Abstract:
A coin wrapping machine includes an accumulator section and a coin wrapping section. The accumulator section assembles a coin stack and delivers the coin stack to the coin wrapping section. A puff of compressed air is blown against the coin stack to resist coin flutter while the coin stack is being delivered to the coin wrapping section. The coin wrapping section includes a drive roller and idler rollers that wrap a coin wrapper sheet around the coin stack. The idler rollers do not engage the leading tip portions of the wrapper sheets to reduce the likelihood of the wrapper sheets jamming against the idle rollers.

Description:
RELATED APPLICATION 
       [0001]    This application claims priority from my co-pending U.S. Provisional Patent Application No. 62/032,265 “Coin Wrapping Machine” filed Aug. 1, 2014 at Attorney Docket No. 1-2059-P, which priority application is incorporated by reference as if fully set forth herein. 
     
    
     FIELD OF THE DISCLOSURE 
       [0002]    This disclosure relates to devices that wrap stacks of coins. 
       BACKGROUND OF THE DISCLOSURE 
       [0003]    Coin wrapping machines wrap stacks of like-diameter coins with coin wrapper sheets and secure the wrapped sheets around the coin stack without the use of adhesives or glues. An example of a coin wrapping machine that machine-wraps coin stacks is disclosed in Tsuruda et al U.S. Pat. No. 6,519,921, incorporated by reference as if fully set forth herein. 
         [0004]    The coin wrapping machine includes an accumulator that receives a singulated stream of coins and arranges the coins in a stack. The formed stack of coins is moved into a coin wrapping section of the coin wrapping machine. A coin wrapper sheet (typically made of kraft paper or the like) is fed off a roll to the coin wrapping section. The coin wrapper sheet is closely wrapped around the coin stack. The upper and lower ends of the sheet are crimped by crimp claws or crimp hooks to mechanically secure the wrapped sheet. 
         [0005]    It is desirable to increase the reliability of coin wrapping machines. 
       BRIEF SUMMARY OF THE DISCLOSURE 
       [0006]    Disclosed is a coin wrapping machine having a coin accumulator that quickly gravity-feeds the coin stack to the coin wrapping section. A burst of air is applied against the top-most coin of the coin stack as the coin stack moves into the coin wrapping section to assure that the coins of the coin stack remain in proper horizontal alignment when received into the coin wrapping section. 
         [0007]    The coin wrapping section includes a roller drive assembly that includes a rotary drive member and a drive for the drive member. The drive generates and applies torque causing the drive member to rotate about a vertical drive axis. The drive member engages the coin stack and rotates the coin stack about the vertical stack axis. Idler rollers are spaced around the periphery of the coin stack. Friction between the coin stack and idler rollers cause the idler rollers to rotate with the coin stack. The idler rollers each rotate along a respective vertical axis of rotation. By positively driving only the drive member and friction-driving the idler rollers, construction of the coin wrapping section is simplified and made less expensive. 
         [0008]    A leading edge of a coin wrapper sheet is fed between the drive member and the rotating coin stack. Frictional engagement of the drive member against the sheet drives the sheet past the drive member. The sheet is guided around the coin stack in a downstream wrapping direction to wrap the coins, moving between each idle roller and the coin stack to be wrapped around the coin stack. 
         [0009]    The leading edge of the coin wrapper sheet reaches each of the idle rollers as the sheet is being driven around the coin stack. The sheet is between the idle roller and the coin stack. Each idle roller is designed to first engage and generate line contact with a portion of the sheet upstream from the leading edge of the sheet, or in other words, a leading portion of the sheet moves in the wrapping direction past the idle roller before the idle roller engages the sheet. In this way, the leading edge of the coin wrapper sheet does not first impact against the idle roller before moving past the idle roller. Such impacts may jam the wrapper against the idle roller and impede further downstream movement of the wrapper sheet. 
         [0010]    The idle rollers can be designed to provide clearance for coin wrapper sheets having different leading edge contours or profiles. 
         [0011]    The drive member rotates the coin stack at a first relatively lower rotation speed when initially feeding the coin wrapper sheet around the coin stack. After the leading edge of the sheet has passed the last idle roller, the drive member rotates the coin stack at a second, relatively higher rotation speed for operation of the crimp hooks. The lower speed assures smooth feeding of the coin wrapper sheet past the idle rollers. The higher speed assures proper crimping of the ends of the wrapped sheet against the coin stack. 
         [0012]    After wrapping and crimping is complete, the wrapped and crimped coin stack fall by gravity out of the coin wrapping section and may fall onto a conveyor or chute for further processing. 
         [0013]    Other objects and features of the disclosure will become apparent as the description proceeds, especially when taken in conjunction with the accompanying drawing sheets illustrating one or more non-limiting embodiments. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0014]      FIG. 1  is a schematic side view of a coin wrapping machine; 
           [0015]      FIG. 2  is a side view of the accumulator of the coin wrapping machine of  FIG. 1 , a stack of coins in the stack holding area of the accumulator and a partial stack of coins being formed in the stack-forming area of the accumulator; 
           [0016]      FIG. 3  is a simplified top view of the coin wrapping section of the coin wrapping machine; 
           [0017]      FIG. 4  is a side view of the coin wrapping section shown in  FIG. 3 , a stack of coins in the coin wrapping section and a coin wrapper sheet being fed to the coin wrapping section; 
           [0018]      FIG. 5  illustrates the leading edge of a coin wrapper sheet being fed into the coin wrapping section shown in  FIG. 4 ; 
           [0019]      FIG. 6  is a developed view of a second coin wrapper sheet usable with the coin wrapping machine shown in  FIGS. 1-4 ; 
           [0020]      FIG. 7  illustrates a second embodiment idle roller suitable for use with the coin wrapper sheets shown in  FIGS. 5 and 6 ; and 
           [0021]      FIG. 8  illustrates a third embodiment idle roller suitable for use with coin wrapper sheet in  FIG. 6 . 
       
    
    
     DETAILED DESCRIPTION 
       [0022]      FIG. 1  schematically illustrates a coin wrapping machine having an accumulator  12  disposed above a coin wrapping section  14 . Adjacent the coin wrapping section  14  is a sheet feed station  16  that feeds coin wrapper sheets to the coin wrapping section  14 . The sheet feed station  16  is conventional and so will not be described in greater detail. 
         [0023]    The accumulator  12  forms a stack of coins  18  coaxial with a vertical axis  20  that extends through the accumulator  12  and through the coin wrapping section  14 . The stack of coins  18  gravity-drop from the accumulator  12  along the vertical axis  20  and into the coin wrapping section  14 . After dropping into the coin wrapping section  14  the stack of coins are wrapped by a coin wrapper sheet fed from the sheet feed station  16 . 
         [0024]      FIG. 2  is a side view of the accumulator  12  of the coin wrapping machine  10 . The accumulator  12  forms a stack of like coins to be wrapped. A stack of like US coins of is conventionally formed from 20, 25, 40, or 50 coins (depending on denomination). 
         [0025]    The accumulator  12  includes a coin receiving tube  22  that is coaxial with and extends along the vertical axis  20 . The coin receiving tube  22  extends from an open upper end  23   u  to an open lower end  231 . The interior tube wall  24  has a circular cross-section sized to receive coins of a specific diameter or denomination. The coin receiving tube  22  is divided into an upper stack-forming or pre-stack area  26  and a lower stack holding area  28 . A first horizontal slot opening  30  extends through the tube wall  24  and separates the pre-stack area  26  from the stack holding area  28 . A second horizontal slot opening  32  extends through the tube wall  24  and defines the lower end of the stack holding area  28 . 
         [0026]    A first pneumatic cylinder  34  located adjacent to the slot opening  30  has a piston rod  36  attached to a horizontal plate  38  for reciprocal movement along a horizontal axis through the slot opening  30 . The plate  38  is movable between an extended position shown in  FIG. 2  where the plate  38  is inside the tube  22  and a retracted position (not shown) outside of the tube  22 . When the plate  38  is in its extended position the plate  38  forms the floor of the stack-forming area  26 . 
         [0027]    The pneumatic cylinder  34  or an additional vibratory drive can also be configured and operated to vibrate or oscillate the plate  38  horizontally at a relatively high frequency when the plate  38  is in the extended position. 
         [0028]    A second pneumatic cylinder  40  located adjacent to the slot opening  32  has a piston rod  42  attached to a horizontal plate  44  for reciprocal movement along a horizontal axis through the slot opening  32 . The plate  44  is movable between an extended position shown in  FIG. 2  and a retracted position (not shown) outside of the tube  22 . When the plate  44  is in its extended position the plate  44  forms the floor of the stack holding area  28 . 
         [0029]    The pneumatic cylinder  40  or an additional vibratory drive can also be configured and operated to vibrate or oscillate the plate  44  horizontally at a relatively high frequency when the plate  38  is in the extended position. 
         [0030]    A compressed air line  46  is attached to a source of compressed air (not shown) and includes a discharge nozzle  48  that extends through the tube wall  24  just vertically below the horizontal plane of movement of the plate  38 . The discharge nozzle  48  is disposed to selectively discharge compressed air into the tube  22  in a downward direction indicated by the arrow  50 . 
         [0031]    Operation of the accumulator  12  is discussed next. 
         [0032]    A tube  22  is installed in the accumulator  12  sized for the coin diameter or denomination to be wrapped. Initially the tube  22  is empty. The upper plate  38  is in its extended position to close the bottom of the stack-forming area  26 . The lower plate  44  is in its extended position to close the bottom of the stack-holding area  28 . 
         [0033]    A bearing member  52  (the illustrated bearing member  52  is a steel ball bearing) drops through the open upper end  23   u  of the coin receiving tube  22  and rests on the upper plate  38 . Single like-diameter coins  C  delivered by conveyor or other conventional transport mechanism drop through the open upper end  23   u  of the tube  22  to begin forming a stack of coins in the stack forming area  26  and resting on the bearing member  46 . Vibration or oscillation of the plate  38  while the stack of coins is being formed assists in settling the coins within the tube  22  and forming a satisfactory stack of coins. 
         [0034]    The number of coins to be wrapped by a coin wrapping sheet determines the number of coins to be formed into the coin stack. 
         [0035]    A sensor (not shown) counts the number of coins being dropped into the tube  22  to form the coin stack. When some, but not all, of the coins that will form the coin stack are collected in the stack-forming area  26 , the upper cylinder  34  is actuated to withdraw the plate  38  from the tube  22 . For example, the cylinder  34  may retract the plate  38  when 31 coins of a 40-coin stack or when 41 coins of a 50-coin stack are in the stack-forming area  26 . The bearing member  52  and the partial coin stack fall in the tube  22  to the stack holding area  28  and are supported on the lower plate  44 . The plate  44  may also vibrate to settle the coins supported on the plate  44 . 
         [0036]    Additional coins now drop through the open upper end of the tube  22  and fall onto the coin stack now being formed in the stack holding area  28 . When the full number of coins for the coin stack are received in the stack holding area  28 , the cylinder  34  is actuated and moves the upper plate  38  back to the extended position in the tube  22 . The upper plate  38  thereby recloses the bottom of the stack-forming area  26 . The process of forming a partial stack of coins in the stack-forming area  26  begins again. 
         [0037]      FIG. 2  illustrates the accumulator  12  with a 40-coin stack of US nickels  C  being held in the stack holding area  28  and a partial stack of US nickels  C  being formed in the stack-forming area  26 . 
         [0038]    While a partial stack of coins in the stack-forming area  26  is being formed, the coin wrapping section  14  (described in further detail below) signals that it is ready to receive a coin stack for wrapping. In response, the lower cylinder  40  retracts the lower plate  44 , causing the bearing member  52  and the coin stack supported on the bearing member to fall by gravity through the open lower end  231  of the tube  22  and be received in the coin wrapping section  14  of the coin wrapping machine  10 . 
         [0039]    In the illustrated embodiment a full coin stack drops a greater vertical height dropping from the stack holding area  28  and into the coin wrapping section  14  than a partial coin stack drops from the stack-forming area  26  to the stack holding area  28 . As a result of this greater vertical drop, it has been found that occasionally the uppermost coin of the coin stack will “flutter” in the tube  22  while dropping to the coin wrapping section  14  and will end up tilted and not lay horizontal against the next adjacent coin of the coin stack. The tilted coin prevents wrapping of the coin stack. 
         [0040]    To eliminate tilting of the uppermost coin caused by flutter, the air line  46  is actuated to discharge a “puff” or stream of compressed air when the lower plate  44  retracts to drop the full coin stack into the coin wrapping section  14 . The compressed air stream is directed to impinge against the topmost coin of the coin stack and suppresses or dampens fluttering of that coin. As a result, all the coins of the coin stack are properly aligned flat against one another without tilting when received into the coin wrapping section  14 . 
         [0041]    After the coin stack falls into the coin wrapping section  14 , the lower cylinder  40  moves the plate  44  back to its extended position to close the bottom of the stack holding area  28  in preparation for receiving another partial stack of coins. 
         [0042]      FIG. 3  is a simplified top view of the coin wrapping section  14  of the coin wrapping machine. A “C” shaped coin receiving tube  54  extends along a vertical axis  56  coaxial with the axis  20  and perpendicular to the drawing sheet. The vertically-extending and circumferentially spaced-apart ends  58  of the tube  54  define an opening or slot  60  extending parallel with the tube axis  56 . The tube axis  56  is coaxial with the vertical axis of the accumulator tube  22  so that the coin tube  54  is disposed to receive the bearing member  52  and the coin stack dropped from the stack holding area  14 . 
         [0043]    A rotatable, elongate drive member  62  is adjacent the opening  60  in the tube  52  and rotates along a rotation axis parallel with the tube axis  56 . The drive member  62  is driven by a drive assembly  63  (see  FIG. 4 ) that includes a conventional rotary belt drive for rotating the drive member  62  and a conventional translation drive for translating the drive member towards and away from the tube opening  60  along a path indicated by the double-ended arrow  64 . The drive member  62  is movable along the path  64  between a retracted position away from the tube  54  and a working position wherein the drive member  62  is received in the opening  60  so as to be engageable with the coin stack to rotate the coin stack in the direction indicated by the arrow  66 . An automatic control system  67  (see  FIG. 4 ) operates and controls the drive assembly  63  and sets the working position of the drive member  62  as required for the diameter of the coin stack being wrapped. 
         [0044]    The tube  54  includes additional vertically elongate slots circumferentially spaced from one another and from the opening  60 . The slots receive idle rollers  68 ,  70  that are journaled in the tube  54  for rotation about vertical axes of rotation parallel to the axis  56 . The idle rollers  68 ,  70  are not driven rollers but are free to rotate as will be described in further detail below. 
         [0045]    The outer surfaces of the idle rollers  68 ,  70  cooperate with the outer surface of the drive member  62  to define a circular cylinder  71  tangential with the drive member  62  and the idle rollers  68 ,  70  that extends parallel with the tube axis. The diameter of the cylinder  71  varies with movement of the drive member  62  along the path  64 . 
         [0046]      FIG. 4  is a side view of the coin wrapping section  14  containing a coin stack  72  to be wrapped. The coin stack  72  is supported against a retractable floor  74 . The bearing member  52  spaces the coin stack  72  away from the floor  74  to locate the top and bottom ends of the coin stack  72  in the desired vertical alignment with the sheet feeding station  16  and the crimp hooks (not shown). 
         [0047]    The illustrated embodiment includes two idle rollers  68 ,  70  spaced around the circumference of the coin tube  52 ; additional idle rollers can be used if desired. The idle rollers  68 ,  70  are identical and so only idle roller  68  will be described. 
         [0048]    The idle roller  66  includes a spindle  76  that is parallel with the tube axis  56  and whose ends are carried within the wall of the tube  52 . Mounted on the spindle  76  for free rotation about the spindle axis is a larger diameter roller shaft  78 . The roller shaft  78  has an elongate uniform-diameter body portion  80  that extends from a lower end  82  upwardly and parallel to the tube axis  56 . The lower end  82  is located a slight distance above the center or midplane of a coin stack held in the tube  52  for wrapping. The importance of this feature will be discussed in more detail below. As can be seen in  FIG. 3 , the radially inner side of the roller shaft body portion  80  is slightly inside the inner wall of the tube  52 . 
         [0049]    Operation of the coin wrapper section  14  is described next. 
         [0050]    A coin receiving tube  54  and the idle rollers  68 ,  70  are installed in the coin wrapping section  14 . The coin receiving tube  54  is sized to receive the coin diameter or denomination to be wrapped. The idle rollers  68 ,  70  are selected based on the coin diameter or denomination to be wrapped, and, as described in more detail below, based on the shape of the leading end of the coin wrapping sheet to be used for wrapping. Operation of the coin wrapper section  14  utilizing conventional coin wrapper sheets having a “V”-shaped leading end will be described. 
         [0051]    The floor  74  is placed in its operating position shown in  FIG. 4  to close the coin receiving tube  54 . A stack of coins  72  and the bearing member  52  falls from the accumulator  12  to properly place the coin stack  72  into position in the coin wrapping section  14  for wrapping as previously described. The drive member  62  is moved from its retracted position to its working position to be placed against the coin stack  72 . The drive member  62  and the idler rollers  68 ,  70  now define a cylinder  71  tangential with the drive member and idle rollers and whose diameter is effectively the same diameter as the coin stack. The drive member  62  urges the coin stack  72  against the idle rollers  68 ,  70 , causing the drive member  62  and the idle rollers  68 ,  70  to engage and press against coins of the coin stack. The rotary drive causes the drive member  62  to rotate at a first, relatively slower rotation speed. Friction causes the coin stack  72  and the idler rollers  68 ,  70 , to also rotate at the first speed. 
         [0052]    A coin wrapper sheet  84  having a conventional “V” shaped leading end  86  is cut from a supply roll (not shown) and fed along a feed path  88  (see  FIG. 3 ) into a pinch point between the drive member  62  and the coin stack  72 . 
         [0053]    The drive member  62  feeds the wrapper sheet  84  against the inner wall of the tube  54  whereby the inner wall of the tube  54  guides the sheet  84  in a downstream direction around the coin stack  72 . The sheet  84  first passes the upstream idle roller  68  and then the downstream idle roller  68  as the sheet wraps around the coin stack  72 . 
         [0054]      FIG. 5  illustrates the sheet leading end  86  approaching and passing the upstream idle roller  68  as the sheet  84  is driven in the circumferential direction around the coin stack  72 . The tip portion  90  of the leading edge  76  is horizontally aligned with the center or midplane of the coin stack  72  and so is slightly below the lower end  82  of the roller shaft body portion  80  when the tip portion  90  reaches the idle roller  68 . The tip portion  90  begins to move past the idle roller  68  without the sheet  84  contacting the idle roller  68 . As the tip portion  90  of the sheet leading end  86  moves past the idle roller  68 , an upstream portion of the sheet leading end  86  enters the pinch point between the idler roller  68  and the coin stack  72 . The outer surface of the roller shaft body portion  80  engages the upper portion of the leading end  86  away from or upstream from the sheet tip portion  90 . The roller shaft portion  80  begins to make line contact with the wrapper upstream from the tip portion  90 . Because the tip  90  has already began moving past the idle roller  68  without touching the idle roller  68 , movement of the sheet  84  past the idle roller  68  is not initially impeded by contact of the tip portion  90  with any portion of the idle roller  68 . Continued motion of the sheet  84  past the idle roller  68  is guided and urged by the line contact between the sheet  84  and the idle roller body portion  80 . 
         [0055]    The sheet  86  moves past the downstream idle roller  70  without being impeded in like same manner as described immediately above with relation to the upstream idle roller  68 . 
         [0056]    After the leading end  86  of the coin wrapper sheet  84  passes the last downstream idle roller  68 , the rotation speed of the drive member  62  increases to rotate the coin stack at a second, higher rotation speed. Conventional crimping hooks (not shown) then approach the ends of the coin stack  68  to crimp the upper and lower ends of the tube being formed by the coin wrapping sheet  76  being wrapped around the coin stack  72 . Conventionally the length of the coin wrapper sheet  84  is sufficient to wrap two layers of sheet around the coin stack. 
         [0057]    After wrapping and crimping, the floor  70  is retracted and the bearing member  52  and the now wrapped-and-crimped coin stack  72  fall by gravity out of the coin wrapping section  14  and onto a chute or conveyor (not shown) for further processing. The bearing member  52  is re-circulated to the accumulator  12  for reuse. 
         [0058]    The illustrated coin wrapper sheet  86  is a conventional coin wrapper sheet in which a single “V” cutter cuts the “V” shaped trailing end of one coin wrapper sheet from a supply roll while thereby simultaneously cutting the “V” shaped leading end of the next following coin wrapper sheet yet to be cut away from the supply roll. The tip portion  90  of the leading end  86  of the sheet  84  is the leading-most portion of the sheet  84 , that is, the tip portion  90  leads or precedes the remainder of the sheet  84  along the feed path  88  and around the coin stack  72  during wrapping. 
         [0059]      FIG. 6  illustrates a second embodiment coin wrapper sheet  92  cut from the supply roll by a “W” shaped cutter that cuts a “W” shaped trailing end  94  of one coin wrapper sheet while simultaneously cutting a “W” shaped leading end  96  of the following coin wrapper sheet. The leading end  96  of the coin wrapper sheet  92  has two spaced-apart, rounded tip portions  98 ,  100  that are the leading-most portions of the sheet  92 . The tip portions  98 ,  100  lead or precede the remainder of the leading end of the sheet  92  along the feed path  88  and around the coin stack during wrapping. 
         [0060]      FIG. 7  illustrates an idle roller  102  configured for use in the coin wrapping section  14  when wrapping coin wrapping sheets  92  having a “W” shaped leading end  96 . The idle roller  102  is shown over a coin wrapping sheet  92 , with the idle roller  102  and the sheet  92  in the same relative position along the rotational axis of the roller  102  as during wrapping of the coin stack. The leading tip portions  98 ,  100  of the sheet  92  move along developed longitudinal axes  104 ,  106  as the sheet  92  moves past the roller  102  and around the coin stack. 
         [0061]    In this embodiment the idle roller  102  extends along a substantial length of the coin stack and has an intermediate reduced diameter portion  104  that separates axially opposite larger diameter body portions  110 ,  112 . The coin tube used in the coin wrapping section  14  is modified from the illustrated coin tube  52  such that the idle roller  102  is vertically centered with the center or midplane of the coin stack being wrapped. The enlarged diameter body portions  110 ,  112  are spaced above and below respective tip axes  104 ,  106  and enable the leading tips  98 ,  100  of the sheet  92  to move past the idle roller  102  without engaging the idle roller  102 . The enlarged diameter portions  110 ,  112  first engage upper and lower portions of the sheet  92  away from the tips  98 ,  100  after the tips  98 ,  100  have moved past the idle roller  102  to guide the sheet  92  around the coin stack  72 . 
         [0062]    The roller shaft  102  can also be used with the “V” sheet  84  because the sheet leading end  86  moves past the reduced diameter portion  108  and the enlarged diameter portions  110 ,  112  first engage the sheet  84  away from the leading end  86 . 
         [0063]      FIG. 8  illustrates an idle roller  114  for use with “W” wrapping sheets  92 . The idle roller  114  includes upper and lower large-diameter portions  116 ,  118  disposed on opposite sides of a centered large diameter portion  120 . The upper roller portion  116  and the centered roller portion  120  are spaced apart by a reduced-diameter portion  122  that is aligned with the tip axis  104 . The lower roller portion  118  and the centered portion  120  are spaced apart by a reduced-diameter portion  124  that is aligned with the tip axis  106 . The roller portion  118  and the roller portion  120   
         [0064]    The reduced-diameter roller portions  122 ,  124  enable the leading tip portions  98 ,  100  of the sheet  92  to move past the idle roller  114  without engaging the idle roller  114 . The large-diameter roller portions  116 ,  118 ,  120  then engage and make line contact with the leading end of the wrapper sheet  92  away from the leading tip portions  98 ,  100  after the tip portions  98 ,  100  have moved past the roller  114 . 
         [0065]    The coin receiving tubes  22 ,  54  are preferably formed as a single integral tube that carries the idle rollers. This enables quick and efficient setup of the coin wrapping machine  10  change out of the tubes and idle rollers when transitioning from one coin denomination to another. 
         [0066]    Another embodiment of an idle roller suitable for use with a “W” sheet  92  is similar to the idle roller  114  but includes only one large-diameter portion  116  or  118 . Yet another embodiment of an idle roller suitable for use with a “W” sheet  92  omits the center large diameter portion  120  and may optionally omit one of the large-diameter portions  116 ,  118 . An idle roller having a single large diameter portion  116  or large diameter portion  118  is similar to the idle roller  68  but with the large diameter portion of the idle roller positioned adjacent a respective tip axis  104  or tip axis  106 . 
         [0067]    While this disclosure includes one or more illustrative embodiments described in detail, it is understood that the one or more embodiments are each capable of modification and that the scope of this disclosure is not limited to the precise details set forth herein but include such modifications that would be obvious to a person of ordinary skill in the relevant art and fall within the purview of the following claims.