U.S. patent application number 11/974339 was filed with the patent office on 2009-06-25 for methods of preparing food and a multi-compartment container and lid assembly for practicing the methods.
Invention is credited to Majorie Weir.
Application Number | 20090162506 11/974339 |
Document ID | / |
Family ID | 34739027 |
Filed Date | 2009-06-25 |
United States Patent
Application |
20090162506 |
Kind Code |
A1 |
Weir; Majorie |
June 25, 2009 |
Methods of preparing food and a multi-compartment container and lid
assembly for practicing the methods
Abstract
Methods of preparing food and a divided container system used in
the preparation. The container system has a master tray having an
interior portion and a peripheral top edge, at least one insertable
sub-tray positionable within the interior portion of the master
tray, in which each sub-tray includes a peripheral top edge and an
interior portion, and a lid for sealing both the master tray and
the at least one insertable sub-tray. There are means securing a
sub-tray in place within in the master tray.
Inventors: |
Weir; Majorie; (Afton,
MN) |
Correspondence
Address: |
Albert W. Davis Jr.
6037 W Robin Lane
Glendale
AZ
85310
US
|
Family ID: |
34739027 |
Appl. No.: |
11/974339 |
Filed: |
October 12, 2007 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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10741285 |
Dec 18, 2003 |
7326428 |
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11974339 |
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60434743 |
Dec 18, 2002 |
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Current U.S.
Class: |
426/396 ;
206/558 |
Current CPC
Class: |
A47J 47/10 20130101 |
Class at
Publication: |
426/396 ;
206/558 |
International
Class: |
B65D 77/20 20060101
B65D077/20; B65D 1/34 20060101 B65D001/34 |
Claims
1. A method of providing a portion of a meal from plural food
ingredients, comprising the steps of, providing a master tray
having sides forming a rim, providing a plurality of separate
sub-trays fitting within the master tray and having sides forming
rims, the sides of the sub-trays having dimensions, providing a lid
that seals the master tray and the sub-trays, the lid having means
that seal to the rim of the master tray and means that seal to rims
of the sub-trays, the means sealing to the rims of the sub-trays
being arranged in a rectangular grid having sides, the sides of the
grid having dimensions, the dimensions of the sides of the
sub-trays being multiples of the dimensions of the sides of the
grid of the means sealing to the sub-trays, the master tray and at
least some of the sub-trays having means securing the at least some
sub-trays in place in the master tray, providing food ingredients,
placing the food ingredients in the sub-trays, placing the
sub-trays within the master tray, placing the lid on the master
tray and the sub-trays within the master tray thereby sealing the
master tray and the sub-trays, placing the master tray within a
refrigerator, removing the master tray from the refrigerator,
removing the lid from the master tray and sub-trays, selecting
ingredients from the sub-trays and providing a meal portion from at
least some of the ingredients.
2. The method of claim 1 wherein, at least one sub-tray having an
individual lid for sealing the at least one sub-tray.
3. The method of claim 1 wherein, at least one of the plurality of
sub-trays has a different shape from at least one other of the
plurality of sub-trays.
4. A divided container system comprising: a master tray having an
interior portion and a peripheral top edge; at least one sub-tray
positionable within the interior portion of the master tray, in
which each sub-tray includes a peripheral top edge and an interior
portion; and a lid having means for sealing both the master tray
and the at least one sub-tray, the lid comprising an upper surface;
a lower surface; a plurality of sealing surfaces extending from the
lower surface of the lid, in which the sealing surfaces are
arranged to abut with the peripheral top edge of the at least one
sub-tray to thereby seal the interior portion of the at least one
sub-tray from the interior portion of the master tray; and a
peripheral sealing surface for sealably contacting with the
peripheral top edge of the master tray; in which at least one
sub-tray is held in place relative to at least one other sub-tray
or the interior portion of the master tray.
5. The container system of claim 4, in which the sealing surfaces
are arranged in a grid-like pattern.
6. The container system of claim 5, in which the grid-like pattern
of the sealing surfaces corresponds with the top peripheral edges
of at least one sub-tray.
7. The container system of claim 4, in which the sealing surfaces
comprise a compliant material for conforming to the top peripheral
edge of the at least one sub-tray.
8. The container system of claim 4, in which the at least one sub
tray comprises a plurality of sub-trays, in which the sealing
surfaces of the lid are arranged to abut with and seal the
peripheral edge of each of the plurality of sub trays.
9. The container system of claim 8, in which each of the plurality
of sub-trays is identical to each of the other sub-trays.
10. The container system of claim 8, in which at least one of the
plurality of sub-trays has a different shape from at least one
other of the plurality of sub-trays.
11. The container system of claim 4, in which at least one of the
upper and lower surfaces of the lid comprises a surface selected
from the group comprising a magnetic surface, a resealable surface,
a cushioned surface, a fabric surface and a structured connector
surface.
12. The container system of claim 4, in which at least one of the
sub trays further comprises a sub-tray lid.
13. The container system of claim 4, in which at least one of the
sub-trays is detachably connected to the interior portion of the
master tray.
14. The container system of claim 4, in which at least one of the
sub-trays is insertable into the interior portion of the master
tray.
15. The container system of claim 4, in which at least one of the
sub-trays is permanently attached to the interior portion of the
master tray.
16. The container system of claim 4, in which at least one of the
sub-trays has a bottom surface including a recessed area to hold
the at least one sub-tray in place.
17. The container system of claim 4, in which at least one sub-tray
further comprises an interlocking side wall.
18. The container system of claim 17, in which the sub-trays
interlock with each other.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims the benefit of pending U.S. patent
application Ser. No. 10/741,285 filed Dec. 18, 2003.
FIELD OF THE INVENTION
[0002] The present invention relates generally to a container for
holding at least one item, and more particularly, to a
compartmentalized container particularly adapted for storing
multiple items separated from each other within a single container
for storage and transportation thereof, such as fresh sandwich and
salad ingredients.
BACKGROUND OF THE INVENTION
[0003] Restaurants, typically of the take-out variety, such as
those involved mostly with sandwich and salad preparations, have
developed methods of storing ingredients required to prepare
sandwiches and salads to an individual order. Special tray
arrangements contain the precut ingredients, typically in large
quantities, readily available for use. Similarly, many supermarkets
have point-of-sale storage and display arrangements for volume
sales of such precut ingredients. A storage system for sandwich and
salad ingredients in the home would be highly desirable. The home
situation differs from that in a restaurant or supermarket. For
example, in a restaurant or supermarket, volume sales may require
frequent replenishment of ingredients, and food and health laws may
deter storage of ingredients from one day to the next. In the home,
such ingredients are need only at certain times, and the consumer
may want to retain ingredients for longer periods.
[0004] The home environment is one area in which it is desirable to
provide suitable sandwich and salad ingredient storage. For
instance, collecting individual sandwich and salad ingredients from
various parts of the refrigerator requires leaving the refrigerator
door open for an extended time while searching for the multiple
items. It would thus be desirable to provide a single storage unit
for containing the needed ingredients so that such a storage unit
containing multiple items can be withdrawn from the refrigerator at
a single time. A home storage system for a plurality of items, such
as sandwich or salad ingredients, may desirably be
compartmentalized to hold smaller quantities, maintain freshness
and meet the storage requirements of different ingredients. In
particular, it would be desirable to have a flexible system that
can accommodate multiple containers of various sizes. A
compartmentalized storage system should be easily stored in a home
refrigerator, be space-efficient, and have other desirable features
as described below.
SUMMARY OF THE INVENTION
[0005] In accordance with the present invention, a storage and
display compartmentalized tray system is provided to allow for
effective separation of ingredients included within a single tray,
such as would be particularly advantageous for strong flavored
ingredients (e.g., onions, peppers, olives, etc.) and for
ingredients having different storage requirements (e.g., juicy
tomatoes vs. moisture-sensitive lettuce). Such a tray system is
desirably designed and manufactured to retain ingredient freshness
and eye-appeal for extended time periods. In addition, the tray
system of the present invention advantageously provides for
convenient and safe transport of the ingredients without
refrigeration, such as for meals away from home or for outdoor
activities. The storage system includes optional features to aid in
maintaining the contents of the container at an acceptable low
temperature for an extended period.
[0006] The container is especially suitable for individual consumer
use, although it is also useful for more commercial applications.
The container includes a master tray with a selection of sub-trays
designed and adapted to nest adjacent to one another within the
master tray. Each sub-tray can retain a separate food item, such as
a sandwich or salad ingredient, for example. The sub-trays can have
various features to maintain separation and freshness according to
the requirements of each food item. Optimally, the sub-trays
together completely occupy the master tray. Less than complete
occupancy of the master tray is possible, according to the needs of
specific ingredients or specific occasions. A lid for the
compartmentalized container is preferably constructed and designed
so that the lid seals both the individual sub-trays and the master
tray.
[0007] In one aspect of this invention, a divided container system
is provided, comprising a master tray having an interior portion
and a peripheral top edge, at least one insertable sub-tray
positionable within the interior portion of the master tray, in
which each sub-tray includes a peripheral top edge and an interior
portion, and a lid for sealing both the master tray and any
insertable sub-trays. In this embodiment, the lid comprises an
upper surface, a lower surface, a plurality of sealing surfaces
extending from the lower surface of the lid that are arranged to
abut with the peripheral top edge of the at least one insertable
sub-tray to thereby seal the interior portion of the insertable
sub-trays from the interior portion of the master tray, and a
peripheral sealing surface for sealable contact with the peripheral
top edge of the master tray.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] The present invention will be further explained with
reference to the appended Figures, in which like structure is
referred to by like numerals throughout the several views, and in
which:
[0009] FIG. 1 is a top perspective view of a master tray of the
present invention, illustrating one possible array of various sized
sub-trays that substantially fill the master tray;
[0010] FIG. 2 is a front-end view of the exterior of a master tray,
showing a latch for retaining the lid and a label;
[0011] FIG. 3 is a cross-sectional exploded view of a master tray
of the type shown in FIG. 1, illustrating the interior portion
having two sub-trays, an individual lid for the left-hand sub-tray,
and an overall lid suspended in position to lower into sealing
arrangement with the master tray and sub-trays;
[0012] FIG. 4 is an enlarged detail of the view of FIG. 3, showing
a cut-away of a hollow interior of the overall lid containing a
freezable gel;
[0013] FIG. 5 is a perspective view of the tray system of FIG. 1
including a lid constructed for sealing engagement with both the
master tray and the individual sub-trays;
[0014] FIG. 6 is a perspective view of a support to elevate a
master tray above another surface;
[0015] FIG. 7 is a perspective view of a compartmentalized storage
system of the present invention inside a refrigerator;
[0016] FIG. 8 is a perspective view of a covered master tray with
hinged tabs for locking the lid onto the tray;
[0017] FIG. 9 is a perspective view of a master tray with an array
of sub-trays and a lid with a task-specific surface in position for
lowering into sealing engagement with both the master tray and the
individual sub-trays;
[0018] FIG. 10 is a perspective view of a one-piece construction of
sub-trays with a suspended lid;
[0019] FIG. 11 is a perspective view of a several individual
sub-trays as they can nest within one another, along with a
corresponding lid;
[0020] FIG. 12 is a top perspective view of another arrangement of
sub-trays within a master tray, in accordance with the present
invention;
[0021] FIG. 13 is a bottom perspective view of the arrangement of
sub-trays shown in FIG. 12 with the master tray removed, and
including a lid positioned relative to the sub-trays in the same
manner the lid could be positioned on the master tray of FIG. 12;
and
[0022] FIG. 14 is a perspective view of a tray system including a
master tray holding sub-trays and a lid covering the master tray
and sub-trays.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0023] Referring now to the Figures, in which the components are
labeled with like numerals throughout the several Figures, and
initially to FIGS. 1 and 5, one embodiment of a compartmentalized
tray system 10 of the present invention is illustrated. Tray system
10 generally includes a master tray 12, plural separate insertable
sub-trays 14, and a lid 16 (see FIG. 5), which may be completely
separable from the master tray 12, or may be connected to the
master tray 12 via a hinged connection, for example. In particular,
the master tray 12 preferably has dimensions that allow it to
accommodate individual insertable and removable sub-trays 14 of
various sizes. In addition, the sub-trays 14 are preferably sized
to be placed adjacent to each other within the master tray 12 to
"fill" the interior portion of the master tray 12 (i.e., to
maximize the amount of the internal volume of the container that is
occupied by sub-trays 14). For example, FIGS. 1 and 5 illustrate a
tray system 10 that includes nine sub-trays 14 of various sizes
that are selected and arranged to substantially fill the interior
portion of the master tray 12. However, it is contemplated that the
interior portion of the master tray 12 is only partially occupied
by sub-trays 14, as will be discussed in further detail below.
Further, FIG. 14 illustrates another embodiment of a tray system
10, with a variety of differently sized sub-trays being held
therein and a lid 16 positioned on top of the master tray 12.
[0024] The dimensions of the master tray 12 and sub-trays 14
relative to each other are preferably chosen to allow a selection
of sub-trays 14 to occupy the interior of the master tray 12
completely (or substantially completely), when desired. For one
example, a master tray 12 may have dimensions of 5y in length and
4y in width, where y represents one side of the smallest sub-tray
14 that would typically be used in a particular tray system.
Referring again to FIG. 5, the lid 16 shows such an arrangement,
with five grid sections in the direction of the length, and four
grid sections in the direction of the width. In this example, a
master tray 12 could accommodate sub-trays 14 whose individual
length and width dimensions are multiples of y. If, for instance y
is 7.62 cm (3 inches), the master tray 12 could have a width of
30.48 cm (12 inches) and a length of 38.10 cm (15 inches),
providing for sub-trays 14 having length and width dimensions that
are multiples of 7.62 cm (3 inches) in order to occupy the total
interior area of the master tray 12. The multiplier (i.e., y in the
above example) may be the same in both the length and width
dimensions to provide the maximum flexibility for arranging
sub-trays 14 within a master tray 12, since the sub-trays 14 can be
oriented in either direction. Alternatively, the multiplier in the
length dimension may be different than the multiplier in the width
dimension, which may require additional user manipulation and
positioning to optimally arrange sub-trays 14 within a master tray
12, since the sub-trays 14 may fit together better when oriented in
one particular way relative to the master tray 12.
[0025] As can be seen best in FIG. 3, the sub-trays 14 may be made
to be at least slightly smaller in at least one dimension than the
dimensions that would be needed to completely fill a master tray 12
with adjacent sub-trays. In this way, a small clearance space 13
can be provided between adjacent sub-trays 14 and/or between
sub-trays 14 and the side of the master tray 12 so that individual
sub-trays 14 may be inserted into and removed from the master tray
12 more easily than if no such clearance space is provided between
adjacent sub-trays 14. However, no clearance space or gap 13
necessarily needs to be provided between adjacent tray walls.
[0026] One example of a master tray 12 can be about 5.08 cm (2
inches) to about 10.16 cm (4 inches) deep, with sub-trays 14 of a
slightly smaller depth to allow for easier insertion and removal,
depending on the construction materials. It is understood that it
may be preferable in some situations for the depth of the sub-trays
14 to match or closely match the depth of the master tray 12 in
order to maximize the volume of materials that can be held within
each sub-tray 14 and to allow for easier sealing to a lid 16, as
will be described below. However, the sub-trays 14 may instead have
a depth that is slightly or substantially less than that of the
master tray 12, which would require a lid that has a recessed
portion to reach the upper surfaces of the sub-trays 14, as will
also be described in further detail below.
[0027] An assortment of differently sized and shaped sub-trays 14
can be made available to fit in various combinations within the
master tray 12. Thus, the master tray 12 can be adapted for use
with a small number of sub-trays 14 (e.g., two or even one sub-tray
positioned therein, where such sub-trays can be relatively large)
or a larger number of sub-trays 14 (e.g., twenty sub-trays
positioned therein, where such sub-trays are relatively small).
While an optimal arrangement of sub-trays 14 would fill the master
tray 12 completely, a less than optimal arrangement can be used,
and is contemplated as included within the scope of the present
invention. One example of such an arrangement is illustrated in
FIGS. 12 and 13, where various sub-trays 14 are positioned within a
master tray 12 with so that spaces or vacancies 15 remain between
some of the sub-trays 14. In an arrangement of this type, the
spaces 15 may simply be left empty, or items may be stored in the
spaces 15 while other items may be stored within the sub-trays 14.
For one example, food products may be held within the sub-trays 14
while napkins and utensils may be stored within a space 15 between
sub-trays 14.
[0028] As is shown best in FIG. 3, the sub-trays 14 may optionally
be provided with a recessed area 50 in each of their outside bottom
surfaces, and the bottom interior surface 52 of the master tray 12
may be provided with at least one corresponding raised surface or
protuberance 54. In this way, the recessed area 50 of a sub-tray 14
can nest or fit onto a raised surface 54 to "lock" or hold the
sub-tray 14 in place relative to the other sub-trays 14 and/or the
interior portion of the master tray 12. The gap or space shown
between the recessed area 50 and protuberance 54 is for
illustration purposes, where the actual space between the surfaces
may be larger or may be essentially eliminated, as when the
surfaces actually touch each other for a frictional fit.
Preferably, multiple raised surfaces 54 are provided across the
bottom surface 52 of the master tray 12 to accommodate multiple
sub-trays 14 for securing such sub-trays in place. It is further
preferred that when such multiple raised areas are provided, they
are designed in such a way that sub-trays 14 of various sizes can
fit onto the raised surfaces 54. This may be accomplished in a
variety of ways. For one example, a master tray 12 may be provided
with an array of raised surfaces 54 that are spaced from one
another in a pattern that can accommodate sub-trays 14 that have
one or more recessed areas that can fit over one or more of the
raised surfaces 54. Referring again to FIG. 12, for example, a
sub-tray 56 may have a recessed area that fits onto a single raised
surface, while a sub-tray 58 (which is approximately twice as wide
as the sub-tray 56) can have one recessed area that is large enough
to fit over two raised surfaces, or may have two recessed areas to
slide or fit over two adjacent raised surfaces.
[0029] While the recessed areas 50 and corresponding raised
surfaces 54 are illustrated as being relatively square or
rectangular in shape, it is understood that any mating shapes can
be used for these features, such as rectangular, circular,
elliptical, triangular, or the like. It is further understood that
recessed areas may instead be recessed into the bottom of the
master tray and that the bottom surface of the sub-trays may then
include corresponding protuberances. Further, the master trays and
sub-trays may instead include other types of features for holding
the sub-trays in place relative to a master tray in which it is
positioned, such as sub-trays with interlocking side walls or other
securing features, for example.
[0030] FIG. 3 is a cross-sectional view of a master tray 12 showing
the interior portion of the tray with two sub-trays 14 adjacent to
one another. As discussed above, a small gap 13 may optionally be
provided between sub-trays 14 for easier removal and insertion of
sub-trays 14. As seen in FIGS. 3 and 4, individual lids 18 may
optionally be provided for the sub-trays 14, in addition to an
overall lid 16 that is large enough to cover the entire master tray
12. In particular, FIGS. 3 and 4 each show a lid 16 suspended in
position to lower into sealing arrangement with a master tray 12
and two different arrays of sub-trays 14. More particularly, each
of these Figures illustrates an interior lid 18 for a sub-tray 14
of the left side of the corresponding master tray 12. Any of the
individual lids 18 and/or the overall lid 16 may have beveled edges
24 that preferably mate with corresponding beveled edges 25 on the
top surface of the sides of the master tray 12 and/or corresponding
beveled edges on the top surface of the sides of the individual
sub-trays 14. In this way, each lid 16, 18 is capable of being
partially or entirely positioned within the interior of its
respective master tray 12 or sub-tray 14. In other words, each lid
16, 18 may optionally be insertable within either a sub-tray 14 or
master tray 12 so that the top surface of the lid is flush with the
sides of the corresponding sub-tray or master tray. The master tray
12 and sub-trays 14 may each have individual sealing lids 16, 18
that snap-fit into place, or otherwise fasten onto the top of the
master tray 12 or the tops of the individual sub-trays 14,
respectively, as seen in FIGS. 3 through 5, 8 and 9. Individual
sealing lids 18 for each sub-tray 14, as in FIGS. 3 and 4, keep the
ingredients fresh and safe from excessive dehydration during
storage and before use, such as in the refrigerator.
[0031] Preferably, as seen for example in FIG. 5, the lid 16 of the
master tray 12 is provided with a pattern or grid of sealing
surfaces 28 sized to the openings of the array of sub-trays 14
nested within the master tray 12. In such an embodiment, the outer
perimeter of the lid 16 seals the outer perimeter of the master
tray 12 while the sealing surfaces 28 simultaneously contact and
seal the outer perimeter of each of the individual sub-trays 14
positioned within the master tray 12. FIG. 5 shows a lid 16 with an
array of sealing surfaces 28 to interfit with the rims of both the
master tray 12 and the sub-trays 14. The sealing surfaces 28 are
preferably arranged to have the capability of sealing any sub-tray
14 that may be contained within the corresponding master tray. In
this particular example, sealing surfaces 28 of the lid 16 arranged
to that they may interfit with or seal up to a maximum of twenty
sub-trays 14. However, these sealing surfaces 28 are also arranged
for sealing sub-trays that are sized to be multiples of each grid
square 29, where the larger sub-trays will contact only some of the
sealing surfaces 28 of adjacent plural grid squares 29. For
example, in the embodiment shown in FIG. 5, the sealing surfaces 28
within the lid 16 will contact the rims of the nine sub-trays 14,
so there will be some sealing surfaces 28 that will not be in
contact with a surface of a sub-tray 14.
[0032] The master tray 12 and sub-trays 14 may be made of synthetic
resin, with a smooth interior and rounded corners to facilitate
easy cleaning, and a sanded or pebbled exterior to facilitate
secure, non-slip gripping. In addition, the interior of the lid 16
of the master tray 12 or the opening of each contained sub-tray 14
may be formed with a soft synthetic resin or other material that
allows corresponding areas of the lid 16 of the master tray 12 and
sub-tray 14 openings fit and seal together smoothly. The sub-trays
14 may be made of thin synthetic resin material for disposal after
use, if desired, or may alternatively be made of a more durable
material for sub-tray reuse, if desired. The material from which
the planar surface of the lid 16 is made may be relatively
transparent to allow viewing of the contents of the sub-trays 14,
or may instead be relatively opaque, as desired. In one preferred
embodiment, the sealing surfaces 28 are made of a relatively soft
durometer material (e.g., 30 to 40), and may further be a closed
cell material that is preferably relatively stain resistant. In
addition, all materials of the tray system 10 are preferably
approved by the U.S. Food and Drug Administration (or similar
authorities) as "food safe" or "food grade" materials.
[0033] The seal between the sealing surfaces 28 and the top
peripheral edges of the sub-trays 14 may be established mainly
through pressure between these surfaces, which causes at least
slight deformation of the sealing surface material so that it
conforms to the top surface of the sub-trays 14. Alternatively, the
sealing surfaces 28 may be provided more in the form of a "channel"
that can be deformed at least slightly to accept the top edge of
corresponding sub-trays 14 to thereby seal the two surfaces to each
other. In another alternative, the top peripheral edges of the
sub-trays 14 may be provided with a relatively soft, deformable
material to seal against a lid, where such a lid could also include
corresponding sealing surfaces, or may be a relatively flat surface
against which the soft edges of the sub-trays can press for
sealing. In yet another alternative, the lid may have recessed
areas into which the sub-tray edges can be pressed to seal the
interior portion of the sub-trays from the interior of the master
tray in which it is inserted.
[0034] Predetermined gaps 31 along the length of the sealing
surfaces 28 may optionally be provided to allow airflow needed to
maintain the quality of certain ingredients. Minute air
perforations around the surfaces of either the sub-trays 14 or the
master tray 12 may also optionally be provided to allow for
additional airflow. Oxygen-absorbents within the master tray 12 may
also be provided to retard spoilage of oxygen-sensitive
ingredients.
[0035] FIG. 11 shows a nesting of identical sub-trays 14, which may
be disposable, with a suspended lid 18. As shown in FIG. 2, the
leading edge of the master tray 12 may have molded indents 36 to
facilitate grasping.
[0036] A particular master tray 12 can be sized to fit into a
portable cooler, or into a smaller refrigerator, such as the type
commonly found in a family room, hotel room, dormitory or the like,
as seen in FIG. 7. Optionally, as seen in FIG. 7, the
compartmentalized tray system 10 can hang from a refrigerator shelf
in order to keep the area beneath the tray system 10 free for
storing other refrigerator items. In this way, other items would
preferably not need to be moved before the user can remove the tray
system 10 from the refrigerator. The dimensions for the master tray
12 should allow easy insertion and withdrawal of the master tray 12
relative to the dimensions and door opening mechanism of a standard
sized refrigerator. The illustrative dimensions for a master tray
discussed above of 30.48 cm (12 inches) by 38.10 cm (15 inches) are
suitable for most standard sized home refrigerators. The width of
the tray is preferably somewhat smaller than a standard
refrigerator, thus allowing easy insertion and withdrawal of the
tray system 10 so that the refrigerator door does not provide an
obstacle. A refrigerator may have a specifically manufactured shelf
for the master tray 12, making the entire compartmentalized tray
system 10 space-efficient within the refrigerator and easy to
remove and use.
[0037] As is shown in FIG. 6, an optional support 38, which could
be adjustable, may be provided to elevate the master tray 12 above
a refrigerator shelf, or any other type of support member can
instead be used that can position the tray system 10 within a
refrigerator or other storage area in a desirable location. In this
example, bottles or other containers can easily fit beneath the
support 38, thereby providing for better utilization of vertical
refrigerator space. Further, as is seen in FIGS. 2 and 3, the
exterior bottom corners 26 of the master tray 12 may have gliders
34, for example, for easy insertion and removal of master tray 12
from a refrigerator shelf. Other types of gliders, rollers, or
other features that facilitate easier insertion and removal of the
master tray from a shelf or other storage area may be used in place
of such gliders or in addition to such gliders, as desired.
[0038] Alternatively, an attachment system may optionally be used
to suspend and fasten the master tray 12 relative to a shelf, such
as a refrigerator shelf. Such an attachment system can be an
integral part of the exterior surface of a lid 16 of a master tray
12 or may be an attachable and detachable feature. The attachment
system should accommodate various potential locations of the master
tray 12, such as for various refrigerator shelf designs. For
instance, some refrigerator shelves may be thin synthetic resin or
glass planar sheets, other shelves may have a narrow depending
front skirt, and other shelves may be a grid of parallel rods with
connecting rods generally at right angles to the parallel rods.
[0039] In one example, an attachment system can include a pair of
opposing members, such as top and bottom arms, and a plurality of
such attachments may be about the perimeter of the lid of a master
tray. Each top arm can generally narrow from a proximal to distal
end to allow easy insertion of the master tray 12 between bottles
or containers on the shelf from which the master tray 12 suspends.
Each bottom arm can fasten to the lid 16 of the master tray 12 and
may have a connection, which may be ratchetable or otherwise
moveable, to its respective top arm to allow changing the space
between the arms after the master tray 12 has been suspended from
the refrigerator shelf. Alternatively, the attachment may have a
ratcheting mechanism to adjust the space between the two arms, or
each arm can be manipulated independently of the other. In another
embodiment, the distal end of the bottom arm facing the shelf may
have resilient suction cups to assure stability and positioning of
the master tray 12. When removed from the refrigerator, the bottom
and top arms may collapse onto each other as opposing rails or legs
to support the inverted lid 16.
[0040] The tray system 10 may optionally be designed so that as the
master tray 12 slides forward from its refrigerator shelf space,
the lid 16 tilts and lifts. In such an embodiment, the lid 16 may
remain in place in the refrigerator until removed for cleaning or
for use of the covered master tray 12 outside of the
refrigerator.
[0041] Either surface of the lid of the master tray 12 can have a
feature suitable for specific tasks, such as a magnetic surface for
holding ferrous items; a smooth resealable or other mat for crafts;
a cushioned fabric surface for preventing items placed thereon from
sliding off the surface and/or into which sharp items such as pins
and needles may be inserted; a structured connector to accept
mating features, e.g., snaps, hook/pile fasteners and other
equivalents; or a cutting board surface 20, as shown in FIG. 8, for
example. When the master tray 12 is opened, the lid 16 may sit on
the attachment (described above for refrigerator storage),
collapsed as parallel rails supporting the cutting board 20. The
cutting board 20 surface may contain food-compatible iontophoretic
materials or bactericides to control bacterial growth. Any
task-specific surfaces can be integral with or removable from the
lid 16 of the master tray 12 (e.g., by snap-attachment).
[0042] The walls of master tray 12, or any of the sub-trays 14, or
tray lid 16 can be hollow to accommodate refreezable material such
as water or gel packs 22, as seen in FIGS. 4 and 9, to maintain
freshness of the packaged ingredients, when the storage system 10
is used to transport and serve contents without refrigeration, as a
lunch or picnic salad/sandwich bar. When the lid 16 has a cutting
board 20 surface, the refreezable gel packs 22 may be inserted into
the lid 16 from a side opening. The refreezable gel packs 22 can be
inserted while the cutting board 20 is removed from the master tray
12 and the removable cutting board 20 can seal the hollow lid 16.
The refreezable gel pack 22 may be permanently sealed within the
lid 16, so that the lid 16 can be frozen to transport perishable
items without refrigeration. Alternatively, the gel pack 22 may
instead be a material that can retain heat for keeping the contents
of the master tray relatively warm. Similar features apply to the
master tray 12 and/or any of the sub-trays 14 in analogous manner
as for tray lid 16.
[0043] The sub-trays 14 can be of thin synthetic resin film,
available in quantity, nested by size for storage, distribution and
disposal, as seen in FIG. 11. The synthetic resin film sub-trays 14
may have ethylene-absorbent or antibacterial material to retard
food spoilage and bacterial growth. The sub-trays 14, as in FIGS.
10 and 11, can have a covering sheath 40 (in place of the lid 18)
attached to the sub-tray 14 main body. The covering sheath 40 may
have a linear bead along the remainder of its periphery to engage a
mating depression near the mating inner sides of the free rim of
the sub-tray 14. Each sub-tray 14 may alternatively have a
wedge-fit lid 18, as in FIGS. 3, 4 and 9, that does not protrude
outside the sub-tray 14 rim and is essentially flush with the
sub-tray 14 rim. A wedge-fit lid 18 allows snug fitting of the
sub-trays 14 within the master tray 12, optimizing utilization of
the master tray 12 and avoiding debris accumulation between the
sub-trays 14.
[0044] Although the compartmentalized storage system 10 of this
invention is particularly suitable for home usage, a segmented tray
42, optionally disposable, as seen in FIG. 10, can also be used in
conjunction with restaurant or supermarket salad/sandwich bars.
Such a segmented tray 42 can typically be molded from a single
sheet of material, if desired. For example, a synthetic resin sheet
may be deformed to provide independent sections as an array of
segmented trays 42, seen in FIG. 10. A linear depression may be
along the top rim of each segmented tray 42. For sub-trays 14
adjacent to the master tray 12 outer rim, this linear depression
may be along the outer rim of the segmented tray 42. A lid 16 or
covering sheath 40 for the segmented tray 42 may have a linear bead
of the same dimensions as the top rims of the sub-trays 14. When
pressed onto the segmented tray 42, the lid 16 or covering sheath
40 can mate with the top rim depressions to seal each individual
sub-tray 14 and the entire segmented tray 42 array. In this
prepackaged form, the sandwich/salad ingredients may be easily
transported from the supermarket to the sandwich/salad master tray
12 in the consumer's refrigerator, eliminating possible cross
contamination of ingredients in adjacent sub-trays 14. In some
embodiments, such a disposable, segmented tray 42 would be a tray
within a tray, replacing the individual sub-trays 14. In other
embodiments, such a segmented tray 42 could be an independent
sandwich/salad bar ingredients container. As mentioned above, this
disposable, segmented tray 42 can be made to include food
preservatives, such as antibacterial agents and ethylene absorbent
agents. As a structural and functional equivalent for individual
sub-trays 14, disposable sub-trays 14 or segmented trays 42 may
each have covering sheath 40 as a replacement for the lid 18 for
each individual sub-tray 14.
[0045] In accordance with the present invention, the arrangement of
sealing surfaces 28 on a lid 16 are shown in the Figures as a
rectangular or square grid pattern, but the arrangement of sealing
surfaces may include other shapes, such as circular, triangular and
the like, with the understanding that better nesting of the
sub-trays with each other across the length and width of the master
tray will better utilize the interior space of the master tray for
holding items within the sub-trays being held therein.
[0046] Other features may be provided to the compartmentalized
storage system 10 to meet the needs of specific users or specific
situations. For example, as seen in FIG. 8, the lid 16 may be
lockable to the master tray 12. Hinged tabs 30 on the sides of the
master tray 12 can pivot upward to lock the lid 16 in position.
Alternatively, the master tray 12 can be locked with a combination
lock or a strap device with a lock to retain the lid 16. For
special diets, federal nutritional fact guidelines or other meal
planning, weights or exchange quantities can be imprinted on or
molded into the master tray 12, sub-trays 14 or the lids 16, 18. To
keep track of the number of servings or quantities used or to aid
proper nutrition, a counter, such as an abacus type counter, can be
provided and attached to a portion of the tray system 10. The
counter may be on a handle, a surface of the master tray 12, the
sub-trays 14, the lids 16, 18 or a molded tab, for example. Such
molded tabs can be of the type that appear on beverage cup lids,
which can be depressed when a portion is used, and then later
returned to its original shape. A dedicated space can optionally be
provided on the tray system 10 for food preparation utensils, such
as a grater, tongs, knife, or the like, or for a refillable pack of
antibacterial wipes, for example.
[0047] As shown in FIG. 2, a slot 32 in a surface of the master
tray 12 or sub-tray 14 may hold an insert, such as a metal insert
to retain magnet reminders, a pad of self-adhesive notes, or a
rewritable surface. The slot 32 may also retain a patient label, as
in a compartmentalized pill box, for home bound or assisted living
patients, to track when container refills are necessary, or to
retain a freshness expiration date.
[0048] Although one use for the compartmentalized tray system 10 of
this invention is for storage and transport of various food
ingredients, a variety of other uses are equally intended to be
within the scope of this invention. For one example, the tray
system 10 may be used for storage and transport of live bait and/or
similar fishing needs that should be stored separately but are
desirably transported together. For another example, medicines and
other health and beauty aids may be stored advantageously in this
storage system 10. This storage system 10 may also stock
collections of miniature electrical components, such as surface
mount resistors ("SMRs") and surface mount capacitors ("SMCs"),
readily available for use.
[0049] The present invention has now been described with reference
to several embodiments thereof. The entire disclosure of any patent
or patent application identified herein is hereby incorporated by
reference. The foregoing detailed description and examples have
been given for clarity of understanding only. No unnecessary
limitations are to be understood therefrom. It will be apparent to
those skilled in the art that many changes can be made in the
embodiments described without departing from the scope of the
invention. For example, the dimensions of the individual sub-trays,
segmented trays, master trays and various lids and the overall
dimensions of the storage system may be varied. Thus, the scope of
the present invention should not be limited to the structures
described herein, but only by the structures described by the
language of the claims and the equivalents of those structures.
* * * * *