Abstract:
A packaging apparatus comprising a foam buffer that provides protection of a computer system component during transit, provides ease of use during pre-packing and packing of the component for transport, does not require the need for additional packing components in combination with the packaging assembly, provides shock and vibration protection during transport, and the foam buffer is configured for ease of manufacture, for reduced manufacturing time and for reduced cost. The foam buffer comprises a foam block formed at least in part from a nonplanar foam extrusion to protect the computer system components during transport. A component socket is provided in the foam block for the reception of the component, and the geometry of the foam surrounding the received computer is configured to provide protection and for ease of manufacture. An exterior of the foam block comprises alternating bands of curvilinear ribs and grooves to provide the desired buffering and shock characteristics, and to reduce manufacturing time by promoting air or gas passage from the foam. Alternate embodiments of the nonplanar foam extrusion can comprise a “U” and an “L” shaped foam extrusion, and the foam block can be assembled from a single continuous piece of a foam extrusion or an assembly of multiple extrusions.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
       [0001]    The present application hereby claims the benefit of the provisional patent application of the same title, Ser. No. 60/939,433 filed on May 22, 2007. 
     
    
     FIELD OF THE INVENTION 
       [0002]    The present invention relates, in general, to the protective packaging systems and apparatuses therein, and more particularly to a creating a foam buffer device using specific geometrical configurations for protectively accommodating fragile items such as electronic computer equipment during transport. 
       BACKGROUND OF THE INVENTION 
       [0003]    Fragile devices, such as electronic devices or computer system components, can use foam block packaging to protect the fragile components from unwanted shock and vibration during the transport process. This ensures that the components arrive unharmed and ready for use. Foam block packaging can be placed on opposing ends of a component, and when placed in a cardboard box, suspend the component within the box for transit. Some foam block packaging materials can be limited in size and shape by the manufacturing processes. For example, planar expanded foam materials such as expanded polyethylene foam (EPE) sheet have excellent cost, shock, and vibration characteristics and can be formed by an extrusion process that can involve, foaming, air/gas releasing, pressing, waste peel off, welding processing, and ageing. Post extrusion shrinkage of the foam extrusion can occur with some blowing agents, and this is caused by a natural migration of the blowing agent (gas) through the walls of closed cells within the extruded foam. When shrinkage occurs, the shrunken foamed extrusion can regain the majority of the original size by simply aging the foam. As the foam is aged, air migrates into the bubbles of the foam to re-enlarge the foam extrusion. This aging process can require time (weeks) for the migration of air into the bubbles of the foam, and thicker cross sections will require even more time for the aging process. Thus, thicker cross sections in a non-planar extruded foam profile can incur greater storage/processing costs than thinner profiles. 
         [0004]    The processing of the extrusions can economically limit the thickness of the planar EPE sheet to between about 5 mm to 20 mm. In order to obtain a foam block of sufficient size or shape to protect a fragile component during transit, thicker sheets of EPE foam can be created by laminating or welding multiple sheets together across large areas. This sheet lamination process can produce unwanted voids or separations between large area laminations. When detected, the separations between large area laminations can cause unwanted scrap and wastage of separated foam materials, and when undetected, the separations can adversely affect the buffering protection provided during transit, and could cause unwanted damage to fragile products. Foam blocks formed from planar sheet materials typically provide flat contact areas against a product and against an inside of a box. 
         [0005]    Alternately, EPE foam can also be extruded in other non-planar profiles that offer advantages over the formation of buffer devices from sheets or laminated sheets. For example, the EPE foam can be extruded as a long extrusion of a non-planar shape have a specific geometric profile that can conform to the wall thickness limits between about 5 mm to 20 mm. The geometric profile can have height and width, and can be quite complex in shape. To produce these complex foam extrusions, an extrusion die is created that has an inner opening cut into the desired geometric profile. When hot EPE foam is pushed or extruded through the extrusion die, the contact with the extrusion die both forces the hot foam into the geometric profile of the extrusion die, and cools the hot foam into a long foam extrusion with the specific geometric profile of the extrusion die. With nonplanar extrusions, many desirable formed features can be added to the extrusion profile. Examples of nonplanar foam extrusion profiles can include “X” shapes, “U” shapes, “L” shapes or any other shape that can be extruded through an extrusion die. The geometric nonplanar profile can also reduce or eliminate the need for laminations and can provide nonplanar or non-flat areas of energy absorbing contact such as against the product and against the inside of a box. 
         [0006]    EPE materials requires post processing time to release air or other foaming gasses used during the EPE manufacturing process. This release of gasses causes the extrusion to shrink in size and the extrusion will re-expand to near net size as air migrates back into the foam. This shrinking/expanding process is called aging and thick cross sections of material can require a longer time for the exchange of internal gasses than thinner cross sections of material. Thus, thicker EPE materials can prolong the post processing time needed to produce an aged lot of the EPE material, and can require additional warehouse storage space to wait for the thicker EPE material to age. This lengthened gas exchange process has the effect of reducing the productivity of a unit of warehouse space as thicker materials are processed. 
         [0007]    Consequently, a significant need exists for an improved foam block packaging product which exhibits excellent cost, shock, and vibration characteristics, eliminates lamination failures, and results in reduced processing time and in reduced storage space. 
       BRIEF SUMMARY OF THE INVENTION 
       [0008]    The invention overcomes the above-noted and other deficiencies of the prior art by providing a foam buffer device for protecting a computer system component during transport. The foam buffer device comprises a foam block configured to protect the computer system component. The foam block comprises a socket extending into a top of the foam block, and the socket is configured to engage an end of the computer system component that is inserted within. The socket has at least one wall extending vertically into the block from the top and a horizontal floor at right angles to a bottom of the at least one vertical wall. The foam block also comprises at least one bumper extending outwardly away from the foam block to prevent the computer component from directly contacting a surface other than the at least one vertical wall, and the floor of the socket. And, the foam block further comprises a nonplanar foam extrusion having a length and a first end and a second end. The nonplanar foam extrusion comprising at least a portion of the foam block and in contact with at least a portion of the computer system component. 
         [0009]    In one aspect of the invention, a foam buffer device is disclosed for protecting a computer system component during transport. The foam buffer device comprises a nonplanar foam extrusion having at least one vertical wall, and at least one horizontal wall extending at a right angle to a bottom of the vertical wall. The nonplanar foam extrusion is foldably configured to form a socket from the least one vertical wall and at least one horizontal wall. The socket is sized for the reception of a computer system component within. 
         [0010]    These and other objects and advantages of the present invention shall be made apparent from the accompanying drawings and the description thereof. 
     
    
     
       BRIEF DESCRIPTION OF THE FIGURES 
         [0011]    The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and, together with the general description of the invention given above, and the detailed description of the embodiments given below, serve to explain the principles of the present invention. 
           [0012]      FIG. 1  is an isometric view showing a first foam buffer device and a second foam buffer device oriented for placement on opposite ends of a component to prepare the component for transport within a box, wherein the foam buffer devices are in accordance with the present invention; 
           [0013]      FIG. 2  is an isometric view of a length of a nonplanar “U” shaped foam extrusion configured to be used with a foam buffer device, with the foam extrusion cut to a length and showing a longitudinally extending component channel configured to receive an end of the component within. 
           [0014]      FIG. 3  is an end view of the “U” shaped foam extrusion of  FIG. 2  showing a profile of an end of the foam extrusion, and features thereof; 
           [0015]      FIG. 4  is a side view of a length of a “U” shaped foam extrusion that is extruded with the profile of  FIG. 3  and has a “V” shaped notch cut adjacent to each end with a portion of foam remaining uncut at a sharp of each “V” so that each end can hinge inwardly in the directions shown. 
           [0016]      FIG. 5  is a partial cross section side view of the “U” shaped foam extrusion of  FIG. 4  with each end rotated 90 degrees at each uncut foam hinge to form a first embodiment of a folded foam buffer device fabricated from a single continuous piece of a foam extrusion 
           [0017]      FIG. 6  is an end view of a profile of a foam end extrusion. 
           [0018]      FIG. 7  is an isometric view of an assembly of a second embodiment of a foam buffer device formed from a length of the “U” shaped foam extrusion profile of  FIG. 3 , and further including a portion of the foam end extrusion of  FIG. 6  attached to each end of the “U” shaped foam extrusion. 
           [0019]      FIG. 8  is an end view of a length of a nonplanar “L” shaped foam extrusion showing the “L” shaped end profile and features thereof 
           [0020]      FIG. 9  is an isometric view of a length of the “L” shaped foam extrusion with angled cut ends, and with a plurality of “V” shaped notches cut into the foam so that the foam extrusion can hinge about an uncut foam portion at the sharp of the “V” of each notch. 
           [0021]      FIG. 10  is an isometric view of the cut and notched “L” shaped foam extrusion of  FIG. 9  with the extrusion folded at the foam hinges into an alternate embodiment of a foam buffer device, and orientated to receive a component within. 
           [0022]      FIG. 11  is a section view showing a component at rest supported within an extrusion having arcuate bumpers that provide progressive rate geometry to progressively change the stiffness of the foam under load, and showing each end of the arcuate bumpers having a first height and a first area of contact with a wall of a box. 
           [0023]      FIG. 12  is a section view of  FIG. 11  showing an object impacting a side of a box containing the component supported within the extrusion, and showing the arcuate foam bumpers presenting an increased contact area between the arcuate bumpers and the wall of the box as a result of the impact force to change the compression behavior of the arcuate bumpers from that of  FIG. 11 . 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0024]    The following description of certain examples of the invention should not be used to limit the scope of the present invention. Other examples, features, aspects, embodiments, and advantages of the invention will become apparent to those skilled in the art from the following description, which is by way of illustration, one of the best modes contemplated for carrying out the invention. As will be realized, the invention is capable of other different and obvious aspects, all without departing from the invention. Accordingly, the drawings and descriptions should be regarded as illustrative in nature and not restrictive. 
         [0025]    In  FIG. 1 , an exploded isometric view shows a buffer device  20  of the present invention being placed onto one end of a computer system component  70  prior to transport. Buffer device  20  comprises a foam block  22  formed at least in part from a non-planar foam extrusion (not shown in  FIG. 1 ), and is configured with a component socket  24  to engage with the component  70 . The socket  24  is configured to surround all corners and edges of the computer system component  70 . Buffer device  20  protects the component  70  from shock and vibration that can be encountered during transport. For example, these situations can include drops, and shock and vibratory situations such as those encountered in a warehouse, a shipping port, a train, or in a trucking environment. To complete the buffering protection of component  70  for transport, a second identical buffer device  20 ′ (shown in outline for clarity) is placed over an opposing end of the component  70  to suspend the component  70  between opposing buffer devices  20  and  20 ′. If desired, the assembly of the component  70  with the buffer devices  20  and  20 ′ can be placed into a cardboard box  110 , the flaps  111  folded closed and the box  110  sealed. A component groove or component socket  24  extends partially into the foam block  22  and is sized for reception of a first end  71  of the component  70 . Component socket  24  is configured to surround the inserted end  71  of the component  70  with protective foam, and to provide protective support on both the sides and the inserted end of component  70 . In  FIG. 1 , the component  70  is shown as a computer system device such as a laptop or a notebook computer, but is not limited thereto. The exterior of the buffer device  20  is shown in  FIG. 1  as the smooth foam block  22 , but the non-planar foam extrusions used in the construction of alternate embodiments of the buffer device  20  and the foam block  22  can provide geometric shapes and features that offer advantages that will be described in greater detail below. 
         [0026]    The buffer device  20  can be constructed from a closed cell foam such as but not limited to expanded polyethylene foam EPE. With the non-planar extrusion die process, the blowing agent is induced into molten polyethylene to cause foaming, the foamed material is pushed through the non-planar extrusion die, and the extruded foam cools (as it is extruded) to produce a long closed cell foam extrusion with the same desired non-planar geometric profile as the extrusion die. 
         [0027]    Extruding EPE foam material to a specific non-planar extrusion profile can offer distinct advantages in simplifying the construction of the buffer device, and in producing non-planar geometric shapes with enhanced shock and vibration performance. The extruded non-planar foam profile is easily cut to a usable length and can include features to create at least a portion of the component socket  24  matched to fit the component  70 . For example, in  FIGS. 2 and 3 , an embodiment of a “U” shaped foam extrusion  30  is shown. For this embodiment, EPE foam material is extruded into long lengths from an extrusion die with a generally “U” shaped profile  31 . The extruded foam is then processed, and cut to a desired longitudinal length ( FIG. 2 ). The extruded “U” shaped profile  31  has a first vertical wall  32 , a second vertical wall  33 , and a floor  34  extending horizontally therebetween. The walls  32 ,  33 , and the floor  34  define a inner slot  36  sized for the reception of the component  70  therein extending longitudinally along the “U” shaped foam extrusion  30 . 
         [0028]    The exterior of the U″ shaped profile  31  can further comprise alternating bumpers extending outwardly therefrom and grooves extending inwardly therein along the length of the U″ shaped foam extrusion  30 . As shown in  FIG. 3 , the first vertical wall  32  has upper left bumper  40  extending laterally away from the first vertical wall  32 , and a left corner bumper  42  extending laterally (outwardly) away from the first vertical wall  32  and downwardly (outwardly) away from the floor  34 . As shown, the upper left bumper  40  and the left corner bumper  42  are configured to extend laterally away from the first vertical wall  32  the same amount. The exterior of the second vertical wall  33  is a mirror image of the first vertical wall  32 , and is mirrored laterally around inner slot  36 . The second vertical wall  33  has upper right bumper  43  extending laterally away therefrom, and a right corner bumper  45  extending laterally away from the second vertical wall  33  and downwardly away from the floor  34 . Additionally, right corner bumper  45  and upper right bumper  45  are configured to extend away from the second vertical wall  33  the same amount. An inwardly extending left groove  41  is positioned between the upper left bumper  40  and the left corner bumper  42 , an inwardly extending right groove  44  is positioned between the upper right bumper  43  and the right corner bumper  45 , and an inwardly extending center groove  41  is positioned between the left corner bumper  42  and the right corner bumper  45 . The cross section of inwardly extending grooves  41 ,  44 , and  46  is shown as a an inwardly extending “U” shape but the shape of the grooves can be any other shape such as but not limited to a trapezoid shape, a rectangular shape, or a curved shape, or any combination thereof. The grooves  41 ,  44 , and  46  can be placed to minimize cross sections of “U” shaped foam extrusion  30 , or can be placed to optimize shock and vibrational absorption characteristics. 
         [0029]    The outwardly extending bumpers  40 ,  42 ,  43 , and  45  are shown having arcuate geometric shapes which provides impact and shock protection advantages described in greater detail below. Alternately, other embodiments of the outwardly extending bumpers  40 ,  42 ,  43 , and  45  can be any other shape such as but not limited to a rectangular shape, a trapezoidal shape, a semi-circular shape, a semi-elliptical shape or any other shape that can create a bumper include an angled embodiment or any other geometrical shaped embodiments that can also provide some or all of the impact and shock protection advantages described below. 
         [0030]    The “U” shaped profile  31  is configured to be extrudable, and provides numerous advantages in manufacturing and assembly of the buffer device  20 . Cross sections of the “U” shaped profile  31  can be optimized to minimize thicknesses, and to reduce aging time. For example, auxiliary gas outlet grooves  37  can be located at the intersection of the vertical walls  32 ,  33 , and the floor  34  if desired. Grooves  37  reduce the cross sectional thickness of the bumpers  42 ,  45 , thereby enhancing the passage of blowing gasses from the extrusion, and promoting the passage of air back into the foam during the aging process. 
         [0031]      FIGS. 4 and 5  show a first embodiment of a folded buffer device  55  formed from a single piece of foam extrusion  50  with the U″ shaped profile  31 . In  FIG. 4 , the “U” shaped profile  31  is cut to a length with the inner slot  36  orientated to be accessible from the top. A depth  52  is provided to show the location of an upper surface of the floor  34  within the inner slot  36 . A pair of notches  51  are cut into the foam extrusion  50  adjacent to a left end  53  and a right end  54 . The notches  51  are configured to leave a small uncut portion of material at a sharp of the “V” of the notch to act as a hinge  58 . This enables the left end  53  and a right end  54  of the extrusion  50  to be folded into the folded buffer device  55  ( FIG. 5 ) with the hinge  58  at the outside corners of the folded buffer device  55 . Curved arrows are shown within the notches  51  adjacent to each end  53 ,  54  to illustrate the direction of folding. 
         [0032]      FIG. 5  shows the ends  53 ,  54  folded to produce the folded buffer device  55  formed from the U″ shaped profile  31 . The folded buffer device  55  is shown as a partial section view with an exterior view of the folded foam extrusion on the left, and a cross section of the folded foam extrusion on the right. The partial cross section is taken along lines A-A that extend longitudinally along a center of the floor  34  and show how folding the end  54  upwardly moves a portion of the floor  34  to a vertical position to create a device socket  56  within the folded buffer device  55  for the reception of the component  70 . The folded buffer device  55  can be constrained in the folded shape by the walls of the box  110  when the assembly of the folded buffer device  55  and the component  70  is placed into the box  110  (see  FIG. 1 ). Alternately, the seams  57  can be glued, laminated, or welded to secure the ends  53 ,  54  in the folded positions of  FIG. 5 . Whereas the folded buffer device  55  is shown being formed from a single piece of foam extrusion  50  that is cut, notched, and folded around hinge  58 , the folded buffer device  55  can alternately be formed by severing the hinges  58  to separate the foam extrusion  50  into separate pieces, and then securing the separate pieces together to create the buffer device  55 . Securing the separate pieces together can include welding, gluing, mechanical fasteners, and the like, but is not limited thereto. 
         [0033]      FIGS. 6 and 7  shows an alternate embodiment of an assembled buffer device  65  constructed from the “U” shaped foam extrusion  30  of  FIGS. 2 and 3 . In this embodiment, an end extrusion profile  60 , is extruded with a profile configured to match with the “U” shaped foam extrusion  30 , but lacks the inner slot  36 . End extrusion profile  60  can be extruded, and then sliced into end pieces  62  that can be laminated or welded to the ends of the “U” shaped foam extrusion  30  ( FIG. 7 ). The assembly of the “U” shaped foam extrusion  30  with two end pieces  62  forms the alternate buffer device  65  with an end device socket  66  extending therein. As shown in  FIG. 7 , the extrusion profile of the end pieces  62  can match up with the bumpers  40 ,  42 ,  43 , and  45  as well as the grooves  41 ,  44 , and  46  of the “U” shaped foam extrusion  30 . Slicing the end pieces  62  from the end extrusion  61  exposes the newly sliced surfaces of the end pieces  62  to the air. Slicing the end pieces  62  prior to aging reduces the aging time of the end pieces  62  by minimizing the distance that blowing gasses have to travel from the interior of the end pieces  62 , and promotes the passage of air back into the foam during the aging process 
         [0034]      FIG. 8  shows an L″ shaped profile  81  of an alternate “L” shaped foam extrusion  80  ( FIGS. 9 and 10 ). The L″ shaped foam extrusion  80  is used to create yet another alternate embodiment, a folded buffer device  94 , formed from a single piece of foam extrusion ( FIG. 10 ). The “L” shaped profile  81  of  FIG. 8  comprises a single vertical wall  82  with a horizontal wall  83  extending laterally to the right from a base of the vertical wall  82 . An upper bumper  84  extends laterally and outwardly away from an upper end of the single vertical wall  83  and is shown as approximating half of an ellipse in shape. A corner bumper  85  extends laterally and outwardly away from the single vertical wall  82  the same distance as the upper bumper  84 , and extends downwardly away from the horizontal wall  83 . As shown, corner bumper  85  is configured to have a semi-elliptical shape extending laterally on either side of the single vertical wall  83 . A lower bumper  86  extends downwardly from a free end of the horizontal wall  83  the same distance as the lowest point of the corner bumper  85 . Lower bumper  86  is rounded at the end of the downwardly extending portion. An inwardly extending left groove  87  is positioned between the upper bumper  84  and the corner bumper  85 , and an upwardly extending center groove  41  is positioned between the corner bumper  85  and the lower bumper  86 . The cross section of inwardly extending grooves  87 , and  88  is shown as a an inwardly extending “U” shape but the shape of the grooves can be any other shape such as but not limited to a trapezoid shape, a rectangular shape, or a curved shape, or any combination thereof. 
         [0035]    The outwardly extending bumpers  84 ,  85 , and  86  are shown as arcuate or curved bumpers, but can be any other shape such as but not limited to a rectangular shape, a trapezoidal shape, a semi-circular shape, a semi-elliptical shape or any other shape that can create a bumper. These shapes can include an angled embodiment or any other geometrical shaped embodiment that can also provide some or all of the impact and shock protection advantages described below. 
         [0036]      FIG. 9  is an isometric view of the “L” shaped extrusion  80  cut to length. The left end  87  and the right end  88  of the extrusion  80  are each cut at an opposite 45 degree angle as shown. A series of right angle “V” notches  89  are placed into the extrusion  80  at three points such that a small portion of the vertical portion of the foam material remains uncut at a sharp of the “V” of the notch  89  to act as a hinge  97  for folding. Notches  89  are positioned along the length of the extrusion  80  so that long lengths  90  and  92  are the same length, and short lengths  91  and  93  are the same length. When the notched and cut extrusion  80  is folded around the vertically orientated hinges  97  as shown in  FIG. 10 , the “L” shaped extrusion  80  forms a rectangular foam block, and yet another alternate embodiment of the buffer device of  FIG. 1 . Thus, the folded rectangular foam block forms the folded buffer device  94 . 
         [0037]      FIG. 10  is an isometric view showing a rectangular shape of the folded buffer device  94  with an upper component socket  95  extending downwardly therein for the reception of a computer system component  70 ′ such as a desktop computer or other computer system component. An opening  96  is located below the upper component socket  95  and between the horizontal walls  83  and extends vertically through the folded buffer device  94 . The folded buffer device  94  has the vertical wall  82  extending around a perimeter of the folded buffer device  94  with the horizontal walls  83  extending inwardly at a bottom of the rectangular shape to define the upper component socket  95  sized for the reception of the component  70 ′ therein. As configured, when an end of the component  70 ′ is placed into the upper component socket  95 , the horizontal walls  83  will contact a bottom end  75  of the component  70 ′ and the vertical walls  82  will surround a lower portion of walls  76 ,  77  of the component  70 ′. A second identical folded buffer device  94 ′ is shown in outline form above an upper end  78  of the component  70 ′ in an opposite orientation to mount thereon. The folded configuration of the folded buffer device  94  has the bumpers  84 ,  85 , and  86  extending outwardly from the 
         [0038]    Thus, folded buffer devices  94  and  94 ′ can protect the component  70 ′ in three axes of movement, along a vertical axis “A”, along a longitudinal axis “B”, and along a lateral axis “C”. The folded buffer device  94  can be constrained in the folded position by placement into the a box such as box  110  (see  FIG. 1 ), or any (or all) of the notched areas  89  and the ends  87 ,  88  can be secured, glued, laminated or welded to secure folded buffer device  94  in the folded position of  FIG. 10 . Alternately, using the process described above, an alternate embodiment of the folded buffer device  94  can be assembled from separate pieces that are secured together rather than by folding a single cut and notched piece. Securing methods can include mechanical fasteners, welding, gluing or any other method of securing foam pieces together. 
         [0039]    Using a foam extrusion to construct a buffer device such as  20  offers an advantage not found in the prior art. That is, a single extrusion profile can be cut and notched differently to accommodate different sized components. For example, the “L” shaped profile  81  can be used to produce long lengths of foam extrusion  80  that can be cut and notched to match a periphery of a device. In  FIG. 9 , the “L” shaped foam extrusion  80  is shown cut and notched to provide long lengths  90 ,  92  and short lengths  91 ,  93  to match the component  70 ′. If the long lengths  90 ,  92  are kept the same as shown in  FIG. 9 , and the short lengths  91 ,  93  are doubled in length from those lengths shown in  FIG. 9 , an alternate folded buffer device  94 ′ can be created to accommodate a bigger component  70 ″ that has the same length long sides  77  and doubled length short sides  76 ′ from those shown on component  70 ″ 
         [0040]    Thus, one foam extrusion can be used with a wide variety of differently sized products by appropriately cutting the extrusion to the necessary length, and notching the foam extrusion to create a buffer device to fit around the end of the product. This flexibility reduces the number of different buffer devices that need to be stored, and the single foam extrusion can be merely cut to size to match a wide variety of different sized products. This reduces tooling costs by reducing the need for a number of different sized foam extrusions, reduces inventory costs by reducing the number of different type of buffer devices or different foam extrusions that must be stored, and a single foam extrusion can be easily and rapidly cut to a new foldable shape to accommodate a new product with the same cutting equipment. 
         [0041]    In preferred embodiments, the foam bumpers for both the “U” shaped foam extrusion  30  and the “L” shaped extrusion  80  are arcuate or curved as shown in at least  FIGS. 3 ,  6  and  8 , and do not present a flat bumper surface in any direction. When subjected to a shock load, the geometry of the arcuate bumper surfaces are configured with a progressive rate geometry wherein the foam bumpers become stiffer the more they are deflected. That is, the arcuate bumpers act as a soft bumper for small deflections and progressively increase in stiffness as the deflections increase. Since shock loads are applied to the bumpers as pounds per square inch of area, the area of the bumper has a direct effect on the amount of deflection. As the arcuate bumpers are compressed, the area of the bumper in contact with an inner wall of the box increases, and this spreads the shock load over a greater area of the bumper. This progressive rate geometry embodiment of a buffer device can be advantageous to reduce shock and vibrations transmitted to components supported by the progressive rate geometry foam bumpers, and the arcuate geometry can be tuned with different arcuate profiles to optimize the buffering and protection of fragile components. 
         [0042]    One example of a foam extrusion with the progressive rate compression bumpers is shown in a partial cross sectional view of  FIG. 11 . In  FIG. 1 , a component  70  is supported within the “U” shaped foam extrusion  30 , and both are surrounded by the box  110 . The extrusion  30  has arcuate bumpers  40 , and  42  in contact with a left wall  112  of the box  110 . As shown, the point of contact for each bumper  40 ,  42  is a line of contact having a first height  115  and bumpers  40 , 42  have an uncompressed length  116 .  FIG. 12  shows the partial cross sectional view of  FIG. 11  wherein an object  125  has impacted against the left side of the box  110  and the component  70  surrounded by the U″ shaped foam extrusion  30  is being thrown in the direction indicated by the arrow (to the left). The impact of object  125  has compressed the length of the arcuate foam bumpers  40 ,  42  to a compressed length  118  as shown and increased a height of the line of contact to a compressed height  117 . Thus under shock load, the foam bumpers  40 ,  42  progressively compress from the position of  FIG. 11  to the position of FIG. and due to the arcuate geometry of the bumpers, progressively increases the height of the line of contact from  115  to  117  as well as the contact area between the bumpers  40 ,  42  and the wall  112 . Thus, the progressive rate geometry of arcuate bumpers  40 ,  42  progressively changes the 
         [0043]    It should be appreciated that any patent, publication, or other disclosure material, in whole or in part, that is said to be incorporated by reference herein is incorporated herein only to the extent that the incorporated material does not conflict with existing definitions, statements, or other disclosure material set forth in this disclosure. As such, and to the extent necessary, the disclosure as explicitly set forth herein supersedes any conflicting material incorporated herein by reference. Any material, or portion thereof, that is said to be incorporated by reference herein, but which conflicts with existing definitions, statements, or other disclosure material set forth herein will only be incorporated to the extent that no conflict arises between that incorporated material and the existing disclosure material. 
         [0044]    While the present invention has been illustrated by description of several embodiments and while the illustrative embodiments have been described in considerable detail, it is not the intention of the applicant to restrict or in any way limit the scope of the appended claims to such detail. Additional advantages and modifications may readily appear to those skilled in the art. 
         [0045]    For example,