Abstract:
A lock for installation on a pre-existing or new door is shown. The lock extends from the door through the hinge of the door and into the door frame and alternatively into the door frame and stud. This arrangement provides increased security and resistance against breaking in the door to gain unauthorized entry.

Description:
PRIORITY 
   This application claims the benefit of U.S. Provisional Application No. 60/377,807 filed on May 6, 2002. 

   FIELD 
   The present version of this invention relates generally to the field of improving security in doors. 
   BACKGROUND 
   This invention relates to improvements in security for doors, and more particularly to a device that helps prevent unwanted persons from entering a home or business. This device helps prevent unwanted persons from gaining access by improving the security of the standard door by using the door hinge and a dead bolt. 
   Burglary and forced entry unfortunately occur more often then we would care to think about. Many times criminals will kick in a door forcing the door knob from the frame of the door to gain access to the home or other building. It should be pointed out that when a door is forced open, many times the only thing keeping the door locked is the knob that sticks into the frame. It is relatively easy to break in a door in that only has a door knob locking it. 
   Some persons have used different devices to prevent unwanted access to homes and buildings. Some have used dead bolts which are typically mounted above or below the door knob. Dead bolts on the same side of the door as the door knob suffer from the same problem as the door knob itself. The framing that the door knob and the standard deadbolt engage is too thin to defer a seasoned attack by a persistent unwanted guest. 
   Some persons, then use multiple deadbolts or other means to discourage access. Multiple deadbolts require that the user thus have as many keys as deadbolts unless they are all keyed alike. Multiple deadbolts could mean multiple keys which are bulky, difficult to carry, and can be easily misplaced. If all the deadbolts are keyed the same, the intruder needs to only obtain one key to open the door and this defeats the purpose of multiple deadbolts. 
   Many other devices exist in the prior art to prevent unwanted access. Many of these are complicated, expensive, require time consuming retrofits, special skills to install, may be impracticable to the point that users don&#39;t use them and some just don&#39;t look very aesthetically appealing. 
   For the foregoing reasons, there is a need for a device that the average consumer could retro-fit to an existing door with commonly available tools or a manufacturer could easily include at the manufacturing level to enhance the security of the existing doors. 
   SUMMARY 
   In view of the foregoing disadvantages inherent in the field of door security there is a need for a new type of device that can be relatively easily installed by the average consumer with common tools, does not look unattractive, is not overly complicated and enhances the security of the door. 
   A first object of this embodiment of the invention is to provide a device that enhances the security of a door. 
   Another object of this embodiment of the invention is to provide a device that can be relatively easily installed on existing doors. 
   It is another object of this embodiment of the invention is to have a device that can be installed by the average consumer with common tools. 
   It is yet another object of this embodiment of the invention to provide a device that looks relatively attractive and corresponds with the look that consumers are used to seeing on doors. 
   It is a still further object of this embodiment of the invention to provide a device that discourages the unwanted entrance through a door. 
   Another object of this embodiment of the invention is to provide a device that can be installed on newly manufactured doors. 
   These together with other objects of this invention, along with various features of novelty which characterize this invention, are pointed out with particularity in the claims annexed hereto and forming a part of this disclosure. For a better understanding of this invention, its operating advantages and the specific objects attained by its uses, reference should be had to the accompanying drawings and descriptive matter in which there is illustrated a preferred embodiment of this version of the invention. 
   The following patents disclose various embodiments of dead bolt locks. These dead bolt locks and actuation structure were well known in the background art at the time of this application filing. These patents are hereby incorporated by reference into this application since the relevant structure of this background art is presumed to be part of the knowledge of one having ordinary skill in the art. U.S. Pat. No. 1,846,364 Schlage, U.S. Pat. No. 2,042,021 Schlage, U.S. Pat. No. 3,606,422 Hennessy, U.S. Pat. No. 3,699,788 Gerlach et al, U.S. Pat. No. 4,272,974 Hennessy, U.S. Pat. No. 4,593,542 Rotondi et al, U.S. Pat. No. 4,656,849 Rotondi et al, U.S. Pat. No. 5,765,412 Koskela et al, U.S. Pat. No. 6,523,375 Beatty. 

   
     BRIEF DESCRIPTION OF DRAWINGS 
       FIG. 1  shows an overview of one embodiment of the invention installed in a standard door with the standard door frame and door knob. 
       FIG. 2  shows a cutaway side view of one embodiment of the invention as installed with the door closed and locked. 
       FIG. 3  shows a detailed perspective view of one embodiment of the invention as installed with the door open and lock unlocked. 
       FIG. 4  shows a side view of one embodiment of the invention mounted on and in a standard door. 
       FIG. 5  shows a top view of one embodiment of the invention mounted in a typical door, frame and stud. 
       FIG. 6  shows a view of another embodiment of the frame plate and receiver. 
       FIG. 6A  shows a side view of the alternative embodiment of the frame plate and receiver of  FIG. 6 . 
       FIG. 7  shows a view of another embodiment of a one piece frame plate and receiver. 
       FIG. 7A  shows a side view of the alternative embodiment of the one piece frame plate and receiver of  FIG. 7 . 
       FIG. 8  shows a side view of another embodiment of the fist end of the receiver. 
       FIG. 8A  shows a top view of the first end of the receiver in  FIG. 8 . 
       FIG. 9  shows a side view of another embodiment of the first end of the receiver. 
       FIG. 9A  shows top view of the first end of the receiver in  FIG. 9 . 
       FIG. 10  shows another embodiment of the first end of the receiver. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
   Referring to the drawings in detail wherein like elements are indicated by like numerals, there is shown in  FIG. 1  an overview of the lock  11  installed in a door D having a knob K and a frame F. While this embodiment of the invention shows the lock  11  installed in the position of the middle hinge  18 , it should be understood that it could also be installed at the top hinge H 2  or bottom hinge H 1 , or all three hinges could have the separate locks  11  installed. Also shown in  FIG. 1  is the dead bolt  14  connecting to the rod  16  which is housed in the receiver  20 . In a typical installation, on the exterior of door D would be a dead bolt  14  and a key way  34 . The key way  34  is connected to the rod  16  and the handle  28 , the handle  28  is located on the interior of the door D. The rod  16  has a rod end  17 . 
     FIG. 2  shows a cutaway side view of the lock  11  as typically installed in the door D frame F and stud S. This embodiment shows the rod  16  housed partly within the receiver  20 , or the door locked. The receiver  20  extends through the frame F into the stud S, thus penetrating deeper than the conventional door knob K elements. The user would need to drill a hole through the frame F and stud S of a pre-determined diameter and depth such that the receiver  20  would fit into the hole. 
   Once the receiver  20  is seated in the hole, fasteners f 1  can be used to secure the receiver in the frame F and stud S. 
     FIG. 6  shows an alternative embodiments of the frame plate  22  and the receiver  20 . In this particular embodiment, frame plate  22  has a cutout  40  for receiving the shoulder  21  of the receiver  20 . The receiver could thus be fastened with fasteners f 1  which run through the frame plate  22  and into the frame F and stud S as shown in  FIG. 3 . 
     FIG. 7  shows another embodiment where the frame plate  22  and receiver  20  are combined into a one piece unit. 
     FIG. 8  and  FIG. 8A  show a side and top view respectively of the receiver  20  first end  19 . In this embodiment, the first end  19  terminates in a vertical slot. This would allow the user to drill a hole through the frame F and most of the required depth into stud S and pound the first end  19  into the stud S further retaining the receiver  20  within the stud S. 
   Likewise,  FIGS. 9 &amp; 9A  show an alternative embodiment of the receiver  20  first end  19 . In this embodiment, the first end  19  is a vertical slot. The user would drill a hole through the frame F and most of the required depth into the stud S and pound the first end  19  into the stud S further retaining the receiver  20  within the stud S. 
   In this embodiment, a chamfer  42  is cut at the first end  19  so that when the first end is pounded into the stud S, the chamfer  42  cuts into the stud S which fills the receiver  20  substantially as shown. 
   Likewise door plate  24  could also have a receiver sleeve (not shown) similar to receiver  20  to strengthen the lock  11 . The receiver sleeve would extend from the door plate  24  to near the cross member  15 ,  FIG. 3 . Any of the attachment methods shown in FIGS.  3 , 6 ,  6 A,  7  or  7 A could be used for the receiver sleeve. 
   It should be noted that any of the first end  19  embodiments shown could be used with any combination of the receiver  20 , either the two piece embodiments as shown in  FIGS. 6 &amp; 6A ,  FIG. 2  or the single piece embodiment of  FIGS. 7 &amp; 7A . 
   The frame plate  22  could be the standard hinge that had been installed on a pre-existing door. If this were the case, the user would need to drill a hole through both the frame plate  22  and the door plate  24  at a specific location. Preferably, a new hinge would be provided with pre-drilled frame and door holes  32 ,  30  through both the frame plate  22  and the door plate  24 . The user could then remove the existing hinge and replace it with the new hinge  18 . A replacement hinge  18  would aid in alignment and installation with the other components of the lock  11 . 
     FIG. 2  also shows the arrangement of the dead bolt  14  in the door D relative to the hinge  18 . The rod  16  is connected to the dead bolt  14  and rotation of the dead bolt  14  when a key is placed in the key way  34  on the exterior and handle  28  on the interior (best seen in  FIG. 4 ) causes a translational movement of the rod  16 . 
     FIG. 4  shows an oblong rod  16 . It should be recognized that the rod  16  could be of any shape such as circular, square, rectangular or of nearly any other shape without limitation. The rod  16  could be a different profile than that shown, such as a square, rectangle, star, oblong circle, triangle and any other. This different profile would necessitate that the door hole  30 , frame hole  32  and receiver  20  would have to correspond in shape or be designed such that the lock  11  would still function. The shape of the rod  16  shown is meant to be but one embodiment and not a limitation. 
   As the key is turned in the key way  34  of the dead bolt  14 , the rod  16  moves from within the door D or first position  36  through the door plate  24 , the frame plate  22  and into the receiver  20  to a second position  38 . In the second position  38 , the rod  16  is contained partly within the door D and through the door plate  24 , frame plate  22  and partly within the receiver  20 , best shown in  FIG. 2 . 
   Once the maximum distance is reached, the user removes the key from the dead bolt  14 , the rod is housed in the receiver  20  and the lock  11  severely discourages the door D from opening unless one has a key or someone is inside to open the lock  11 . 
   If some unwanted person was to try to open the door D with the rod  16  housed in the receiver  20 , they would have to break the rod  16  and receiver  20  through the frame and the stud S. Alternatively, with respect to  FIG. 5 , the handle  28  would have to be pulled through the door D to force open the door D. In typical exterior installations of doors D, trying to force the door D with the lock  11  installed would also require that the rod  16  be forced through the siding and/or brick to gain entry, best shown in  FIG. 5 . 
   If a person is on the inside of the door, the handle  28  can be turned and the rod  16  is removed from the receiver  20  (or second position  38 ), then the frame plate  22 , and the door plate  24  to reside within the door D (First position  36 ). The door D can then be opened and closed as a normal door is; provided no other security devices are being utilized. Other handles or even a keyed handle  28  could be used on the interior of the door also. 
   A person could also gain entry of a locked door D with a lock  11  installed by inserting the key into the dead bolt  14  and turning the dead bolt to remove the rod  16  from the receiver  20  or second position  38 , frame plate  22 , and door plate  24  to be housed within the door D, first position  36 . The door would then operate as a normal door provided the user has installed no other security devices. 
   As an alternative, the dead bolt  14  could have a handle (not shown) and combination lock (not shown) installed replacing the key way  34  of the dead bolt  14 , or a magnetic card and slot (neither shown) and many other devices for restricting access to specific persons that are known in the art. 
   It will now be apparent to those skilled in the art that other embodiments, improvements, details and uses can be made consistent with the letter and spirit of the foregoing disclosure and within the scope of this patent, which is limited only by the following claims, construed in accordance with the patent law, including the doctrine of equivalents.