Patent Publication Number: US-11647833-B2

Title: Utility rack

Description:
CROSS-REFERENCES TO RELATED APPLICATIONS 
     This application claims the benefit of U.S. Provisional Patent Application No. 63/079,443 entitled “UTILITY RACK” and filed on Sep. 16, 2020, for Jared W. Hanlon, which is incorporated herein by reference. 
    
    
     FIELD 
     This invention relates to shelving systems and more particularly relates to collapsible utility rack systems. 
     BACKGROUND 
     Collapsible utility rack systems are a popular way to add storage in a home, office, garage, warehouse, or other facility. Such systems typically include one or more shelves which are supported by free-standing end supports. The vertically oriented end supports connect to shelf supports. Together, the end supports and the shelf supports provide the rigidity for supporting the shelves and anything placed on the shelves. Typically, end supports are formed of one or more members, which may include diagonal braces. These members are generally formed as a single unitary structure. While strong, unitary structures are large and difficult for packaging and transporting. 
     To overcome this, utility rack systems are available that come unassembled. Such a system uses end supports which are produced and shipped with the vertical end supports and braces as separate individual members. While reducing space in the packaging, the purchaser must still assemble the shelving system, which requires the use of tools and the tightening of many fasteners. If assembled incorrectly, the shelf system is potentially un-safe for storing heavy objects. Further, while only the end support has been discussed, the shelves themselves also require bulky and unwieldly packaging. 
     SUMMARY 
     A system for a utility rack is disclosed. The system includes shelves having a first end, a second end, and a pair of end supports. Each of the pair of end supports is configured to support either the first end or the second end of the one or more elongated shelves. Each of the pair of end supports includes a first vertical member and a second vertical member, an upper cross member pivotally coupled at a first end to the first vertical member and pivotally coupled at a second end to the second vertical member, and a lower cross member pivotally coupled at a first end to the first vertical member and pivotally coupled at a second end to the second vertical member. The utility rack system also includes a diagonal support having a sliding lock mechanism coupling a first end of the diagonal support to the first vertical member. 
     In certain examples, the sliding lock mechanism is movable along a first axis, with reference to the diagonal support, between an unlocked position and a locked position. The sliding lock mechanism also includes a safety lock biased outward substantially perpendicularly with reference to the axis and configured to engage an opening in the diagonal support. 
     In certain examples, the diagonal support includes a base, a pair of sidewalls extending outward from the base to form a channel, and an end tab disposed at an end of the diagonal support. In certain examples, the diagonal support includes a cutout formed in the pair of sidewalls configured to engage a locking pin of the first vertical member. The sliding lock mechanism is disposed within the channel and further comprises a knob configured to pass through a slot formed in the base of the diagonal support, and where the knob is configured to maintain the sliding lock mechanism within the channel. 
     In certain examples, the sliding lock mechanism is configured to, when in the locked position, surround the locking pin such that the sliding lock mechanism together with the cutout encircle the locking pin. The sliding lock mechanism is configured to, when in the locked position, engage the end tab. When the sliding lock mechanism is in the unlocked position, the end support collapses to a collapsed configuration with the first vertical member positioned adjacent to and offset from the second vertical member. 
     In certain examples, the one or more elongated shelves are wire shelves, and are formed of two or more shelf portions removably coupled to each other. The utility rack system also includes, in certain examples, a shelf beam configured to couple at a first end to a first one of the pair of end supports and at a second end to a second one of the pair of end supports. The shelf beam comprises a base and a pair of sidewalls extending from the base to form a longitudinal channel. In certain examples, the system includes a shelf cross support that is coupled at a first end to the shelf beam and at a second end to a second shelf beam, and where the shelf cross support is configured to support one of the one or more elongated shelves. The shelf cross support is configured to nest within the shelf beam or the second shelf beam. In certain examples, the shelf cross support further comprises a surface feature configured to increase the rigidity of the shelf cross support. The shelf cross support further comprises a first side flange and a second side flange, and where the first side flange extends outward a distance that is greater than a distance of the second side flange. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In order that the advantages of the invention will be readily understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the invention and are not therefore to be considered to be limiting of its scope, the invention will be described and explained with additional specificity and detail through the use of the accompanying drawings, in which: 
         FIG.  1    is a perspective view diagram illustrating one example of a shelving or rack system, according to examples of the subject disclosure; 
         FIG.  2    is a perspective view diagram illustrating one example of a vertical member nested in a shelf beam (or shelf support), according to examples of the subject disclosure; 
         FIG.  3    is a perspective view diagram illustrating a partial view of the vertical member, according to examples of the subject disclosure; 
         FIG.  4    is a perspective view diagram illustrating the diagonal member, according to examples of the subject disclosure; 
         FIG.  5    is a perspective view diagram illustrating the sliding lock mechanism, according to examples of the subject disclosure; 
         FIG.  6    is a schematic block diagram illustrating a cross-sectional view of the support member (either cross member or diagonal member) engaging the locking pin of the vertical member, according to examples of the subject disclosure; 
         FIG.  7    is a perspective view diagram of the rack system, according to examples of the subject disclosure; 
         FIG.  8    is a perspective view drawing of a foldable shelf, according to examples of the subject disclosure; 
         FIG.  9    is a perspective view diagram illustrating the stacking bracket, according to examples of the subject disclosure; 
         FIGS.  10   a ,  10   b , and  10   c    are side view diagrams of the end support, according to examples of the subject disclosure; 
         FIGS.  11   a ,  11   b , and  11   c    are cross-sectional diagrams of a shelf support, according to examples of the subject disclosure; 
         FIG.  12    is a perspective view diagram of a foot, according to examples of the subject disclosure; 
         FIG.  13    is a perspective view diagram of a vertical member, in accordance with examples of the subject disclosure; 
         FIGS.  14   a - 14   d    are perspective view diagrams illustrating components for aiding in the protection of the rack system during packaging and shipping, in accordance with examples of the subject disclosure; 
         FIGS.  15   a - 16   c    are various diagrams of a cross support for shelves, in accordance with examples of the subject disclosure; 
         FIGS.  17   a - 17   c    are diagrams illustrating a cross support connection system, in accordance with examples of the subject disclosure; 
         FIG.  18   a - 18   d    are diagrams illustrating a split shelf and coupler, in accordance with examples of the subject disclosure; and 
         FIG.  19   a - 19   c    depict shelf beam couplers, according to examples of the subject disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     Reference throughout this specification to “one embodiment,” “an embodiment,” or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases “in one embodiment,” “in an embodiment,” and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment, but mean “one or more but not all embodiments” unless expressly specified otherwise. The terms “including,” “comprising,” “having,” and variations thereof mean “including but not limited to” unless expressly specified otherwise. An enumerated listing of items does not imply that any or all of the items are mutually exclusive and/or mutually inclusive, unless expressly specified otherwise. The terms “a,” “an,” and “the” also refer to “one or more” unless expressly specified otherwise. The term “and/or” indicates embodiments of one or more of the listed elements, with “A and/or B” indicating embodiments of element A alone, element B alone, or elements A and B taken together. 
     Furthermore, the described features, structures, or characteristics of the invention may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the invention. 
     The schematic flowchart diagrams and/or schematic block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations. It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the Figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. Although various arrow types and line types may be employed in the flowchart and/or block diagrams, they are understood not to limit the scope of the corresponding embodiments. Indeed, some arrows or other connectors may be used to indicate only an exemplary logical flow of the depicted embodiment. 
     Reference to terms such as “left”, “right”, “top”, “bottom”, “front” and “back” are intended for use in respect to the orientation of the particular feature, structure, or element within the figures depicting embodiments of the invention. It would be evident that such directional terminology with respect to the actual use of a device has no specific meaning as the device can be employed in a multiplicity of orientations by the user or users. 
     The description of elements in each figure may refer to elements of proceeding figures. Like numbers refer to like elements in all figures, including alternate embodiments of like elements. 
       FIG.  1    is a perspective view diagram illustrating one example of a shelving or rack system  100 , according to examples of the subject disclosure. The rack system  100  is useful for storing items in a home, office, garage, warehouse, or other facility. The rack system  100 , in certain examples, includes a number of elongated shelves  102  which are supported by end supports  104 . The end supports  104  include vertical members  106  that are joined by one or more cross members  108  (an upper cross member and a lower cross member) to provide rigidity to the end supports  104 , and a diagonal member  111 . As will be described in greater detail below, the rack system  100  of the subject disclosure beneficially is collapsible into a compact package for shipping purposes. 
     The end supports  104  collapse (see  FIGS.  10   a - 10   c   ) and are nestable inside of a channel formed by a shelf beam  109 . The shelves  102  are foldable to reduce an overall footprint. Accordingly, the width of the packaging is sized to accommodate the width of a folded shelf  102 . In some examples, the shelves  102  are folded in half, in other examples, the shelves are folded in thirds along lengthwise borders. Additionally, the rack system  100  of the subject disclosure is rapidly assembled using a shuttle lock system that is slidingly disposed within a diagonal member  111  and locks around a pin (see  FIGS.  3  and  6   ) formed in the vertical member  106 . Although depicted here as a 2-shelf system, any suitable number of shelves is contemplated. 
       FIG.  2    is a perspective view diagram illustrating one example of a vertical member  106  nested in a shelf beam (or shelf support)  109 , according to examples of the subject disclosure. The vertical member  106  and the shelf support  109  are formed of, in certain examples, stamped steel that has a general “C” shape. Stated differently, each of the vertical member  106  and the shelf support  109  care formed having an open channel. The channel of the shelf support  109  is sized to allow the vertical member  106  to nest within the channel of the shelf support  109 . In other words, the opening formed by the “C” shape is sufficient to receive the vertical member  106 . This beneficially reduces the space required to package the vertical members  106  and shelf supports  109 . Each shelf support  109  may be configured to couple with, at each end, a vertical member  106 . 
     Also depicted in  FIG.  2    is the pin  202  as described above with reference to  FIG.  1   . The pin  202  allows the shuttle lock system to couple the diagonal member  111  with the vertical member  106 . This, beneficially, allows for the end support  104  to expand from a collapsed arrangement to a fully extended and locked position without the use of tools. A user only needs to pivot one vertical member  106  away from its opposing vertical member  106 , position an end of the diagonal member  111  on the pin  202 , and slide the shuttle lock system into place, as will be described in greater detail below with reference to  FIGS.  3 - 6   . 
       FIG.  3    is a perspective view diagram illustrating a partial view of the vertical member  106 , according to examples of the subject disclosure. The vertical member  106 , in certain examples, is formed having a pair of opposing sidewalls  302  (or side portions) that extend outward from a face portion (not shown here). The face portion includes a plurality of openings which are configured to engage tabs formed in ends of the shelf beam  109 . The opposing sidewalls  302  extend from the face portion and include multiple openings for receiving various fasteners  301  and locking pins  304 . In other examples, openings formed in the sidewalls are useful for securing accessories to the rack system  100 , including but not limited to, cord holders (see  FIG.  13   ). 
     The cross members  108 , in certain examples, are releasably and pivotally fastenable to a vertical member  106  using the fastener  301 . This, beneficially, allows for the end support  104  to be efficiently packaged. Stated differently, if the cross members  108  were rigidly fastened (e.g., welded, etc.) to the vertical members  106 , then the width of the end support  104  would necessarily have to match a depth of a shelf  102 , and packaging would have to accommodate that width/depth. However, the cross members  108  may be detached from the vertical members  106  and packaged in a position that is substantially parallel to the vertical member  106 . This allows for a much smaller package that has a width defined only by the shelf  102  instead of the shelf  102  and the end support  104 . And, as will be described in greater detail below, the current disclosure contemplates a multi-part shelf that reduces by almost ½, or more, the width of the packaging necessary to package and ship the rack system  100 . 
     In certain examples, the cross member  108  or diagonal member  111  may include a sliding lock mechanism  308 . In certain other examples, each cross member  108  and diagonal member  111  includes a sliding lock mechanism  308  at each end. In other words, each connection between a vertical member  106  and the diagonal member  111  or the cross member  108  is secured with a sliding lock mechanism  308 . The sliding lock mechanism  308 , as will be described in greater detail below, may include a shuttle that is provided with an outer surface selected to engage an inner surface of a channel formed by the diagonal member  111  and slidably engage the channel to move between a locked position (see  FIG.  3   ) and an unlocked position. 
     The sliding lock mechanism  308 , in certain examples, includes a safety lock  310  that locks into an opening in the diagonal member  111 , for example. The sliding lock mechanism  308  may be formed of spring steel that urges the tabs of the safety lock  310  outward. When the tabs encounter the opening in the diagonal member  111 , the tabs pop into position and prevent the sliding lock mechanism  308  from moving relative to the diagonal member  111 . 
     Also depicted is a coupling bracket  900  for connecting vertical members  106 . Vertical members  106  may be manufactured in any suitable length. Typical lengths include, but are not limited to, 3′, 4′ 5′, and 6′. In certain examples, the coupling bracket  900  may be disposed between two 3′ vertical members  106  to achieve a 6′ length. This beneficially allows for greater configuration options for a user, who is able to create 3′ tall or 6′ tall rack systems  100 . As will be described in greater detail below with reference to  FIG.  9   , the coupling bracket  900  is formed with an exterior shape that is configured to slide into a channel formed by the vertical member  106 . In other words, the coupling bracket  900  has an exterior surface profile that corresponds with an interior surface profile of the channel formed by the vertical member  106 . 
       FIG.  4    is a perspective view diagram illustrating the diagonal member  111 , according to examples of the subject disclosure. The diagonal member  111 , like many of the other supports and members, may be formed of a variety of materials, including but not limited to, polymers, metals, composites, etc. In certain examples, the diagonal member  111  is formed of steel in a generally “C” shaped cross-section to increase strength and reduce weight. In certain examples, the supports and cross-members may be formed with a closed hollow-body cross-section (e.g., square tube members). As depicted, the diagonal member  111  is formed with a base  402  and a pair of sidewalls  404  that extend from the base  402 . The base  402  and the sidewalls  404  form a channel  406  which is configured to receive the sliding lock mechanism  308 . 
     Also depicted is a stop tab  408  that extends from an end of the diagonal member  111  (or alternatively, from a cross member  108 ). The stop tab  408  may extend from the base  402  in the same direction as the sidewalls  404 , however the stop tab  408  may define a plane that is perpendicular to planes defined by the sidewalls  404 . The stop tab  408  is configured to function as a back stop for the sliding lock mechanism  308 , and together the stop tab  408  and the sliding lock mechanism  308  substantially surround the locking pin  304 , and lock the cross member  108  or the diagonal member  111  to the vertical member  106 . When the lock mechanism  308  is in the locked position, as depicted in  FIG.  4   , the safety pin  310  pops into locking engagement with openings formed in the sidewalls  404  of the diagonal member  111 . The safety pin  310  maintains the locking mechanism  308  in the locked position. 
       FIG.  4    also depicts a cross-sectional profile of the diagonal member  111  in callout window  412 . Although described here as the diagonal member  111 , this same cross-sectional profile may be applied to the cross members  108 . The cross-sectional profile depicted in the callout window  412  generally depicts an open C-shaped profile having a base  402  and two sidewalls  404  extending from the base  402 . The base  402  may include a strengthening surface characteristic, such as an offset face as depicted. Other bends and profiles are contemplated. Beneficially, this allows for a thinner metal to be used while retaining the same strength rating of a support member having a planar base  402 , which reduces the overall weight and cost of the rack system  100  while maintaining the same load rating. 
       FIG.  5    is a perspective view diagram illustrating the sliding lock mechanism  308 , according to examples of the subject disclosure. The sliding lock mechanism  308 , in certain examples, is formed with a shape configured to conform to a shape of the channel  406  of the diagonal member  111  (or the cross member  108 ). If the diagonal member  111  or the cross member includes a stiffening ridge (as is depicted in  FIGS.  2  and  3   ), the sliding lock mechanism  308  includes a corresponding surface contour. 
     In certain examples, the safety lock  310  extends outward from the sliding lock mechanism  308 . The safety lock  310  may include ears  502  that are coupled to the sliding lock mechanism  308 . The ears  502  may be formed of spring steel and be biased outward laterally (e.g., substantially perpendicular to the longitudinal axis  506 ) as indicated by arrows  504 . As used herein, the term “substantially” refers to plus or minus 10% of the referenced value. For example, when referring to “perpendicularly,” or a 90-degree angle, “substantially perpendicularly” refers to a range between 81 and 99 degrees. As the sliding lock mechanism is moved longitudinally along an axis towards a locking position as indicated by arrow  506 , the ears  502  will lock into place upon encountering an opening in the sidewall  404  of the cross member or diagonal support. A person may release the sliding lock mechanism  308  by simultaneously depressing the protrusions of each ear  502 . 
     The sliding lock mechanism  308 , in certain examples, includes a cutout portion  508  that surrounds a locking pin  304  of the vertical member  106 . When in the locked position, the sliding lock mechanism  308  contacts the stop tab  408  which encloses the locking pin  304 , as is described below in greater detail. 
       FIG.  6    is a schematic block diagram illustrating a cross-sectional view of the support member (either cross member  108  or diagonal member  111 ) engaging the locking pin  304  of the vertical member  106 , according to examples of the subject disclosure. During assembly of the rack system  100 , a first end of the support member, which may be pivotally connected at a second end to a vertical support, is lowered onto the locking pin  304 . A cutout portion  601  in sidewalls of the support member engages the locking pin  304  on three sides. Stated differently, in the depicted example, the cutout portion  601  contacts the locking pin  304  on the top and sides of the locking pin, but leaves the bottom exposed. The sliding lock mechanism  308 , as described above, is movable relative to the support member into a locking position that surrounds the locking pin  304  (i.e., secures the exposed bottom side of the locking pin  304 ) or an unlocked position that allows the detachment of the support member from the vertical member  106 . 
     In certain examples, the sliding lock mechanism  308  includes a knob  602  for increasing or decreasing the sliding resistance of the sliding lock mechanism  308  within the support member. The knob  602  may thread through a slot formed in the base  402  of the support member, and upon tightening the knob  602  draw the sliding lock mechanism  308  towards the base  402 . This beneficially prevents the sliding lock mechanism  308  from rattling around inside the channel and/or potentially falling out of the channel. 
       FIG.  7    is a perspective view diagram of the rack system  100 , according to examples of the subject disclosure. The rack system  100 , as discussed above, is collapsible into a compact package due to the unique coupling system that locks a cross member or diagonal support to a vertical member to form the end supports  104 . Depicted are trifold or bi-fold shelves that also reduce a packages width, and beneficially, cross members and diagonal supports that nest into the shelf supports to reduce the packages height. The end supports  104  (not visible here) are nestable within channels formed by the shelf beams  109 . Shelves  102  are positionable on the top and bottom, as depicted, and the entire rack system  100  is packaged in a package that was not possible with common rack systems. 
       FIG.  8    is a perspective view drawing of a foldable shelf  802 , according to examples of the subject disclosure. The foldable shelf  802 , in certain examples, is a wire mesh shelf that is formed of three equal sized portions. However, two or more (e.g., 2, 3, 4, 5, etc.) portions are also contemplated. Hinge couplings may join together the shelf portions and allow the foldable shelf  802  to collapse to a third of its original size by folding the portions on top of each other. This beneficially allows for much narrower packaging as was depicted in  FIG.  7   . Cross braces (see  FIG.  1   ) are disposed along the length of the foldable shelf between the foldable shelf and the shelf beam  109  to support the foldable shelf  802  when in an extended configuration (as opposed to a folded or collapsed configuration as in  FIG.  7   ). Alternative devices for implementing a shelf are described below in greater detail with reference to  FIGS.  18   a   - 18   c.    
       FIG.  9    is a perspective view diagram illustrating the stacking bracket  900 , according to examples of the subject disclosure. The stacking bracket  900 , in certain examples, is configured to permit the stacking of rack systems  100 . Accordingly, two 3-foot-tall rack systems  100  may be stacked to create a 6-foot-tall rack system. The stacking bracket  900  is shaped with a cross-sectional profile that is selected to be insertable into the end of a vertical member  106 , as depicted. Fasteners (e.g., a nut and bolt) may secure the stacking bracket  900  to the upper and lower vertical members  106 . In other examples, a spring-loaded mechanism similar to the ears  502  of the sliding lock mechanism may be implemented to secure the stacking bracket  900  to one or both vertical members  106 . 
       FIGS.  10   a ,  10   b , and  10   c    are side view diagrams of the end support  104 , according to examples of the subject disclosure. The end support  104  may include one or more cross members  108  and one or more diagonal members  111 . The depicted embodiment illustrates a 3-foot-high rack system  100  end support  104  having two cross members  108  and a single diagonal member  111 . In this example, the cross members  108  may be packaged from a factory fully fastened to opposing vertical members  106 , using pivotable fasteners such as a bolt, to the vertical members  106 . The diagonal member  111  may be fastened at the factory at one end. When collapsed, as shown in  FIGS.  10   b  and  10   c   , the overall length  1002  is less than 6 feet. When in the collapsed position, the vertical members  106  are disposed adjacent to each other, but offset, as depicted. In other words, when collapsed, the ends of each of the vertical members  106  are not aligned like when in the expanded position, but instead they are offset a distance from each other. This, beneficially, allows for the end supports  104  to be packaged with 6-foot-long foldable or split shelves without needing to extend the packaging beyond a length that is required to package the shelves. By shipping the end supports in this manner, the end user only needs to “open” or expand the end support  104  to the fully extended position, and use the sliding lock mechanism  308  to lock the diagonal member  111  to an opposing vertical member  106 . This locks the end support  104  into a usable configuration that is ready to connect to shelf beams  109  in a matter of 20 seconds or less. This is a vast improvement over the typical rack system that is available at home improvement stores, for example, which can take 30 minutes or more to assemble. 
       FIGS.  11   a ,  11   b , and  11   c    are cross-sectional diagrams of a shelf support  109 , according to examples of the subject disclosure. The shelf support depicted in  FIG.  2    may be provided with different cross-sectional profiles. Although three variations are depicted here, others are contemplated. Beneficially, an added surface feature increases the strength of the shelf support  200  and allows for a thinner material to be used, which decreases the weight of the rack system  100 . As depicted, the added bends still allow for a channel to be formed, which is usable for receiving the end supports  104  for compact packaging purposes. 
       FIG.  12    is a perspective view diagram of a foot  1200 , according to examples of the subject disclosure. The foot  1200  may also function as a cap, and is insertable into ends of the vertical members  106  of the end support  104 . In certain examples, the foot  1200  is formed of a rigid polymer material. Alternatively, the foot  1200  may be formed of any suitable material that is capable of supporting the weight of the rack system  100  and its contents. Additionally, during packaging and shipping, the foot  1200  functions as an internal bumper that protects the end supports  104  and the shelf beams  109 . In other words, when the end support  104  is nested within a shelf beam  109 , the foot  1200  provides a bumper between an end of the end support  104  and an end of the shelf beam  109 . During shipping the end supports  104  might slide back and forth within the shelf beams  109 , and foots  1200  prevent damage. The foot  1200  also prevents sharp edges of the end supports  104  from damaging packaging materials, such as a packaging box. 
     The foot  1200 , in certain examples, is configured and dimensioned to be a friction fit within the channel formed by the vertical member  106 . Flanges  1202  extending upward from a foot base  1204  are spaced apart a distance that is selected to cause the flanges  1202  to engage interior surfaces of the channel formed by the vertical member  106 . The foot base  1205  is formed with a shape that is selected to correspond with a cross-sectional profile of the vertical member  106  (see  FIG.  9   ). The ends of the vertical members  106  are configured to receive the foot  1200 , or the coupling bracket  900  as described above. 
       FIG.  13    is a perspective view diagram of a vertical member  106 , in accordance with examples of the subject disclosure. The vertical member  106 , in certain examples, is provided with attachment accessories  1302 . The attachment accessories  1302  may be configured for any number of purposes, including but not limited to, cord minders (as depicted), tool holders, towel holders, etc. It is contemplated that an attachment accessory may be adapted for any suitable purpose. 
     The attachment accessory  1302 , in certain examples, includes a base  1304  and side flanges  1306  that are dimensioned to interface with the vertical member  106 . In other words, the width of the base  1304  is slightly larger than a face portion  1310  of the vertical member  106  so that the side flanges  1306  engage the side portions  1312  of the vertical member  106 . In certain examples, the vertical member  106  is configured with openings  1314  in the face portion  1310  and openings  1316  in the side portion  1312 . The openings  1314 , depicted in the callout for the sake of clarity, are useful for coupling the vertical member  106  with the shelf beam  109  or the attachment accessory  1302 . The openings  1314  engage tabs  1318  formed in the attachment accessory  1302 . Similar tabs are formed in the end portions of the shelf beam  109 , as will be described below in greater detail. 
     The tabs  1318  may be formed by punching a tab from the metal of the base  1304 . In the alternative, the tabs  1318  are fastened to the base  1304  by, for example, welding. The tabs  1318 , in certain examples, are positioned on the base  1304  to correspond with the openings  1314  in the face portion  1310 . As the user slides the attachment accessory  1302  downward, the tabs  1318  engage the angled portions of the openings  1314  and wedge the tabs  1318  into the openings  1314 . The attachment accessory  1302  can only then be removed by lifting the attachment accessory  1302  upward. 
     In certain examples, a pin  1320  is insertable through an opening in the side flange  1306  that passes through openings  1316  in the side portions  1312  of the vertical member  106 . The pin  1320  is of a sufficient length to pass from one side portion  1306  of the attachment accessory to the opposing side flanges or portion  1306 . The pin  1320  is configured to lock the attachment accessory to the vertical member  106 . Additionally, the pin  1320  “cinches” the attachment accessory  1302  to the face portion  1310  and creates an interface that does not wobble or rattle. This, beneficially, is due to an angled portion of the opening  1316  that angles away from the face portion  1310 . As downward pressure is applied to the attachment accessory  1302 , the angled portion causes the pin  1320  to move away from the face portion  1310 , which in turn tightens the attachment accessory  1302  to the face portion  1310 . In certain examples, the angle of the angled portion is in the range of between about 10 and 20 degrees. In other examples, the angle is about 13 degrees. 
       FIGS.  14   a - 14   d    are perspective view diagrams illustrating components for aiding in the protection of the rack system  100  during packaging and shipping, in accordance with examples of the subject disclosure. In certain examples, the rack system  100  may be provided with end caps  1402  for the diagonal member  111  (see  FIGS.  14   a  and  14   b   ). The end caps  1402 , in certain examples, are formed of a material that is capable of protecting the end of the diagonal member  111  during transportation. The end caps  1402 , for example, may be formed of cardboard or rubber. Another benefit of the end cap  1402  is that the end cap  1402  is configured to maintain the lock mechanism  308  in the open or unlocked position. This beneficially improves assembly time by not requiring the user to unlock the locking mechanism  308 . 
     Also depicted is a wire grid bumper  1404  that is insertable between stacked shelves. Beneficially, the wire grid bumper  1404  protects the wire deck shelves from damaging the inside of a shelf beam  109  and prevents contact between the ends of the shelf beams  109 . The wire grid bumper  1404  is configured with multiple flanges that extend perpendicularly from each other, and are useful fore preventing contact between components, in different planes, of the rack system  100  during packaging and shipping. Once assembled, the user may discard of the end cap  1402  and the wire grid bumper  1404 . 
       FIGS.  15   a - 16   c    are various diagrams of a cross support  1500  for shelves, in accordance with examples of the subject disclosure. Various configurations and implementations are depicted, and discussed jointly. The cross support  1500  is configured to span from a first shelf beam  109  to an opposing second shelf beam  109  and provide lateral support to the shelves  102 . One or more cross supports  1500  may be implemented based on an anticipated weight load of the shelf  102 . The cross supports  1500 , in certain examples, are formed of sheet metal formed in a C-channel configuration, as depicted (e.g.,  FIG.  15   b   ). The height of the cross support  1500  is selected to allow the cross-support to be inserted inside the channel  1504  of the shelf beam  109  (see  FIG.  15   d   ). This is useful for shipping as the cross support  1500  may be nested within the shelf beam  109 . This is also useful for assembly as the shelf beam  109  supports each end of the cross support  1500 . 
     In certain examples, the cross support  1500  is formed with cut outs  1505  and surface features  1506 . Cut outs  1505  and surface features  1506  increase rigidity of the cross support  1500 . For example, a raised or off-set planar area (see feature  1506  of  FIG.  15   a   ) may be formed by stamping the feature  1506  in the cross support  1500 . The cut outs  1502  may be formed with folded over tabs  1508  to also increase rigidity. Another benefit of the folded over tabs  1508  and the cut outs  1505  is for portability of the rack system  100  when packaged. For example, when packaged, the cross supports  1500  may be positioned near an edge of the packaging and the cut outs  1505  may be used as hand holds for carrying the packaged rack system  100 . 
     In certain examples, the cross support  1500  includes two side tabs  1508 ,  1510  that form the C-channel cross section (see  FIGS.  15   b  and  16   b   ). In certain examples, the cross support  1500  includes a first side tabs  1508  that is longer than the second side flange  1510 . This beneficially allows for the cross supports  1500  to nest within each other (see  FIGS.  15   c  and  16   c   ). In certain examples, at least one of the side flanges includes a downwardly extending lip  1512  to increase rigidity. 
       FIGS.  17   a - 17   c    are diagrams illustrating a cross support connection system  1700 , in accordance with examples of the subject disclosure. A spring clip  1702  may be positioned at each end of the cross support  1500  for quickly coupling the cross support  1500  with the shelf beams  109 . Each spring clip  1702  may have one or more outwardly protruding buttons that pass through openings in the cross support  1500 . The spring clip  1702  is formed of spring steel that allows the user to depress the buttons  1704  to allow for the coupling/decoupling of the cross support  1500  to the shelf beams  109 . 
     In certain examples, the spring clip  1702  is coupled to the cross support  1500  with a fastener  1706 , such as a rivet. The button  1704  may also be coupled with the spring clip  1702  via a fastener  1706 . Alternatively, the buttons  1704  are integrally formed with the spring clip  1702 . In use, the user will depress the buttons  1704  to insert the cross support  1500  inside the channel  1504  of the shelf beam  109 . The buttons  1704  will pop into place once encountering openings formed in the shelf beam  109 , and thereby lock the cross support  1500  to the shelf beam  109 . The cross supports  1500  are positioned in a generally perpendicular relationship with relation to the shelf beams  109 . 
       FIG.  18   a - 18   d    are diagrams illustrating a split shelf  1800  and coupler  1802 , in accordance with examples of the subject disclosure. The split shelf  1800 , in certain examples, is formed of two or more wire-grid shelf pieces. The depicted embodiment shows a split shelf  1800  formed of two halves, although 3 or more shelf portions are contemplated. The split shelf  1800  may be joined with shelf couplers  1802 . In certain examples, the shelf coupler  1802  is rigidly mounted to a first shelf half (see  FIG.  18   b   ) by the manufacturer. For example, the shelf coupler  1802  may be welded to the first shelf half  1801 . 
     The shelf coupler  1802 , in certain examples, is a substantially planar coupler that is configured to engage four wires of the slit shelf  1800  (see  FIG.  18   d   ). By positioning two wires  1806  under the shelf coupler  1802 , and two wires over, the shelf coupler  1802  provides rigidity to the centerline of the joined shelf halves. In certain examples, the shelf coupler  1802  is welded to wire(s)  1806   a  and/or  1806   b  of a left shelf half  1801  (see  FIGS.  18   b  and  18   d   ). The right shelf half  1803  is removably coupled with the shelf coupler  1802  to form the entire split shelf  1800  (see  FIG.  18   a   ). 
       FIG.  19   a - 19   c    depict shelf beam couplers  1902 , according to examples of the subject disclosure. Shelf beam couplers  1902 , in certain examples, are attached at each end of the shelf beam  109  and couple the shelf beam  109  to the vertical member  106 . Shelf beam coupler  1902  may be welded to the shelf beam  109 . In certain examples, each shelf beam coupler  1902  includes tabs  1904  for engaging openings in the vertical member  106 , as described above. 
     In certain examples, a locking plug  1906  may be inserted into an opening in the shelf beam coupler  1902  to prevent movement of the shelf beam coupler  1902  relative to the vertical member  106 . The locking plug  1906  may include wrench flats, as depicted, for ease of removal by a wrench when necessary. Beneficially, the chamfered surface of the locking plug  1906  align openings of multiple layers of material, such as the shelf beam coupler  1902  and the vertical member  106 . A step in the locking plug  1906  prevents the locking plug  1906  from accidentally coming out of engagement with the vertical member  106 . The locking plug  1906  is usable in other areas of the rack system  100 , for example, for connecting the cross support to the shelf beam, etc. The opening in the shelf beam coupler  1902  may be positioned at the top, as in  FIGS.  19   a  and  19   b   , or near the bottom, as depicted in  FIG.  19     c.    
     In certain examples, the shelf beam coupler  1902  includes a shelf tab  1908  for holding shelves  102  in place, and preventing shelf warping of the decking that may occur when items are placed on the shelf  102 . The shelf tab  1908  extends outward from the shelf beam coupler  1902  towards the shelf  102 , as depicted. Other mechanisms for preventing shelf warping are contemplated. 
     This description uses examples to describe embodiments of the disclosure and also to enable any person skilled in the art to practice the embodiments, including making and using any devices or systems and performing any incorporated methods. The patentable scope of the disclosure is defined by the claims and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal language of the claims.