U.S. patent application number 11/435549 was filed with the patent office on 2006-11-23 for reversible lid storage container.
This patent application is currently assigned to Rubbermaid Incorporated. Invention is credited to Christopher Claypool, William F. Croft, Joseph Lutgen.
Application Number | 20060261065 11/435549 |
Document ID | / |
Family ID | 37447385 |
Filed Date | 2006-11-23 |
United States Patent
Application |
20060261065 |
Kind Code |
A1 |
Claypool; Christopher ; et
al. |
November 23, 2006 |
Reversible lid storage container
Abstract
A storage container has a base with a bottom panel and an
upstanding side wall extending generally upward from a perimeter of
the bottom panel. The side wall has a top end and a top opening is
generally circumscribed by the top end. A reversible lid has a lid
perimeter and a cover panel generally within the lid perimeter. The
cover panel has a first side and a second side. The reversible lid
can be installed on the base in two different selectable
orientations including a first orientation with the second cover
panel side facing the base and a second orientation with the first
cover panel side facing the base. A first seal is created between
the reversible lid and the base in the first orientation and a
second seal is created between the reversible lid and the base in
the second orientation. A first sealed storage space is formed
between the base and the reversible lid when in the first
orientation and a second sealed storage space is formed between the
base and the reversible lid when in the second orientation. The
first sealed storage space has a larger volume than a volume of the
second sealed storage space.
Inventors: |
Claypool; Christopher;
(Huntersville, NC) ; Croft; William F.;
(Mooresville, NC) ; Lutgen; Joseph; (Huntersville,
NC) |
Correspondence
Address: |
LEMPIA IP GROUP, LLC
223 WEST JACKSON BLVD.
SUITE 620
CHICAGO
IL
60606
US
|
Assignee: |
Rubbermaid Incorporated
Huntersville
NC
|
Family ID: |
37447385 |
Appl. No.: |
11/435549 |
Filed: |
May 17, 2006 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
60681823 |
May 17, 2005 |
|
|
|
Current U.S.
Class: |
220/212 ;
206/503; 220/380; 220/780; 220/793 |
Current CPC
Class: |
B65D 43/021 20130101;
B65D 2543/00518 20130101; B65D 2543/00296 20130101; B65D 2543/00842
20130101; B65D 2543/00351 20130101; B65D 25/282 20130101; B65D
2543/00092 20130101; B65D 2543/0074 20130101 |
Class at
Publication: |
220/212 ;
220/780; 220/793; 220/380; 206/503 |
International
Class: |
B65D 51/00 20060101
B65D051/00; B65D 21/00 20060101 B65D021/00; B65D 41/18 20060101
B65D041/18; B65D 43/03 20060101 B65D043/03 |
Claims
1. A storage container comprising: a base having a bottom panel, a
side wall extending generally upward from a perimeter of the bottom
panel and having a top end, a top opening defined within the side
wall near the top end, and a base seal structure carried near the
top opening on a part of the side wall; and a reversible lid having
a cover panel and a lid perimeter, the cover panel having a first
side and a second side, the reversible lid having first and second
lid seal structures carried near the lid perimeter, wherein the
first lid seal structure engages and forms a seal with the base
seal structure when the reversible lid is in a first orientation
with the second cover panel side facing the base, a first storage
space being formed above the bottom panel, within the side wall,
and beneath the second cover panel side when the lid is in the
first orientation, and wherein the second lid seal structure
engages and forms a seal with the base seal structure when the
reversible lid is in a second orientation with the first cover
panel side facing the base, a second storage space of a different
volume than the first storage space being formed above the bottom
panel, within the side wall, and beneath the first cover panel side
when the lid is in the second orientation.
2. A storage container according to claim 1, wherein the first
storage space has a larger volume than the second storage
space.
3. A storage container according to claim 1, wherein at least a
portion of the cover panel projects out of plane relative to a
reference plane near and parallel to the lid perimeter and in a
direction of the first cover panel surface such that the first
cover panel surface is generally convex and the second cover panel
surface is generally concave.
4. A storage container according to claim 1, wherein the reversible
lid has a circumferential rim that extends radially outward,
wherein a first surface of the rim bears against a top edge of the
base with the reversible lid in the first orientation, and wherein
a second surface of the rim bears against the top edge of the base
with the reversible lid in the second orientation.
5. A storage container according to claim 1, wherein the reversible
lid has a circumferential rim that extends radially outward from
the lid perimeter, wherein the first lid seal structure is on the
reversible lid on one side of the rim, and wherein the second lid
seal structure is on the reversible lid on the opposite side of the
rim.
6. A storage container according to claim 1, wherein the reversible
lid has an annular skirt depending from the lid perimeter, and
wherein the first and second lid seal structures are on an outward
facing exterior surface of the annular skirt.
7. A storage container according to claim 6, wherein each of the
first and second lid seal structures has an annular depression in
the exterior surface of the annular skirt, and wherein the lid seal
structure includes an annular rib that projects radially inward
from a surface of the base and that seats in a first one of the
depressions in the first orientation and that seats in a second one
of the depressions in the second orientation.
8. A storage container according to claim 7, wherein the reversible
lid has a circumferential rim that extends radially outward from
the annular skirt and that is positioned between the first and
second depressions.
9. A storage container according to claim 8, wherein one side of
the circumferential rim is drawn against a top edge of the base in
the first orientation and the other side of the rim is drawn
against a top edge of the base in the second orientation.
10. A storage container according to claim 1, wherein each of the
first and second lid seal structures has an annular depression in a
surface of the reversible lid, and wherein the lid seal structure
includes an annular rib that projects from a surface of the base
and that seats in a first one of the depressions in the first
orientation and that seats in a second one of the depressions in
the second orientation.
11. A storage container according to claim 1, wherein the first lid
seal structure and the base seal structure snap together when
engaged in the first orientation, and wherein the second lid seal
structure and the base seal structure snap together when engaged in
the second orientation.
12. A storage container according to claim 1, wherein the first lid
seal structure and the base seal structure create a double seal
arrangement between the reversible lid and the base in the first
orientation, and wherein the second lid seal structure and the base
seal structure create a double seal arrangement between the
reversible lid and the base in the second orientation.
13. A storage container according to claim 12, wherein the
reversible lid has an annular skirt depending from the lid
perimeter, wherein the reversible lid also has a circumferential
rim extending radially outward from the annular skirt, and wherein,
in each of the first and second orientations, a surface of the rim
bears against a top edge of the base to form one part of the double
seal structure and a surface of the annular skirt bears a seal
surface of the base to form a second part of the double seal
structure.
14. A reversible lid storage container comprising: a base having a
bottom panel, a side wall with a top end, and a top opening; a base
seal structure carried near the top opening on a part of the side
wall; a reversible lid having a lid perimeter; and first and second
lid seal structures carried near the lid perimeter, wherein the
first lid seal structure and the base seal structure form a snap
fit seal in a standard lid orientation creating a first storage
space in the storage container of a first volume, and wherein the
second lid seal structure and the base seal form a snap fit seal in
an inverted lid orientation creating a second storage space in the
storage container of a second volume, the first volume being
greater than the second volume.
15. A reversible lid storage container according to claim 14,
wherein the lid perimeter defines a lid plane and wherein a cover
panel of the lid bulges out of plane relative to the lid plane.
16. A reversible lid storage container according to claim 14,
wherein the first lid seal structure and the base seal structure
create a double seal arrangement between the reversible lid and the
base in the standard orientation, and wherein the second lid seal
structure and the base seal structure create a double seal
arrangement between the reversible lid and the base in the inverted
orientation.
17. A reversible lid storage container according to claim 14,
wherein the reversible lid has an annular skirt depending from the
lid perimeter, and wherein the first and second lid seal structures
are on a surface of the annular skirt
18. A reversible lid storage container according to claim 17,
wherein the reversible lid has a circumferential rim that extends
radially outward from the annular skirt and that is positioned
between parts of the first and second lid seal structures.
19. A reversible lid storage container according to claim 18,
wherein the rim bears interferingly against a top edge of the base
in each of the standard and the inverted lid orientations.
20. A storage container comprising: a base having a bottom panel,
an upstanding side wall extending generally upward from a perimeter
of the bottom panel and having a top end, and a top opening
generally circumscribed by the top end; a reversible lid having a
lid perimeter and a cover panel generally within the lid perimeter,
the cover panel having a first side and a second side, the
reversible lid configured to be installed on the base in a selected
one of a first orientation with the second cover panel side facing
the base and a second orientation with the first cover panel side
facing the base; a first seal created between the reversible lid
and the base in the first orientation and a second seal created
between the reversible lid and the base in the second orientation;
and a first sealed storage space between the base and the
reversible lid when in the first orientation and a second sealed
storage space between the base and the reversible lid when in the
second orientation, the first sealed storage space having a larger
volume than a volume of the second sealed storage space.
Description
RELATED APPLICATION DATA
[0001] This patent is related to and claims the priority benefit of
U.S. provisional patent application Ser. No. 60/681,823 entitled
"Reversible Lid Storage Container," which was file on May 17, 2006,
and the entire contents of which are incorporated herein by
reference.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Disclosure
[0003] The present disclosure is generally directed to storage
containers, and more particularly to storage containers with
reversible lids that can be secured to the bases of the containers
in two different orientations and yet create a seal between lid and
base.
[0004] 2. Description of Related Art
[0005] Storage containers are known to include a container base and
a lid. Many such storage containers are configured so that the lid
can be installed on and secured to the base to create an air tight
seal between lid and base. When installed, the lid seals contents
within a substantially airtight storage space of the container. A
typical storage container of this type has a lid that installs on
the container base in only one orientation to create the seal. Most
storage containers of this type include a lid with a cover surface
that lies in a plane generally parallel to and near a top of the
base. Some lids are known to have small surface variations in the
lid cover surface or panel for ornamental or structural
purposes.
[0006] Conventional food storage containers are typically
constructed as described above. Many of these types of containers
are used to store food. The volume of food to be stored may be in
excess of the storage volume of the base of a selected container.
If so, the user must select multiple storage containers, which
takes up significant storage space and dirties two containers.
Alternatively, the user must select a larger storage container.
This often results in the user necessarily choosing a container
that is much larger than needed to store the food. A significant
amount of excess air within the storage container may result
because the storage space is then only partially filled with the
stored food. Also, after a container is selected and used to store
food, a portion of the stored food is often taken out later and
eaten. The remaining amount of the stored food is then typically
left in the same storage container instead of being shifted to a
smaller container. This again results in the presence of even more
excess air within the partially filled storage space of the
container. The additional excess air can cause even faster
degradation of the stored food.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Objects, features, and advantages of the present invention
will become apparent upon reading the following description in
conjunction with the drawing figures, in which:
[0008] FIG. 1 shows an exploded perspective view of one example of
a storage container constructed in accordance with the teachings of
the present invention.
[0009] FIG. 2 shows a perspective view of the storage container of
FIG. 1 with the lid installed on the base in one orientation.
[0010] FIG. 3 shows a perspective view of the storage container of
FIG. 1 with the lid installed on the container base in an inverted
orientation.
[0011] FIG. 4 shows a side elevation of the storage container of
FIG. 2.
[0012] FIG. 5 shows a vertical cross-section taken along line V-V
of the storage container of FIG. 2.
[0013] FIG. 6 shows an enlarged view of a portion of the lid and
base seal structure taken from Circle VI in FIG. 5.
[0014] FIG. 7 shows a side elevation of the storage container of
FIG. 3.
[0015] FIG. 8 shows a vertical cross-section taken along line
VIII-VIII of the storage container of FIG. 3.
[0016] FIG. 9 shows an enlarged view of a portion of the lid and
base seal structure taken from Circle IX in FIG. 8.
[0017] FIG. 10 shows one example of a stacking arrangement of two
containers configured as shown in FIGS. 4 and 5.
[0018] FIG. 11 shows another example of a stacking arrangement of
two storage containers configured as shown in FIGS. 7 and 8.
[0019] FIGS. 12-14 show three additional examples of stacking
arrangements of two storage containers constructed in accordance
with the teachings of the present invention.
DETAILED DESCRIPTION OF THE DISCLOSURE
[0020] The disclosed storage container includes a base and a lid
that can be installed securely on the base in two different
orientations. In each of the orientations, the lid and base create
a seal to provide an air tight storage space within the storage
container. In one example, the lid is also configured so that when
it is installed on the base in one orientation, the storage space
is effectively larger than the storage space that results when the
lid is installed on the base in the other, inverted
orientation.
[0021] Turning now to the drawings, FIG. 1 shows one example of a
storage container 10 constructed in accordance with the teachings
of the present invention. The storage container 10 generally has a
container base 12 and a removable lid 14. In the disclosed example,
the base 12 and the lid 14 generally have round or circular
configurations. However, as will be evident to those having
ordinary skill in the art, the shape, configuration, size, and
various general contours of both the lid and base can vary
considerably and yet fall within the spirit and scope of the
present invention described herein.
[0022] The disclosed container base 12 has a bottom panel 16 and a
generally upstanding side wall 18 extending upward from a perimeter
of the bottom panel. As noted above, the perimeter of the bottom
panel 16 is generally circular in this example. The side wall 18 is
a generally circular cylinder in cross section, but has a varying
diameter that increases from a lower end 20 to an upper or top end
22 of the wall in this example. The side wall cylinder is thus
tapered, as the base diameter increases nearer the upper end 22 of
the side wall. A storage space 23 is defined within the confines of
the side wall 18 and above the bottom panel 16 of the container
base 12, and beneath the lid 14 when it is installed on the base. A
top opening 24 into the base interior is defined generally near the
upper end 22 of the side wall and provides access to the base
interior.
[0023] Also as generally depicted in FIG. 1, the disclosed
container base 12 has a pair of handles or handhold extensions 25.
The handles 25 extend radially outward from a portion of the base
12 near the upper end 22. Such handles 25 are well known to permit
a user to easily grasp and hold the storage container 10, as well
as to assist in removing the lid 14 from the base 12. The number,
size, shape, configuration, position, and construction of the
handles 25 can vary considerably and yet fall within the spirit and
scope of the present invention. Alternatively, the handles 25 can
be eliminated entirely.
[0024] Also as shown in FIG. 1, the lid 14 generally has a cover
panel 26 that, when installed on the base 12, completely covers or
closes off the top opening 24 of the base, partly defines the
storage space 23, and seals the storage space. The cover panel 26
of the disclosed lid 14 generally has a first or top side 28a, a
second or underside 28b, and a perimeter 30. The perimeter 30 in
this example is also circular to accommodate the corresponding
shape of the base 12. The terms top side and underside are use
herein relative to the lid cover panel to refer generally to the
standard lid orientation of FIGS. 2 and 4-6, and are used herein
merely for ease of description. These lid sides become reversed in
orientation when the lid is inverted, as described herein.
[0025] An annular rim 32 extends radially outward relative to the
lid perimeter 30, and in this example, is also circular in
configuration. A single tab 34 extends farther radially outward
from an outer edge or surface of the rim 32. Use of one or more
such tabs 34 is also well known for use in easily grasping and
raising one edge of the lid 14 for removal from the base 12. Again,
the size, contour, shape, position, construction, and configuration
of the tab or tabs 34, cover panel 26, and annular rim 32, if
present, can vary considerably and yet fall within the spirit and
scope of the present invention, as will be apparent to those having
ordinary skill in the art.
[0026] The disclosed cover panel 26 bulges or protrudes, i.e., is
distended, significantly upward and out of plane relative to a
plane of the rim 32 and with reference to the standard lid
orientation. In this example, the cover panel 26 is somewhat cone
shaped, but has a plurality of discrete steps 29. Thus, the
surfaces of the cover panel 26 are not smooth and gradual, but
instead are stepped, creating a plurality of circumferential,
progressively smaller diameter, stepped surfaces in the panel. The
plane of the annular rim 32 is used as a reference because, as
described below, the annular rim is positioned central to first and
second seal structure portions on the lid 14 in this example and
because the rim seats adjacent the top opening 24 of the base 12
when the lid is installed in either orientation.
[0027] The general nature of the disclosed storage container is
that the lid 14 can be installed on the base 12 in two different
orientations. A first or standard orientation is depicted in FIG. 2
and has the first or top side 28a facing upward and the second or
underside 28b facing down into the base 12. The lid can also be
installed in a second, inverted orientation as depicted in FIG. 3
with the second or underside 28b facing upward and the first or top
side 28a facing down into the base 12. The lid 14 and a portion of
the base 12 are configured to cooperate and form a secure seal
between adjacent surfaces of the lid and base in either lid
orientation.
[0028] We now describe one example of the seal means or structure;
which includes parts on both the lid and the base, and that yields
the disclosed reversible lid storage container. FIG. 4 shows a side
elevation of the storage container 10 with the lid 14 installed on
the base 12 in the first or standard orientation of FIG. 2. FIG. 5
shows a vertical cross-section through a center of the container 10
in FIGS. 2 and 4. As shown in these drawings, the storage space 23
is defined within the interior of the lid 14 and base 12, above the
bottom panel 16, below the cover panel 26, and within boundary of
the side wall 18. In this example, the storage space 23 is
effectively larger than a space defined only below the top opening
24 within the base 12. This is because the disclosed cover panel 26
bulges in a direction substantially out of plane relative to a
plane of the annular rim 32, as noted above.
[0029] As shown in FIGS. 5 and 6, each of the base 12 and the lid
14 include portions or parts of a sealing means or structure for
the storage container 10. These portions are configured and
arranged to cooperate with one another in order to create a seal
between the installed lid 14 and the base 12. The seal in this
example is generally formed near the perimeter 30 of the lid 14 and
near the upper end 22 of the side wall 18.
[0030] The perimeter 30 of the lid 14 in this example has an
annular wall or skirt 40 that extends around and depends from an
outer or perimeter edge of the cover panel 26. The vertical height
of the skirt 40 is sufficient to carry a number of structural
features of the seal means or structure, as described below. Also,
the annular rim 32 is positioned in this example at about
mid-height on the skirt 40 and extends radially outward from an
outer surface of the skirt. A first portion 42a of the skirt outer
surface is positioned below the rim 32 with reference to this lid
orientation, and is on the opposite side of the rim relative to the
bulging cover panel 26. A second portion 42b of the skirt outer
surface is positioned above the rim with reference to this lid
orientation on the side of the rim opposite the first outer skirt
surface portion 42a. The first and second skirt surface portions
42a and 42b each face generally radially outward in this storage
container example.
[0031] As shown in FIG. 5 and more clearly in the enlarged view of
FIG. 6, first and second lid ribs 44a, 44b extend circumferentially
around the skirt 40 and project radially outward from a respective
one of the skirt outer surface portions 42a, 42b. Each of the lid
ribs 44a and 44b is spaced a distance from the annular rim 32 on
its respective skirt outer surface portion 42a and 42b. The
position of the lid ribs 44a and 44b effectively creates first and
second circumferential lid depressions 46a, 46b on opposite sides
of and adjacent to the rim 32 and between the rim and a respective
one of the lid ribs 44a, 44b. The lid depressions 46a, 46b are thus
effectively recessed radially inwardly into the skirt outer surface
on opposite sides of the rim 32. In this lid orientation, the rim
32 has a first rim surface 48a facing downward adjacent the first
outer skirt surface portion 42a, and has a second rim surface 48b
facing upward adjacent the second skirt outer surface portion 42b.
The combination of each lid depression 46a, 46b and each lid rib
44a, 44b defines first and second lid seal structures on the
respective first and second skirt outer surface portions 42a, 42b,
with one seal structure on each side of the annular rim 32 on the
skirt 40. These lid seal structures and, in this example, the lid
annular rim 32 and rim surfaces 48a, 48b form part of the sealing
means or structure of the disclosed storage container 10.
[0032] The configuration of the lid perimeter including the skirt
42, rim 32, cover surface 26, and skirt inner and outer surfaces
also enhance structural rigidity of the lid 14 in this particular
example. However, as will be evident to those having ordinary skill
in the art, the specific configuration of the lid perimeter can
vary considerably and yet fall within the spirit and scope of
present invention. The discrete skirt, rim, and skirt and rim
surfaces may each be an optional structure. A part of the sealing
means or structure can alternatively be provided directly on an
interior or exterior portion of the cover surface 26 or on some
other alternative structure carried on, or formed as part of, the
lid.
[0033] As depicted in FIGS. 5 and 6, an annular wall 50 extends
generally upward relative to the upper end 22 of the side wall 18.
The annular wall 50 has an interior surface 51 facing radially
inward and extending around the circumference of the side wall 18
in this example. A radially outwardly extending step 52 is
positioned between and integrally blends the annular wall 50 and
the upper end 22 of the side wall 18 so that the interior surface
51 in this example is stepped outward from an inner surface of the
side wall. The interior surface 51 continues upward, then curves
radially outward to form a top edge 54 of the base 12. The base top
opening 24 is defined within the interior surface 51 near the top
edge 54.
[0034] A base rib 56 extends circumferentially around the base 12
and projects radially inward from the interior surface 51 of the
annular wall 50. The base rib 56 is spaced a distance upward and
away from the step 52, thus, effectively forming a base depression
58 between the step and the base rib. The base depression 58 is
effectively recessed radially outward into the interior surface 51
of the annular wall 50. In this example, the base depression 58
extends circumferentially around the base 12 and is positioned
adjacent the step 52 between the upper end 22 of the side wall and
the base rib 56. The annular wall 50 continues upward beyond the
base rib 56 into an annular flange 60 that extends radially outward
around the base 12. As noted above, the interior surface 51 of the
annular wall 50 continues into the top edge 54, which is the top
most surface of the flange 60. The flange 60 continues radially
outward and then curves downward into a depending lip 62. The lip
62 extends circumferentially around the base 12 and is spaced
outward from the outer surface of the annular wall 50 at the upper
end 22 of the side wall 18. The combination of the base rib 56 and
the base depression 58 of the annular wall 50 together define a
base seal structure in this example. This base seal structure and,
in this example, the top edge 54 of the base 12 form a part of the
seal means or structure of the disclosed storage container.
[0035] The configuration of the step 52, annular wall 50, lip 62,
and flange 60 also enhance structural rigidity of the base 12 in
this particular example. However, as will be evident to those
having ordinary skill in the art, the specific configuration of the
generally upper portion of the side wall 18 and the base 12 can
vary considerably and yet fall within the spirit and scope of
present invention. The discrete annular wall, the step, the lip,
and the flange may each be an optional structure. A part of the
sealing means or structure can alternatively be provided directly
on an interior or exterior surface of the side wall 18 or on some
other alternative structure carried on, or formed as part of, the
base. That structure need only be configured to mate with another
structure on the lid to form a seal with the lid installed on the
base.
[0036] As shown in FIGS. 5 and 6, the lid 14 can be installed on
the base 12 so that the lid and base seal structures positively
engage with one another to create a seal between the base and lid.
In one lid orientation shown in FIGS. 2 and 4-6, the lid cover
surface 26 bulges or projects upward away from a plane of the lid
annular rim 32 and of the top edge 54 of the base. The first lid
seal structure portions of the lid skirt 40, beneath the annular
rim 32 in this example, interlock and engage with the base seal
structure portions of the interior surface 51 of the base annular
wall 50. Specifically, the first lid rib 44a has a slightly larger
diameter across the lid than a diameter of the base rib 56 across
the base. Thus, the first lid rib 44a interferingly fits within and
snaps through the base rib 56. The first lid rib 44a then nests in
the base depression 58 of the interior surface 51 on the annular
wall 50. Similarly and simultaneously, the base rib 56
interferingly fits around and snaps over the first lid rib 44a and
nests within the first lid depression 46a of the skirt outer
surface just beneath the annular rim 32 of the lid. In this
installed lid orientation, the first rim surface 48a bears against
the top edge 54 of the base 12.
[0037] The distance between the lower edge of the base rib 56 and
the top edge 54 of the base 12, as well as between the first rim
surface 48a and the first lid rib 44a, can in this example be
sufficient to maintain a slight interference or pressure between
portions of the lid and base. Specifically, by designing and
controlling these dimensions, a generally vertical, positive
pressure component can be created between the first rim surface 48a
and base top edge 54 and also between the base rib 56 and first lid
rib 44a to create an air tight seal. Similarly, the slight diameter
difference between the inner most diameter of the base rib 56 and
the outer most diameter of the first lid rib 44a also can be
designed to create a generally horizontal, positive pressure
component to assist in maintaining the seal. Overall, these
structures create what is generally termed herein as a first
sealing structure, portions of which are partly provided on the
base and partly provided on the lid.
[0038] Turning now to the lid orientation shown in FIGS. 7-9, the
lid 14 can also be inverted and then installed on and positively
engage the base 12. In this example, the storage space 23 is
defined beneath the downwardly depending cover surface 26, above
the bottom 16, and within the boundary of the side wall 18 in the
base 12. The storage space 23 in this example is a smaller space
than in the previous lid orientation example created by the
downwardly protruding cover surface 26. FIG. 7 shows a side
elevation of the storage container 10 with the lid 14 in the
inverted orientation and FIG. 8 shows a vertical cross-section
through the container 10. FIG. 9 shows an enlarged portion of the
sealing means or structure in this orientation.
[0039] The lid 14 in this orientation seats or seals in
substantially the same manner as in the prior orientation, but with
the following differences. First, the previously upward facing
second rim surface 48b of the annular rim 32 now faces downward and
bears against the top edge 54 of the base 12. The second lid rib
44a positioned on the opposite side of the annular rim 32 in this
example interferingly fits and snaps within the base rib 56 and
nests in the base depression 58 of the annular wall interior
surface 51. Similarly and simultaneously, the rib 56 in this
example interferingly fits and snaps over the second lid rib 44b
and nests in the second lid depression 46b adjacent the annular rim
32. Again, the spacing between the surface 48b of the annular rim
32 and the second lid rib 44b, and the spacing between the base rib
56 and the top edge 54 can be such that a slight interference is
maintained between the annular rim and base top edge and between
the lid and base ribs. This interference again creates a generally
vertical surface pressure between the base and lid structures.
Also, the diameter difference between the inner most surface of the
base rib 56 and the outer most surface of the second lid rib 44b
again creates generally horizontal interference to form and retain
a seal when the inverted lid is installed as shown in FIGS.
7-9.
[0040] As will be evident to those having ordinary skill in the
art, the sealing means or structure between the lid and base can
vary and yet fall within the spirit and scope of the present
invention. For example, the lid in this example has an exterior
facing surface, which seats against an interior surface 50 of an
annular wall at the top of the side wall 18 of the base 12. In an
alternate example, an interior lid surface could seat against an
exterior surface of the base and yet otherwise have the same
structure as illustrated and described herein. In another
alternative example, the base surface, whether on an interior
annular or exterior annular surface can include a single
circumferential depression and the lid can include a pair of
circumferential projections or ribs whether on an exterior surface
or an interior surface of the lid, that nest in the depression, one
rib being provided for each lid orientation. In another alternative
example, the lid can include a surface, whether on an interior or
exterior portion of the lid, that includes a pair of
circumferential depressions and the base can include a single
circumferential rib, wherein the rib seats in one of the
depressions depending upon the lid orientation.
[0041] In the disclosed example, the storage container 10 can be
fabricated from a plastic or thermoplastic material such as
polypropylene, thermoplastic elastomer, polyethylene, or the like.
The container components can be injection molded, blow molded,
vacuum formed, thermoformed, or otherwise fabricated as desired.
Alternative materials can also be used to fabricate the base and/or
the lid, such as glass, metal, ceramic, or the like and yet fall
within the spirit and scope of the present invention. Similarly,
other alternative processes can be used, depending upon the
material utilized for a specific lid or base component.
[0042] The disclosed reversible lid storage container provides at
least two beneficial advantages for consumers. First, the storage
container may have a base of a particular storage volume. However,
the storage space can be increased rather substantially by
installing the lid on the base in the first orientation shown in
FIGS. 2 and 5-7. This is because the lid 14 has a cover surface 26
that has a non-planar configuration. In the disclosed example, the
cover surface 26 has a stepped conical configuration in a direction
substantially out of plane relative to a plane of the annular rim
32 of the lid 14. As will be evident to those having ordinary skill
in the art, the cover surface 26 need not be stepped or
particularly conical in shape, but rather can include other shapes
and contours such as domed, semi-spherical, or the like. If the
cover surface has a substantial portion that lies out of plane with
the perimeter of the lid that attaches to the container base, the
lid can function to effectively increase the storage space of the
container when installed in the first orientation.
[0043] A second beneficial advantage for the consumer is that if a
small amount of material, such as a food item, is stored in the
container, wherein that food volume is less than the volume of the
storage space within just the base, the lid can be installed on the
base in the second inverted orientation. In this orientation, the
cover surface 26 projects downward into the base and effectively
reduces the volume of the storage space. By doing so, the volume of
air within the storage space is also reduced. As is known to those
having ordinary skill in the art, air can negatively effect how
long food stored in the container will last. By reducing the amount
of excess air in the storage space, food contents stored in the
container may simply last longer.
[0044] The disclosed example of a reversible lid and the seal means
or structures can create a double seal arrangement. The ribs and
depressions create a first seal when the lid is installed on the
base in either orientation. The lid rim and the top edge of the
base can create a second seal using the geometry of the
interlocking structures as noted above. The rim can be drawn down
upon and into interference with the top edge of the base when the
lid is installed in either orientation to create the second
seal.
[0045] FIGS. 10-14 illustrate various different stacking
arrangements of which the disclosed containers are capable. FIG. 10
shows two containers 10 with the lid 14 attached to the base 12 of
each container in the standard orientation. The lid cover surface
26 and the bottom 16 of the base can be configured to register with
one another for stable stacking. FIG. 11 shows two containers 10
with the lid 14 attached to the base 12 of each container in the
inverted orientation. Again, the cover surface 26 of the lids 14
and the bottom 16 of the bases 12 can be configured so that the
containers can register with one another for stable stacking.
[0046] FIG. 12 shows two container bases 12 nested together, with
one lid 14 attached to the upper most base in the standard
orientation. The second lid 14 is stacked on top of the first lid.
FIG. 13 shows two container bases 12 nested together, with one
inverted lid 14 attached to the upper most base. A second inverted
lid is nested within the first lid. FIG. 14 shows two container
bases 12 nested together with one lid 14 attached in the standard
orientation to the upper most base. A second inverted lid is nested
under the bottom base of the stack. These and other stacking
configurations can be embodied in reversible lid containers
constructed in accordance with the teachings of the present
invention. The lid surfaces and the base bottoms can be configured
to cooperatively register and/or nest with one another for stacking
and storage.
[0047] Although certain storage containers have been described
herein in accordance with the teachings of the present disclosure,
the scope of coverage of this patent is not limited thereto. On the
contrary, this patent covers all embodiments of the teachings of
the disclosure that fairly fall within the scope of permissible
equivalents.
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