referring first to fig1 , a bookcase 10 according to the present invention is shown . the bookcase may have shelves 12 for storing books and other items that might be present in a typical classroom , office or other location where the bookcase might be in use . other arrangements or configurations of shelves , cabinets , doors are possible and within the scope of the invention . below the shelves 12 may be a base or plinth 14 used to conceal , either partially or completely , wheels or casters 16 for moving the bookcase from its normal position to a location blocking the doorway to the room . the rear panel of the bookcase 18 includes armored , bullet - resistant or ballistic resistant material , either alone or in combination with other materials . the bookcase may include a doorknob recess , opening or cutout 20 to allow the bookcase to be positioned flush against a door without interference from the doorknob or handle . a locking mechanism 22 is also illustrated for securing both sides of the bookcase to the door frame , doorway or wall when the bookcase is being used to block the doorway to the room . the bookcase base 14 may also include an opening 54 and a lever or control handle 52 for engaging or retracting the wheels 16 at the bottom of the bookcase . having retractable wheels at the bottom of the bookcase may be advantageous , since the bookcase according to the invention is preferably constructed to appear and function as a typical bookcase . besides a bookcase 10 , other items of furniture ( not shown ) may also be constructed in accordance with the invention , including without limitation a wardrobe , a cabinet , a storage container , a shelf system , a large wall hanging such as a map , chalkboard , whiteboard or poster board or a desk or table with a large , flat top surface . the furniture piece may be constructed from wood , resin , metal , fiberboard , plastic , composites , carbon fiber or any other materials known and used for construction of such items . the panel 18 of armored , bullet - resistant or ballistic - resistant material may similarly be constructed from steel , titanium or other metals , fiberglass , composites , resins , carbon fiber , kevlar ® and other aramid fibers , boron carbide , silicon carbide , aluminum oxide , glass , plastic and any other materials known and used for construction of such items . the terms “ armored ,” “ bullet - resistant ” and “ ballistic - resistant ” are used interchangeably herein and do not refer to any particular technical standard for bullet - resistance , puncture - resistance or similar protection , such as for example underwriters laboratory bulletin # 752 ( which describes eight levels of ballistic - resistant material ). instead , all materials known and used for providing any level of protection or resistance to bullets , ballistics , puncturing , stabbing , piercing or cutting from any type of weapon are within the scope of this invention . the panel 18 of armored material may also include an opening or hole 21 to be used as a viewing port . an occupant in the room might use the viewing port for looking through the armored back panel to check on the identity of someone seeking to enter the room or to see what is happening outside the blocked entrance to the room . preferrably the viewing port is aligned with the typical location of a door &# 39 ; s view window so that the occupant can remain behind the armored panel and look through the viewing port to see outside the room &# 39 ; s entrance . the viewing port may be installed in the armored panel when the furniture piece is originally manufactured or may be cut into the armored panel when the furniture piece is installed in its intended location . the viewing port may be a traditional apartment or hotel door “ peep hole ” or a larger opening that may or may not be covered . the panel 18 of armored material may also be constructed so that it can be extended or expanded to cover a larger area than it would in its normal , collapsed or “ storage ” configuration . for example , on either side of the furniture piece 10 , a second and third armored panel ( not shown ) would also be attached with locking hinges . in its normal , “ storage ” configuration , the additional panels might be positioned so that they appear to be part of a normal piece of furniture . but when the furniture piece is locked into a position blocking the entrance to the room , the second and third armored panels might be folded outwards and locked into their “ extended ” position , thereby blocking the narrow , vertical side - light windows sometimes used with certain doors . in this way , the entire entrance way to the room may be blocked , including the door itself and any accompanying side - light windows , with an armored panel . the doorknob opening or cutout 20 shown in fig1 may also be constructed as a partially or completely enclosed concavity or recess ( not shown ) in the rear panel 18 and other parts of the furniture piece . the doorknob would fit within the concavity or recess when the furniture piece was positioned next to the door , and the concavity or recess would partially or completely enclose or surround the doorknob , preferably with some form of armored or bullet - resistant materials . the concavity or recess might be formed entirely in the armored panel 18 or might be formed with changes in the shape or dimensions of the armored panel , shelves 12 , side panels and other parts or elements of the furniture piece 10 . enclosing the doorknob within an armored or bullet - resistant recess may have an advantage in stopping or inhibiting a bullet fired at the doorknob from the other side of the door . the terms “ doorknob ,” “ door handle ,” “ knob ” and “ handle ” are used interchangeably herein and refer to door knobs , door handles , door levers , door locks , window handles , window pulls and any other type of knob , handle or mechanism that protrudes from a door , window or other opening , entrance or entryway to a room . the wheels or casters 16 shown in fig1 may be any type of mobility mechanism known and used for enabling the repositioning or improving the mobility of a furniture piece . the mobility mechanism may be fixed or retractable , as shown in fig1 . among many other examples , the furniture piece may include rollers , cylinders , balls , wheels , spheres or similar shapes of any kind that would permit the piece to be rolled or repositioned more easily in the case of an emergency . in addition to or instead of a rolling mechanism , the furniture piece may include smooth skids or slides to relieve friction between the furniture piece and the floor and thereby facilitate movement of the furniture piece . other known examples of rolling or mobility mechanisms for furniture are all within the scope of the invention . referring next to fig2 , a locking mechanism 22 for the bookcase 10 of fig1 is illustrated in greater detail . the locking mechanism 22 includes a reinforced plate 24 of metal or other material designed to withstand a force applied to it , the plate 24 being secured to the side of the bookcase 10 with reinforced fasteners or bolts 28 . attached to the plate 24 is a reinforced ring or eyelet 26 to which one may attach a hook 30 of a hook - and - cable piece 32 . the other hook 34 may be attached to a reinforced ring or eyelet 36 mounted on a similar , reinforced plate 38 attached to the door frame , doorway or nearby wall 39 using reinforced fasteners 40 . a similar locking mechanism 22 would be located on the opposite side of the furniture piece so that both sides could be secured to the door frame , doorway or nearby wall , thereby preventing entry into the room even against the determined efforts of an armed intruder . many other arrangements or configurations of a locking mechanism 22 are possible , all of which are within the scope of the invention . among many other examples , the locking mechanism can include chains , cables , metal rods or bars , barricades , deadbolts , cremone bolts and other multipoint bolting systems . the locking mechanism may be secured to the door , the door frame , the doorway and its surrounding structure , the walls nearby the doorway and their surrounding structure , the floor , the ceiling or any combination of these . in fact , the furniture piece may include a number of alternative locking mechanisms to enable the piece to be used with a variety of differently configured rooms , doors and doorways . the locking mechanism &# 39 ; s hooks 30 , 34 may be simple , open hooks as depicted in fig1 - 3 or may further include a spring - loaded gate or retaining mechanism , such as a carabiner . the locking mechanism may include a metal bar or bars that are secured to the furniture piece and sized to fit securely within a receiving hole in the floor , walls or ceiling of the room . all configurations of mechanical locks , bolts , chains , cables , bars , rods or barricades are within the scope of the invention . referring next to fig3 , an alternative locking mechanism for the bookcase 10 of fig1 is illustrated . in this embodiment , the hook - and - cable piece 32 is sized so that it can reach around the entire width of the bookcase 10 and be secured with hooks 34 into reinforced rings or eyelets 36 attached to plates 38 mounted to the door frame , doorway or wall on either side of the bookcase 10 . to keep the hook - and - cable piece in position when locked , the bookcase 10 also includes reinforced hooks 42 mounted to plates 24 secured to the sides of the bookcase . using this configuration , the bookcase could be quickly and securely fastened to the door and doorway , thereby covering ( either partially or completely ) an otherwise vulnerable entryway to the room with an armored panel 18 . referring next to fig4 , the doorknob opening or cutout 20 for the bookcase 10 of fig1 and 3 is illustrated in greater detail . the doorknob opening 20 permits the bookcase to be positioned and locked substantially flush against an existing doorway with the doorknob or door handle 44 protruding through the opening in the bookcase &# 39 ; s rear panel 18 . preferably , the bookcase &# 39 ; s shelves 12 may be adjustable in height or removable so that the shelves can be positioned or removed so as not to block the knob or handle 44 . the opening 20 may be created in the rear panel 18 when the bookcase is originally manufactured , or the opening may be created later when the bookcase is being installed in a particular room to accommodate the position of the doorknob or door handle for that room . referring finally to fig5 , the bottom of the bookcase 10 of fig1 and 3 is illustrated in greater detail in a bottom elevational view . the four wheels or casters 16 are mounted to a supporting chassis 48 in a manner that permits them to swivel as the bookcase 10 is being moved . the chassis 48 is attached to the underside of the bookcase through moveable or extendable support pieces 50 that can retract the chassis 48 either partially or completely within the bookcase &# 39 ; s base or plinth 14 . the chassis 48 is also attached to a lever or control handle 52 that extends through an opening 52 in the base 14 . moving the lever or control handle from a first position to a second position causes the support pieces 50 and the chassis 48 to extend a position from within the bookcase &# 39 ; s base 14 such that the wheels or casters 16 are in contact with the floor beneath the bookcase 10 and supporting the bookcase &# 39 ; s weight . preferably the lever or control handle also includes some form of lock , latch or engagement so that the chassis 48 and wheels 16 can be fixed or locked in this “ engaged ” position . in this manner , an occupant in the room would be able to pull the lever or control handle 52 , lower and lock the wheels into their lowered , engaged position , and then roll the bookcase 10 on its wheels to a position substantially flush against the door or doorway of the room , where it can then be locked into position with the locking mechanism 22 ( not shown ). the invention has been illustrated by detailed description and examples of the preferred embodiments . various changes in form and detail will be within the skill of persons skilled in the art . therefore , the invention must be measured by the claims and not by the description of the examples or the preferred embodiments .
a furniture piece includes at least one armored panel and at least one locking mechanism wherein the at least one locking mechanism permits the at least one armored panel to be secured to a location adjacent to and substantially blocking at least one entrance of a room . the furniture piece may further include a furniture mobility mechanism , such as a wheel , a caster , a roller , a bearing , a sphere , a hemisphere , a cylinder , a skid or a slide . the furniture mobility mechanism may be selectable between a first “ storage ” position and a second “ mobility ” position , the second “ mobility ” position configured to assist in repositioning the furniture piece to the location adjacent to and substantially blocking the at least one entrance of the room . the furniture piece may be a bookcase , a wardrobe , a cabinet , a storage container , a shelf system , a wall hanging , a chalkboard , a whiteboard , a poster board , a desk and a table , and the locking mechanism may include a hook at a ring .