Patent Description:
Dishwashers have been and are becoming more and more standard in homes. Dishwashers may provide for automatic washing of dishes arranged on various racks within the dishwasher. These racks may be movable from the interior of the dishwasher cabin so as to be accessible to the user for loading and unloading. Efficiency both in space saving, as well as loading capabilities, is an important feature for personal use dishwashers.

<CIT> discloses a dishwasher provided with a tray that can be only extended in a direction towards the outside of the tub, particularly when the rack is in the extended position.

<CIT> discloses a dishwasher with a rack slidably engaged to the tub and moveable outside the tub and a tray arranged on the rack via a hinged support.

According to the invention, an automatic dishwashing device includes a tub defining a hollow dishwashing cavity having a back, top, bottom, and two sides and is accessible via an access opening at a front of the cavity, a rack slidably disposed within the tub and moveable in a longitudinal direction between a stored position within the tub to an extended position where the rack extends outside of the tub, and a tray slidably engaged with the rack for sliding movement in the longitudinal direction, wherein the tray is configured to be retained within the tub when the rack is in the extended position.

In a certain embodiment, the tray is configured to extend outside the tub when the rack remains in a position inside the tub. In at least one embodiment, the rack includes a support rod extending in the longitudinal direction, the tray is configured to engage and slide along the support rod in a longitudinal direction, and/or the tray configured to a friction fit with the support rod to prohibit sliding there along. In another embodiment, a lever is arranged within the tub and configured to selectively engage the tray between a fixed and unfixed positions, wherein in a fixed position the tray is configured to move with the rack and in the unfixed position the tray is configured to be substantially retained within the tub when the rack is in the extended position. In at least one embodiment, the tray includes a plurality of projection rows in the longitudinal direction, the projection rows include perpendicular projection rows arranged in the longitudinal direction, and/or each of the projection rows are distinct and spaced from the other projection rows and configured to receive utensils.

In one or more embodiments, a retention mechanism is arranged on each side of the tub adjacent to the tray to engage and maintain the tray within the tub while the rack is in the extended position. In another embodiment, the tray includes a first portion and a second portion distinct from the first portion, wherein the first portion has a greater depth than the second portion.

The embodiments of the present invention are pointed out with particularity in the appended claims. However, other features of the various embodiments will become more apparent and will be best understood by referring to the following detailed description in conjunction with the accompanying drawings in which:.

Disclosed herein is an automatic dishwasher assembly having a slidable tray attached to a rack for receiving dishes or other kitchen equipment for automatic washing. The slidable tray may be arranged above and slidable along the rack, both in an extended position and well as in a stored position within the dishwasher. The slidable tray may be configured to cover at least a portion of the rack when the rack is extended to allow the tray to be loaded and unloaded. Additionally, the slidable tray may be configured to be retained within the dishwasher while the rack is extended to allow for the rack to be loaded and unloaded without the slidable tray creating an obstruction. The slidable tray may also be slidably extendable from the dishwasher, independently from the rack, to allow for loading and unloading of the slidable tray without extension of the rack out of the dishwasher.

To facilitate the positioning, the slidable tray may be slidably arranged on a mechanism attached to the rack. For instance, the slidable tray may be arranged on a pair of parallel rods extending upward from the rack and extending longitudinally from the front to the back on each side of the rack. The slidable tray may define a utensil area with a lip on each side of the utensil area. An engagement mechanism is located outboard of the side lips and is configured to engage with the respective rod to maintain the slidable relationship therewith so to allow the tray to slide longitudinally along the rods. The utensil area of the tray may define a plurality of carefully positioned projections or areas configured to receive various dining utensils such as knives, chopsticks, etc., that may be difficult to store within a rack or a conventional silverware tray or basket directly. Through use of the slidable tray, difficult-to-load items may be washed during a cleaning cycle, without reducing the rack space available for other kitchen equipment and without blocking access to the rack below.

<FIG> illustrates an example front perspective view of a dishwasher <NUM> in accordance with one example embodiment. The dishwasher <NUM> may be an automated appliance configured to clean kitchen equipment placed within the dishwasher <NUM>. The kitchen equipment may include tableware such as dishes, glassware, cutlery and other utensils, and well as food preparation equipment such as pots and pans, slicers, presses, and peelers. To perform the cleaning, the kitchen equipment is placed on racks <NUM>, <NUM> inside a tub <NUM> of the dishwasher <NUM>. A door assembly <NUM> is closed to form a watertight seal around the tub <NUM>. Washing liquid and rinsing liquid is propelled from jets onto the kitchen equipment to clean dirt, grease, and other contaminants off the kitchen equipment. Though the examples described herein are generally related to in-home and personal use dishwashers, the same concepts may be applicable to commercial dishwashers as well.

The dishwasher <NUM> may include a frame <NUM> defining the exterior of the dishwasher <NUM>. The frame <NUM> may be configured to interface with components exterior to the dishwasher <NUM> for installation, such as cabinets, countertops, floors, etc. The frame <NUM> may include a top, left side, right side, back, and bottom.

The tub <NUM> may define a hollow cavity or interior of the dishwasher for washing dishes. The tub <NUM> may define an open-face, or access opening <NUM> with walls at the top, left side, right side, back and bottom. A chassis (not individually labeled) may be arranged between the frame <NUM> and the tub <NUM> to maintain the tub <NUM> within the frame. The chassis may support the tub <NUM> and allow for maintaining space between the frame <NUM> and the tub <NUM>.

A door assembly <NUM> may be arranged at a front of the dishwasher <NUM>. The door assembly <NUM> may be attached to the dishwasher at the bottom front edge of the frame <NUM> and may be hinged thereat to move between open and closed positions. In the closed position, the door assembly <NUM> may seal the tub <NUM> at the access opening <NUM>. In the open position, the cavity may be accessible via the access opening. In another example, the door assembly <NUM> may operate as a drawer that can be slidably extended outward from the front of the dishwasher <NUM> to move into the open position, and slidably retracted back into the dishwasher <NUM> to the closed position to seal the tub <NUM>.

The tub <NUM> may house at least one dish rack. In the example shown in <FIG>, the dishwasher <NUM> includes a first dish rack <NUM> and a second dish rack <NUM>. It should be noted that while two disk racks are shown, this is only one example, and dishwashers <NUM> with more or fewer dish racks are possible. For instance, a dishwasher <NUM> may include a single rack or three or more racks.

Regardless of quantity or arrangement, the dish racks <NUM>, <NUM> may be designed to hold the kitchen equipment in place for cleaning by the dishwasher <NUM>. In many examples the dish racks <NUM>, <NUM> are wire frame racks that allow for the flow of liquid within the tub <NUM>. Although racks <NUM>, <NUM> made of plastic, other materials are possible. The dish racks <NUM>, <NUM> may generally include tines or other projections to allow the kitchen equipment to be washed to be held in a spaced apart relationship, such that the washing liquid and rinsing liquid can be projected onto the exposed kitchen equipment surfaces for cleaning these surfaces.

The racks are generally adapted to move between a retracted wash position within the tub <NUM> and an extended position outside the tub <NUM> for loading and unloading of the kitchen equipment to be washed. The racks typically include wheels or rollers for rolling movement along tracks or guides to the retracted and extended positions. In the illustrated example, the first rack <NUM> includes rollers or wheels that cooperate with a first track <NUM> formed at the bottom wall of the tub <NUM>. A door track <NUM> may be arranged on the dishwasher door <NUM> as shown to allow the first rack to be rolled into an extended position when the door <NUM> is open. The second rack <NUM> is generally mounted within the tub <NUM> along a pair of second support rails <NUM> that cooperate with rollers associated with the side walls of the tub <NUM>. Alternatively, the second rack <NUM> may be connected to a telescoping rail that allows the second rack to be extended out of the tub area when the door <NUM> is open. Thus, as shown the first and second racks <NUM>, <NUM> may be movable along their respective track rails <NUM>, <NUM> to allow the respective racks <NUM>, <NUM> to be slidable in and out of the access opening <NUM>.

The dishwasher <NUM> may also include a spray system for spraying liquid within the tub <NUM> during a cleaning cycle. In an example cycle, washing liquid including soap may first be sprayed onto the kitchen equipment, and then once washed, rinsing liquid without soap may then be sprayed onto the kitchen equipment. The spray system may include various jets for providing the liquid onto the surfaces of dishes during the automated washing and rinsing operations. The spray system may include a bottom sprayer <NUM>, middle sprayer <NUM>, and a top sprayer (not shown). In some examples, one or more of the sprayers are positioned at fixed locations within the tub <NUM>. In other examples, one or more of the sprayers may be rotating spray arms with various nozzles configured to spray water onto the dishes maintained on the rack for cleaning. For instance, water jets on the spray arm may be angled so the water sprays out of the spray arms at an angle (e.g., ~<NUM> degrees off the vertical) thereby causing the spray arms to rotate due to the pressure of the exiting water.

During loading, a user may open the door assembly <NUM> into the open position, pull the racks <NUM>, <NUM> from the tub <NUM>, and load the kitchen equipment onto the racks <NUM>, <NUM>. Once completed, the user may push the racks back into the tub <NUM>, move the door assembly <NUM> back to the closed position, and initiate the cleaning cycle. Once the cleaning cycle has been completed, the user may again open the door assembly <NUM> to remove the cleaned kitchen equipment from the racks.

Some dishwashers <NUM> include additional racks (such as three racks instead of two), to allow for the cleaning of more kitchen equipment per run of the dishwasher <NUM>. Yet, each additional rack and track or rail mechanism adds significant cost and manufacturing effort to the dishwasher <NUM>. Also, some kitchen equipment, such as chopsticks, knives, or straws may be difficult to load into the racks due to their dimensions. These items are sometimes placed into removable trays or baskets that fit into or on top of the racks. Still, trays that fit into the racks reduce the space available for other kitchen equipment, and trays that fit on top of the rack block access to the rack below.

A tray <NUM> may be arranged on and above one or more of the racks <NUM>, <NUM>. In the illustrated example, the tray <NUM> is arranged above the second rack <NUM>, but other configurations are possible, such as a single rack with a tray <NUM>, or multiple racks each with a tray <NUM>, or one rack with multiple trays. As with the dish racks <NUM>, <NUM>, the tray <NUM> is configured to receive kitchen equipment for washing. In one non-limiting example, the tray <NUM> may be designed to hold kitchen equipment such as chopsticks or knives that, due to their dimensions, are more difficult to hold in a fixed spaced apart arrangement within the dish racks <NUM>, <NUM> themselves.

In the illustrated example, the tray <NUM> is arranged above the second rack <NUM> and maintained by tray supports <NUM> extending from the second rack <NUM>. As the tray <NUM> is attached to the second rack <NUM>, the tray <NUM> may be moveable along with the second rack <NUM> as the second rack <NUM> is moved between the retracted and extended positions. The tray <NUM> may also be slidable along the tray supports <NUM> so it can be repositioned or maintained in position independent of movement of the second rack <NUM>. For instance, this may allow the tray <NUM> to be maintained within the tub <NUM> while the second rack <NUM> is extended. This is described in further detail below.

<FIG> illustrates an example perspective view of a rack assembly <NUM> including the second rack <NUM> and the tray <NUM> with the tray <NUM> being in a congruent state with the second rack <NUM>. The congruent state indicates that the tray <NUM> is arranged above the second rack <NUM>, as shown in <FIG>. The rack assembly <NUM> may be in a congruent state both when the second rack <NUM> is stored within the tub <NUM>, as well as when the second rack <NUM> is extended through the access opening <NUM> from the tub <NUM>. <FIG>, on the other hand, illustrates an example perspective view of a rack assembly <NUM> including the second rack <NUM> and the tray <NUM> with the tray <NUM> being in a non-congruent state with the second rack <NUM>. In this example, the tray <NUM> may remain inside the tub <NUM> while the second rack <NUM> is extended.

The tray <NUM> may be extendable via the tray support <NUM>. The tray support <NUM> may include a pair of wires, one arranged on each side of the second rack <NUM>, but any other type of support can be employed. The tray supports <NUM> may include a horizontal portion or horizontal rod <NUM> supported by a pair of vertical structures or vertical rods <NUM>, one at each longitudinal end of the second rack <NUM>. The horizontal rods <NUM> may be opposite and parallel to one another. The vertical rods <NUM> may each be attached to the second rack <NUM> via a clasp <NUM>, such a bracket, or may be integrally formed with the second rack <NUM>. The clasp <NUM> may be formed of a plastic or metal material and maintain the vertical rod <NUM> perpendicular to the second rack <NUM>. The vertical rod <NUM> and the horizontal rod <NUM> may be formed of a single piece of metal and may form a bend <NUM> therebetween.

The tray <NUM> may be configured to be maintained above the rack <NUM> during washing. The tray <NUM> may be of a rectangular shape and may include a utensil area <NUM> configured to hold utensils during operation of the dishwasher <NUM>. Lips <NUM> may be arranged on either side of the utensil area <NUM> and provide borders to the utensil area <NUM>. The utensil area <NUM> may include various rows and projections <NUM> configured to hold utensils such as chopsticks, knives, silverware, etc. As shown in <FIG>, two rows of projections <NUM> are provided that extend side-to-side across the tub <NUM> and four rows of projections <NUM> are provided perpendicular thereto. The distances between the projections <NUM> are not equal to provide a structure to hold many different types of utensils. For example, chopsticks may be best positioned on the two rows of projections <NUM> that run side-to-side in the tray <NUM>, whereas a knife may be best positioned across three rows of projections <NUM> that run front-to-back in the tray <NUM>. Each row of projections <NUM> is intentionally set at a different distance from others rows to provide added versatility.

The tray <NUM> also may include one or more engagement area <NUM> disposed vertically above tray support <NUM>. The engagement areas <NUM> include a guide recess <NUM> extending along the sides of the utensil area <NUM>.

The guide recess <NUM> is adapted to receive the tray support <NUM> and specifically in this example a portion of the horizontal rod <NUM> in a sliding engagement. The guide recess <NUM> may be in indentation or may more substantially surround the horizontal rod <NUM>. The guide recess <NUM> may allow the tray <NUM> to slide along the horizontal rod <NUM> while maintaining the tray <NUM> thereon. Alternatively, the guide recess <NUM> may be employed with a friction fit to only allow sliding when a certain force threshold is achieved. In addition to a side of the utensil area <NUM>, engagement area extenders <NUM> are provided. The extenders <NUM> project from the utensil area <NUM> in the front direction. The extenders <NUM> may include an extension of the guide recess <NUM> at each side of the utensil area <NUM>. The lips <NUM> may also be configured as the engagement area <NUM> or to overlap, or cover, a portion of the guide recess <NUM> and horizontal rod <NUM> when in the congruent position.

The tray <NUM> may be manually moved along the horizontal rod <NUM>. To facilitate this manual operation, the tray <NUM> may include a handle <NUM> arranged at the front side <NUM> of the tray. The handle <NUM> may be arranged at the center of the front side <NUM> as shown in <FIG> and <FIG>, though may be arranged left or right of the center along the front side <NUM> (or as a pair of handles <NUM> at each of the left and right). The handle <NUM> may be made of the same material as the tray <NUM> and may provide a smooth and comfortable surface for a user to grip onto. Additionally or alternatively, the handle <NUM> may be coated with a smooth material such as polyurethane, foam, silicone, rubber, etc..

As explained above, the tray <NUM> may be arranged on the pair of horizontal rods <NUM> extending from the rack <NUM>. Thus, the tray <NUM> is maintained by a simple, wire-like assembly instead of being supported by a full separate guide rail or track mechanism on the tub <NUM>. This allows for significant cost savings both due to the decrease in raw materials that would be required to assemble another pair of guide rails, as well as costs associated with assembly time. Furthermore, usability is increased due to the ability to retain the tray <NUM> within the tub while the rack <NUM> is extended. The tray <NUM> may be out of sight and out of mind for the user while the user loads and unloads the rack and until the user desires the tray to store utensils such as knives and chopsticks. Further, the handle and slidability of the tray from back to front and from front to back creates a similar and familiar experience, similar to that of traditional dish racks.

<FIG> illustrated various use examples for the rack assembly <NUM>. <FIG> illustrates the example rack assembly <NUM> in the congruent stored or dishwasher operation state. In this example, both the rack <NUM> and tray <NUM> are stored within the tub <NUM>.

<FIG> illustrates the example rack assembly <NUM> in a congruent extended state. In this example, both the rack <NUM> and tray <NUM> are extended through the access opening <NUM> from the tub <NUM>.

<FIG> illustrates the example rack assembly <NUM> in a non-congruent state. In this example, the rack <NUM> is extended through the access opening <NUM>, while the tray <NUM> is at least partially retained within the tub <NUM> and limits obstruction to the rack <NUM>. In this example, the rack <NUM> may be more accessible for loading with the tray being out of the way.

As explained above, the tray <NUM> may include engagement area extenders <NUM> that project away from the utensil area <NUM> and may be configured to rest on or underneath the horizontal rod <NUM>. As with the engagement area <NUM>, the engagement extenders <NUM> include the guide recesses <NUM> that cooperate with the rod <NUM> in a sliding relationship. The engagement extenders <NUM> may be employed to retain engagement with the tray <NUM> while the tray avoids obstructing access to rack <NUM> as shown in <FIG>. The guide recesses <NUM> and associated engagement extenders <NUM> may be movable across the horizontal rod <NUM> so that the tray <NUM> may move longitudinally with respect to the second rack <NUM>. Referring to <FIG>, as well as <FIG>, in the extended non-congruent state, a portion of the engagement area <NUM> may form a stop <NUM> with the bend <NUM> of the tray support <NUM>, preventing the second rack <NUM> from extending completely past the tray <NUM>. That is, the tray <NUM> may remain attached to and supported by the horizontal rod <NUM>, even in the non-congruent state.

Referring back to <FIG>, in the illustrated examples, the tray <NUM> may be longitudinally shorter (in the front to back direction) than the rack <NUM>. Thus, in the congruent state, the tray <NUM> may partially cover the rack <NUM>, allowing a portion of the rack <NUM> to be exposed for loading, but vertically oriented over the remaining portion of the rack <NUM> arranged below the tray <NUM>. During use, the user may wish to gain access to the tray <NUM>, as well as the rack <NUM> and may move the tray <NUM> between the congruent and non-congruent positions accordingly, or between different locations in the congruent position.

The tray <NUM> may default to being in the stored position. That is, the tray <NUM> may remain within the tub <NUM> when the rack <NUM> is pulled through the access opening <NUM> by the user, as shown in <FIG>. Referring once again to <FIG>, as an example, the tub may include a lever <NUM> configured to pivot about a pivot pin <NUM>. The lever <NUM> may be disclosed in a recess <NUM> located in the tub <NUM>. The lever <NUM> may selectively fix the tray <NUM> to the second rack <NUM>. In the un-locked position, the tray <NUM> does not slide with respect to rack <NUM> when the rack is extended outside of the tub <NUM> and may be configured to be non-congruent with the second rack <NUM>. Alternatively, the lever <NUM> may be pivoted to a lock position. In this position, the lever <NUM> may contact the tray <NUM>, and maintain the tray <NUM> within the second rack <NUM> when the rack <NUM> is slid outside of the tub <NUM>.

Alternatively, the tray <NUM> may be retained within the tub <NUM> via a friction retention mechanism. The retention mechanism may be a block arranged within the tub <NUM> and configured to create friction between the block and the lips <NUM> of the tray <NUM>.

Upon desired access to the tray <NUM>, the user may, via the handle, apply a pull-force to the tray <NUM> to disengage the friction hold between the block and the engagement area <NUM>. The tray <NUM> may thus be extended into the extended state, similar to the example shown in <FIG>.

Additionally or alternatively, the guide recess <NUM> may be held in place on the tray support <NUM> via a friction fit, therefore allowing the tray to move with the rack <NUM> when no additional force is applied to the tray that can overcome the friction fit. Therefore, when in the congruent position while in the tub, the tray <NUM> will remain in the congruent position when the rack <NUM> is slid longitudinally out of the tub. A user may push the tray <NUM> to a non-congruent position within the tub while also holding the rack <NUM> by using a force above the threshold of the friction fit. If in the non-congruent position and the rack <NUM> is returned to the tub <NUM>, the back of the tub <NUM> may apply a force to the tray <NUM> to overcome the friction fit and return the tray <NUM> to the congruent position as the rack <NUM> is slid back within the tub <NUM>.

<FIG> illustrates a top view of another example rack assembly <NUM>. In this example, the tray <NUM> may include engagement area extenders <NUM> (not visible in <FIG>) on both the front and back sides of the utensil area. The use of multiple engagement extenders <NUM> allows not only for the non-congruent position to be achieved with the tray <NUM> aft of the rack <NUM> as shown in <FIG>, but it also allows for a non-congruent position to be achieved with the tray <NUM> forward of the rack <NUM>. This example may permit the tray <NUM> to extend outside of the tub while the rack <NUM> is still positioned within the tub.

<FIG> illustrates a perspective view of another example rack assembly <NUM>. In this example, the tray <NUM> may include the utensil area <NUM> being made up of a first portion <NUM> and a second portion <NUM>. Each portion <NUM>, <NUM> may be configured to hold utensils as described above, but the first portion <NUM> may have a depth greater than that of the second portion <NUM>. While two portions are illustrated, more than two portions each with varying depths, may be included. Having a utensil portion with varying depths may allow for the second rack <NUM> to hold items of varying heights without abutting or obstructing the tray <NUM> from below.

<FIG> illustrate side views of another example rack assembly <NUM> not forming part of the invention. This rack assembly <NUM> includes the tray <NUM> arranged above the second rack <NUM>. A support platform <NUM> may extend across the horizontal rods <NUM> (not visible in <FIG>) at the sides of the second rack <NUM>. Similar to the configurations above, the horizontal rods <NUM> and the vertical rods <NUM> may support the tray <NUM> arranged above the second rack <NUM>. The platform <NUM> may be a solid structure resting on and secured to the horizontal rods <NUM>. The platform <NUM> may be made of a plastic material.

At least one hinged support <NUM> may be arranged between the tray <NUM> and the second rack <NUM> at the platform <NUM>. The hinged supports <NUM> may connect the tray <NUM> to the second tray <NUM> and allow for movement of the tray <NUM> relative to the second tray <NUM> between a first elevated position and a second resting position. An example of the tray <NUM> in the elevated position is illustrated in <FIG>. In this example, the tray <NUM> is arranged above the platforms <NUM>, allowing for a greater clearance area at the second rack <NUM>. That is, when the tray <NUM> is in the elevated position, taller items may be placed in the second rack <NUM>. Additionally, the tray <NUM> may be elevated to allow easier access to the second rack <NUM> during loading.

<FIG> illustrates the tray <NUM> in the resting position along the platform <NUM>. In this position, the tray may rest on the platform <NUM>. While the raised platform <NUM> allows for access to the second rack <NUM>, the clearance or height relative to the second rack <NUM> is less than that if the tray <NUM> were in the elevated position. In the resting position, however, the tray <NUM> may have a greater clearance height from the top of the dishwasher tub <NUM>. Thus, the hinged supports <NUM> allow for a flexible and selectable configuration of the tray <NUM> and second rack <NUM>.

The hinged support <NUM> may include a stop <NUM> attached to the engagement area <NUM> of the tray <NUM>. The stop <NUM> may be in the form of a fulcrum and may be fixed to the engagement area <NUM> at its apex. The hinged support <NUM> may also include at least one shaft <NUM> extending between the tray <NUM> at a tray attachment point <NUM> and the platform <NUM> at a platform attachment point <NUM>. The shaft <NUM> may be radially fixed to each of the tray <NUM> and the platform <NUM> so that the shaft <NUM> may be radially movable at each fixed point. The tray <NUM> may hinge between the elevated position and the resting position via the shaft <NUM>.

In the resting position, as illustrated in <FIG>, the tray <NUM> may be arranged in a more forward position where the shaft <NUM> pivots forward relative to the platform <NUM>. In the elevated position, as illustrated in 5A, the shaft <NUM> may pivot backward and hold the tray <NUM> above the platform <NUM>. The tray attachment point <NUM> and the fulcrum apex may abut each other when the tray <NUM> is in the elevated position. The stop <NUM> may hold the shaft <NUM> in a fixed position and prevent the shaft <NUM> from continuing to rotate at the tray attachment point <NUM>. That is, the shaft <NUM> may rest against the stop <NUM>, securing the tray <NUM> in an elevated position.

As shown in the figures, a plurality of supports <NUM> may be arranged along the tray <NUM> and platform <NUM> of the second rack <NUM>. In practice, at least two hinged supports <NUM> may be included on each platform <NUM> of the second rack <NUM>; a support <NUM> being arranged at each end of the platform <NUM>.

Claim 1:
An automatic dishwashing device, comprising:
a tub (<NUM>) defining a hollow dishwashing cavity having a back, top, bottom, and two sides and is accessible via an access opening at a front of the cavity;
a rack (<NUM>, <NUM>) slidably disposed within the tub (<NUM>) and moveable in a longitudinal direction between a stored position within the tub (<NUM>) to an extended position where the rack (<NUM>, <NUM>) extends outside of the tub (<NUM>); and
a tray (<NUM>) slidably engaged with the rack (<NUM>, <NUM>) for sliding movement in the longitudinal direction,
characterized in that the tray (<NUM>) is configured to be retained within the tub (<NUM>) when the rack (<NUM>, <NUM>) is in the extended position.