Abstract:
The current disclosure describes and teaches a key organizing system which may include one or more key holder assemblies attached to a key organizer. Each key holder assembly forms a tree structure through the fastening mechanisms and the attachment assemblies of key holders. The tree structure is dynamically configured to reflect the relationship of the keys to a property. Keys are attached to the tree structure which facilitates the organization of the keys. The key organizer may include one or more swing sheets. Each swing sheet may include one or more swing hangers. The current invention helps owners or managers of one or multiple residential or commercial properties to better organize keys to their properties by mapping the relationship of the keys to a tree structure and storing the keys accordingly.

Description:
CLAIM OF PRIORITY 
       [0001]    This application claims priority to U.S. Provisional Application 61/750,338 filed on Jan. 8, 2013 and to U.S. Provisional Application 61/792,132 filed on Mar. 15, 2013, the contents of both are herein incorporated by reference in their entirety. 
     
    
     FIELD OF THE INVENTION 
       [0002]    The invention relates to a mechanical device that helps users to manage and organize keys for one or multiple residential or commercial properties. 
       BACKGROUND OF THE INVENTION 
       [0003]    In many cases, owners and managers of one or multiple residential or commercial properties need to keep track of and organize the keys for such properties. However, sometimes the properties—and thus the corresponding keys—have complex tiered relationships, making the organizing efforts more difficult. For example, a manager of an apartment building may need to organize a large number of keys for not only the apartments, which may differ in sizes and format, but also for the individual rooms within the apartments and for public places such as laundry rooms. It is very challenging for the manager to keep track of all the keys, and access specific keys promptly and accurately. 
         [0004]    Conventional key accessories, such as key boxes and key cabinets, do not take into account the relationship structure of the keys. Instead the keys are organized in rows, which typically bear no resemblance to the relationships of the properties which correspond to the keys. Therefore, using the conventional key accessories, it is difficult for users to remember which key is for what property, room, or car. It is also difficult to share keys among one or multiple people due to the lack of clear logic in the organization of the keys. In addition, most of these key boxes or cabinets on the market require a continuous upright position so the keys can hang properly. The keys can easily fall out if the key boxes or cabinets are turned upside down or sideways. Therefore, these key boxes or cabinets are generally not portable. Additionally, they are typically limited by a prefixed number of keys. The number of hooks to hang the keys is pre-set during manufacturing. A user cannot add the number of hooks or re-arrange the configuration of the hooks. 
         [0005]    Some inventions have been directed to mechanical devices that help to organize keys. For example: U.S. Pat. No. 6,698,854 (&#39;854 patent) discloses a key organizer having a housing with a first section and a second section which are pivotally connected. First and second drums are rotatably mounted on axles within a cavity of the housing. A first belt is engaged with the first and second drums and has a plurality of suspension points for hanging articles thereon. A drive mechanism is connected to one of the drums for rotating one of the drums to cause rotation of the belt. A switching device is connected to the drive mechanism for selectively continuously activating the drive mechanism. Third and fourth drums are mounted onto the axles in spaced relation to the first and second drums. A second belt engages these drums. The drive mechanism has a gear train with a drive gear and additional gears which matingly engage the drive gear. A locking mechanism locks the first and second sections together. A light can be mounted onto one of the first and second sections for illuminating the housing cavity. 
         [0006]    However, it should be noted that neither the &#39;854 patent herein listed, nor any other patents or publications, addresses all the issues raised above. In essence, there is a strong unmet need for a key organizing system that organizes keys based on the tiered relationship of the properties that correspond to the keys. In addition, it is desirable for a key organizer to be easy to access and easy to add new key attaching mechanisms. The current invention fulfills the needs. 
         [0007]    In summary, various implements are known in the art, but fail to address all of the problems solved by the invention described herein. Several embodiments of this invention are illustrated in the accompanying drawings and will be described in more detail herein below. 
       SUMMARY OF THE INVENTION 
       [0008]    The present invention is a key organizing system that helps owners or managers of one or multiple residential or commercial properties to better organize keys to their properties. Similarly, this invention helps garage owners, hotel managers, and campus managers who are in possession of many keys. More specifically, the present invention supports the inherent relationship structure of the keys by providing a labeling system and by enabling easy attachment and detachment of key chains. 
         [0009]    One central component of the current invention is a key holder assembly, which may include one or more key holders. The key holder assembly can be configured to represent the tiered structure of the keys to the properties by connecting a key holder to another key holder, and connecting keys to the key holders. Each key holder may comprise a label area or a labeling block having at least one label; a fastening mechanism attached to a top of the label area or labeling block; and the attachment assembly having at least one attachment point. The fastening mechanism is preferably a snap hook or a carabiner that is releasable, but may also be other mechanisms. The design of the attachment assembly of the key holder may vary according to specific needs. By connecting one or more key holders (second tier) to another key holder (first tier), it creates two tiers. Similarly, one can connect one or more key holders (third tier) to a second tier key holder, thus creating three tiers in the tree structure. Keys hang off the tree structure of the key holder assembly. The key holder assembly can take on the shape of a tree of any breadth and depth which is described through the labeling system. 
         [0010]    The current invention may also include a key organizer comprising a swing hanger having a hanger rack swingably connected to a first hinge, the hanger rack having the hanger attachment assembly disposed on the hanger rack. The hanger attachment assembly of the hanger rack and the attachment assembly of the key holder may be different. The key organizer may also include a swing sheet against which the swing hanger may be aligned. There may also be multiple swing sheets that are aligned in parallel for easy storage. In addition, the key organizer may further include a container box, which may be used to enclose the swing hangers and swing sheets. The container box may be portable and/or wall mountable. 
         [0011]    The current invention teaches a key organizing system that consists of a key organizer, and one or more key holder assemblies. The releasable fastening mechanism of the first tier key holder of a key holder assembly may attach to the hanger attachment assembly of the swing hanger. A hanger attachment assembly has one or more hanger attachment points. More particularly, it is preferred that the fastening mechanism of the key holder attaches to the hanger attachment point and conforms to the shape of the hanger attachment point of the swing hanger in a manner which minimizes movement of the fastening mechanism in relation to the hanger rack. 
         [0012]    In general, the present invention succeeds in conferring the following, and others not mentioned, desirable and useful benefits and objectives. 
         [0013]    The key holder assembly can be configured to closely represent the tiered structure of the keys to the properties by connecting a key holder to another key holder, and connecting keys to the key holders, thus forming the key holder assembly with the tier structure. The key holder assembly can take on the shape of a tree of any breadth and depth which is described through the labeling system. 
         [0014]    The key organizer can be highly portable. A user can carry all the keys in the container box with him. Even if the key organizer incur much movement such as being turned upside down or dropped on the ground, the key holders can stay in place through several attachment methods. 
         [0015]    The key organizer can be wall mountable and easily releasable. It can be securely mounted to the wall when the container box is locked. When the container box is open, it can be easily removed, and to be put back on the wall at a later time. 
         [0016]    A user can re-configure the key holder assembly easily by attaching and detaching the key holders or the keys. Or he can remove a specific key holder from a key holder assembly and later return the key holder to the key holder assembly. Similarly, he can remove a specific key holder assembly from the swing hanger and later return the key holder assembly to the swing hanger. The fastening mechanism on the first-tier key holder enables easy attachment or detachment to the swing hanger, one&#39;s belt or a bag. The fastening mechanism on the key holders below the first tier enables easy attachment or detachment to the key holder on a tier above. The adhesive labels can be placed onto the label space of the key holders, indicating the newly formed key structure. 
         [0017]    When a key holder is attached to a swing hanger, its fastening mechanism, such as a snap hook or a carabiner, allows little mobility due to the tight fit with the hanger attachment assembly to which the fastening mechanism is attached, regardless of the different weight of the keys on the key holder. 
         [0018]    Each swing sheet can swing out individually and each swing hanger can swing out individually for easy viewing and handling of key holders and keys. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0019]      FIG. 1  shows a key holder assembly wherein the first tier key holder is connected to a number of second tier key holders, demonstrating the tiered structure of the key holders. 
           [0020]      FIG. 2  shows a front view of a key organizer including a container box, swing sheets, swing hangers, and hinge pads. 
           [0021]      FIG. 3  shows a front view of a key organizing system including a container box, swing sheets, swing hangers, hinge pads, a lock pad, and key holder assemblies. 
           [0022]      FIG. 4  shows a front view of the lock pad. 
           [0023]      FIG. 5  shows a front view of a key organizer including a container box, a swing sheet, swing hangers, hinge pads, a lock pad, and a wall mounts for the container box. 
           [0024]      FIG. 6  shows the wall mounting screw and screw cap. 
           [0025]      FIG. 7  shows a side view of how the wall mount works. 
           [0026]      FIG. 8  shows a front view of a swing sheet, three hinge pads, and three swing hangers. 
           [0027]      FIG. 9  shows a top perspective view of a swing hanger connected to a hinge pad. 
           [0028]      FIG. 10  shows the hanger rack of a swing hanger having a hanger attachment assembly consisting of half cylinders and holes. 
           [0029]      FIG. 11  shows a top perspective view of a swing hanger, a hinge pad, and a key holder. 
           [0030]      FIG. 12  shows top perspective view of a swing hanger connected to a hinge pad, the hanger rack of the swing hanger a hanger attachment assembly consisting of half cylinders and holes 
           [0031]      FIG. 13  shows a top perspective view of the hanger rack of a swing hanger connected with a key holder, the hanger rack having an attachment assembly. 
           [0032]      FIG. 14  shows the hanger rack of a swing hanger having an attachment assembly. 
           [0033]      FIG. 15  shows top perspective view of a swing hanger connected to a hinge pad, the hanger rack of the swing hanger having a half key ring, a key hook and an upside down snap hook or carabiner as attachment points. 
           [0034]      FIG. 16  shows a key holder with a snap hook as the fastening mechanism, and a carabiner, a half key ring, a key hook, and a snap hook as attachment points, and a label area with labels. 
           [0035]      FIG. 17  shows a key holder with a carabiner as the fastening mechanism, and a carabiner, a half key ring, a key hook, and a snap hook as attachment points, and a label area with labels. 
           [0036]      FIG. 18  shows a key holder with a loop as the fastening mechanism, and a carabiner, a half key ring, a key hook, and a snap hook as attachment points as part of the attachment assembly, and a label area with a label. 
           [0037]      FIG. 19  shows a key holder with a snap hook as the fastening mechanism, and multiple half key rings as attachment points as part of the attachment assembly, and a label area with labels. 
           [0038]      FIG. 20  shows a key holder assembly wherein the first tier key holder is connected to a number of second tier key holders, demonstrating the tiered structure of the key holders. 
           [0039]      FIG. 21  shows another key holder assembly wherein the first tier key holder is connected to a number of second tier key holders, demonstrating the tiered structure of the key holders. The carabiners and a snap hook are used as the attachment points. Each label area contains one label. 
           [0040]      FIG. 22  shows a front view of a key holder having a round label area. 
           [0041]      FIG. 23  shows a front view of a key holder having a hexagonal label area. 
           [0042]      FIG. 24  shows a perspective view of a key holder having a labeling block with a dodecahedron shape wherein the half key rings are attach to the middle of the pentagonal facets. 
           [0043]      FIG. 25  shows the schematic tiered structure of the property keys in an apartment building. 
           [0044]      FIG. 26  shows the schematic tiered structure of the property keys in multiple multi-family properties, illustrating the tiered relationship of the keys. 
           [0045]      FIG. 27  shows the schematic tiered structure of the property keys in a commercial building, building, illustrating the tiered relationship of the keys. 
       
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0046]    The preferred embodiments of the present invention will now be described with reference to the drawings. Identical elements in the various figures are identified, as far as possible, with the same reference numerals. Such embodiments are provided by way of explanation of the present invention, which is not intended to be limited thereto. In fact, those of ordinary skill in the art may appreciate upon reading the present specification and viewing the present drawings that various modifications and variations can be made thereto without deviating from the innovative concepts of the invention. 
         [0047]    For clarity purposes, some identical elements in the same figure are not all marked. Marking of one of the identical elements serves as an indication for the reference to the other elements. 
         [0048]      FIG. 1  shows a two-tiered key holder assembly  99  wherein the first tier comprises a first tier key holder  100  and the second tier comprises of a number of second tier key holders  200 . The second tier key holders  200  attach to the first tier key holder  100  via fastening mechanisms. The structure of the key holder assembly  99  resembles a tree. 
         [0049]      FIG. 2  shows a front view of a key organizer including a container box  70 , swing sheets  50 , swing hangers  10 , a lock pad  80 , and hinge pads  75 . The container box shown in  FIG. 2  contains two swing sheets  50 . For each sheet  50 , there are three swing hangers  10  that may be fastened onto the swing sheet  50 . In general, a container box  70  may enclose multiple swing sheets  50  and each swing sheet  50  may attach to multiple swing hangers  10 . There is at least a handle  85  attached to the top of the container box  70 . The number of swing sheets  50  in a container box  70  and the number of swing hangers  10  attached to a swing sheet  50  may vary. 
         [0050]    The container box  70  is preferably both portable and wall mountable. The handle  85  attached to the top of the container box  70  allows the container box  70  to be carried around. The container box  70  may contain wall mount mechanisms so that the container box  70  can be mounted onto the wall. Due to the design of the wall mount elements, which is shown in  FIGS. 5-7 , the container box can be easily removed from the wall and put back onto the wall. 
         [0051]      FIG. 3  shows a front view of a key organizing system which consists of a key organizer, and one or more key holder assemblies. As indicated in this figure, the key organizing system contains a container box  70 , swing sheets  50 , swing hangers  10 , hinge pads  75 , a lock pad  80 , and key holder assemblies  99 . As shown in  FIG. 2 , the container box  70  is capable of enclosing all the swing sheets  50 , the swing hangers  10 , the hinge pad  75 , and the key holder assemblies  99 . There is at least a handle  85  attached to the top of the container box  70 . The first tier key holder  100  directly attaches to the swing hangers  10  via a releasable fastening mechanism  180  and a number of second tier key holders  200  attached to the first tier key holder  100  via fastening mechanisms  180 . If a user wants to take a key holder assembly  99  out of the container box  70 , he can easily release the fastening mechanism  180 . Conveniently, the user can attach the key holder assembly  99  to his belt or bag via the fastening mechanism  180 . The detailed structures of the various components are shown in later figures. 
         [0052]    As shown in  FIG. 3 , the container box  70  may be locked by a lock pad  80 , which prevents access to the interior of the container box  70  when locked. There could be different kinds of locks on the container box  70 . For example, it can be a regular key lock, or it can be a combination lock. 
         [0053]      FIG. 4  shows a front view of the lock pad  80 , serving as an example for the lock for the container box  70 . The lock pad  80  has a fastening button  81 , a combination lock  82 , and a key hole  83 . The fastening button  81  can be pushed to the left to close the front and back covers of the container Box. It can also be pushed to the right to open the front and back covers of the container box  70 . A combination lock  82  can use a three or more digit codes to lock the container box  70  securely. The key hole  83  can also be used to lock and unlock the container box  70  with a key. 
         [0054]      FIG. 5  shows a front view of a key organizer including a container box  70 , a swing sheet  50 , swing hangers  10 , handle  85 , hinge pads  75 , a lock pad  80 , and wall mounts for the container box  70 . There are a plurality of rectangular holes  92  on the back of the container box  70 . The visible wall mount element is the screw caps  95 . Please note that it doesn&#39;t have to be a rectangular hole  92 , it can be a narrow oval shape as long as the width and height of the hole are of different lengths so that the screw cap at some angle can&#39;t pass through. 
         [0055]      FIG. 6  shows the wall mounting screw  93  and screw cap  95 . The top panel of this figure shows the top and side views of the screw  93 . The middle panel of this figure shows the side and top views of the screw cap  95 . The lower panel shows a side view of the screw  93  and the screw cap  95  when the two parts are attached. 
         [0056]      FIG. 7  shows a side view of how the wall mount works. The left panel of this figure shows side view of the rectangular hole  92  on the back of the container box  70 . The middle panel shows the screw  93  threaded through the rectangular hole  92  and the screw cap  95  being turned so that the screw cap  95  cannot pass through the rectangular hole  92 . The right panel shows the screw  93  threaded through the rectangular hole  92  and the screw cap  95  being turned so that the screw cap  95  can pass through the rectangular hole  92 . 
         [0057]    As shown in  FIG. 6 , the screw cap  92  has a round hole which has internal threads. The internal threads matches the external threads of the screw  93 , which is preferably a Phillips screw. Thus the screw cap  92  can be screwed onto the Phillips screw  93 , as shown in the lower panel of  FIG. 6 . 
         [0058]      FIG. 7  shows how the container box  70  can be securely mounted onto the wall and how it can be easily removed. Referring to  FIGS. 5-7 , the following are the steps to mount the container box  70  onto the wall. 
         [0059]    (1) First drill two Phillips screws  93  onto the wall and make sure that the spacing matches the distance between the top two rectangle holes on the back wall of the container box  70 . 
         [0060]    (2) Hang the container box  70  on the top two Phillips screws  93 . 
         [0061]    (3) Screw on the half-moon shaped screw caps  95  onto the top two Phillips screws  93 . 
         [0062]    (4) Drill two Phillips screws  93  onto the wall through the bottom two rectangle holes  92 . 
         [0063]    (5) Screw on the screw caps  95  onto the bottom two Phillips screws  93 . 
         [0064]    (6) To securely mount the container box  70 , the user will turn the screw caps  92  so that the screw cap  95  and the rectangle hole  92  are orthogonal to each other. Since the length of the screw cap  95  is more than the width of the rectangle hole  92 , the container box  70  cannot be removed easily by pulling on the container box  70 . 
         [0065]    (7) To remove the container box  70 , simple turn the screw cap  95  ninety degrees so that the length of the screw cap  95  is aligned with the length of the rectangle hole  92 . Since the length of the screw cap  95  is less than the length of the rectangle hole  92 , the container box  70  can be easily removed. 
         [0066]    Once the container box  70  is locked either with a key or through the combination lock, the container box  70  cannot be removed easily by anyone due to the locking mechanism of the screw caps  95 . But when the container box  70  is unlocked, it is very easy to remove the container box  70  by turning the screw caps  95  by ninety degrees. 
         [0067]      FIG. 8  shows a front view of a swing sheet  50 , three hinge pads  75 , and three swing hangers  10 , wherein the swing hangers  10  are attached to first hinges  77 , and the swing sheets  50  attach to second hinges  79 . A first hinge  77  and a second hinge  79  may be disposed on a same hinge pad  75 . The swing hanger  10  includes a connecting frame  18  and a hanger rack  15 , wherein the hanger rack  15  is preferably positioned horizontally and may pivot horizontally against the swing sheet  50 . 
         [0068]    As shown in  FIG. 8 , a swing sheet  50  has a sheet label  63  on the top. The sheet labels from multiple swing sheets  50  may be staggered so that they can be seen by the user. In addition, there may also be a pulling hook  66  directly attached to the swing sheet  50 . By pulling on the pulling hook  66 , the swing sheet  50  swings and all of the swing hangers  10  being fastened to the swing sheet  50  will be forced to swing out with the swing sheet  50 . The swing sheet  50  may also include a fastening hook  60 . The hanger rack  50  may be releasably fastened to the swing sheet  50  via the fastening hooks  60 . Each swing hanger  10  can swing out individually as shown in  FIG. 8  since each swing hanger  10  has its own cylinder rod that rotates inside the hinge. 
         [0069]      FIG. 9  shows a top perspective view of a swing hanger  10  swingably connected to a first hinge  77  disposed on a hinge pad  75 . The swing hanger  10  includes a connecting frame  18  and a hanger rack  15 . Along the length of the hanger rack  15 , there are two attachment points, each attachment point comprises a half cylinder  25  and a hole  30 . It should be noted that each swing hanger  10  can have multiple attachment points and the number of attachment points disposed on the hanger rack  15  may vary. The half cylinder  25  has the shape of half a cylinder empty on the inside. The hole  30  is a cylinder-shaped cut out on the hanger rack  15  and goes through the hanger rack. The one or more attachment points along the lengths of the hanger rack  15  form the hanger rack attachment assembly. The attachment assembly needs to comprise at least one attachment. 
         [0070]      FIG. 10  shows the hanger rack  15  of a swing hanger  10  having a half cylinder  25  and a hole  30  as an attachment assembly. The top panel is a perspective view and the lower panel is a top view. The half cylinder  25  may protrude below the hanger rack  15 , and the hole  30  goes vertically through the hanger rack  15 . 
         [0071]      FIG. 11  shows a top perspective view of a swing hanger  10 , a hinge pad  75 , and a key holder  100  hanging from the hanger rack  15  of the swing hanger  10 . The key holder  100  comprises a snap hook  180  which can be considered a fastening mechanism, a label area  120 , and a key holder attachment assembly  140  positioned below the label area  120  and connected to the label area  120 . The snap hook  180  releasably fastens the key holder  100  to the attachment assembly—the half cylinder  25  and the hole  30 —of the swing hanger  10 . As shown in  FIG. 9-11 , the fastening mechanism—the snap hook  180 —of the key holder  100  attaches to the attachment —the half cylinder  25  and the hole  30 —of the hanger rack  15  and conforms to the shape of the attachment point of the hanger rack  15  in a manner which minimizes movement of the fastening mechanism of the key holder  100  in relation to the hanger rack  15 . In particular, as shown in  FIG. 11 , the tip of the snap hook  180  goes through the hole  30  and the snap hook  180  fits flush into the half cylinder  25  of the swing hanger  10 . This prevents the snap hook  180  from rotating freely or shifting on the swing hanger  10  even if the container box  70  is turned upside down. 
         [0072]    In the current embodiment, the portion of the snap hook  180  that is in contact with the half cylinder  25  preferably matches the size of the half cylinder  25 . As a result, there is little movement allowed for the snap hook  180 . The half cylinders  25  protrude downwards below the hanger rack  15  to further limit the horizontal movement of the snap hook  180 . The snug attachment of the snap hook  180  onto the swing hanger  10  is important because the keys on the key holder  100  might weigh differently, which would otherwise have resulted in a tilted key holder  100 . This tilting will create a messy look for the key structure that is created by stacking multiple key holders  100  in a tiered manner. The snug attachment of the snap hook  180  onto the swing hanger  10  prevents the key holder  100  from tilting vertically despite the varying weight of the keys. It should also be noted that it is not a strict requirement that the half cylinder  25  protrudes below the hanger rack  15 . As long as the general goal of minimum movement for the fastening mechanism can be achieved, the half cylinder  25  may be even with the hanger rack  15 . Please also note that even though the snap hook  180  is locked in place, the key holder  100  is free to rotate horizontally, but it cannot tilt vertically. The free rotation allows the key holder  100   s  to be packed together like sheets of paper. 
         [0073]      FIGS. 10 and 11  show another possible embodiment of the hanger rack attachment assembly. The attachment assembly that can be used on the swing hangers  10  can have different designs. Such alternative designs are shown in  FIGS. 12-14 . 
         [0074]      FIG. 12  shows a top perspective view of a swing hanger  10  swingably connected to a first hinge  77  disposed on a hinge pad  75 . The swing hanger  10  includes a connecting frame  18  and a hanger rack  15 . Along the length of the hanger rack  15 , there are two attachment points, each attachment point comprises a half cylinder  25  and a notch  35 . Here, the attachment assembly of the hanger rack  15  comprises two attachment points. The attachment assembly needs to comprise at least one attachment. 
         [0075]      FIG. 13  shows a top perspective view of a swing hanger  10 , a hinge pad  75 , and a key holder  100  hanging from the hanger rack  15  of the swing hanger  10 . The key holder  100  comprises a snap hook  180 , which can be considered a fastening mechanism, a label area  120 , and a key holder attachment assembly  140  positioned below the label area  120  and connected to the label area  120 . The snap hook  180  releasably fastens the key holder  100  to the attachment assembly—a half cylinder  25  and a notch  35 —of the swing hanger  10 . The combination of the half cylinder  25  and the notch  35  performs similar functions as the combination of the half cylinder  25  and the hole  30  shown in  FIG. 11 . The fastening mechanism—the snap hook  180 —of the key holder  100  attaches to the attachment assembly—the half cylinder  25  and the notch  35 —of the hanger rack  15  and conforms to the shape of the attachment point n a manner which minimizes movement of the fastening mechanism in relation to the hanger rack  15 . 
         [0076]      FIG. 14  shows the hanger rack  15  of a swing hanger  10  having two attachment points, each having a half cylinder  25  and a notch  35  attachment assembly. The top panel is a perspective view, and the lower panel is a top view. 
         [0077]      FIG. 15  shows top perspective view of a swing hanger  10  connected to a hinge pad  75 , the hanger rack  15  of the swing hanger  10  having a carabiner  40 , a half key ring  45 , a key hook  48 , and an upside down snap hook  49  as attachment points. A half key ring  40  is half a regular key ring. As shown in this figure, the half key rings  45 , the key hook  48 , and the snap hook  49  or carabiner  40  attach to the bottom of the hanger rack  15  and are capable of attaching key directly to the hanger rack  15  or attaching key holders or other objects. As indicated by  FIGS. 9-15 , the attachment assembly disposed on the hanger rack  15  may take many forms. The embodiments shown in  FIGS. 9-15  serve only as examples. 
         [0078]      FIG. 16  shows a front view of a key holder  100 , wherein the key holder  100  comprises: a label area  120  having at least one label; a snap hook  180 , which can be considered a fastening mechanism attached to a top of the label area; and the key holder attachment assembly  140  attached to the bottom of the label area  120 . The attachment assembly  140  is capable of attaching keys or other key holders to itself. Similar to the hanger rack attachment assembly in  FIG. 15 , the attachment points here include a snap hook, a half key ring, a key hook and a carabiner. The number of attachment points in the attachment assembly for a key holder  100  may vary according to the size of the key holder  100  and the needs of the user. 
         [0079]    The label area  120  as shown in  FIG. 16  can be a solid plate having at least one label. On the labels  150  and  160 , a user can put adhesive labels which can be peeled off and replaced with a new label. On the adhesive labels, a description of the key or key holder can be written. There could be multiple labels  150  and  160 . The label  150  preferably describes the entire key holder  100 . The second labels  160  may be designated to specific keys or properties. In general, the labels describe the tiered relationship of the properties and the key. The design of the labels shown in this figure serves as an example and may vary according to the number and relationships of the properties. 
         [0080]    The key holder  100  can be used to hang other key holders, or to hang keys directly. 
         [0081]      FIG. 17  shows a front view of a key holder  100 , wherein the key holder  100  comprises: a label area  120  having at least one label; a carabiner  179 , which can be considered a fastening mechanism attached to a top of the label area; and the key holder attachment assembly  140  attached to the bottom of the label area  120 . This figure shows that the fastening mechanism doesn&#39;t have to be limited to a snap hook. Other forms of fastening mechanism are also supported. 
         [0082]      FIG. 18  shows a front view of a key holder  100 , wherein the key holder  100  comprises: a label area  120  having at least one label; a loop  178 , which can be considered a fastening mechanism attached to a top of the label area; and the key holder attachment assembly  140  attached to the bottom of the label area  120 . This figure shows that the fastening mechanism doesn&#39;t have to be limited to a snap hook or a carabiner. Other forms of fastening mechanism are also supported. However, this key holder will not work with swing hanger in  FIG. 9  or  FIG. 12 . It works with the swing hanger in  FIG. 15 . 
         [0083]      FIGS. 19  shows a front view of a key holder  100 , wherein the key holder  100  comprises: a label area  120  having at least one label; a snap hook  180 , which can be considered a fastening mechanism attached to a top of the label area; and the key holder attachment assembly  140  attached to the bottom of the label area  120 . The key holder attachment assembly comprises half key rings. This figure shows that the key holder attachment assembly doesn&#39;t have to be limited to a snap hook or a carabiner. Other forms of fastening mechanism are also supported such as a half key ring. 
         [0084]      FIG. 20  shows a two-tiered key holder assembly  99  wherein the first tier comprises a first tier key holder  100  and the second tier comprises of a number of second tier key holders  200 . The first tier key holder  100  uses a snap hook  180  as a fastening mechanism and carabiners as attachment points. The second tier key holders  200  attach to the first tier key holder  100  via fastening mechanisms, namely carabiners  179  in this figure. The structure of the key holder assembly  99  resembles a tree. The number of tiers a key holder assembly  99  represents the depth. The breadth of the key holder assembly  99  refers to the number of key holders on the same tier. The more key holders there are on the same tier, the more breadth the key holder assembly  99  has. There is no limit as to the breadth and the depth a key holder assembly  99  can have. 
         [0085]    The key holder assembly  99  can be easily configured by manipulating the breadth and depths to closely represent the tiered structure of the keys via the fastening mechanisms. For instance, there might be multiple tiers of key holders to represent the multi-tiered structure of the keys.  FIG. 20  shows a two-tiered key holder assembly with first key holder  100  hanging a number of second tier key holders  200 . Any of the first tier key holder  100  and second tier key holders  200  in  FIG. 20  can be replaced with another key holder that has different number of labels or different shapes. The keys  300  are hanging directly on the second tier key holders  200 . 
         [0086]      FIG. 21  shows a two-tiered key holder assembly  99  wherein the first tier comprises a first tier key holder  100  and the second tier comprises of a number of second tier key holders  200 . The first tier key holder  100  uses a carabiner  179  as a fastening mechanism and a mixture of carabiner and snap hook as attachment points. The second tier key holders  200  attach to the first tier key holder  100  via fastening mechanisms, namely the loops  178  in this figure. This figure shows that there could be variations on the key holders to build a similar tree structure. 
         [0087]    The label area  140  of the key holder  100  may adopt any shape such as but not limited to: rectangle, round, hexagon, or octagon. 
         [0088]      FIG. 22  shows a front view of a key holder  100  having a round label area  120 . There are one first tier label  150  and a number of second tier labels  160  disposed on the label area  120  and half key rings  40  attached to the label area  120 . 
         [0089]      FIG. 23  shows a front view of a key holder  100  having a hexagonal label area  120 . There are one first tier label  150  and a number of second tier labels  160  disposed on the label area  120  and half key rings  40  attached to the label area  120 . 
         [0090]    In addition, the label area  120  may be replaced by a labeling block with has a 3-D structure and serves essentially the same function as the label area  120 . The labeling block may adopt any shape such as cylinder, hexagon prism, and polyhedrons. 
         [0091]      FIG. 24  shows a perspective view of a key holder  100  having a labeling block  125  with a dodecahedron shape wherein the half key rings  40  are attach to the middle of the pentagonal facets of the labeling block  125 . There is one first tier label  150  and a number of second tier labels  160  disposed on the labeling block  125 . 
         [0092]    A few applications of the current invention are outlined below, but the key organizing system herein disclosed is not limited to just these applications. 
         [0093]    Apartment Building 
         [0094]      FIG. 25  shows the schematic tiered relationship of the properties in an apartment building, illustrating the tiered relationship of the keys. 
         [0095]    An apartment building may have multiple floors, each floor may have multiple apartment units. The key organizing system can be configured to include two tiers of key holders  100 , wherein the first tier represents the floors, and the second tier represents the units. 
         [0096]    Group of Multi-Family Units 
         [0097]      FIG. 26  shows the schematic tiered relationship of the properties in multiple multi-family properties, illustrating the tiered relationship of the keys. 
         [0098]    This group may consist of multiple properties at different locations. Each property may have one or more rental units. The key organizing system can be configured to include two tiers of key holders  100 . The first tier represents the multiple properties. The second tier represents the units. 
         [0099]    Commercial Building 
         [0100]      FIG. 27  shows the schematic tiered relationship of the properties in a commercial building, building, illustrating the tiered relationship of the keys. 
         [0101]    A commercial building might have multiple tenants. Some tenants might occupy some portion of a floor, some tenants may occupy two floors. In this case, we can use tenants as the first tier. Each tenant might have different room keys. This would be the second tier. There might be three or more tiers depending on how the tenant organizes the keys. 
         [0102]    Although this invention has been described with a certain degree of particularity, it is to be understood that the present disclosure has been made only by way of illustration and that numerous changes in the details of construction and arrangement of parts may be resorted to without departing from the spirit and the scope of the invention.