Abstract:
A shelving apparatus includes a frame structure formed with vertical members and horizontal members and a shelf adjustable between positions and supported, at each position, by the vertical members. The vertical members and horizontal members define a volume therebetween, and each of the vertical members include notches formed on a vertical surface of the vertical member. The shelf includes a frame; a product surface coupled with the frame; a first rod coupled to the frame and insertable into at least a portion of a respective notch of one of the vertical members; and a second rod coupled to the frame and insertable into at least a portion of a respective notch of another of the vertical members. The second rod is forcibly biased, by a biasing member coupled with the frame, against at least one of the vertical members.

Description:
TECHNICAL BACKGROUND 
       [0001]    This disclosure relates to supporting consumer products for display and storage, and more particularly, to supporting consumer products on adjustable and/or mobile shelves within a self-supporting frame system. 
       BACKGROUND 
       [0002]    Storage and display of consumer products may be accomplished by a variety of different devices, structures, and methods. In particular, the storage and display of food products and beverages may typically utilize a shelving apparatus consisting of a frame and one or more shelves connected to the frame. The frame, generally, may include four vertical legs, which allow each shelf to be attached to the legs at each corner of the shelf. In such a fashion, many product shelving apparatus may rely almost exclusively on the connection of the shelves to the vertical legs to allow the entire structure to stand upright and support the product. 
         [0003]    Consumer products, such as food and beverage containers, also come in many different sizes and configurations. For example, although particular beverage containers, such as, for example, aluminum cans, are substantially similar in certain dimensions (e.g., diameter), different brands or drink-types may come in containers of varying height. Often, a shelving apparatus designed to support various types of containers may be able to change a distance between shelves to account for the height difference in the containers. In order to change this distance, however, product may need to be removed from the particular shelf or shelves before such a change may take place. Moreover, depending on the number of shelves to be changed and the degree to which such shelves support the shelving apparatus frame, an amount of time and labor required to effect such a change may be great. 
         [0004]    In the case of food and beverage containers, such containers often break or leak the food substance onto the shelving apparatus on which they are supported. Because cleanliness in the storage and display of food and beverages may be of particular concern for certain businesses, such as grocery stores and convenience stores, broken or leaking food and beverage containers may cause problems for a particular shelving apparatus. For instance, various shelving apparatus may be particularly immobile when supporting a capacity of food and beverage product. Thus, food and beverage substances that leak onto a floor below the shelving apparatus may be particularly difficult to remove. In such cases, removal of the entire capacity of food product or even disassembly of the shelving apparatus may be required in order to sanitize the floor. 
       SUMMARY 
       [0005]    This disclosure relates to supporting consumer products for display and storage, and more particularly, to supporting consumer products on adjustable and mobile shelves within a self-supporting frame system for use in, for example, a walk-in cooler or other display area. 
         [0006]    In an example implementation, a shelving apparatus includes a frame structure formed with a plurality of vertical members and a plurality of horizontal members and a shelf adjustable between a plurality of positions within the volume and supported, at each position, by the plurality of vertical members. The plurality of vertical members and plurality of horizontal members define a volume therebetween, and each of the vertical members include a plurality of notches formed on a vertical surface of the each vertical member. The shelf includes a frame; a product surface coupled with the frame; a first rod coupled to the frame and insertable into at least a portion of a respective notch of the plurality of notches of one of the vertical members; and a second rod coupled to the frame and insertable into at least a portion of a respective notch of the plurality of notches of another of the vertical members. The second rod is forcibly biased, by a biasing member coupled with the frame, against at least one of the vertical members. 
         [0007]    In a first aspect combinable with the general implementation, the frame structure further includes at least one fill member insertable into a particular vertical member of the plurality of vertical members. 
         [0008]    In a second aspect combinable with any of the previous aspects, the fill member includes a plurality of recesses that align, when the fill member is inserted into the particular vertical member, with the plurality of notches of the particular vertical member. 
         [0009]    In a third aspect combinable with any of the previous aspects, the at least one fill member includes a plurality of fill members. 
         [0010]    In a fourth aspect combinable with any of the previous aspects, each of the plurality of fill members is insertable into one of the vertical members. 
         [0011]    In a fifth aspect combinable with any of the previous aspects, each fill member includes a plurality of recesses that align, when the each fill member is inserted into the one of the vertical members, with the plurality of notches of the one of the vertical members. 
         [0012]    In a sixth aspect combinable with any of the previous aspects, the first rod is insertable into at least a portion of a particular recess of the plurality of recesses of the fill member. 
         [0013]    In a seventh aspect combinable with any of the previous aspects, the portion of the particular recess includes about half of a width of the recess. 
         [0014]    In an eighth aspect combinable with any of the previous aspects, at least one of the vertical members includes a plurality of vertical member segments that are coupled together to form the at least one vertical member. 
         [0015]    In a ninth aspect combinable with any of the previous aspects, the at least one fill member includes a plurality of fill member segments. 
         [0016]    In a tenth aspect combinable with any of the previous aspects, each of the fill member segments is coupled to at least one of the plurality of vertical member segments. 
         [0017]    An eleventh aspect combinable with any of the previous aspects further includes a plurality of adjustable leg members coupled to the frame; and a plurality of feet, each foot coupled to a particular adjustable leg member. 
         [0018]    In a twelfth aspect combinable with any of the previous aspects, each position of the plurality of positions includes a distinct height of the shelf within the volume, and a distinct angle of the shelf relative to the plurality of vertical members. 
         [0019]    A thirteenth aspect combinable with any of the previous aspects further includes a mobile shelf that includes a mobile shelf frame, a mobile shelf product surface coupled to the mobile shelf frame, and a plurality of casters coupled to the mobile shelf frame, the mobile shelf positionable within the volume. 
         [0020]    In a fourteenth aspect combinable with any of the previous aspects, the product surface is integrally formed with the frame. 
         [0021]    In another general implementation, a shelving system includes a first frame, a second frame, a first shelf, and a second shelf. The first frame is formed with a plurality of first vertical members and a plurality of first horizontal members, with the plurality of first vertical members and plurality of first horizontal members defining a first volume therebetween, and each of the first vertical members including a plurality of notches formed on a vertical surface of the each first vertical member. The second frame is formed with a plurality of second vertical members and a plurality of second horizontal members, with the plurality of second vertical members and plurality of second horizontal members defining a second volume therebetween, and each of the second vertical members including a plurality of notches formed on a vertical surface of the each second vertical member. One of the second vertical members and one of the first vertical members include a first common vertical member of the first and second frames, and another of the second vertical members and another of the first vertical members include a second common vertical member of the first and second frames. The first shelf is adjustable between a plurality of positions within the first volume and supported, at each position, by the plurality of first vertical members, and includes a first frame; a first product surface coupled with the first frame; a first front rod coupled to the first frame and including end portions, each end portion of the first front rod insertable into a portion of a respective notch of the first common vertical member; and a first rear rod coupled to the first frame and including end portions, each end portion of the first rear rod insertable into a portion of a respective notch of the second common vertical member, the first rear rod forcibly biased, by a first biasing member coupled with the first frame, against the second common vertical member. The second shelf is adjustable between a plurality of positions within the second volume and supported, at each position, by the plurality of second vertical members, and includes a second frame; a second product surface coupled with the second frame; a second front rod coupled to the second frame and including end portions, each end portion of the second front rod insertable into another portion of the respective notch of the first common vertical member; and a second rear rod coupled to the second frame and including end portions, each end portion of the second rear rod insertable into another portion of the respective notch of the second common vertical member, the second rear rod forcibly biased, by a second biasing member coupled with the second frame, against the second common vertical member. 
         [0022]    A first aspect combinable with the general implementation further includes a fill member insertable into the first common vertical member, the fill member including a plurality of recesses that align, when the fill member is inserted into the first common vertical member, with a plurality of notches of the first common vertical member. 
         [0023]    In a second aspect combinable with any of the previous aspects, one of the end portions of the first front rod and one of the end portions of the second front rod are insertable into a particular recess of the plurality of recesses of the fill member. 
         [0024]    In a third aspect combinable with any of the previous aspects, each position of the plurality of positions of the first shelf includes a distinct height of the first shelf within the first volume, and a distinct angle of the first shelf relative to the plurality of first vertical members. 
         [0025]    In a fourth aspect combinable with any of the previous aspects, each position of the plurality of positions of the second shelf includes a distinct height of the second shelf within the second volume, and a distinct angle of the second shelf relative to the plurality of second vertical members. 
         [0026]    In another general implementation, a method for supporting consumer products with a shelving apparatus that includes a frame structure formed with a plurality of vertical members and a plurality of horizontal members that define a volume therebetween; and a shelf that includes a frame, a product surface coupled with the frame, a first rod coupled to the frame, and a second rod coupled to the frame, includes adjusting the shelf within the volume to insert the first rod into at least a portion of a first notch of a plurality of notches of a first vertical member of the plurality of vertical members; adjusting the shelf within the volume to insert the second rod into at least a portion of a first notch of a plurality of notches of a second vertical member such that the second rod is forcibly biased against the second vertical member by a biasing member; and applying a force opposed to the biasing force of the biasing member to remove the second rod from the portion of the second notch. 
         [0027]    A first aspect combinable with the general implementation further includes adjusting, while the first rod is supported in the first notch of the first vertical member, the shelf to align the second rod with a second notch of the plurality of notches of the second vertical member that is different than the first notch of the plurality of notches of the second vertical member. 
         [0028]    A second aspect combinable with any of the previous aspects further includes inserting the second rod into at least a portion of the second notch of the plurality of notches of the second vertical member such that the second rod is forcibly biased against the second vertical member by the biasing member. 
         [0029]    In a third aspect combinable with any of the previous aspects, an angle of the shelf relative to the plurality of vertical members when the second rod is supported by the first notch of the second vertical member is different than an angle of the shelf relative to the plurality of vertical members when the second rod is supported by the second notch of the second vertical member. 
         [0030]    A fourth aspect combinable with any of the previous aspects further includes removing the first rod from the portion of the first notch of the plurality of notches of the first vertical member; subsequent to applying the force, removing the second rod from the portion of the first notch of the plurality of notches of the second vertical member; and adjusting the shelf from a first position in the volume to a second position in the volume that is different than the first position. 
         [0031]    A fifth aspect combinable with any of the previous aspects further includes inserting the first rod into at least a portion of a second notch of the plurality of notches of the first vertical member; and inserting the second rod into at least a portion of a second notch of the plurality of notches of the second vertical member such that the second rod is forcibly biased against the second vertical member by the biasing member. 
         [0032]    A sixth aspect combinable with any of the previous aspects further includes adjusting, while the second rod is supported in the first notch of the second vertical member, the shelf to align the first rod with a second notch of the plurality of notches of the first vertical member that is different than the first notch of the plurality of notches of the first vertical member. 
         [0033]    A seventh aspect combinable with any of the previous aspects further includes inserting the first rod into at least a portion of the second notch of the plurality of notches of the first vertical member. 
         [0034]    In an eighth aspect combinable with any of the previous aspects, an angle of the shelf relative to the plurality of vertical members when the first rod is supported by the first notch of the first vertical member is different than an angle of the shelf relative to the plurality of vertical members when the first rod is supported by the second notch of the first vertical member. 
         [0035]    Various implementations of a system for supporting consumer products according to the present disclosure may include one or more of the following features. For example, the system may include a frame structure that is self-supporting and may remain upright during product loading and removal. As another example, the system may include a substructure that minimizes product handling during product exchange and increases safety during a product loading process of the system. Also, the system may include a frame structure that allows a particular adjustable shelf to be installed or removed independently of other adjustable shelves within the system. As another example, the system may include a frame structure that remains decoupled from a walk-in cooler structure without loss of structural integrity. The system may also allow for a frame structure that may be adjustable for plumb at multiple points of the frame structure without removal of product. As another example, the system may include a frame structure that may provide a more sanitary food and beverage support system by allowing less food and beverage substance to become entrained in the frame structure. As an even further example, the system may include a frame structure and moveable product support shelf that allows access to a floor beneath the frame structure to achieve a higher degree of sanitation. The system may also allow consumer product to be supported and displayed at various gravity feed angles on a moveable support shelf. As another example, the system may allow for a moveable support shelf to lockably engage with a frame structure to allow for easier product removal and exchange independent of movement of the frame structure. As another example, the device or system may allow for multiple frame structures to share one or more vertical supports to more efficiently utilize floor space. 
         [0036]    Various implementations of a device or a system for supporting consumer products according to the present disclosure may also include one or more of the following additional features. For example, the device or system may include an adjustable shelf independently moveable and removable of other adjustable shelves, and to incremental positions within the frame structure. Also, the device or system may allow for an adjustable shelf to be vertically adjusted under load from a single side of the adjustable shelf. As an additional example, the device or system may allow for varying gravity feed angles of an adjustable shelf. As yet an additional example, the device or system may allow for a mobile, cantilevered shelf through a rack and pinion gear system. In addition, the device or system may allow an adjustable shelf to receive high loads by utilizing a hook and bar system on a front and back of the shelf. 
         [0037]    These general and specific aspects may be implemented using a device, system or method, or any combinations of devices, systems, or methods. The details of one or more implementations are set forth in the accompanying drawings and the description below. Other features, objects, and advantages will be apparent from the description and drawings, and from the claims. 
     
    
     
       DESCRIPTION OF DRAWINGS 
         [0038]      FIGS. 1A-1C  illustrate an example implementation of a shelving apparatus for supporting and displaying consumer products, including one or more adjustable shelves and a mobile support shelf; 
           [0039]      FIGS. 2A-2B  illustrate closer views of an example implementation of a portion of a shelving apparatus for supporting and displaying consumer products; 
           [0040]      FIGS. 3A-3C  illustrate an example implementation of an adjustable shelf for a shelving apparatus; 
           [0041]      FIGS. 4A-4C  illustrate an example implementation of a mobile shelf for a shelving apparatus; and 
           [0042]      FIG. 5  illustrates an example implementation of a shelving system for supporting and displaying consumer products, including one or more adjustable shelves and one or more mobile support shelves. 
       
    
    
     DETAILED DESCRIPTION 
       [0043]      FIGS. 1A-1C  illustrate an example implementation of a shelving apparatus  100  for supporting and displaying consumer products, including one or more adjustable shelves  300  and a mobile support shelf  400 . The shelving apparatus  100  includes a frame  102  formed by vertical members  104  and horizontal members  106 . In this example implementation, the apparatus  100  includes four vertical members  104  that define a square or rectangular cross section of a volume defined by the frame  102  (e.g., defined by the vertical members  104  and horizontal members  106 ). As illustrated, the horizontal members  106  are coupled to the vertical members  104  (e.g., mechanically or otherwise) at top ends and at bottom ends of the vertical members  104 . In the example implementation, cross members  108  are coupled between adjacent vertical members  104  between the top and bottom ends of the member  104 . Although two cross members  108  per side are shown, there may be more or fewer cross members  108 , as well as, in some examples, cross members  108  may be coupled between other adjacent vertical members  104 . 
         [0044]    As shown, apparatus  100  includes legs  110  coupled to the frame  102 . In this example implementation, the legs  110  are coupled to bottom ends of the vertical members  104 . Feet  112 , in this implementation, are coupled to the legs  110  to provide support for the apparatus  100  on a floor or other planar surface. In some aspects, the legs  110  may be threadingly coupled (or otherwise) to the frame  102  (e.g., vertical members  104  or horizontal members  106 ) to provide for height adjustment of the frame  102 . In some aspects, the feet  112  may also provide for incremental height adjustment of the frame  102 . 
         [0045]    In the illustrated apparatus  100 , one or more casters  116  may be coupled to the frame  102  and/or the mobile shelf  400 . The casters  116  may be height adjustable such that, in situations where the shelving apparatus  100  is set in a desired location, the casters  116  may be raised above the floor or surface, and then lowered to contact the floor or surface once movement of the apparatus  100  is desired. In some implementations, such as is shown in  FIG. 4A , the casters  116  are coupled to the mobile shelf  400  and additional caster or rollers (or wheels) may be coupled to the frame  102 . 
         [0046]    In the illustrated implementations, each vertical member  104  include notches  114  formed on a particular side of the vertical member  104 . As shown, the notches  114  are formed on (or attached to, as in hooks) a vertical surface that faces away from the volume defined by the frame  102 . As shown, the notches  114  are formed substantially the whole height of each vertical member  104 , and may be formed every ½″, 1 inch, 2 inches, or other spacing as appropriate. 
         [0047]    As shown in  FIG. 1C , a particular side of the frame  102  may be substantially open (e.g., without any horizontal members  106  and/or cross members  108  extending across the side between vertical members  104 ). In some aspects, the open side may be positioned on a back side of the frame  102 , and may provide an opening through which the adjustable shelves  300  and/or mobile shelf  400  may be positioned within the volume. 
         [0048]    As further shown in  FIG. 1C , caps  120  may be used to couple or help couple the vertical members  104  and the horizontal members  106  together (e.g., at the top and bottom ends of the vertical members). The caps  120 , in some aspects may provide further structural strength to the frame  102  and, in combination with the vertical members  104 , horizontal members  106  and cross members  108 , provide for a standalone, self-supporting frame  102 . Further providing structural stability in the illustrated implementation are corner pieces  118 , which may also help couple the vertical members  104  and the horizontal members  106 . The caps  120  and corner pieces  118  may be positioned both at the top ends and bottom ends of the vertical members  104 , as appropriate for structural stability. 
         [0049]      FIGS. 2A-2B  illustrate closer views of an example implementation of a portion of the shelving apparatus  100  for supporting and displaying consumer products. As shown in  FIG. 2A , a leg filler  122  may be inserted into each vertical member  104 . For example, the vertical members  104  may be u-shaped structural members with one side open to receive the leg fillers  122 . The open side of each vertical member  104  may receive the leg filler  122 , which includes recesses  125  that, when the leg filler  122  is inserted into the vertical member  104 , align with notches  114  of the vertical member  104 . 
         [0050]    In some aspects, the leg filler  122  may be a molded plastic filler that, for example, may prevent or help prevent contamination from entering the vertical member  104 . The leg filler  122  may also be removable from the cavity of the vertical member  104  and sterilized for added health security. In some aspects, the leg filler  122  may blocks extend over a side wall of the vertical member  104  to prevent injury during adjustment of the shelf  300 , and also to protect a customer or user of the shelving apparatus  100  during normal use. 
         [0051]    Upon alignment of a recess  125  of the leg filler  122  and two notches of the vertical member  104  (e.g., one on either side of the recess  125 ), a support surface  123  is formed which extends across a width of the vertical member  104 . Thus, when a complete (or substantially complete) height of the vertical member  104  is filled with the leg filler  122 , multiple support surfaces  123  are formed as the recesses  125  align with the notches  114 . As explained in more detail with reference to  FIGS. 3A-3C , the support surfaces  123  may receive and support the adjustable shelves  300  within the frame  102 . 
         [0052]    In some aspects, each vertical member  104  may be a single piece that extends an entire height of the frame  102 . In alternative aspects, one or more of the vertical members  104  may comprise multiple segments that are coupled (e.g., mechanically or otherwise) together to form the vertical member  104 . Likewise, in some aspects, each leg filler  122  may be a single piece that extends the entire length of a single vertical member  104 . In alternative aspects, multiple leg fillers  122  may be inserted into a single vertical member  104 . In even other aspects, there may be multiple leg fillers  122  and multiple segments of the vertical member  104  (e.g., in a  1 : 1  ratio or otherwise). Each leg filler  122  may be coupled to the vertical member  104  (or segment of the vertical member  104 ) with a back cover  124  as shown in  FIG. 2A . 
         [0053]    As illustrated in  FIG. 2B , in some implementations, a front rod  308  of the adjustable shelf  300  (described more fully below) may include a recess  322  and a head  324  that secure or help secure the front rod  308  (and thus the shelf  300 ) into the vertical member  104 . As shown, the head  324  of the rod  308  may fit within the recess  125  (e.g., within about half of the recess  125 ), and in contact with the support surface  123 . The recess  322  may be supported on the leg filler  122  such that the head  324  is prevented (all or partially) from moving laterally within the recess  125 . Such a configuration may also be implemented in a back rod  410  of the shelf  300 . 
         [0054]      FIGS. 3A-3C  illustrate an example implementation of the adjustable shelf  300  for the shelving apparatus  100 . For example, as shown in  FIGS. 1A-1C , one or more adjustable shelves  300  may be positioned in the volume of the frame  102  and supported by the frame  102  in the apparatus  100 . Each adjustable shelf  300  may be moved to multiple positions (e.g., heights) within the frame  102 , for instance, supported on the support surfaces  123  formed by the notches  114  and the recesses  125  of the leg fillers  122 . 
         [0055]    In the illustrated implementation, a particular shelf  300 , when loaded with product, can be moved within the volume, or angle adjusted, without removing other shelves  300  above or below the particular shelf  300 . Further, each of multiple shelves  300  within the frame  102  may be added or removed without disturbing other shelves  300  above or below. Additionally, spacing or angle of shelving  300  can be repositioned without unloading any shelves  300 . In some aspects, a single user or operation, moving from front to back, can change a shelf location or angle of a shelf  300 . In some aspects, two operators, front and back, can change a shelf location or angle of a shelf  300 . 
         [0056]    The illustrated example of the adjustable shelf  300  includes a frame  302  and a product surface  304  coupled to the frame to support one or more consumer or other products. Although shown as a wire mesh surface, the product surface  304  may be solid, semi-solid, or otherwise to support the product. Also, in some implementations, the frame  302  and surface  304  may be integrated into a single structure. 
         [0057]    A stop bar  306  is shown coupled to the frame  302  (but also may be coupled to the surface  304 ). In some examples, the stop bar  306  is positioned at a front of the shelf  300  and may provide for a handle or other structure to allow repositioning of the shelf  300  within the frame  102 . Also, the stop bar  306  may stop or arrest movement of product so that the product does not fall off the shelf  300  (e.g., when the shelf  300  is tiled or angled with respect to horizontal). 
         [0058]    A front bar  308  is illustrated as coupled to the frame  302  near a front of the shelf  300  and positioned on an underside of the shelf  300 . As illustrated, the front bar  308  includes ends that extend beyond the frame  302 . As explained more fully below, the ends of the front bar  308  may be positioned in all or a portion of the support surfaces  123  formed by the notches  114  and recesses  125  (or, in some instances, just the notches  114 ). The front bar  308  may thus support or help support the shelf  300  within the frame when engaged in the support surfaces  123 . 
         [0059]    In the illustrated example, a connector  320  is coupled to the frame  302  (or the product surface  304 ) at or near a back end of the shelf  300 . The connector  320 , as shown, includes two connections to the frame  302  with a rod  312  coupled therebetween. A release rod  310  is coupled to the rod  312  with a coupling  314 . As illustrated, the aforementioned structures are positioned on both sides of the shelf  300 . 
         [0060]    As illustrated, positioned between the coupling  314  and one end of the connector  320  is a biasing member  318  (e.g., a spring or other potential energy member) that rides on the rod  312  and is bounded by the coupling  314  on one side and the end of the connector  320  on another side. In some aspects, the biasing member  318  exerts a constant or substantially constant force on the coupling  314  to drive the coupling  318  (and release rod  310 ) toward a front of the shelf  300  as the coupling  318  rides on the rod  312 . A force applied toward a back of the shelf  300 , such as through the release rod  310 , may compress the biasing member  318  as the coupling  314  slides on the rod  312 . As further illustrated in this example implementation, a cover  316  is mounted over the biasing member  318 , for example, to help prevent or prevent debris ingress into the biasing member  318 . 
         [0061]      FIGS. 4A-4C  illustrate an example implementation of a mobile shelf  400  for the shelving apparatus  100 . As shown in  FIG. 1A , for instance, the mobile shelf  400  may be positioned within the volume of the frame  102 , and, in the illustrated implementation, includes the casters  116  attached to a base  406  of the shelf  400 . As illustrated, a frame  402  is mounted to the base  406  and includes or is coupled to a product surface  404 . Like the adjustable shelf  300 , although the product surface  404  is illustrated as a wire mesh surface, the surface  404  may be a solid or semi-solid surface also. 
         [0062]    As shown, a front stop  414  is mounted or attached to the frame  402  near or at a front edge of the shelf  400 . The front stop  414 , in some aspects, may retain or help retain product on the product surface  404 , for example, as the shelf  400  is moved. 
         [0063]    At or near a back end of the shelf  400 , a back rod  410  is mounted on a coupling  422  that rides on a U-member  424  that is coupled to the frame  402 . The coupling  422  is mounted on the U-member  424  adjacent a biasing member  412  (shown covered by a cover  408 ). The biasing member  412  (e.g., a spring or other potential energy device) exerts a force on the coupling  422  to urge the coupling  422  (and back rod  410 ) toward a front of the shelf  400  (e.g., toward the front stop  414 ). 
         [0064]    As illustrated in  FIG. 4C , the mobile shelf  400  may be installed into the frame  102  by inserting or hooking ends of the back rod  410  into a particular pair of notches  128  of brackets  126  that are connected to the frame. As shown, there may be multiple notches  128  formed in the brackets  126 , with each pair of notches  128  corresponding to a particular height of the shelf  400 . For example, the casters  116  may be height adjustable, which may adjust a height of the frame  402  of the shelf  400 . As the height of the frame  402  is adjusted, a height (e.g., above a floor or other surface) of the back rod  410  is adjusted. Thus, multiple sets of notches  128  may be formed in the brackets  126  to accommodate the different heights of the back rod  410 . 
         [0065]    In an alternative implementation of the mobile shelf  400 , the shelf  400  may not engage with the notches  128  to secure the shelf  400  into the frame  102 , but may instead be removeably secured within the frame  102  with a friction fit. For example, there may be leaf spring biasing members attached to the sides of the base  406  that, when the shelf  400  is positioned within the volume, contact the horizontal members  106 . The leaf spring biasing members may provide a friction fit of the shelf  400  with the horizontal members  106 , thereby securing the shelf  400  within the frame  102  without latching the shelf  400  to the frame  102 . 
         [0066]    In operation, one or more adjustable shelves  300  may be positioned in and coupled to the frame  102  in one of many positions (e.g., one of many heights and/or one of many angular positions). For example, in one example operation, an adjustable shelf  300  may be installed in the frame  102  by inserting a front rod  308  into the support surfaces  123  formed by the notches  114  of two of the vertical members  104  and the recesses  125  of leg fillers  122  in the two vertical members  104 . In some aspects, ends of the front rod  308  may be supported in all or a portion of the support surfaces  123 . For instance, each end of the front rod  308  may be supported in about half of the support surface  123 , leaving additional space in the support surface for another front rod to be supported (as explained more fully with reference to  FIG. 5 ). 
         [0067]    As the front rod  308  is supported in the support surfaces  123 , thereby supporting a front portion of the shelf  300 , the release rod  310  may be supported into support surfaces  123  formed by the notches  114  of another two of the vertical members  104  and the recesses  125  of leg fillers  122  in the other two vertical members  104 . As with the front rod  308 , in some aspects, ends of the release rod  310  may be supported in all or a portion of the support surfaces  123 . For instance, each end of the release rod  310  may be supported in about half of the support surface  123 . Once supported, the biasing members  318  may urge the release rod  310  against the vertical members  104  (e.g., against the leg fillers  122 ) so as to firmly hold the shelf  300  in the frame  102 . 
         [0068]    The shelf  300 , once installed in the frame  102 , may be adjusted so as to change an angle relative to horizontal of the shelf  300 . For example, while the front rod  308  is supported at a particular position, the release rod  310  may be adjusted to one of several positions to adjust an angle of the shelf  300  within the frame  102 . While the front rod  308  remains supported in particular support surfaces  123 , the release rod  310  may be removed from support surfaces  123  by exerting a force on the release rod  310  away from the support surfaces  123 . This force counteracts the force of the biasing members  318  and allows the release rod  310  to be removed from the support surfaces  123 . The release rod  310  may then be adjusted up or down to change the angle of the shelf  300 , and then reinstalled in the frame as described above. 
         [0069]    Likewise, an angle of the shelf  300  may be adjusted by adjusting a location of the front rod  308 . While the release rod  310  is help in place in the support surfaces  123 , the front rod  308  may be disengaged from the support surfaces  123  and a front end of the shelf  300  may be raised or lowered to change an angle of the shelf  300 . The front rod  308  may then be reinserted into different support surfaces  123  at the desired angle. 
         [0070]    A position of the shelf  300  in the frame (e.g., up or down along a height of the vertical members  104 ) may also be adjusted. For example, one or both of the front rod  308  and/or release rod  310  may be disengaged from the support surfaces  123  at a particular position and then reengaged with support surfaces  123  at a different position within the frame  102 . The other of the front rod  308  and/or release rod  310  may also be disengaged from the support surfaces  123  at a particular position and then reengaged with support surfaces  123  at a different position within the frame  102 , thereby changing a position of the shelf  300  within the frame. 
         [0071]    In another operation, the mobile shelf  400  may be positioned in and coupled to the frame  102 . For example, in one example operation, the shelf  400  may be installed in the frame  102  by rolling or moving the shelf  400  into the volume of the frame  102  until the back rod  410  is adjacent the brackets  126 . Ends of the back rod  410  may then be engaged into notches  128  of the brackets  126 , as shown in  FIG. 4C . In some aspects, the biasing members  412  may urge the back rod  410  against the brackets  128  in order to secure the shelf  400  within the frame  102 . 
         [0072]    To disengage the shelf  400  from within the frame  102 , the back rod  410  may be removed from notches  128  by exerting a force on the back rod  310  away from the brackets  126 . This force counteracts the force of the biasing members  412  and allows the back rod  410  to be removed from the brackets  126 . The shelf  400  may then be removed from the volume of the frame  102 . 
         [0073]      FIG. 5  illustrates an example implementation of a shelving system  500  for supporting and displaying consumer products, including one or more adjustable shelves  300  and one or more mobile support shelves  400 . As illustrated, the system  500  includes two shelving apparatus  100   a  and  100   b,  with each apparatus including a mobile shelf  400   a/b  and one or more adjustable shelves  300   a/b . Although only two apparatus  100   a/b  are illustrated, the system  500  may include additional shelving apparatus as appropriate. 
         [0074]    In the illustrated implementation of the shelving system  500 , each shelving apparatus  100   a/b  may share common vertical members  502 / 504 , as well as, common horizontal members  506 / 508  and common legs  510 . Each vertical member  502 / 504  may be substantially similar to the vertical members  104  described above, including leg fillers with support surfaces formed by notches of the members  502 / 504  and recesses of the leg fillers. 
         [0075]    As illustrated, adjustable shelves  300   a  and  300   b  may share the common vertical members  502 / 504  and thus be supported at the front and/or the back of the shelves  300   a  and  300   b  on the common vertical members  502 / 504 . For instance, front and/or release rods of the shelves  300   a  and  300   b  may be supported in a particular support surface of the common vertical members  502 / 504 , as ends of the front and/or release rods of the shelves  300   a  and  300   b  may each be supported by about half of the particular support surface as described above. Thus, each shelf  300   a  and  300   b  may be positioned side-by-side at similar positions (e.g., similar heights and/or angles), side-by-side at identical positions (e.g., identical heights and/or angles), and/or side-by-side at different positions (e.g., different heights and/or angles), independently of the other of shelf  300   a  and  300   b,  as well as other shelves  300  positioned within the same shelving apparatus  100   a  and/or  100   b.    
         [0076]    A number of implementations have been described. Nevertheless, it will be understood that various modifications may be made. Accordingly, other implementations are within the scope of the following claims.