 
     A standard control key  57  and keyway  58  are used to operate the mortise cylinder  51 , the mortise cylinder  51  being permanently attached within the top plate  10  of the compartment  3 . The door  60  which is to be secured, in the preferred embodiment, is housed, and operates within, a commercial metal door frame  68 . 
     The aforementioned mortise cylinder  51 , when turned by the control key  57 , activates a mechanism to modify the internal dimension of the adjustably-sized channel cutout  37 . The channel cutout  37 , in its locked configuration, functions by clamping onto the elongated lip  76  of the modified strike plate  70 , thereby preventing opening of the subject door out of the doorframe. FIG and  FIG. 10  exhibit the unlocked and locked configuration, respectively, of the bottom plate  30 . 
     The modified strike plate  70 , shown in  FIG. 1 ,  FIG. 16 , and  FIG. 17 , is also of SAE 304 stainless steel, at least 0.125 inch thick. The modified strike plate  70  features a vertically-oriented elongated lip  76  which, when installed within a doorframe  68  and door jamb, protrudes approximately 1 to 2 inches from the doorframe  68  and into the protected room. This designed protrusion is more readily seen in  FIG. 3 . The modified strike plate  70  conforms to ASA and ANSI standards, and, in the preferred embodiment, is installed in the door frame  68  within which the protecting door  60  is hung 
     To provide strengthened resistance to an attempted forced opening of a protecting door  60 , the first step by a user is to close the protecting door  60 , whereby the elongated lip  76  of the modified strike plate  70  is caused to protrude into the room. Next, the user places the upper channel cutout  37  of the compartment  3  oriented in a loosely-clamped position surrounding the upper shoulder  73 ( a ) and lower shoulder  73 ( b ) of the elongated lip  76  of the modified strike plate  70 . The pending closure of a do or  60  is illustrated in  FIG. 3 . 
     The key  57  of the mortise cylinder  51  is then turned (approximately 120 degrees) to the locked position, where the neck  37 ( a ) of the upper channel cutout  37  of the bottom plate  30  and a flange  45  on a reinforcing brace  44  reduces the channel cutout  37  to its minimum dimension. This reduction to minimum dimension thereby forces the upper channel cutout  37  into a rigid clamp against both the upper notch  71  and lower notch  72  of the modified strike plate  70 . This is the only circumstance where the key  57  may be removed from the compartment  3  of the door security device  1 . 
     Physical tests have demonstrated that vigorously swinging a 750-pound weight against a test door  60  cannot budge the compartment  3  and its upper channel  37  from the clamped configuration about the elongated lip  76 , the protected room  63 , thereby remaining sate from forced entry. 
    
    
     
       BRIEF DESCRIPTION OF THE VIEWS OF DRAWINGS AS EXEMPLARY EMBODIMENTS OF THE INVENTIVE CONCEPT 
         FIG. 1  is a stylized partial view of the operation of a Door Security Kit  1 , showing a modified strike plate  70  attached to the doorframe  68  constructed within a wall  63  and having a supporting door stop  62 . Further, the channel cutout  37  of the bottom plate  30  of the compartment  3  (the outline of which is shown by dashed lines) is depicted in the process of being placed about the top notch  71  and bottom notch  72  of the modified strike plate  70 . 
         FIG. 2  illustrates a head-on view of the outer surface  10 ( a )of the compartment  3 , further showing the mortise cylinder lock  51 , and the control key  57  inserted. 
         FIG. 2A  is a cutaway view of the compartment  3  of the door security kit  1 , further showing the mortise cylinder  51 , cylinder spacers  50 , the tailpiece  20 , a movable rod  21 , the slide  40  and its conjoined reinforcing brace  44 . The rod  21  is shown as having moved the slide  40  upward toward its locking position against the channel cutout  37  (not shown). The extended lip  76  is shown clamped within the confines of the compartment  3 . 
         FIG. 3  displays an overhead view of the compartment  3  just prior to the protecting door  60  being moved into a fully closed position against the door stop  62 , at which time the channel cutout  37  of the compartment  3  will be placed onto the elongated lip  76  and outer faceplate  78  of the modified strike plate  70 , which is attached to a doorframe  68  adjoining the protected room  63 . 
         FIG. 4  presents a standalone perspective view of the housing  80 , which forms the main structural component of the compartment  3 . 
         FIG. 5  displays a perspective view of the inner surface  10 ( b ) of the top plate  10  component. As shown, the left and right edges of the top plate  10  feature a continuously, alternating pattern of labs  13  and side gaps  15 , including upper and lower gaps  15 ( a )( b ). Further shown are a plurality of bolsters  34 ( a )-( f ), all having internally threaded apertures. 
         FIG. 6  illustrates a three-dimensional view of the top plate  10  of the compartment  3 , further showing the circular opening  14  used to attach the mortise cylinder  51  onto the outer surface  10 ( a ) top plate  10 . 
         FIG. 7  presents a view of the outer surface of the bottom plate  30  component of the compartment  3 . The edges of the bottom plate  30 , manifest alternating tabs  31  and hollows  32 . Further shown is the adjustably-sized channel cutout  37  and the wider bay cutout  38 . The width  38 ( b ) of the bay cutout  38  corresponds to the width of the reinforcing brace  44  component of the door guard assembly  2 . 
         FIG. 7A  is an internal view of the housing  80 , superimposed atop the bottom plate  30 . Two pairs of co-axial cylinder head setscrews  17 , having knurled edges  17 ( a ) are shown. Also visible is the adjustably-sized channel cutout  37 , its rounded neck  37 ( a ), and the extended bay cutout  38 . 
         FIG. 8  illustrates a view of the bottom plate  30  superimposed against the top plate  10  (out of view), and further shows a portion of the mortise cylinder  51  installed into the top plate  10 . The reinforcing brace  44  is shown in the unlocked configuration. In this configuration, the maximum dimension (A) of the channel cutout  37  is achieved, extending from the channel neck  37 ( a ) to the top of the “flange”  43  of the reinforcing brace  44 . 
         FIG. 9  depicts the position of the rod  21  of the tailpiece  20 , the tailpiece  20  having been rotated by the mortise cylinder  51  (shown in  FIG. 8 ) so as to cause the slide  40  and its connected reinforcing brace  44  to travel downward into the unlocked position. 
         FIG. 10  illustrates the bottom plate  30  superimposed over the top plate  10  (out of view). The reinforcing brace  44  is shown in the locked configuration of the compartment  3 . Also shown is the racetrack pattern  41  of the slide  40 , wherein the illustrated position of the rod  21  indicates that the rod  21  has moved the slide  40  and the attached reinforcing brace  44  upwards to form the minimum dimension (A 1 ) of the channel cutout  37 . 
         FIG. 11  depicts the position of the rod  21  of the tailpiece  20 , the rod  21  having been rotated by the tailpiece  20  and mortise cylinder  51  (as shown in  FIG. 8 ) forcing the rod  21  to move the slide  40  and its connected reinforcing brace  44  upwards into the locked configuration. 
         FIG. 12  is a three-dimensional frontal view of the controlling surface  20 ( a ) of the tailpiece  20 , showing the orthogonal attachment of the rod  21  to the tailpiece  20 . Two machine screws  16  are inserted into apertures for attachment of the key way  58  of the mortise cylinder to the (unseen) opposite, abutting surface  20 ( b ) of the tailpiece  20  (further shown in  FIG. 9  and  FIG. 11 ). A longitudinal junction aperture  22  in view is the portion of the tailpiece  20  through which the key way  58  for the control key  57  extends. 
         FIG. 13  depicts a typical cylinder head setscrew  17  with a knurled head  17 ( a ) utilized for fastening into the sides of the housing  80 . 
         FIG. 14  depicts a view of the outer surface of the reinforcing brace  44 , being permanently affixed to the outer surface of the slide  40 . Further shown is the open racetrack pattern cutout  41  which accommodates the rod  21  of the tailpiece  20 . The flange  43  of the reinforcing brace  44  is also shown. The shown dimension labeled as  38 ( b ) on the reinforcing brace  44 , corresponds to the width of the bay cutout  38 . 
         FIG. 15  depicts a view of the opposite side of that of  FIG. 14 . Shown is the inner surface of the slide  40 , wherein the flange  43  of the reinforcing brace  44  is also shown. The crescent  45  of the slide  40  is slightly depressed so as to allow space for the lower shoulder  73 ( b ) of the modified strike plate  70  to fit over the top portion of the flange  43  in the locked configuration of the compartment  3 . In the fully locked configuration of the compartment  3 , the flange  43  is also rigidly clamped against the bottom notch  72  of the modified strike plate  70 , as shown in  FIG. 1 . 
         FIG. 16  depicts a view of the modified strike plate  70 , further showing a bolt-hole  75 , the upper shoulder  73 ( a ) and its corresponding top notch  71 , the lower shoulder  73 ( b ) and the corresponding bottom notch  72 , and the elongated lip  76 . Two countersunk apertures  12  are in view, which are used to attach the modified strike plate  70  to the corresponding doorframe  68 . 
         FIG. 17  is a profile view of the modified strike plate  70 , as oriented by looking at  FIG. 16  from left-to-right, parallel to the length of the modified strike plate  70 . The upper shoulder  73 ( a ), upper notch  71 , elongated lip  76 , inner faceplate  77 , and outer faceplate  78  are shown. The modified strike plate  70  is pictured as attached to a doorframe  68 . 
         FIG. 18  pictures an overhead view of an embodiment of a hanger  90 , further showing an integral pillar  95 . The pillar  95  provides a rigid lengthwise mechanism against which the upper channel cutout  37  of the bottom plate  30  can be clamped for stowage of the compartment  3 . The positioning of the compartment  3 , when retained within upon hanger  90  is shown by dashed lines. 
         FIG. 19  depicts a view of the outside surface  94  of the hanger  90 . The hanger may be attached to a corner structure, a desk, or a doorframe proximate the protecting door  60 . As described, the pillar  95  provides a rigid mechanism about which the upper channel cutout  37  of the bottom plate  30  can be clamped for stowage of the compartment  3 . Also shown is a plurality of attachment holes  92  for insertion of appropriate fasteners. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The objects, features, and advantages of the inventive concept presented in this application are more readily understood when referring to the accompanying drawings. The drawings, totaling twenty-one figures, show the basic components and functions of embodiments and/or methods of use. In the several figures, like reference numbers are used in each figure to correspond to the same component as may be depicted in other figures. 
     The disclosed inventive concept, referred to as a Door Security Kit  1 , comprises a door guard assembly  2 , a compartment  3 , a modified strike plate  70 , and a compartment hanger  90 . The Door Security Kit  1  is utilized to prevent a door, which is mounted in a metal doorframe  68 , from being forcibly opened under hostile circumstances which threaten the safety of the occupants of a protected room  63 . 
       FIG. 1  is a stylized view of the operation of a Door Security Kit  1  in which a modified strike plate  70  is attached to the doorframe  68  constructed within a wall  63  and having a supporting door stop  62 . Further, the channel cutout  37  of the bottom plate  30  of the compartment  3  (the outline of which is shown by dashed lines) is depicted nearly in position to be placed about the top notch  71  and bottom notch  72  of the modified strike plate  70 . A reinforcing brace  44  is vertically movable such that its flange  43  component will abut the bottom notch  72  of the modified strike plate  70  in the locked configuration. 
     A control key  57  (not shown) controls rotary movement of the mortise cylinder  51  such that the rod  21  moves a metal plate referred to as a slide  40 , the slide  40  being permanently attached to the reinforcing brace  44 . 
     The cuboid-shaped compartment  3  forms the external, reinforced component of the door security kit  1  (shown in  FIG. 2 ,  FIG. 2A , and  FIG. 3 ). The compartment  3  consists of three basic parts: a housing  80 , atop plate  10 , and a bottom plate  30 . The compartment  3  is fabricated using, in the preferred embodiment, SAE 304 stainless steel. The top plate  10  (shown in  FIG. 5  and  FIG. 6 ) manifests a circular opening  14  which permits compatible installation of a mortise cylinder  51  and associated spacers  50  (see  FIG. 2 ,  FIG. 2A ). The bottom plate  30  features a vertically-oriented upper channel  37  which transitions into a substantially wider extension which forms a lower bay cutout  38  (shown in  FIG. 7  and  FIG. 7A ). The compartment  3  works in conjunction with a modified metal strike plate  70 . The modified strike plate  70  must be installed within a doorframe  68  which supports a door  60  leading to the “protected” room  63  which must be fortified from break-in. 
     Components interior to the compartment  3  comprise the door guard assembly  2  which functions to enable the secure locking of a protecting door  60 . The door guard assembly  2  components include a mortise cylinder  51 , a control key  57 , a keyway  58 , a cam-like tailpiece  20 , having an orthogonally-attached rod  21 , a slide  40 , and a reinforcing, brace  44 . 
     The modified strike plate  70 , shown in detail in  FIG. 16  and  FIG. 17 . is fabricated of SAE 304 stainless steel, and at least 0.125 inch thick. The modified strike plate  70  features a vertically-oriented elongated lip  76  which, when installed, protrudes outwardly, approximately 1 to 2 inches, from the doorframe  68  and into the protected room  60 . This design feature is more readily seen in  FIG. 1 , and is also shown in  FIG. 3 . The modified strike plate  70  conforms to ASA and ANSI standards, and, in the preferred embodiment, is installed in a metal door frame  68  within which the door  60  is hung. 
     Again referring to  FIG. 1 , there is illustrated a view of the Door Security Kit  1 , with the outline of its compartment  3  shown in dashed lines. The bottom plate  30  is illustrated in its operating context as seen from the perspective of a user in the process of enabling the clamping of the channel cutout  37  of the bottom plate  30  about the upper shoulder  73 ( a ) and lower shoulder  73 ( b ) (out of view) of the elongated lip  76  of the modified strike plate  70 . The compartment  3  will then be locked onto the protruding lip  76  of the modified strike plate  70  by a user inserting a control key  57  into the mortise cylinder  51  and turning the control key  57  to the locked position. 
       FIG. 2  illustrates a head-on view of the outer surface  10 ( a ) of the compartment  3 , showing the outer surface  10 ( a ) of the top plate  10 , along with the mortise cylinder lock  51 , and the control key  57  inserted. Also depicted are two cylinder-head set screws  17 , which manifest interiorly-hidden knurled knobs  17 ( a ) which help guide the slide  40  along its movement path parallel to the bottom plate  30 . This guiding action is more readily understood in viewing  FIG. 7A ,  FIG. 8 , and  FIG. 10 . 
       FIG. 2A  presents a cutaway side view of the compartment  3  as seen from the orientation of section lines A-A of  FIG. 2 . The compartment  3  is shown, with the mortise cylinder  51  having been rotated to the locked configuration. Further displayed is the door guard assembly  2 , consisting of the mortise cylinder  51 . the tailpiece  20  with its integral rod  21 , and the slide  40 . The elongated lip  76  of the modified strike plate  70  and its upper shoulder  73 ( a ) are shown clamped by the channel cutout  37  (not in view) of the bottom plate  30  of the compartment  3 , thereby rendering the locked condition of the compartment  3 , safeguarding the protected room  63 . 
     The reinforcing brace  44 , permanently attached to the slide  40 , is hidden from view by the inner surface of the bottom plate  30 . The control key  57  has been turned, moving the slide  40  upward, toward the locked configuration of the compartment  3 . 
     The exterior of the mortise cylinder  51  is also shown in  FIG. 2  and  FIG. 2A , as it tits within the circular aperture on the outer surface  10 ( a ) of the top plate  10  of the compartment  3 . 
     In viewing  FIG. 3 , there is depicted an overhead view of the subject door  60  as it approaches its fully closed position against a metal doorstop  62  and metal doorframe  68 . The modified strike plate  70  is shown attached onto the doorframe  68 , resulting in the elongated lip  76  protruding past the inner edge of the doorframe  68 . A typical bolt  64 , internal to the door  60 , is shown in contact with the elongated lip  76  of the modified strike plate  70 , as the door  60  approaches the closed position. 
     Referring to  FIG. 3 , once the protecting door  60  is fully closed, the compartment  3  will be positioned so as to abut the interior surface  67  of the protecting door  60  and simultaneously, the interior of the associated doorframe  68 . Although not seen in  FIG. 3 , the upper channel cutout  37  of the compartment  3  will be placed onto the elongated lip  76  to effectuate the secure locking by the components of the door guard assembly  2 . This condition is further displayed in  FIG. 2A . 
       FIG. 4  illustrates an isolated perspective view of the housing  80  component of the compartment  3 . The four from edges of the housing  80  are constructed with a continuous alternating pattern of front notches  81  and front ridges  82 . Likewise, the four rear edges of the housing  80  a feature a continuous alternating pattern of rear ridges  82 ( a ) and rear notches  81 ( a ). Also shown in  FIG. 4 , on both sides of the housing  80 , are two pairs of co-axial apertures  83  for the insertion of knurled cylinder-head set screws  17 . 
       FIG. 5  displays a perspective view of the inner surface  10 ( b ) of the top plate  10  component. As shown, the left and right edges of the top plate  10  feature a continuously alternating pattern of tabs  13  and side gaps  15 . The upper edge of the top plate  10  manifests an upper gap  15 ( a ) between two tabs  13  while the lower edge of the top plate  10  features a similarly-positioned lower gap  15 ( b ) positioned between two tabs  13 . 
     As can be understood, the upper gap  15 ( a ), lower gap  15 ( b ), and the sequenced tabs  13  and side gaps  15  of the top plate  10  fit precisely within the appropriate end notches  81 ( b ), front notches  81 , and front rear ridges  82  of the housing  80 , respectively. These interconnected gaps, notches, and ridges serve to provide exceptional lateral edge strength to the compartment  3 . The top plate  10  further manifests a left upper bolster  34 ( a ), rigid upper bolster  34 ( d ), left mid bolster  34 ( b ). right mid bolster  34 ( b ), left lower bolster  34 ( c ), and right lower bolster  34 ( f ). 
     Each of the aforementioned bolsters  34 ( a )- 34 ( f ) are constructed as cylindrical posts which are welded  35  onto their respective locations and further, each bolster  34 ( a )-( f ) manifests internal threading, as shown. Machine screws are inserted through countersunk apertures  19  in the bottom plate  30  to fasten the bottom plate  30  (shown in  FIG. 7  and  FIG. 8 ) into the bolsters  34 ( a )-( f ) of the top plate  10 .  FIG. 5  displays a circular opening  14  within which the mortise cylinder  51  is to be mounted. 
       FIG. 6  displays a perspective view of outer surface the top plate  10 . The top plate  10 , in the illustrated embodiment of  FIG. 5  and  FIG. 6 , exhibits a bend creating a ten-degree slope between the upper face  10 ( a ) and the lower face  10 ( b ) of the top plate  10 . A different embodiment of the compartment  3  may feature a continuous planar shape, with deletion of the bend of the top plate  10 . In such an embodiment the left upper bolster  34 ( a ) and the right upper bolster  34 ( b ) will manifest a longer length, continuing to enable direct contact with the bottom plate  30  of the compartment  3 . Both  FIG. 5  and  FIG. 6  also displays a circular opening  14  within which the mortise cylinder  51  is to be mounted. 
       FIG. 7  displays a view of the inner surface of the bottom plate  30  of the compartment  3 . The bottom plate  30  is a planar, essentially rectangular-shaped item that is machined, around its perimeter, with a series of alternating tabs  31  and lateral hollows  32 ( a ). Similar to other exterior components of the compartment  3 , the edges of the bottom plate  30  manifest a continuous alternating pattern of tabs  31  and gaps, or “hollows”  32 . 
     Similar to previous descriptions, the tabs  31  of the bottom plate  30  correspond, in dimensions and spacing, to the rear notches  81 ( a ) of the housing  80 . while the hollows  32  of the bottom plate  30  correspond, in dimensions and spacing, to the front ridges  82  and rear ridges  82 ( a ) of the housing  80 . In this manner, the bottom plate  30 , when fitted and joined to the housing  80 , provides a series of extremely, tight, interlocking lateral junctions. 
     The upper channel cutout  37 , shown in  FIG. 7 . extends downward from its neck  37 ( a ) to expand into a lower bay cutout  38 . line bay cutout  38  comprises width dimensions  38 ( b ) equivalent to the lateral dimensions of the reinforcement brace  44  of the slide  40 . The upper channel cutout  37  manifests a neck  37 ( a ) which, in operation, is clamped onto the top notch  71  of the modified strike plate  76 . The lower bay cutout  38  manifests an upper travel limit  38 ( a ) which corresponds to the upper travel limit of the reinforcing brace  44 , as it moves upward attached to the slide  40 . At this travel limit  38 ( b ), the reinforcing brace  44  is stopped from further movement. This limit, in turn, places the flange  43  of the reinforcing brace  44  (see  FIG. 14  and  FIG. 15 ) in a fully clamped position against the lower bottom notch  72  of the modified strike plate  76 , as shown in  FIG. 1 ,  FIG. 2A , and more readily, in  FIG. 10 . 
       FIG. 7A  depicts an internal view of the housing  80 , further showing the continuous pattern of alternating notches  81  and front ridges  82  of the front edges of the housing  80 . As a means of further clarifying the relative positioning of components of the compartment  3 , the rear edges of the housing  80  are shown placed in juxtaposition atop the bottom plate  30 . Notably, there is shown the two co-axially paired sets of cylinder head setscrews  17 , and their knurled edges  17 ( a ) utilized for the purpose of guiding the movement planar slide  40  (not shown) once it is positioned up and down within the compartment  3 . Further, the adjustably-sized channel cutout  37 , its rounded neck  37 ( a ). and the extended bay cutout  38  are shown. The reinforcing brace  44  (not shown), conjoined to the slide  40 , has a width dimension corresponding to the width  38 ( b ) of the bay cutout  38 . 
       FIG. 8  illustrates a view of the bottom plate  30  superimposed against the top plate  10  (out of view), and further shows a portion of the mortise cylinder  5 t installed into the top plate  10 . The tail piece  20  (as shown in  FIG. 9 ) has been rotated by the control key  57  (out of view) causing the rod  21  to push downward on the racetrack pattern  41  (shown by dashed lines), thereby moving the reinforcing brace  44  into the unlocked configuration of the compartment  3 . In this configuration, live maximum dimension (A) of the channel cutout  37  is achieved, extending from the channel neck  37 ( a ) to the lop “flange”  43  of the reinforcing brace  44 . 
       FIG. 9  depicts the position of the rod  21  of the tailpiece  20 . the tailpiece  20  having been rotated by the key  58  of the mortise cylinder  51  so as to cause lire slide  40  and reinforcing brace  44  to travel downward into the unlocked position (shown in  FIG. 8 ) of the compartment  3 . The rod  21  is continuously confined to the interior of the racetrack pattern  41 , (more clearly visible in  FIG. 11 ). 
     In  FIG. 10 , as similar to  FIG. 8 , there is seen as a view of the bottom plate  30  located in close juxtaposition to the top plate  10  (out of view). The slide  40  and its permanently attached reinforcement brace  44  are shown having been manually positioned upward into the locked configuration of the compartment  3 . This is due to a user having rotated the control key  57  clockwise (the direction of locking), causing the rod  21  of the tailpiece  20  to rotate, in a parabolic path, while sliding along the racetrack pattern  41 , thereby pushing the racetrack pattern  41  upward. As a result, the entirety of the slide  40  glides in abutment to the surface of the bottom plate  30 , necessarily forcing the reinforcement brace  44  and its sculpted flange  43  upward. 
     This repositioning of the slide  40  simultaneously places the restraining brace  44  in a position to form the minimum dimension (A) of the channel cutout  37 , between the flange  43  of the restraining brace  44  and the neck  37 ( a ) of the channel cutout  37 . The slide  40 , during its ongoing movement back-and-forth, is guided in close parallel proximation to the inner surface of the bottom plate  30  by means of four knurled heads  17 ( a ) which are integral to the cylinder-head setscrews  17  (ref.  FIG. 7A ,  FIG. 8 , and  FIG. 10 ). 
     This travel of the slide  40  and reinforcing brace  44 , as shown in  FIG. 10  renders the locked, secure configuration of the compartment  3 . At this juncture, a user has turned the control key  57  clockwise, causing the slide  40  and its reinforcement brace  44  to diminish the length of the upper channel  37 . This results in a locked configuration because the neck  37 ( a ) and the flange  43  are forced to form a rigid, powerful, clamping force simultaneously upon the top notch  71  and bottom notch  72 , respectively, of the modified strike plate  70 . 
     The compartment  3  then becomes fully flush with the door  60  and doorframe  68 . The resultant condition is that the locked door guard assembly  2  and the compartment  3  barricade the door  60  against all attempts to force or break the door  60  out of the doorframe  68 . The locked configuration is the only configuration of the compartment  3  by which the control key  57  may be removed from the keyway  58 . 
       FIG. 11  depicts the position of the rod  21  of the tailpiece  20 , the tailpiece  20  having been rotated by turning of the control key  57  and the keyway  58  within the mortise cylinder  51  so as to cause the slide  40  and reinforcing brace  44  to travel upward into the locked position (shown in  FIG. 10 ) of the compartment  3 . 
       FIG. 12  is a three-dimensional direct frontal view of the controlling surface  20 ( a ) of the tailpiece  20 , further showing the rod  21 , orthogonally and permanently attached to the controlling surface  20 ( a ) of the tailpiece  20 . Two machine screws  16  are inserted into apertures for attachment of the keyway  58  of the mortise cylinder  51 . A longitudinal junction aperture  22  is the portion of the tailpiece  20  through which the key way  58  for the control key  57  extends. The second, or abutting surface  20 ( b ) of the tailpiece moves abuttingly to the inner surface of the mortise lock  51  in locking and unlocking functions. 
     The knurled cylinder head setscrew  17  with a knurled head  17 ( a ), utilized in fastening, through apertures  83 , into the sides of the housing  80 , are depicted in  FIG. 13 . The knurled heads  17 ( a ), function so as to guide the movement of the slide  40  within the compartment  3 , and specifically, in a sliding motion parallel to the bottom plate  30 . 
       FIG. 14  shows a view of the outer surface of the reinforcing brace  44 , being permanently affixed to the outer surface of the slide  40 . Further shown is the open racetrack pattern  41  of the slide  40  proximate the lower edge of live reinforcing brace  44 . The racetrack pattern  41  accommodates the rod  21  of the tailpiece  20 . The flange  43  of the reinforcing brace  44  is also shown. The indicated dimension,  30 ( b ), is the width of the reinforcing brace  44 , which also corresponds to the width of the bay cutout  38 . 
       FIG. 15  depicts a view of the slide  40  opposite to the side shown in  FIG. 14 , showing the inner, surface of the slide  40 , wherein the flange  43  of the reinforcing brace  44  is again shown. Further, the crescent  45  of the slide  40  is also shown. The crescent  45  allows sufficient room to accommodate the lower shoulder  73 ( b ) of the modified strike plate  70  when the compartment  3  of the door security kit  1  is in the locked configuration. 
     The flange  43  is the primary structural component used for adjusting the dimension of the channel cutout  37  whenever a user turns the control key  57 , causing movement of the slide  40  and its corresponding reinforcing brace  44  and flange  43 . The rod  21  of live tailpiece  20 . during functional operation, travels from position  41 ( a ) to position  41 ( b ) of the racetrack pattern  41 , thereby moving the slide  40  up and down within the compartment  3 . In the fully locked configuration, the flange  43  is clamped against the bottom notch  72  of the modified strike plate  70 . as shown in  FIG. 1 . 
       FIG. 16  depicts a perspective view of the modified strike plate  70 , further showing the bolt-hole  75 , the upper shoulder  73 ( a ) and corresponding top notch  71 , the lower shoulder  73 ( b ) and corresponding bottom notch  72 , the elongated lip  76 . and two countersunk aperturcsl 2 .  FIG. 17  is a downward-looking profile view of the modified strike plate  70 , where the upper shoulder  73 ( a ), upper notch  71 , inner faceplate  77 , and outer faceplate  78  are shown. Two counter-sunk apertures  12  are in view, which are used to attach the modified strike plate  70  to the corresponding door  60 . 
     The modified strike plate  70 , shown in  FIG. 16  and  FIG. 17 , is a critical component of the Door Security Kit  1 . The modified strike plate  70  is constructed as a predominantly planar slab of metal, the slab  73  further defined by an inner faceplate  77  and an outer faceplate  78 , as shown in  FIG. 17 . At a mutual edge of the inner faceplate  77  and the outer faceplate  78 , an extension of both these surfaces curvilinearly forms a rounded, elongated lip  76 . The elongated lip  76  is further comprised of an upper shoulder  73 ( a ), a lower shoulder  73 ( b ), a top notch  71 . and a bottom notch  72 , as shown in  FIG. 1 ,  FIG. 16 , and  FIG. 17  herein. Symmetrically machined through both the inner faceplate  77  and the outer faceplate  78  is a bolt-hole  75  for acceptance of a deadbolt  64  or latch-bolt. 
     The modified strike plate  70  must be mounted onto a metal door frame  68 , so as to orient the longitudinal dimension of the elongated lip  76  parallel to the from edge of the protecting door  60 . This arrangement, in turn, causes the lip  76  to protrude into the protected room  63 . This arrangement is more readily understood by viewing  FIG. 1  and  FIG. 2A . The installation of the modified strike plate  70  also exposes the top notch  71  and bottom notch  72 , which are integral to the elongated lip  76 . In operation of the floor Security Kit  1 , the first sequential step is for a user to place the upper channel  37  (shown in  FIG. 1  and  FIG. 3 ) and a portion of the bay cutout  38  of the bottom plate  30  of the compartment  3  onto the entirely of the length of the elongated lip  76  of the modified strike plate  70 . The Door Security Kit  1  will not function as designed, without the specially-designed modified strike plate  70 . 
     An overhead view of one embodiment of a hanger  90  is pictured in  FIG. 18 . further showing an integral pillar  95 . The pillar  95  provides a rigid lengthwise mechanism against which the upper channel cutout  37  of the bottom plate  30  can be clamped for stowage of the compartment  3 . The positioning of the compartment  3 , when retained within upon hanger  90  is shown by dashed lines. 
       FIG. 19  depicts a perspective view of the outside surface  94  of the hanger  90 . The hanger may be attached to a corner structure, a desk, or a doorframe proximate the protecting door  60 . Once so attached, the channel cutout  37  of the compartment  3  may be clamped onto the pillar  95  of the hanger  90 . Also shown are a plurality of attachment holes  92  for insertion of appropriate fasteners. 
     For rapid response to an immediately threatening situation at the protecting door  60 , the hanger  90  should be mounted on the wall immediately adjacent to the doorframe  68  of the protecting door  60 . As an operational feature to be noted, the control key  57  cannot be removed from the mortise cylinder  57  unless the door guard assembly  2  is in the locked position, that is, the upper channel cutout  37  is adjusted to its minimum dimension. A user may place the door guard assembly  2  on the modified ASA/ANSI strike plate  70  and allow the door guard assembly  2  to rest on the top notch  71  of the modified strike plate  70 . 
     By design, the control key  57  cannot be removed from the keyway  58  unless the control key  57  is turned clockwise so as to place the locking plate  40  into the locked configuration. Once that is accomplished, the control key  57  is removable. 
     In summary, under extreme circumstances, where security and protection from the possible breaking of the door lock of a door  60  is necessary for human safety, the Door Security Kit  1  will provide crucial fortification. A user must first access the device compartment  3  from its stowed location, and ensure that the door guard assembly  2  is in the unlocked configuration. The user next places the adjustably-sized channel cutout  37  of the Door Security Kit  1  directly onto the modified strike plate  70  in the door jamb  62 , then turn the control key  57  clockwise to establish the clamped, locked configuration of the Door Security Kit  1 . 
     While preferred embodiments of the present inventive device have been shown and disclosed herein, it will be obvious to those persons skilled in the art that such embodiments are presented by way of example only, and not as a limitation to the scope of the inventive concept. Numerous variations, changes, and substitutions may occur or be suggested to those skilled in the art without departing from the intent, scope, and totality of this inventive concept. Such variations, changes, and substitutions may involve other features which are already known per se and which may be used instead of, in combination with, or in addition to features already disclosed herein. Accordingly, it is intended that this inventive concept be inclusive of such variations, changes, and substitutions, as described by the scope of the claims presented herein.