Patent Publication Number: US-11041333-B2

Title: Door security system and method of using same

Description:
CROSS-REFERENCE AND INCORPORATION BY REFERENCE 
     This patent application claims the domestic priority of U.S. Provisional Patent Application Ser. No. 61/812,410, filed Apr. 16, 2013, and entitled “Security Apparatus And Method For Doors”, U.S. Provisional Patent Application Ser. No. 61/812,410 is hereby incorporated by reference in its entirety. 
    
    
     FIELD OF THE INVENTION 
     The invention relates to a security system and, more particularly, a door security system and a method of using same, 
     BACKGROUND OF THE INVENTION 
     Security for residential homes and commercial buildings, offices, storage, schools, universities, and the like, is of concern for all the owners and/or occupants of those properties and particularly in areas where high concentrations of breaking and entering or other crimes occur. The security for these types of real estate properties is riddled with various security inventions or devices. All of these various security inventions or devices are well-known in the prior art and, depending upon the criminal, provide a deterrent to an unauthorized entry and/or at least provide an obstacle to the unauthorized entry that may facilitate a sufficient amount of time for a third party to witness the crime and report it to the proper authorities before the criminal can commit further crimes related to the real estate property or occupants of the real estate property. 
     In many instances, it may be desirable to prevent a door from being opened so as to prevent (or at least delay) an unauthorized person from entering the room and gaining access to the people and/or items in the room. There are a number of security devices that can be installed on a door to prevent the opening of the door, including dead bolts, chain locks, alarm systems, etc. While many of these security devices may assist in at least delaying an unauthorized person from entering a room, these security devices likely will not prevent an unauthorized person from entering a room. There are further security devices that may be installed across a door frame or secured to a floor that can prevent a door from being opened into the room, but these security devices are not known to be able to operate effectively when the door is opened outwardly. Furthermore, these types of security devices are generally prohibited under most, if not all, jurisdictional fire codes because they cannot be disengaged or removed from outside of the room and, therefore, such security devices are not usable in certain environments which must comply with jurisdictional fire codes, such as schools and office buildings. 
     The present invention provides a door security system, and a method of using same, which seeks to overcome the disadvantages of prior art door security systems. 
     SUMMARY OF THE INVENTION 
     A first preferred embodiment of the invention provides a door security system for use in connection with a door. The door security system has a security apparatus and a release mechanism. The security apparatus has a floor engaging portion and a door blocking portion. The security apparatus is provided in a first space adjacent to a first side of the door. The door blocking portion is configured to block the door from opening into the first space. The floor engaging portion is configured to engage a floor provided in the first space in a manner which retains the security apparatus in place relative to the floor. The release mechanism has a handle portion and a security apparatus engaging portion. The handle portion is provided in a second space adjacent to a second side of the door. The security apparatus engaging portion is connected to the handle portion and extends into the first space via a slot provided between a bottom of the door and the floor. The handle portion is configured to be manipulated to cause the security apparatus engaging portion to engage the security apparatus in a manner which causes the floor engaging portion to disengage from the floor. 
     The first embodiment of the door security apparatus preferably further includes a receiving assembly. The receiving assembly is provided in the floor provided in the first space. The receiving assembly is configured to receive the floor engaging portion of the security apparatus therein, thereby allowing the floor engaging portion to engage the floor provided in the first space. 
     The first embodiment of the door security apparatus preferably further includes an attachment assembly. The attachment assembly is configured to be secured to the door and to provide a slot between the first side of the door and the attachment assembly. The door blocking portion of the security apparatus is configured to be positioned within the slot when the floor engaging portion of the security apparatus is engaged with the floor. The attachment assembly is configured to block the door from opening into the second space. 
     The first embodiment of the door security apparatus the security apparatus preferably has a handle portion. The handle portion is connected to the door blocking portion of the security apparatus. 
     A second preferred embodiment of the invention provides a door security apparatus. The door security apparatus includes a security apparatus having a first portion which is configured to block a door from being opened into a first space, and a second portion which is configured to engage a floor inside the first space. The first portion has a door facing surface and a first space facing surface. The second portion comprises a pair of pins which are secured to the room facing surface of the first portion and which extend below the first portion to engage the floor inside the first space, whereby, when the second portion is engaged with the floor, the security apparatus inhibits the door from opening into the first space. 
     The first portion of the second embodiment preferably includes a floor stop member which extends inwardly from the space facing surface, and away from the door facing surface. The floor stop member is positioned between the pair of pins. 
     The security apparatus of the second embodiment preferably further includes a support plate which is secured to the room facing surface and which extends inwardly from the room facing surface, and away from the door facing surface. The support plate is positioned between the pair of pins, and above the stop member such that a channel is defined between the support plate and the stop member. 
     The door security system of the second embodiment preferably includes a release mechanism which is configured to be manipulated from a second space which is provided on an opposite side of the door from the first space. The release mechanism is configured to be engaged within the channel of the security apparatus to disengage the second portion of the security apparatus from the floor. 
     The door security system of the second embodiment preferably includes a pair of sleeves which each have an aperture provided therethrough. Each sleeve is configured to be positioned within a corresponding hole formed in the floor of the first space. Each sleeve is configured to receive a portion of one of the pins therein, thereby engaging the pins with the floor. 
     The security apparatus of the second embodiment preferably further includes a third portion which is secured to the first portion. The third portion has an aperture provided therethrough such that the third portion is configured to act as a handle portion of the security apparatus. Each pin is secured to the third portion and the aperture is provided between the pins, 
     The door security system of the second embodiment preferably further includes an attachment assembly which is configured to be secured to the door and to provide a slot between the door and the attachment assembly. The first portion of the security apparatus is configured to be positioned within the slot when the second portion of the security apparatus is engaged with the floor, thereby preventing the door from opening into the second space. 
     The security apparatus of the second embodiment preferably further includes a third portion Which is secured to the first portion. The third portion has an aperture provided therethrough such that the third portion is configured to act as a handle portion of the security apparatus. The third portion extends from a top of the first portion in an upward and inward manner from the room facing surface, and away from the door facing surface. 
     A third preferred embodiment of the invention provides a method of using a door security system. The method includes the steps of: providing a door which separates a first space from a second space; providing a floor in the first and second spaces, the door being positioned over the floor, the door being separated from the floor to define a gap between the door and the floor; providing a security apparatus having a floor engaging portion and a door blocking portion, the security apparatus being provided in the first space adjacent to a first side of the door; providing a mechanism having a handle portion and a security apparatus engaging portion, the security apparatus engaging portion being connected to the handle portion, the mechanism being provided in the second space; engaging the floor engaging portion of the security apparatus with the floor provided in the first space, thereby retaining the security apparatus in place relative to the floor, and thereby causing the door blocking portion to block the door from opening into the first space; moving the security engaging portion of the mechanism through the gap to provide that at least a portion of the security apparatus engaging portion of the mechanism is positioned in the second space; and manipulating the handle portion of the mechanism to cause the security apparatus engaging portion of the release mechanism to engage the security apparatus in a manner which causes the floor engaging portion to disengage from the floor in the first space. 
     The method of the third embodiment further preferably includes the steps of: providing a receiving assembly in the floor provided in the first space; and engaging the floor engaging portion of the security apparatus with the receiving assembly, thereby retaining the security apparatus in place relative to the floor, and thereby causing the door blocking portion to block the door from opening into the first space. 
     The method of the third embodiment further preferably includes the steps of: providing an attachment assembly; securing the attachment assembly to the door to provide a slot between the first side of the door and the attachment assembly; and positioning the security apparatus within the slot, thereby causing the security apparatus and the attachment assembly to block the door from opening into the second space. 
     A fourth embodiment of the invention provides a method of using a door security system. The method includes the steps of: providing a door which separates a first space from a second space; providing a floor in the first and second spaces, the door being positioned over the floor, the floor having a pair of holes therein in the first space; providing a security apparatus of the door security system in the first space, the security apparatus comprising first and second portions, the first portion having first and second opposite surfaces, the second portion has a pair of pins which are secured to the second surface of the first portion and which extend below the first portion; positioning the first surface of the first portion of the security apparatus to face the door; positioning the pair of pins of the security apparatus over the pair of holes provided in the floor of the first space; and lowering the pair of pins of the security apparatus into the pair of holes provided in the floor of the first space, thereby engaging the security apparatus with the floor, and thereby allowing for the first portion of the security apparatus to block the door from opening into the first space. 
     The method of the fourth embodiment further preferably includes the steps of: providing the first portion with a floor stop member which extends inwardly from the second surface of the first portion, and away from the, first surface of the first portion, the floor stop member being positioned between the pair of pins; and lowering the pair of pins of the security apparatus into the pair of holes provided in the floor of the first space until the floor stop member is prevented from further downward movement relative to the floor of the first space. 
     The method of the fourth embodiment further preferably includes the steps of: providing the security apparatus with a support plate which is secured to the first surface of the first portion and which extends inwardly from the first surface of the first portion, and away from the second surface of the first portion, the support plate being positioned between the pair of pins, the support plate being positioned above the stop member such that a channel is defined between the support plate and the stop member; providing a gap between a bottom of the door and the floor; providing a release mechanism having a handle portion and a security apparatus engaging portion; manipulating the release mechanism from the second space to position the handle portion in the second space and the security apparatus engaging portion in the first space, with the release mechanism spanning the gap between the bottom of the door and the floor; manipulating the handle portion of the release mechanism to cause the security apparatus engaging portion to be positioned within the channel of the security apparatus; and manipulating the handle portion of the release mechanism to cause the security apparatus engaging portion to engage the security apparatus within the channel to disengage the pins of the security apparatus from the floor in the first space. 
     The method of the fourth embodiment preferably further includes the steps of: providing a pair of sleeves which each have an aperture provided therethrough; positioning the pair of sleeves into the pair of holes provided in the floor of the first space; and lowering the pair of pins of the security apparatus into the apertures of the pair of sleeves, thereby engaging the security apparatus with the floor, and thereby allowing for the first portion of the security apparatus to block the door from opening into the first space. 
     The method of the fourth embodiment preferably further includes the steps of: providing an attachment assembly; securing the attachment assembly to the door to provide a slot between the door and the attachment assembly, the slot being provided in the first space and being positioned above the pair of holes in the floor in the first space; positioning the security apparatus over the slot; positioning the first surface of the first portion of the security apparatus to face the door; positioning the pair of pins of the security apparatus over the pair of holes provided in the floor of the first space; and lowering the pair of pins of the security apparatus through the slot and into the pair of holes provided in the floor of the first space, thereby engaging the security apparatus with the floor, securing the security apparatus within the slot, allowing for the first portion of the security apparatus to block the door from opening into the first space, and allowing for the attachment assembly and the security apparatus to block the door from opening into the second space. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       For a more complete understanding of the disclosure, reference may be made to the following detailed description and accompanying drawings wherein like reference numerals identify like elements in which: 
         FIG. 1  is a perspective view of a main plate of a security apparatus forming part of a door security system of a preferred embodiment of the invention; 
         FIG. 2  is a top view of the main plate illustrated in  FIG. 1 ; 
         FIG. 3  is a front view of the main plate illustrated in  FIG. 1 ; 
         FIG. 4  is a side view of the main plate illustrated in  FIG. 1 ; 
         FIG. 5  is a perspective view of a pin of the security apparatus forming part of the door security system of the preferred embodiment of the invention; 
         FIG. 6  is a side view of the pin illustrated in  FIG. 5 ; 
         FIG. 7  is a bottom view of the pin illustrated in  FIG. 5 ; 
         FIG. 8  is a perspective view of a support plate of the security apparatus forming part of the door security system of the preferred embodiment of the invention; 
         FIG. 9  is a top view of the support plate illustrated in  FIG. 8 ; 
         FIG. 10  is a side view of the support plate illustrated in  FIG. 8 ; 
         FIG. 11  is a perspective view of the security apparatus forming part of the door security system of the preferred embodiment of the invention; 
         FIG. 12  is a top view of the security apparatus illustrated in  FIG. 11 ; 
         FIG. 13  is a front view of the security apparatus illustrated in  FIG. 11 ; 
         FIG. 14  is a side view of the security apparatus illustrated in  FIG. 11 ; 
         FIG. 15  is a perspective view of a sleeve forming part of the door security system of the preferred embodiment of the invention; 
         FIG. 16  is a bottom view of the sleeve illustrated in  FIG. 15 ; 
         FIG. 17  is a front view of the sleeve illustrated in  FIG. 15 ; 
         FIG. 18  is a perspective view of a strap plate of an attachment assembly forming part of the door security system of the preferred embodiment of the invention; 
         FIG. 19  is a front view of the strap plate illustrated in  FIG. 18 ; 
         FIG. 20  is a bottom view of the strap plate illustrated in  FIG. 18 ; 
         FIG. 21  is a perspective view of a washer plate of the attachment assembly forming part of the door security system of the preferred embodiment of the invention; 
         FIG. 22  is a rear view of the washer plate illustrated in  FIG. 21 ; 
         FIG. 23  is a side view of the washer plate illustrated in  FIG. 21 ; 
         FIG. 24  is a perspective view of a bolt of the attachment assembly forming part of the door security system of the preferred embodiment of the invention; 
         FIG. 25  is a side view of the bolt illustrated in  FIG. 24 ; 
         FIG. 26  is a top view of the bolt illustrated in  FIG. 24 ; 
         FIG. 27  is a perspective view of a nut of the attachment assembly forming part of the door security system of the preferred embodiment of the invention; 
         FIG. 28  is a bottom view of the nut illustrated in  FIG. 27 ; 
         FIG. 29  is a side view of the nut illustrated in  FIG. 27 ; 
         FIG. 30  is a perspective view of a release mechanism forming part of the door security system of the preferred embodiment of the invention; 
         FIG. 31  is a top view of the release mechanism illustrated in  FIG. 30 ; 
         FIG. 32  is a side view of the release mechanism illustrated  FIG. 30 ; 
         FIGS. 33-39  illustrate the initial installation of the door security system of the preferred embodiment of the invention; 
         FIG. 40  illustrates the installation and operation of the door security system of the preferred embodiment of the invention in connection with an inwardly opening door; and 
         FIGS. 41-54  illustrate the installation and operation of the door security system of the preferred embodiment of the invention in connection with an outwardly opening door. 
     
    
    
     DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENT 
     While the present disclosure is susceptible to various modifications and alternative forms, certain embodiments are shown by way of example in the drawings and these embodiments will be described in detail herein. It will be understood, however, that this disclosure is not intended to limit the invention to the particular form described, but to the contrary, the invention is intended to cover all modifications, alternatives, and equivalents falling within the spirit and scope of the invention defined by the appended claims, 
     A door security system  100  is provided which includes a security apparatus  102 , a pair of sleeves  104 , an attachment assembly  106 , and a release mechanism  108 . 
     The security apparatus  102  is best illustrated in  FIGS. 1-14 . The security apparatus  102  includes a main plate  110 , a pair of pins  112 , and a support plate  114 . 
     As best illustrated in  FIGS. 1-4 , the main plate  110  includes a middle portion  116  having a front surface  118  and a rear surface  120 . The middle portion  116  has a top edge  122 , a bottom edge  124 , and a pair of side edges  126   a,    126   b  which connect the top edge  122  to the bottom edge  124 . The bottom edge  124  has a length which is preferably less than a length of the top edge  122 . Each side edge  126   a,    126   b  preferably has a first side edge portion  128   a,    128   b,  a second side edge portion  130   a,    130   b,  and a third side edge portion  132   a,    132   b.  The first side edge portions  128   a,    128   b  extend vertically downwardly front opposite ends of the top edge  122 . The third side edge portions  132   a,    132   b  extend vertically upwardly from opposite ends of the bottom edge  124 . The second side edge portions  130   a,    130   b  curve downwardly and inwardly from the first side edge portions  128   a,    128   b  to the third side edge portions  132   a,    132   b.    
     The main plate  110  includes a top portion  134 . The top portion  134  has a front surface  136  and a rear surface  138 . The top portion  134  has a top edge  140 , a bottom edge  142 , and a pair of side edges  144   a,    144   b  which connect the top edge  140  to the bottom edge  142 . The top edge  140  has a length which is preferably less than a length of the bottom edge  142 . The side edges  144   a,    144   b  preferably curve downwardly and outwardly from the top edge  140  to the bottom edge  142 . An aperture  146  is preferably provided through the top portion  134  generally equidistantly between the side edges  144   a,    144   b.  The aperture  146  is preferably generally rectangular in configuration, but preferably is rounded at its corners. 
     The main plate  110  includes a bottom portion  148 . The bottom portion  148  has a top surface  150  and a bottom surface  152 . The bottom portion  148  has a front edge  154 , a rear edge  156 , and a pair of side edges  158   a,    158   b  which connect the front edge  154  to the rear edge  156 . The front and rear edges  154 ,  156  preferably have identical lengths and the top and bottom surfaces  150 ,  152  are preferably rectangular in configuration. 
     The middle, top, and bottom portions  116 ,  134 ,  148  of the main plate  110  are all preferably integrally formed. The bottom edge  142  of the top portion  134  is connected to the top edge  122  of the middle portion  116 , with the bottom edge  142  and the top edge  122  preferably having identical lengths. The top portion  134  is angled relative to the middle portion  116 , preferably at an angle of forty-five (45) degrees. The top surface  150  of the bottom portion  148  is connected to the bottom edge  124  of the middle portion  116 , such that the rear surface  120  of the middle portion  116  is generally flush with the rear edge  156  of the bottom portion  148 . The bottom portion  148  has a length which is less than a length of the bottom edge  124  of the middle portion  116  such that equal parts of the bottom edge  124  of the middle portion  116  are exposed on either side of the bottom portion  148 . The bottom portion  148  is thus angled relative to the middle portion  116 , preferably at an angle of ninety (90) degrees. 
     The pins  112  of the security apparatus  102  are best illustrated in  FIGS. 5-7 . The pins  112  include a generally cylindrical portion  160 , a generally conical portion  162 , and a generally domed portion  164 , each of which are preferably integrally formed. The generally cylindrical portion  160  has a top edge  166  which is generally formed at an angle, preferably forty-five (45) degrees, and a bottom edge  168 . The generally conical portion  162  has a top edge  170  and a bottom edge  172 , where the top edge  170  has a larger diameter than the bottom edge  172 . The generally domed portion  164  has a top edge  174  and a bottom point  176 . The bottom edge  168  of the generally cylindrical portion  160  and the top edge  170  of the generally conical portion  162  are connected to one another and preferably have the same diameter. The bottom edge  172  of the generally conical portion  162  and the top edge  174  of the generally domed portion  164  are connected to one another and preferably have the same diameter. 
     The support plate  114  of the security apparatus  102  is best illustrated in  FIGS. 8-10 . The support plate  114  includes a top surface  178  and a bottom surface  180 . The support plate  114  has a front edge  182 , a rear edge  184 , and a pair of side edges  186   a,    186   b  which connect the front edge  182  to the rear edge  184 . The front and rear edges  182 ,  184  preferably have identical lengths and the top and bottom surfaces  178 ,  180  are preferably rectangular in configuration. 
     The security apparatus  102  is formed by welding the main plate  110 , the pair of pins  112 , and the support plate  114  together. More specifically, the pins  112  are positioned on opposite sides of the bottom portion  148  of the main plate  110  so that the generally cylindrical portion  160  of each pin  112  is positioned against the front surface  118  of the middle portion  116  of the main plate  110  and such that the angled top edges  166  of the generally cylindrical portions  160  are positioned flat against the front surface  136  of the top portion  134  of the main plate  110 . The generally cylindrical portions  160  of the pins  112  are preferably slightly distanced from the side edges  158   a,    158   b  of the bottom portion  148  of the main plate  110 , and a lower portion of the generally cylindrical portions  160 , as well as the generally conical portions  162 , and the generally domed portions  164 , of the pins  112 , are positioned below the bottom portion  148  of the main plate  110 . The pins  112  are preferably welded to the main plate  110  at least at the connection of the angled top edges  166  of the generally cylindrical portions  160  to the front surface  136  of the top portion  134  of the main plate  110 . The pins  112  may further be welded to the main plate  110  at other positions as desired. 
     The rear edge  184  of the support plate  114  is positioned against the front surface  118  of the middle portion  116  of the main plate  110 , at a predefined distance above the bottom portion  148  of the main plate  110 , preferably generally in alignment with the connection of the second and third side edges  130   a,    132   a;    130   b,    132   b  of the middle portion  116  of the main plate  110 . Thus, an elongated channel  188  is defined between the top surface  150  of the bottom portion  148  of the main plate  110  and the bottom surface  180  of the support plate  114 . The support plate  114  preferably has a length which is equal to a length of the bottom portion  148  of the main plate  110 , and the support plate  114  is generally provided in general alignment with, and in parallel relation to, the bottom portion  148  of the main plate  110 . The generally cylindrical portions  160  of the pins  112  are preferably slightly distanced from the side edges  186   a,    186   b  of the support plate  114 . The support plate  114  is preferably welded to one or more of the middle portion  116  of the main plate  110  and the pins  112 . 
     The security apparatus  102  of the door security system  100  is thus formed, as illustrated in  FIGS. 11-14 . 
     The sleeves  104  of the door security system  100  are best illustrated in  FIGS. 15-17 . Each sleeve  104  is preferably formed of aluminum, but may be formed of any other suitable material. Each sleeve  104  has a shank portion  190  and a head portion  192  which are preferably integrally formed. The shank portion  190  is generally elongated and cylindrical in configuration and has a bottom end  194 , a top end  196 , and a generally cylindrical outer surface  198 . The head portion  192  has a bottom surface  200 , a top surface  202 , and a generally circular outer edge  204 . The top end  196  of the shank portion  190  is connected to the bottom surface  200  of the head portion  192 , and the generally circular outer edge  204  of the head portion  192  has a diameter which is larger than a diameter of the generally cylindrical outer surface  198  of the shank portion  190 . The head portion  192  preferably has a small thickness for reasons which will become apparent herein. An aperture  206  extends through the sleeve  104  from the top surface  202  of the head portion  192  to the bottom end  194  of the shank portion  190 . The aperture  206  may have a different dimension within the head portion  192  than in the shank portion  190 . 
     The attachment assembly  106  of the door security system  100  is best illustrated in  FIGS. 18-29 . The attachment assembly  106  includes a strap plate  208 , a pair of washer plates  210 , a plurality of bolts  212 , and a plurality of nuts  214 . 
     The strap plate  208  of the attachment assembly  106  is best illustrated in  FIGS. 18-20 . The strap plate  208  has a front surface  216 , a rear surface  218 , a top edge  220 , a bottom edge  222 , and opposite side edges  224   a,    224   b  which connect the top edge  220  to the bottom edge  222 . The strap plate  208  has a middle portion  226 , opposite end portions  228   a,    228   b,  and connecting portions  230   a,    230   b.  Each of the middle portion  226 , the end portions  228   a,    228   b,  and the connecting portions  230   a,    230   b  are preferably rectangular in configuration. The end portion  228   a  extends from the side edge  224   a  to the connecting portion  230   a,  and the end portion  228   b  extends from the side edge  224   b  to the connecting portion  230   b.  The connecting portion  230   a  extends angularly inwardly and forwardly from the end portion  228   a  to the middle portion  226 , which the connecting portion  230   b  extends angularly inwardly and forwardly from the end portion  228   b  to the middle portion  226 . The middle portion  226  is thus parallel to, but offset from, the end portions  228   a,    228   b,  and the end portions  228   a,    228   b  are separated from one another, but are planar with one another. The connecting portions  230   a,    230   b  are preferably angled relative to each of the middle and end portions  226 ,  228   a,    228   b  at approximately forty (40) to forty-five (45) degrees. Each of the end portions  228   a,    228   b  preferably have a pair of apertures  232   a,    234   a;    232   b,    234   b  provided therethrough. Each aperture  232   a,    234   a,    232   b,    234   b  is preferably provided equidistant between the top edge  220  and the bottom edge  222 . The apertures  232   a,    232   b  are provided proximate to the side edges  224   a,    224   b,  respectively, while the apertures  234   a,    234   b  are provided distal to the side edges  224   a,    224   b  and proximate to the connection of the end portions  228   a,    228   b  and the connecting portions  230   a,    230   b.    
     The washer plate  210  of the attachment assembly  106  is best illustrated in  FIGS. 21-23 . Each washer plate  210  includes a front surface  236  and a rear surface  238 . The washer plate  210  has a top edge  240 , a bottom edge  242 , and a pair of side edges  244   a,    244   b  which connect the top edge  240  to the bottom edge  242 . The top and bottom edges  240 ,  242  preferably have identical lengths and the front and rear surfaces  236 ,  238  are preferably rectangular in configuration. The washer plate  210  has a pair of apertures  246   a,    246   b  provided therethrough. Each aperture  246   a,    246   b  is preferably provided equidistant between the top edge  240  and the bottom edge  242 . The aperture  246   a  is provided proximate to the side edge  244   a  while the apertures  246   b  is provided distal to the side edge  244   a  and proximate to the side edge  244   b.    
     The bolts  212  of the attachment assembly  106  are best illustrated in  FIGS. 24-26 . The attachment assembly  106  preferably includes four bolts  212 . The bolts  212  are preferably round head, square neck bolts. Each bolt  212  has a shank portion  248  and a head portion  250  connected at one end of the shank portion  248 . The head portion  250  is preferably domed in configuration and has a larger base diameter than a diameter of the shank portion  248 . The shank portion has a generally square, non-threaded portion  252  proximate to the head portion  250  and a generally cylindrical, threaded portion  254  extending from the non-threaded portion  252  to a free end of the shank portion  248 . 
     The nuts  214  of the attachment assembly  106  are best illustrated in  FIGS. 27-29 , The attachment assembly  106  preferably includes four nuts  214 . The nuts  214  are preferably zinc-plated, steel acorn nuts. Each nut  214  has a hexagonal base portion  256  and a domed portion  258  which extends therefrom. An opening  260  is provided at the hexagonal base portion  256  and extends through the hexagonal base portion  256  and into the domed portion  258 . The opening defines a wall  262  which is preferably threaded. 
     The release mechanism  108  is best illustrated in  FIGS. 30-32 . The release mechanism  108  is preferably formed of a rolled steel bar which has been bent to provide its desired configuration. More specifically, the release mechanism  108  has a first portion  264 , a second portion  266 , a third portion  268 , a fourth portion  270 , and a fifth portion  272 . Each of the second, third, fourth, and fifth portions  266 ,  268 ,  270 ,  272  are planar with one another. 
     The first portion  264  extends from a first free end  274  of the release mechanism  108  to the second portion  266 . The second portion  266  extends straight outwardly from the first portion  264  to the third portion  268 , such that the first and second portions  264 ,  266  are in alignment with one another, but with the first portion  264  being provided at an angle relative to the second portion  266 . The third portion  268  extends from the second portion  266  to the fourth portion  270 , with the third portion  268  preferably being perpendicular to the second portion  266 . The fourth portion  270  extends from the third portion  268  to the fifth portion  272 , with the fourth portion  270  preferably being perpendicular to the third portion  268 . The fourth portion  270  is preferably positioned opposite of, and in parallel position to, the second portion  266 . The fifth portion  272  extends from the fourth portion  270  to a second free end  276  of the release mechanism  108 , with the fifth portion  272  preferably being perpendicular to the fourth portion  270 . The fifth portion  272  is preferably positioned opposite of, and in parallel position to, the third portion  268 . The connections between the portions  264 ,  266 ,  268 ,  270 ,  272  are preferably smooth and curved. The third, fourth, and fifth portions  268 ,  270 ,  272  are generally provided in a J-shaped configuration. The first portion  264  is preferably longer than the third portion  268 , the third portion  268  is preferably longer than the second portion  266 , the second portion  266  is preferably longer than the fourth portion  270 , and the fourth portion  270  is preferably longer than the fifth portion  272 . 
     Each of the main plate  110 , the pair of pins  112 , and the support plate  114  of the security apparatus  102 , the strap plate  208  and the washer plate  210  of the attachment assembly  106 , and the release mechanism  108  are preferably made of steel. Alternatively, one or more of these parts may be made of aluminum, wood, or any other material known to one skilled in the art, provided that these alternative materials enable the door security system  100  to work in the manner as described hereinbelow. The sleeves  104  are preferably made of aluminum. Alternatively, the sleeves  104  may be made of steel, wood, plastic, or any other material known to one skilled in the art, provided that these alternative materials enable the door security system  100  to work in the manner as described hereinbelow. 
     Description of the installation and operation of the door security system  100  will now be described with reference to  FIGS. 33-54 . While the door security system  100  may be installed and operated in any type of setting having a door separating a first space from a second space, the door security system  100  will be described herein as being installed and operated in connection with a door  300 ,  400  which separates a classroom  500  (e.g., the first space) from a hallway  600  (e.g., the second space) in a school, where the classroom  500  and the hallway  600  share a common floor  700 . Door  300  is defined as a door which opens into the classroom  500 , whereas door  400  is defined as a door which opens into the hallway  600 . 
     Regardless of whether door  300  or door  400  is provided, initial installment of the door security system  100  is required and will be described with reference to  FIGS. 33-39 . Initial installment of the door security system  100  requires that a pair of holes  702  be formed in the floor  700  of the classroom  500 , proximate to the door  300 ,  400 , as illustrated in  FIG. 33 . The holes  702  are preferably provided on opposite sides of a center of the door  300 ,  400 , but may be provided at any desired position along a base of the door  300 ,  400 . 
     Once the holes  702  are formed, the sleeves  104  are preferably positioned in the holes  702  with the shank portions  190  being provided within the holes  702  and with the bottom surfaces  200  of the head portions  192  being positioned flat against the floor  700 , as illustrated in  FIG. 34 . The sleeves  104  may be retained within the holes  702  and held in place relative to the floor  700  in any suitable manner, such as by an adhesive or an epoxy. Thus, the holes  702  must have a depth which is at least as large as a length of the shank portions  190  of the sleeves  104 . As the top surface  202  and the circular outer edge  204  of the head portions  192  of the sleeves  104  are positioned above the floor  700 , the thickness of the head portions  192  are preferably minimized as much as possible. In this regard, the head portions  192  do not prevent or impede the opening of the door  300  into the classroom  500  and, if desired, the circular outer edge  204  may taper from the bottom surface  200  to the top surface  202  (so that the top surface  202  has a smaller diameter than the bottom surface  200 ), or, alternatively, the head portions  192  may be entirely removed from the sleeves  104  so that the top end  196  of the shank portion  190  is generally flush with, or recessed from, the floor  700 . As another option, the sleeves  104  may not be utilized at all, but this is not preferred. 
     In connection with door  400  only, initial installment of the attachment assembly  106  is also required, with reference to  FIGS. 35-39 . Also in connection with door  400  only, a gap  410  must be provided between the bottom of the door  400  and the floor  700  (a gap can be provided between the bottom of door  300  and the floor  700 , but it is not required for operation of the door security system  100 ). When door  300  is provided between the classroom  500  and the hallway  600 , the attachment assembly  106  of the door security system  100  is not installed, and the release mechanism  108  of the door security system  100  is not likely to be operated. 
     The attachment assembly  106  is installed by drilling first and second pairs of apertures  402   a,    404   a;    402   b,    404   b  through the door  400 , proximate to a lower end of the door  400 . Of course, it is to be understood that the apertures  402   a,    404   a;    402   b,    404   b  could be provided through the door in any desired manner. When viewed as in  FIG. 35 , it is apparent that the first pair of apertures  402   a,    404   a  are provided to the left of the leftmost sleeve  104 , while the second pair of apertures  402   b,    404   b  are provided to the right of the rightmost sleeve  104 . One pair of apertures  402   a,    404   a;    402   b,    404   b  is preferably provided proximate to one of the sleeves  104 , while the other pair of apertures  402   a,    404   a;    402   b,    404   b  is preferably provided distal to the other one of the sleeves  104 . As illustrated in  FIG. 35 , the second pair of apertures  402   b,    404   b  is preferably provided proximate to the rightmost sleeve  104 , while the first pair of apertures  402   a,    404   a  is preferably provided distal to the leftmost sleeve  104 . 
     With the apertures  402   a,    404   a;    402   b,    404   b  properly provided in the door  400 , each of the washer plates  210  are positioned to have their front surfaces  236  positioned against the side or surface of the door  400  which faces the hallway  600 , as illustrated in  FIGS. 36 and 37 . One washer plate  210  is positioned so that the aperture  246   a  is in alignment with the aperture  402   a,  and so that the aperture  246   b  is in alignment with the aperture  404   a.  The other washer plate  210  is positioned so that the aperture  246   a  is in alignment with the aperture  404   b,  and so that the aperture  246   b  is in alignment with the aperture  402   b.    
     Each of the four bolts  212  are then inserted, shank portion  248  first, through the aligned apertures  246   a,    402   a;    246   b,    404   a;    246   a,    404   b;    246   b,    402   b  until the base of the head portion  250  abuts against the rear surfaces  238  of the washer plates  210 , as illustrated in  FIGS. 36 and 37 . When the base of the head portions  250  of the bolts  212  abut against the rear surfaces  238  of the washer plate  210 , portions of the threaded portions  254  of the shank portions  248  of the bolts  212  will extend outwardly from the apertures  402   a,    404   a,    402   b,    404   b  and into the classroom  500 . 
     The strap plate  208  is then positioned to have the threaded portions  254  of the shank portions  248  of the bolts  212  be positioned through the apertures  232   a,    234   a,    234   b,    232   b  thereof, with aperture  232   a  being in alignment with aperture  402   a,  aperture  234   a  being in alignment with aperture  404   a,  aperture  234   b  being in alignment with aperture  404   b,  and aperture  232   b  being in alignment with aperture  402   b.  The rear surface  218  of the end portions  228   a,    228   b  thus are positioned against the side or surface of the door  400  which faces the classroom  500 , as illustrated in  FIGS. 38 and 39 . 
     Nuts  214  are then threaded onto the threaded portions  254  of the shank portions  248  of the bolts  212  until the base portions  256  of the nuts  214  are tightly positioned against the front surface  216  of the end portions  228   a,    228   b  of the strap plate  208 . The attachment assembly  106  of the door security system  100  is thus fixedly secured to the door  400 . When the attachment assembly  106  is fixedly secured to the door  400 , a slot  800  is provided between the door  400  and the middle and connecting portions  226 ,  230   a,    230   b  of the strap plate  208 , as illustrated in  FIGS. 38 and 39 . 
     With the holes  702  formed and the sleeves  104  positioned therein, and when the attachment assembly  106  is secured to the door  400  (if door  400  is provided), further installation and operation of the door security system  100  may be performed when required. The security apparatus  102  is retained in the classroom  500 , preferably in a location which is proximate to the door  300 ,  400 , which is easily accessible, and which is in open view. For instance, one or more magnets may be provided along a wall of the classroom  500  proximate to the door  300 ,  400 , for instance twelve (12) inches or less, and the security apparatus  102  may be secured to the magnets. 
     Attention is directed to  FIG. 40  in connection with a description of the further installation and operation of the door security system  100  in connection with door  300 . If an unauthorized person has entered the school and one or more individuals located in the classroom  500  are alerted to, or otherwise become aware of, the unauthorized person&#39;s presence in the school, the individual(s) may use the door security system  100  to try and prevent (or at least delay) the unauthorized person from entering the classroom  500  through the door  300 . More specifically, an individual would locate the security apparatus  102  and bring it next to the door  300 . The security apparatus  102  is easily handled due to the provision of the aperture  146  through the top portion  134  of the main plate  110 , thus allowing the individual to insert his/her fingers through the aperture  146  to allow for the easy gripping of the security apparatus  102 . Thus, the top portion  134  of the main plate  110  of the security apparatus  102  acts as a handle portion of the security apparatus. The security apparatus  102  preferably is also relatively light, preferably approximately five (5) pounds, such that any individual, even a young child, would be able to pick up and move the security apparatus  102 . 
     The pins  112  of the security apparatus  102  are then positioned over, and in general alignment with, the holes  702 /sleeves  104  in the floor  700 . The rear surfaces  120 ,  138  of the middle and top portions  116 ,  134  of the security apparatus  102  are positioned to face the door  300 , with the bottom portion  148  and the support plate  114  (and thus the opening to the channel  188  therebetween), being provided in a non-facing relation relative to the door  300 . 
     The security apparatus  102  is then moved downwardly so that the generally domed portions  164 , the generally conical portions  162 , and portions of the generally cylindrical portions  160  of the pins  112  are inserted into the apertures  206  of the sleeves  104  (or into the holes  702  if the sleeves  104  are not provided, or are missing). The configuration of the conical and domed portions  162 ,  164  aids in the proper insertion of the pins  112  into the apertures  206  of the sleeve  104 . The apertures  206  of the sleeve  104  are preferably slightly larger than the size of the pins  112 , such that any type of side-to-side movement of the pins  112  is substantially prevented. The security apparatus  102  is moved downwardly until the bottom surface  152  of the bottom portion  148  comes into contact with the head portions  192  of the sleeves  104  (if the head portions  192  are not provided on the sleeves  104 , or if the sleeves  104  are not provided at all, or are missing, the bottom surface  152  of the bottom portion  148  may contact the floor  700 ). Thus, the sleeves  104  act as a receiving assembly of the door security system  100 , the pins  112  of the security apparatus  102  act as a floor engaging portion of the security apparatus  102 , and the bottom portion  148  acts as a stop member of the security apparatus  102 . 
     With the pins  112  in place, the rear surface  120  of the middle portion  116  of the security apparatus  102  is preferably positioned flush against, or in close proximity to, the door  300 , as illustrated in  FIG. 40 . More specifically, a distance between the door  300  and the rear surface  120  of the middle portion  116  of the security apparatus  102  is approximately one-quarter of an inch (¼″), although the distance between the door  300  and the rear surface  120  of the middle portion  116  of the security apparatus  102  may be larger or smaller provided that the door security system  100  operates in the manner as described herein. The top portion  134  of the security apparatus  102  is provided at an angle relative to the middle portion  116  so as to provide the individual with adequate space to handle the security apparatus  102  proximate to the door  300 . 
     As illustrated in  FIG. 40 , the security apparatus  102  is thus essentially engaged with the floor  700 , as the pins  112  are anchored in the sleeves  104  positioned in the floor  700 , and prevents the door  300  from being opened into the classroom  500 . The middle portion  116  of the security apparatus  102  thus acts as a door blocking portion of the security apparatus  102 . Thus, the door security system  100  will prevent, or at least substantially delay, the unauthorized person from gaining access to the classroom  500  through the door  300 . When the unauthorized person is no longer a threat to the individual(s) within the classroom  500 , the individual(s) may remove the security apparatus  102  from the sleeves  104  by grabbing the top portion  134  of the security apparatus  102 , preferably utilizing the aperture  146  to aid in the gripping of the top portion  134 , and pulling the security apparatus  102  straight upwardly. When the pins  112  are no longer positioned within the sleeves  104 , the security apparatus  102  can be returned to its place of storage and the door  300  can be opened into the classroom  500 . 
     Attention is directed to  FIGS. 41-54  in connection with a description of the further installation and operation of the door security system  100  in connection with door  400 . If an unauthorized person has entered the school and one or more individuals located in the classroom  500  are alerted to, or otherwise become aware of, the unauthorized person&#39;s presence in the school, the individual(s) may use the door security system  100  to try and prevent (or at least delay) the unauthorized person from entering the classroom  500  through the door  400 . More specifically, an individual would locate the security apparatus  102  and bring it next to the door  400 . The security apparatus  102  is easily handled due to the provision of the aperture  146  through the top portion of the main plate  110 , thus allowing the individual to insert his/her fingers through the aperture  146  to allow for the easy gripping of the security apparatus  102 . Thus, the top portion  134  of the main plate  110  of the security apparatus  102  acts as a handle portion of the security apparatus. The security apparatus  102  preferably is also relatively light, preferably approximately five (5) pounds, such that any individual, even a young child, would he able to pick up and move the security apparatus  102 . 
     The pins  112  of the security apparatus  102  are then positioned over the slot  800  provided between the door  400  and the strap plate  208  of the attachment assembly  106 . The pins  112  are further position over, and in general alignment with, the holes  702 /sleeves  104  in the floor  700 . The rear surfaces  120 ,  138  of the middle and top portions  116 ,  134  of the security apparatus  102  are positioned to face the door  400 , with the bottom portion  148  and the support plate  114  (and thus the opening to the channel  188  therebetween), being provided in a non-facing relation relative to the door  400 . 
     The security apparatus  102  is then moved downwardly so that the generally domed portions  164 , the generally conical portions  162 , and portions of the generally cylindrical portions  160  of the pins  112  are first inserted through the slot  800 , and then inserted into the apertures  206  of the sleeves  104  (or into the holes  702  if the sleeves  104  are not provided, or are missing). The configuration of the conical and domed portions  162 ,  164  aids in the proper insertion of the pins  112  into the apertures  206  of the sleeve  104 . The apertures  206  of the sleeve  104  are preferably slightly larger than the size of the pins  112 , such that any type of side-to-side movement of the pins  112  is substantially prevented. The security apparatus  102  is moved downwardly until the bottom surface  152  of the bottom portion  148  comes into contact with the head portions  192  of the sleeves  104  (if the head portions  192  are not provided on the sleeves  104 , or if the sleeves  104  are not provided at all, or are missing, the bottom surface  152  of the bottom portion  148  may contact the floor  700 ). Thus, the sleeves  104  act as a receiving assembly of the door security system  100 , while the pins  112  of the security apparatus  102  act as a floor engaging portion of the security apparatus  102 . 
     With the pins  112  in place, the cylindrical portions  160  of the pins  112  are positioned to rest against, or be in close proximity to, the rear surface  218  of the middle portion  226  of the strap plate  208  of the attachment assembly  106 . The first side edge portion  128   b  of the side edge  126   b  of the middle portion  116  of the security apparatus  102  is positioned proximate to the connection of the connecting portion  130   b  and the end portion  128 h of the strap plate  208  of the attachment assembly  106 , while the first side edge portion  128   a  of the side edge  126   a  of the middle portion  116  of the security apparatus  102  is positioned distal to the connection of the connecting portion  130   a  and the end portion  128   a  of the strap plate  208  of the attachment assembly  106 . Furthermore, the rear surface  120  of the middle portion  116  of the security apparatus  102  is preferably positioned flush against, or in close proximity to, the door  400 , as illustrated in  FIGS. 41 and 42 . More specifically, a distance between the door  400  and the rear surface  120  of the middle portion  116  of the security apparatus  102  is approximately one-quarter of an inch (¼″), although the distance between the door  400  and the rear surface  120  of the middle portion  116  of the security apparatus  102  may be larger or smaller provided that the door security system  100  operates in the manner as described herein. The top portion  134  of the security apparatus  102  is provided at an angle relative to the middle portion  116  so as to provide the individual with adequate space to handle the security apparatus  102  proximate to the door  400 . The top portion  134  is also preferably positioned above the strap plate  208 . 
     As illustrated in  FIGS. 41 and 42 , the security apparatus  102  is thus essentially engaged with the floor  700 , as the pins  112  are anchored in the sleeves  104  positioned in the floor  700 , and captured between the strap plate  208  and the door  400 , and thus prevents the door  400  from being opened into the hallway  600 . The strap plate  208  of the attachment assembly  106  and the middle portion  116  of the security apparatus  102  thus act as door blocking portions of the security apparatus  102 . Thus, the door security system  100  will prevent, or at least substantially delay, the unauthorized person from gaining access to the classroom  500  through the door  400 . When the unauthorized person is no longer a threat to the individual(s) within the classroom  500 , the individual(s) may remove the security apparatus  102  from the sleeves  104  and from being captured by the attachment assembly  106  by grabbing the top portion  134  of the security apparatus  102 , preferably utilizing the aperture  146  to aid in the gripping of the top portion  134 , and pulling the security apparatus  102  straight upwardly. When the pins  112  are no longer positioned within the sleeves  104  or within the slot  800 , the security apparatus  102  can be returned to its place of storage and the door  400  can he opened into the hallway  600 . 
     However, if, for whatever reason, the individual(s) within the classroom  500  cannot or will not remove the security apparatus  102 , and if an individual in the hallway  600  needs to enter the classroom  500  (such as a school administrator or emergency personnel, e.g., a police officer or a fireman), the release mechanism  108  of the door security system  100  can he utilized by this individual to unanchor and disengage the security apparatus  102  from the floor  700  within the classroom  500 , as illustrated in  FIGS. 43-54 . Unlike the security apparatus  102 , the release mechanism  108  is preferably stored in secured location remote from the door  400  to the classroom  500 , such as in an administrator&#39;s office, in a police car, or in a fire truck. 
     As illustrated in  FIG. 43 , the individual located in the hallway  600  first positions the release mechanism  108  on the floor  700  of the hallway  600  proximate to the door  400  such that the second, third, fourth, and fifth portions  266 ,  268 ,  270 ,  272  of the release mechanism  108  are positioned flat against the floor  700 , and such that the first portion  264  is angled upwardly from the floor  700 . The fourth portion  270  of the release mechanism  108  is positioned most proximate to the door  400 , preferably in a parallel relationship with the door  400 , and in general alignment with the washer plate  210  positioned at the right side of the door  400 . As will become apparent herein, the first and second portions  264 ,  266  of the release mechanism  108  act as a handle portion of the release mechanism  108 , while the third, fourth and fifth portions  268 ,  270 ,  272  of the release mechanism  108  act as a security apparatus engaging portion of the release mechanism  108 . 
     As illustrated in  FIGS. 44 and 45 , the release mechanism  108  is then moved forward, under the door  400  and through the slot  800  until the first and second portions  264 ,  266  of the release mechanism  108  are positioned proximate to the door  400  (see  FIG. 44 ), and until the fourth and fifth portions  270 ,  272  of the release mechanism  108  are positioned further into the classroom  500  than is the security apparatus  102  (see  FIG. 45 ). 
     As illustrated in  FIGS. 46 and 47 , the release mechanism  108  is then moved to the left until the third portion  268  of the release mechanism  108  abuts against one or both of the leftmost pin  112  of the security apparatus  102  and the head portion  192  of the leftmost sleeve  104  (when viewed from the classroom  500 , as shown in  FIG. 47 ). 
     As illustrated in  FIGS. 48 and 49 , the release mechanism  108  is then moved back toward the individual in the hallway  600  until a portion of the fifth portion  272  of the release mechanism  108 , including at least the free end  276  thereof, is positioned within the channel  188  of the security apparatus  102 , between the bottom portion  148  of the main plate  110  and the support plate  114 . 
     As illustrated in  FIGS. 50 and 51 , the release mechanism  108  is then rotated to the right (when viewed from the hallway  600 , as shown in  FIG. 50 ) by the individual in the hallway  600  so that the second portion  266  of the release mechanism  108  comes to a position where it is substantially perpendicular to the floor  700  (see  FIG. 50 ). This rotational movement of the release mechanism  108  also causes the fourth and fifth portions  270 ,  272  of the release mechanism  108  to likewise rotate. As a portion of the fifth portion  272  is positioned in the channel  188  between the bottom portion  148  of the main plate  110  and the support plate  114 , the fifth portion  272  engages the support plate  114  to lift the security apparatus  102  upward, thereby lifting the pins  112  out of the sleeves  104 . As the fifth portion  272  lifts the security apparatus  102 , the fifth portion  272  slides to the left within the channel  188  (as viewed in  FIG. 51 ). 
     As illustrated in  FIGS. 52 and 53 , continued rotation of the release mechanism to the right (as viewed from the hallway  600 , as shown in  FIG. 52 ) causes the first portion  264  of the release mechanism  108  to be positioned in a generally parallel positioned relative to, but offset from, the floor  700 . Such continued rotation causes the fourth portion  270  of the release mechanism  108  to come to a position which is substantially perpendicular to the floor  700 , and causes the fifth portion  272  of the release mechanism  108  to further slide to the left in the channel  188  (as viewed from the classroom  500 , as shown in  FIG. 53 ), thereby unanchoring the pins  112  from the sleeves  104  and moving the security apparatus  102  within the slot  800  to the left, such that the pins  112  arc no longer aligned with the sleeves  104  (as viewed from the classroom  500 , as shown in  FIG. 53 ). The strap plate  208  is preferably positioned at a height above the door  400  so as not to interfere with the rotational movements of the release mechanism  108 . 
     As illustrated in  FIG. 54 , once the security apparatus  102  is unanchored from the floor  700  and the pins  112  are moved out of alignment with the sleeves  104 , the release mechanism  108  can be moved forwardly by the individual in the hallway  600  so as to disengage the fifth portion  272  of the release mechanism  108  from within the channel  188  of the security apparatus  102 . The domed portions  164  of the pins  112  of the security apparatus  102  will then rest on the floor  700 , but the security apparatus  102  will be maintained in a standing position as it will remain captured within the slot  800  between the door  400  and the strap plate  208 . The release mechanism  108  can then be pulled by the individual in the hallway  600  so that the release mechanism  108  moves between the pins  112  of the security apparatus  102  and through the slot  410  between the door  400  and the floor  700 . As the security apparatus  102  is no longer anchored in the floor  700 , the door  400  can then be opened into the hallway  600 . 
     It is to be understood that the release mechanism  108  of the door security system  100  could also be utilized to unanchor the security apparatus  102  from the floor  700  when the security apparatus  102  is preventing the opening of door  300  into the classroom  500 . The manner in which the release mechanism  108  would unanchor the security apparatus  102  in relation to door  300  would be identical to that in relation to door  400 . 
     Thus, it is to be understood that the security apparatus  102  of the door security system  100  can be anchored within the sleeves  104  positioned in the floor  700  (and in the slot  800  in the case of an outwardly opening door  400 ) in both a quick and easy manner, even by a small child, in the event where one or more unauthorized individuals has entered the facility in which the room  500  is provided, e.g., in the event of a lockdown or emergency in a school. The door security system  100  thus does not require the use of keys or alarms, or the execution of complicated procedures—the security apparatus  102  can just be dropped into place to lock the door  300 ,  400 . From within the room  500 , the security apparatus  102  can be quickly and easily unanchored from the floor  700  by simply pulling upward on the security apparatus  102 . Conversely, from outside of the room  500 , the security apparatus  102  can also be quickly and easily unanchored from the floor  700  through quick use of the release mechanism  108 . 
     It is to be recognized that the door security system  100  is suitable for use in a number of different environments, including schools, offices and residences. With regard to schools and offices, these environments are typically subject to jurisdictional fire codes. While fire codes vary from jurisdiction to jurisdiction, unlike many other types of door security systems, the door security system  100  of the present invention has been found to comply with a number of different jurisdictional fire codes as the door security system  100  can be disengaged and removed from outside the room  500  in which it is installed. 
     The door security system  100  also provides significant strength improvements as compared to other prior art door security systems. As stated, the pins  112  are preferably formed of solid steel and are each designed to provide 8,000 pounds per square inch (“PSI”) of tensile strength. Thus, each security apparatus  102 , which has two pins  112 , provides 16,000 PSI of tensile strength toward the prevention of the door  300 ,  400  being opened. 
     Furthermore, the door security system  100  when not in use (e.g., with only the sleeves  104  and attachment assembly  106  in place), poses no tripping or other hazards, 
     The door security system  100  may also lead to lower insurance premiums for environments where the door security system  100  is installed/utilized. 
     While not presently illustrated, if desired, the sleeves  104  could be outfitted with some type of cover so as to prevent dirt or other objects from falling into the apertures  206  of the sleeves  104 . The covers could be of a removable/reinstallable type, or the covers could be provided in a manner where, if the security apparatus  102  is to be used, the pins  112  of the security apparatus  102  could essentially puncture through the covers, with the covers “breaking away”, thereby allowing the pins  112  to move into their desired position within the apertures  206  of the sleeves  104 . 
     The use of the terms “a” and “an” and “the” and similar referents in the context of describing the invention (especially in the context of the following claims) are to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. Recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., “such as”) provided herein, is intended merely to better illuminate the disclosed embodiments of the invention and does not pose a limitation on the scope of the invention unless otherwise claimed. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the invention. It is further to be understood that the drawings are not necessarily drawn to scale. 
     Preferred embodiments of this invention are described herein, including e best mode known to the inventor for carrying out the invention. It should be understood that the illustrated embodiments are exemplary only, and should not be taken as limiting the scope of the invention.