U.S. patent application number 13/866258 was filed with the patent office on 2014-02-20 for case.
The applicant listed for this patent is DG INTERNATIONAL HOLDINGS LIMITED. Invention is credited to Jean-Philippe Henri Denat, Barnaby Bevan Edwards.
Application Number | 20140048370 13/866258 |
Document ID | / |
Family ID | 44147352 |
Filed Date | 2014-02-20 |
United States Patent
Application |
20140048370 |
Kind Code |
A1 |
Edwards; Barnaby Bevan ; et
al. |
February 20, 2014 |
CASE
Abstract
An expandable travelling case comprises a back panel, a flexible
jacket, and a tensioner. The case can be expanded by moving the
expansion arm to an expanded configuration. The expanded
configuration involves the tensioner bracing or pushing against the
flexible jacket in cooperation with the back panel of the case. The
tensioner is therefore compressed between the jacket and the back
panel in the expanded configuration. This provides a tension fit
for the flexible jacket. There is also provided a retention means
and suitable component to maintain the travelling case in an
expanded state.
Inventors: |
Edwards; Barnaby Bevan;
(London, GB) ; Denat; Jean-Philippe Henri;
(London, GB) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
DG INTERNATIONAL HOLDINGS LIMITED |
London |
|
GB |
|
|
Family ID: |
44147352 |
Appl. No.: |
13/866258 |
Filed: |
April 19, 2013 |
Current U.S.
Class: |
190/103 |
Current CPC
Class: |
A45C 7/0036 20130101;
A45C 7/0022 20130101 |
Class at
Publication: |
190/103 |
International
Class: |
A45C 7/00 20060101
A45C007/00 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 20, 2012 |
GB |
1210935.1 |
Claims
1. An expandable travelling case comprising: a back panel; a
flexible skirt or jacket; at least one tensioner connected to, or
in contact with, said flexible skirt or jacket; and one or more
retention means for the tensioner or tensioners, the retention
means comprising one or more of the following means: a buckle and
clip, lip and catch, webbed strap and cam buckle, or a tie, wherein
the case can be expanded by moving the tensioner to an expansion
configuration, the tensioner is a tensioning panel and when the
case is in its expanded configuration the tensioner exerts a force
on the flexible skirt or jacket in cooperation with the back panel
of the case to provide a tension fit for the flexible skirt or
jacket and the retention means retains the tensioner in the
expansion configuration.
2. An expandable travelling case according to claim 1, wherein the
expanded case can be collapsed to a store-away configuration by
moving the tensioner to a folded configuration, thereby slackening
tension in the skirt or jacket.
3. An expandable travelling case according to claim 2, wherein the
collapsed case further comprises the tensioner laying generally
parallel with respect to the back panel.
4. An expandable travelling case according to claim 1, wherein the
tensioner in the expanded configuration is in generally
out-of-plane relation with respect to the back panel.
5. An expandable travelling case according to claim 1, wherein the
case comprises two tensioners located on opposite sides of the
case.
6. An expandable travelling case according to claim 1, the
travelling case comprising a length, a width and a depth, and
wherein the at least one tensioner is configured for expanding the
depth of the case.
7. An expandable travelling case according to claim 1, wherein the
back panel has an internally concave shape in which one or more of
the tensioners can be folded when the case is collapsed.
8. An expandable travelling case according to claim 1, wherein the
one or more retention means comprises one or more respective
locking means.
9. An expandable travelling case according to claim 1, wherein each
tensioner is configured for folding inwardly with respect to the
back panel.
10. An expandable travelling case according to claim 1, wherein the
or each tensioner are located internally of an internal volume
defined by the case.
11. An expandable case according to claim 1, wherein the or each
tensioning panel, when in the tensioning condition, extends along a
side of the case.
12. An expandable case according to claim 1, the retention means
comprising a webbed strap and a cam buckle, wherein said cam buckle
is rigidly attached to said tensioning panel.
13. An expandable case according to claim 1, the retention means
comprising a webbed strap and a cam buckle, wherein said cam buckle
is pivotally attached to said tensioning panel.
14. An expandable case according to claim 1, the retention means
comprising a webbed strap and a cam buckle, wherein said cam buckle
is riveted to said tensioning panel.
15. An expandable case according to claim 1 wherein retention means
for opposing tensioning panels are disposed symmetrically on
opposite sides of said case.
16. An expandable case according to claim 15, the retention means
comprising a webbed strap and a cam buckle, wherein said webbed
strap cooperates with a webbed strap of a further retention means
on an opposite side of the case to provide a strap to restrain
clothes stored in said case.
17. An expandable case according to claim 1 comprising two opposed
reinforcement panels each extending across the width of the case on
opposing sides thereof, other than the side or sides having the
tensioning panel or panels, said reinforcement panels being
deployable for expanding those additional sides and for providing
side reinforcement for the case on those additional sides when the
case is expanded.
18. An expandable case according to claim 17, wherein both
reinforcement panels can be retracted or folded away when the case
is collapsed to a store-away configuration.
19. An expandable case according to claim 17, wherein at least one
of the reinforcement panels is able to be secured in its deployed
configuration by the or each tensioning panel when the case is
expanded.
20. An expandable case according to claim 1, the retention means
comprising a webbed strap and a cam buckle, wherein the cam buckle
comprises: a housing portion comprising first and second ends
suitable for receiving a webbed strap; and a locking member
pivotally attached to the housing portion above the first end,
comprising: a cam face disposed from the pivot point, the cam face
controlling the height of an access slot formed at the first end;
and a lever arm extending substantially perpendicularly from said
cam face, said lever arm being operable to rotate said locking
member, characterised in that the housing portion comprises a cross
member above the second end, the cross member aiding in controlling
the exit angle of the webbed strap.
Description
[0001] The present invention relates to a case. In particular, the
present invention relates to a travelling case, bag or suitcase
that is expandable, i.e. it can be expanded to carry larger
contents or additional contents, or to convert from a storage
condition to an in-use condition.
[0002] Priority is claimed from PCT/2012/050886, the whole content
of which is incorporated herein by way of reference.
[0003] Expandable travelling cases or bags are known in the prior
art. They allow a user to expand the case in one or more dimension
of the case for carrying his/her belongings, i.e. larger or
additional belongings compared to those that can be carried in the
case in an unexpanded configuration. Typical travelling items range
from clothes to laptops, and include other accessories of various
types.
[0004] Although expandable travelling cases nowadays are very
popular with consumers, disadvantages can still be identified in
the prior art.
[0005] Some expandable travelling cases simply use an additional
zipped pocket, section or compartment that can be unzipped and
unfolded when necessary. However, it is difficult to maintain the
maximum space that can be so gained, since the folded out pocket or
compartment can collapse on itself.
[0006] A large amount of additional items can be stored in these
pockets or compartments such that internal pressure is applied to
stretch the pockets/compartments to their maximum volume. However,
when fully loaded, these expandable cases can result in an
unpredictable shape or profile that is not only unsightly, but it
can also cause problems where the expanded cases need to fall
within predetermined maximum dimensions (this happens, for example,
when a case needs to be stored in overhead storage compartments in
airplanes), or during the handling of the case by automated luggage
handling equipment, such as at airports.
[0007] Other types of expandable cases are known from the prior
art. There are some which use complex or bulky expansion mechanisms
comprising the likes of expansion frames, levers or arms. Some of
these cases can obviate, at least partially, some of the problems
associated with foldable zipped compartments or pockets. However,
consumers may have to pay comparatively large premiums to purchase
expandable travelling cases equipped with such complicated
expansion devices.
[0008] It is also possible to find on the market relatively
inexpensive expandable cases, although these cases typically have
less robust or at least less practical expansion systems.
[0009] Certain consumers find expandable cases less aesthetically
attractive than equivalent non-expandable cases, due to the
presence of unsightly internal or external expansion features such
as zips or mechanical arms or the like.
[0010] A further problem arises with the prior art cases, and that
is that even in their collapsed state, the case is still of a
substantial size, whereby the degree of expansion is only, perhaps,
an increase in 25% of capacity, and, further, the storage of the
case, when not in use, is still highly space dependant.
[0011] Further still, much of the prior art attempting to alleviate
the above problems employs catches or retention mechanisms that
take up a large amount of space inside the case, even when
expanded, or are susceptible to opening unexpectedly due to
handling of the case. Additionally, standard components are
currently often ill-suited to solve the above problems, not being
designed for such uses.
[0012] It could therefore be desirable to mitigate or obviate at
least one of the above-discussed problems or disadvantages.
[0013] It could also be desirable to provide an expandable
travelling case which is more practical or simple to use compared
to the prior art.
[0014] It could also be desirable to provide an expandable
travelling case which is relatively inexpensive to produce, while
still being practical, reliable, simple and/or quick to expand.
[0015] It could also be desirable to provide components
specifically designed and suited for use within an expanding
case.
[0016] It could also be desirable to provide a new concept of
expandable travelling case, in which expansion is performed in an
alternative manner, or according to a different principle or
mechanical mechanism compared to the prior art.
[0017] According to the present invention, there is provided an
expandable travelling case comprising: a back panel; a flexible
skirt or jacket, at least one tensioner connected to, or in contact
with, said flexible skirt or jacket; one or more retention means
for the tensioner or tensioners, the retention means comprising one
or more of the following means: a buckle and clip, lip and catch,
webbed strap and cam buckle, or a tie, wherein the case can be
expanded by moving the tensioner to an expansion configuration, the
tensioner is a tensioning panel and when the case is in its
expanded configuration the tensioner exerts a force on the flexible
skirt or jacket in cooperation with the back panel of the case to
provide a tension fit for the flexible skirt or jacket.
[0018] By providing tensioning panels, and tension fitting the
flexible skirt or jacket over the outside of the tensioning panel,
the case can be given the appearance and handling characteristics
of a fully rigid case--preferably the skirt or jacket is tension
fitted in close conformance with the outside of the tensioning
panel.
[0019] The tensioner may be made out of a wide range of materials
but preferably one that is rigid and light weight, for example
polyethylene or a similar polymer. A honeycombed or corrugated
material is particularly suited since it is both rigid and
lightweight.
[0020] The connection or contact with the flexible skirt
facilitates deployment and folding (retraction) of the tensioner.
Preferably it is a pivotal connection. More preferably it is a
webbed hinge. Preferably the hinge has a sufficient length for even
load bearing, but not so large as to be restrictive when attempting
to fold the tensioner and flexible skirt or jacket in an unexpanded
state. It could thus have a length of between 60 and 90% of the
length or width of the case, depending respectively upon whether it
is extending along a length or width of the case.
[0021] The use of this expansion system allows very significant
capacity changes for the case--perhaps as much as fourfold the
capacity of the collapsed case, although typically the case will
not be used as a case when collapsed.
[0022] Further, the collapsed case is much less space dependant
during storage. The collapsed case can have an overall depth e.g.
down to 75 mm whereas for such a case the expanded case can have a
depth in excess of 200 mm, i.e. a greater than 2.times. depth
change.
[0023] Preferably, the expanded case can be collapsed to a
store-away configuration by moving the tensioner to a folded
configuration. The folded configuration can be characterised by the
tensioner laying generally parallel with respect to the back panel,
in order to reduce the height or depth, or other dimension, of the
case.
[0024] It is preferable that the tensioner(s) is (are) located
around the inside of the perimeter of the case, thus occupying
little of the available space inside the case when in the expanded
configuration. However, embodiments may equally include tensioners
not located around the perimeter.
[0025] As the capacity of the case is rarely of importance when in
a collapsed-for-stowage state, the tensioners preferably are
designed to fold such that they will be within the central space of
the case when in an unexpanded state. It is more desirable to
achieve a minimised overall external volume or depth when
collapsed.
[0026] Preferably, the tensioner in the expanded configuration is
in generally out-of-plane relation with respect to the back panel,
and preferably it is perpendicular thereto. This provides the
expansion of the case by increasing the depth. It is however
foreseen that other dimensions or indeed multiple dimensions of a
case could be subject to expansion according to this invention, i.e
the height or the width thereof.
[0027] Preferably, the case comprises two tensioners located on
opposite sides of the case. Such a design is desirable from a
structural view, allowing loads to be split between the tensioners.
Designs are not limited to two tensioners, and while even
numbers--allowing convenient load sharing within rectangular
cases--are preferable, any number of tensioners could be used
according to this invention.
[0028] Preferably, where two tensioners are present in the design,
the two tensioners are symmetrically positioned with respect to a
median plane of the travelling case. The median plane is preferably
located through the centreline of the case and is preferably
aligned with either the length or width dimension of the case. A
symmetric design not only allows tension forces to be shared more
evenly, but is also more aesthetically pleasing and straightforward
to manufacture.
[0029] In preferred embodiments of the invention, the flexible
skirt or jacket is made of a flexible fabric, such as a flexible
synthetic fabric or cloth.
[0030] In some embodiments, the flexible skirt or jacket is made of
an elastic or stretchable fabric or cloth that can recover its
original shape after it has been stretched out in the expanded
configuration. This is beneficial as it allows the case to maintain
a clean or uniform appearance even after it has been expanded and
collapsed a large number of times. It also makes storage of the
flexible skirt or jacket when in a collapsed state easier.
[0031] In preferred embodiments, the back panel is generally
rectangular, in order to give the expandable travelling case a
generally rectangular profile or projection, which is particularly
practical, common and popular among consumers.
[0032] Preferably, the back panel comprises a plastics sheet. The
plastics sheet can be a polyethylene sheet, which is light and yet
durable and resistant. Polyethylene is also a standard material
used for this part in the industry, thus it is easy to source and
manufacture in the required shape. It might alternatively be
aluminium or a polycarbonate. Other known materials used in the art
might likewise be used.
[0033] Preferably, the expandable case comprises a flexible jacket
rather than a skirt, wherein the back panel comprises a rigid
portion and the flexible jacket surrounds substantially all of the
case, and is arranged for a tight fit on at least the rigid portion
of the back panel.
[0034] Preferably, the flexible skirt or jacket is connected to an
edge of the back panel. It is desirable the connection and seal is
absolute, preventing the ingress of dirt or water.
[0035] Preferably, the travelling case comprises a length, a width
and a depth, and the tensioner(s) is (are) configured for expanding
the depth of the case.
[0036] In some embodiments, the back panel has an internally
concave shape, in which any tensioner can fold. The flexible skirt
or jacket could also be stored in the concave back panel in the
collapsed, unexpanded configuration of the case.
[0037] To provide stability to the case in the expanded
configuration, the back panel can be equipped with one or more
inner retention means to hold the back end(s) of the tensioner(s)
on the back panel while tension is applied by the tensioner(s) to
the flexible jacket. Preferably, the retention means comprise
locking means, so that the tensioner(s) can be locked, if required,
in the required position on the back panel.
[0038] Preferably each retention means comprises one or more
respective locking means. It is desired such locking means prevent
undesired release of the retention means and hence movement
resulting in collapse or retraction of the tensioner(s) during
transit.
[0039] A multitude of different locking means could perform such a
function including, but not limited to, a webbed strap and cam
buckle, a standard buckle and clip, a lip and catch or simply a
tie. It is desirable that the locking means take up as little
luggage space as possible, are robust and do not damage the luggage
with, for example, sharp edges.
[0040] Preferably, the flexible jacket surrounds or encapsulates a
rigid back panel, and is located substantially all around the
case.
[0041] Alternatively, the flexible jacket might be connected to a
rigid back panel in a different manner, along the perimeter or edge
of the rigid back panel.
[0042] The above two jacket (or skirt) arrangements provide for a
case comprising a rigid base portion (given by the rigid back
panel), and for a flexible or semi-rigid expandable portion
(flexible in the collapsed configuration, and semi-rigid in the
expanded configuration, where the jacket--or skirt--is under
tension).
[0043] The flexible skirt or jacket can surround substantially all
of the case, and can also be arranged as a tight fit on at least a
side of the back panel. This arrangement is especially advantageous
with a rigid back panel. As a skirt, however, it might not extend
around the sides of the case. It might instead be joined at an edge
to front and back panels. The joint may be with a zip to facilitate
opening of the case.
[0044] The skirt or jacket might have a zip provided elsewhere on
it--e.g. around the sides--usually 3 sides--of the case, also to
facilitate the opening of the case.
[0045] The travelling case can comprise a length, a width and a
depth, and the expansion mechanism may be configured for expanding
the depth of the case.
[0046] Preferably, each tensioner is configured for folding
inwardly with respect to the back panel. Preferably, the or each
tensioner are located internally of an internal volume defined by
the case.
[0047] The above results in a compact design whereby when empty,
the case can be collapsed or contracted by folding the tensioner(s)
in. When folded and retracted, the tensioner(s) is (are) located
entirely within the case, thus the unexpanded case is compact,
making it more easily stowed.
[0048] Preferably, the flexible skirt or jacket is configured to
fold on or over the back panel.
[0049] Preferably, the flexible skirt or jacket comprises fold
lines, to help with the folding of the skirt or jacket when the
case is re-configured in the store-away configuration.
[0050] Preferably the tensioning panel, once deployed into its
tensioning condition, supports the flexible skirt or jacket at the
sidewall of the case and defines the shape of that sidewall, save
for any region thereof accommodating a wheel housing.
[0051] Preferably, the or each tensioner is a tensioning panel. The
panels can be made of any suitable rigid or semi rigid material
capable of withstanding the required tensioning forces. Preferably,
a honeycomb structure is used for such panels.
[0052] Preferably, the or each tensioning panel extends along a
side of the case.
[0053] Preferably, each tensioning panel extends substantially over
the length of the case in the expanded or unexpanded configurations
of the case, and extends substantially over the depth of the case
in the expanded configuration of the case. This is a preferred
configuration because the encumbrance of the expansion system is
minimised, while the tensioning forces are conveniently
applied.
[0054] Preferably, two corresponding parts of a retention means are
mounted respectively one on the back panel and the other on one of
the tensioning panels.
[0055] As discussed above, suitable retention and locking means
include, but are not limited to, a buckle and clip and, a lip and
catch or a tie. The retention and locking means should avoid
unintentional release. Depending on the type of means chosen, such
a release could be triggered by pressure from the contents or due
to an external impact to the case. If possible, the means should
thus be robust to minimise this possibility.
[0056] Preferably, the retention means comprises a webbed strap and
a cam buckle. Such a system prevents unintentional release and is
compact, cheap and will not damage the case's contents with sharp
edges.
[0057] The cam buckle can be operated to allow relative movement
between itself and the webbed strap to facilitate the expansion or
collapse of the case. Then when the case is in use it can be
engaged with the strap to prevent relative sliding in the direction
that would correspond to the tensioning panel rotating into a
folded position.
[0058] The cam buckle can be manufactured out of a large number of
materials, the two most suitable types being metals such as steel
or aluminium and rigid plastics such as high density polyethylene
or fibre-reinforced plastics. Other suitable materials would be
apparent to one skilled in the art.
[0059] Preferably, the cam buckle is firmly, and preferably
rigidly, attached to said tensioning panel. Alternatively, the cam
buckle could be pivotally or slidably attached to the tensioning
panel.
[0060] The webbed strap can be attached to the back panel in a
position so as to engage with the cam buckle with minimal
transverse bending.
[0061] A number of fixings are suitable for these attachments.
Suitable fixing types include, but are not limited to, screws, glue
and rivets. Preferably the buckle is riveted to the tensioning
panel, as rivets provide a cheap yet robust solution.
[0062] Preferably, one or multiple retention means are disposed
symmetrically on opposing sides of the case. Each retention means
then has a corresponding retention means opposite it across a
median plane of the case.
[0063] Preferably, the webbed strap from one retention means
cooperates with the webbed strap of a second, preferably opposite,
retention means and thus the cooperating straps act to restrain
clothes stored in the case, much like traditional straps found
within prior art suitcases. The straps are thus not just luggage
straps, but also retention straps for the tensioning panels--thus
having a new dual function. Cooperation could be facilitated by a
number of means including, but not limited to, Velcro, buttons,
fasteners, buckles or a tie. Preferably, as with many prior art
designs, each of the two webbed straps comprises one of two
complementary parts of a buckle.
[0064] By providing the straps with a dual purpose: firstly as a
means to retain the tensioning panels in an extended state, and
secondly to provide a strap to restrain the contents of the case,
little additional weight is added to the suitcase by implementing
the present invention thereon.
[0065] In order for both strap features to be able to function
effectively, a degree of control over the exit angle from the cam
buckle of the webbed strap is desirable. For this reason, the strap
will be appropriately attached to the case relative to its
respective cam buckle so as to minimise transverse bending of the
strap by the cam buckle.
[0066] The only loss of space due to such a retention means over a
non-extendable case is that taken up by the cam buckle itself,
which is deminimis. It is preferably fixed to the tensioning panel,
so the space is at the sidewall, and usually towards the bottom of
the case, where some space is inevitably lost anyway by any wheel
or tow-handle mechanisms.
[0067] Preferably, two opposed reinforcement panels or strips
extend across the width of the case on opposing sides, said
reinforcement panels being deployable for reinforcement when the
case is expanded. This improves the strength of the case in its
expanded configuration.
[0068] Preferably, the reinforcement panels can be retracted or
folded away when the case is collapsed to a store-away
configuration.
[0069] Preferably, at least one of the reinforcement panels or
strips is locked into its deployed configuration by at least one of
the tensioning panels when the case is expanded. This avoids the
need of retention or locking means for the reinforcement
plates.
[0070] Preferably, a top cover is provided which can be operated by
a user to open and access the case, or to close the case and
prevent access thereto.
[0071] Preferably, the top cover is hingedly attached to the
flexible skirt or jacket.
[0072] Preferably, the cam buckle comprises: a housing portion
comprising first and second ends suitable for receiving a webbed
strap; and a retention member pivotally attached to the housing
portion above the first end, comprising: a cam face disposed from
the pivot point, the cam face controlling the height of an access
slot formed at the first end; and a lever arm extending
substantially perpendicularly from the cam face, the lever arm
being operable to rotate the retention member, characterised in
that the housing portion comprises a cross member above the second
end, the cross member aiding in controlling the exit angle of the
webbed strap.
[0073] By controlling the exit angle of the webbed strap, the
likelihood of accidental release of the lever arm due to use of the
webbed strap as a luggage strap within the suitcase is
minimised.
[0074] The cross member is preferably of a rectangular cross
section so as to provide an elongated, flat surface with which to
control the exit projection of the strap from the cam buckle.
Although a rectangular cross section is preferable, other suitable
cross sections may include among others: square, circular and
elliptical sections.
[0075] The cross member is preferably integral to the cam buckle
housing portion although is optionally separate and separable.
Preferably the cross member is made of the same material as the cam
buckle housing portion. Suitable materials include, but are not
limited to, aluminium and polyethylene.
[0076] Preferably the housing portion comprises a hole to allow
attachment of the cam buckle to a surface. The diameter of the hole
depends on the attachment method used, preferably the hole is sized
to accommodate a rivet. It may be rebated or countersunk to allow
the rivet to be recessed below the line of the strap as it passes
from the cam and under the cross member.
[0077] As such, the present invention preferably comprises an
expandable case with displaceable, wall-tensioning, sidewalls, and
having at least one cam buckle and webbing strap for securing the
sidewalls in a case expanding configuration. Preferably the case
and/or cam buckles are as described above.
[0078] Preferably the webbed strap is used in an expandable case as
both a tensioning panel retention means, and clothes restraining
means.
[0079] These and other features of the present invention will now
be described, purely by way of example, with reference to the
accompanying drawings in which:
[0080] FIG. 1 is a front perspective view of an expandable case
according to the present invention in an expanded state.
[0081] FIG. 2 is a rear perspective view of the inside of an
expandable case in an expanded state.
[0082] FIG. 3 is a rear perspective view of the inside of the
expandable case of FIG. 2 with the tensioning panels half way
lifted out of their expansion configuration.
[0083] FIG. 4 is a rear perspective view of the inside of the
expandable case of FIG. 2 with the tensioning panels in their
lifted configuration.
[0084] FIG. 5 is a rear perspective view of an expandable case in
an expanded state.
[0085] FIG. 6 is a rear perspective view of an expandable case in a
fully collapsed state.
[0086] FIG. 7 is a partial front perspective view of a
reinforcement panel in the case when the case is in its expanded
state.
[0087] FIG. 8 is a close up view of the reinforcement panel of FIG.
7.
[0088] FIG. 9 is a partial perspective view of a further embodiment
of the present invention, showing a cam buckle and webbed strap
retention means, in its locked state.
[0089] FIG. 10 is a further partial perspective view of the cam
buckle and webbed strap retention means of FIG. 9, in its locked
state.
[0090] FIG. 11 shows the inside of an expandable case according to
one potential embodiment of the present invention, illustrating
possible retention means numbers and positioning.
[0091] FIG. 12 is a perspective view of two cam buckles which are
preferably used with the present invention, one in an opened state
and the other in a locked state.
[0092] Certain aspects of the present invention will now be
described in further detail with reference to the figures.
[0093] FIG. 1 shows an expandable case 100 in a closed but expanded
state. Like most of the currently popular cases there is provided a
substantially rectangular case with top and side handles 110 and
130, and a telescopic handle 120, to allow the user to easily carry
or trundle the case 100 respectively. The illustrated telescopic
handle 120 is a standard handle used on such cases, with two
telescopic arms attached to a cross member handle portion.
[0094] The cover lid 140 is rigid and can be zipped around the case
100. The cover lid 140 preferably comprises a polyethylene
side-board structure 140a to help the panel hold its shape. In this
particular embodiment the cover lid 140 zips together with the
flexible skirt or jacket 150. The cover lid 140 is attached via a
pivoting hinge or material joint to the flexible skirt or jacket
150 on one side, while being attachable via a zip on the other
three, allowing it to rotate or lift between open and closed
positions, just like many currently popular cases.
[0095] In this embodiment the back panel 160 has raised side walls
160a which, when the case is in an unexpanded or retracted state,
house the tensioning panels 170 (see FIG. 2). These raised side
walls 160a preferably comprise polyethylene boards.
[0096] The flexible skirt or jacket 150 extends around the
perimeter of the case 100 and is at one end attached to the side
walls of the back panel 160a, while the other is attached to, or
engages with the cover lid 140 and tensioning panels 170. The
flexible skirt or jacket 150 is made of a flexible fabric, such as
a flexible synthetic fabric or cloth, and comprises fold lines
150a. The fold lines 150a allow the top, bottom and sides to fold
in an easy and space efficient manner when the case 100 is in its
unexpanded state.
[0097] FIG. 2 depicts a rear perspective view of the case 100 in
its expanded state with the cover lid 140 removed for clarity. This
view shows that, again like most current cases, this invention
houses two wheels 180 in the base of the back panel 160.
[0098] As can be seen, the arms of the telescopic handle 120
retract in to channels in the back panel 160 of the case, again
like most equivalent cases on the market today.
[0099] A tensioning panel 170 is located on either side of the case
100. In FIG. 2, the tensioning panels 170 are in their extended
state, locked in position by two retention means 190. The
tensioning panels 170 exert an upwards force on the flexible skirt
and jacket 150, and when locked in place by the two retention means
190, together form two rigid side walls of the case 100.
[0100] In the preferred embodiment the tensioning panels 170 are
made of a rigid polyethylene honeycomb structure.
[0101] The tensioning panels can be coated in a fabric on the
inside to give a more pleasing appearance, in line with most case
designs popular today.
[0102] The size of the tensioning panels 170 and corresponding
flexible skirt or jacket 150 determine the depth of the case 100
when expanded. In the present embodiment the height of the
tensioning panels 170 and hence depth of the expanded case 100 is
of the order of 200 mm. The largest dimension of the tensioning
panels 170 is, in this embodiment, substantially equal to the
length of the case, but slightly less than that length to allow
them to be stowed within the case.
[0103] Four retention means 190 are present in this specific
embodiment, two for each tensioning panel 170. The retention means
190 are presented in FIGS. 2-4 and 7 as being a lip and catch
mechanism although, as described above and subsequently, this is
not the preferred embodiment of the present invention due to their
bulk.
[0104] The retention means 190 depicted in FIGS. 2-4 and 7 comprise
two components, one 190b fixed to the back panel 160, and one 190a
attached to the tensioning panel 170. Upon extension of the
tensioning panels 170, the retention means component 190a located
on the tensioning panel 170 adjoins and locks with the component
190b located on the back panel 160, maintaining the tensioning
panels 170 in an extended state.
[0105] To retract the tensioning panels 170 the retention means 190
must first be disengaged. In this embodiment this is achieved by
compressing a small catch at the base of the retention means 190b
which then disengages with a corresponding lip of the retention
means 190a. This allows the component located on the tensioning
panel 190a and the tensioning panel itself 170, to rotate inwards
about its connection to the flexible skirt or jacket 150.
[0106] A pulling tab 195 is present on the top of the retention
means 190 as a handle to ease actuation during retraction.
[0107] Although not explicitly shown in FIG. 2, the connection 200
between the tensioning panels 170 and flexible skirt or jacket 150,
enables the rotation of the tensioning panels 170 and the collapse
of the flexible skirt or jacket 150 for allowing the adoption of
the stowage condition for the case--for this the tensioning panels
and a part of the flexible skirt is folded down towards the base
160 of the case.
[0108] FIG. 3 depicts the same embodiment as FIG. 2, but here the
tensioning panels 170 are in a half lifted state, half-way between
extended and fully folded for stowage. The two separate components
190a and 190b that form the retention means 190 are visible in an
uncoupled state. When the case 100 needs to be collapsed for
stowage the retention means 190 are disconnected allowing the two
tensioning panels 170 to rotate inwards with respect to the
flexible skirt or jacket 150 about the pivotal connection 200.
[0109] FIG. 4 shows the same embodiment as FIGS. 2 and 3 with the
tensioning panels 170 fully rotated upwardly from the base, but
prior to dropping them down into the case to collapse the case.
Once the tensioning panels 170 are fully rotated into a
substantially horizontal position, the flexible skirt or jacket 150
is able to fold up or collapse towards the back panel 160a as the
tensioning panels 170 are brought down towards the back panel
160.
[0110] Once fully collapsed, the tensioning panels 170 lie
substantially horizontally within the space defined by the back
panel 160 and side walls 160a.
[0111] FIG. 5 depicts an expandable case 100 according to the
present invention in an expanded state, and FIG. 6 depicts the same
expandable case 100 in an unexpanded/collapsed state. These figures
illustrate the extent of the change in volume of the case, from an
expanded to unexpanded state, although not all elements are drawn
to scale. See, for example, the wheel size compared to the length
and width of the case. Nevertheless, from the wall details,
especially the lines 260, it can be seen that in FIG. 6 the depth
of the contracted case 100 is mostly dependent on the height of the
back panel side walls 160a, rather than the height of that plus the
height of the extended sidewall provided by the additional width of
the tensioning panels, i.e. the extension part 270 shown in FIG. 5.
As shown in FIG. 5, when those tensioning panels are in place, the
sidewalls extend the full size of those panels, rather than just
the lower half thereof.
[0112] The position of the panels in the expanded configuration are
represented on one of the sides by the trace-line 280 in FIG. 5.
When the panels are folded away, however, the lower half is just
the flexible fabric, and as such is not hard-walled. Structural
rigidity to the case is thus then provided only by the lid 140 and
the base 160, with its curving v-ends 300.
[0113] In the present embodiment the depth of the collapsed case is
of the order of 75 mm. The flexible skirt or jacket 150 and two end
(top and bottom) reinforcement panels 210--present to increase the
rigidity of the expanded case 100--have been collapsed and are no
longer outwardly visible when the case 100 is in its unexpanded or
retracted state. Additionally, part of the cover lid 140, and in
particular the side-board structure 140a are located within the
area defined by the back panel side walls 160a, further decreasing
the case's volume when collapsed.
[0114] The lower reinforcement panel 210 is shown in more detail in
FIGS. 7 and 8. FIG. 7 illustrates the location of the reinforcement
panel 210 and its abutment with the tensioning panel 170 when in an
extended position. FIG. 8 is a close up view of FIG. 7, further
detailing the abutment. In this position the reinforcement panels
210 act to strengthen and increase the rigidity of the case
100.
[0115] Such reinforcement panels 210 can be made of numerous
materials including both plastics and metals. In the present
embodiment a polyethylene honeycomb board is used to provide
strength while minimising cost and weight.
[0116] Both reinforcement panels 210 are pivotally connected to the
back panel 160 along a lower edge 220, e.g. with a fabric hinge.
They may also be individually be two-part of otherwise collapsible
to allow them to be folded into the volume of the case. See, for
example, hinge line 280 in FIG. 5.
[0117] The reinforcement panels 210 are preferred to have a
restricted rotation so as to allow inwards rotation towards the
centre of the case 100, but when in an expanded state, as
illustrated in FIG. 2, the tensioning panels 170, should resist
further outward rotation. For that purpose, they can abut the inner
side of the reinforcement panels 210, thus preventing them from
rotating further and keeping them upright. The fabric coating can
also help to restrain them from outward displacement.
[0118] Once the tensioning panels 170 are rotated into their
uppermost folded position as shown in FIG. 4, the reinforcement
panels 210 are no longer blocked from rotating and are therefore
permitted to collapse inside the case towards the back panel
160.
[0119] The reinforcement panels 210 are not constrained to be a
specific size, and therefore their dimensions generally depend upon
other factors such as the height and width of the case 100 as a
whole. In the preferred embodiment the reinforcement panels 210
effectively define the depth of the case 100, and have a length
approximating the distance between the top of the back panel side
walls 160a and the zipped connection to the cover lid 140.
[0120] As stated above, a number of different retention means are
included within the scope of the present invention. FIGS. 9 and 10
depict the preferred embodiment.
[0121] The retention means comprises a housing portion 230a and
locking member 230b which together comprise a cam buckle 230, and a
webbed strap 240.
[0122] The cam buckle 230 is rigidly fixed to the lower end (that
which is in the vicinity of the back panel 160 when in an extended
position) of the tensioning panel 170. One end of a webbed strap
240 is attached to the back panel 160, the other end is passed
through the cam buckle 230 and is free. The cam buckle 230 is
oriented so that when engaged, it is biased against the webbed
strap 240 if the strap is moving in the direction towards the back
panel 160, through the cam buckle 230. It thus resists release with
its camming action.
[0123] The buckle also enables the user to disengage the cam buckle
230, as explained below.
[0124] With the buckle disengaged, or even when part engaged, the
user can rotate and extend the tensioning panel 170 from a
horizontal, folded position, into an extended position so the base
of the tensioning panel 170 and cam buckle 230 are against the back
panel 160, and the flexible skirt or jacket 150 is in tension. This
can be done by sliding the buckle along the strap towards the
base--i.e. against the camming direction of the cam. Then, the cam
buckle 230 can be firmly engaged with the webbed strap 240 by
depressing on the locking member 230b. This then prevents the base
of the tensioning panel 170 from moving away from the back panel
160 and moving to or towards, a horizontal, or non-tensioning,
position.
[0125] In order to collapse the case 100, the cam buckles 230 are
undone, using the locking members 230b--disengaging them by pushing
them outwardly away from the straps, thus allowing the webbed
straps 240 to slide relative to the cam buckles 230 and thus
allowing the tensioning panels 170 to rotate inwardly to their
folded or non-tensioning positions.
[0126] In the present embodiment the free end of the webbed strap
240 comprises one half of a two piece buckle 250. The other half of
the two piece buckle 250 can be attached to the end of a webbed
strap 240 of a retention means 230 located symmetrically opposite,
across the back panel 160, or all four straps can work together to
provide a crossed clothes strap arrangement.
[0127] The straps may have elasticated ends, or adjustable
two-piece buckles, to provide corresponding functionality to
conventional clothes straps as found in prior art suitcases,
although non elasticated parts, at least where the cam buckle
engages, is certainly preferred to ensure a secure retention of the
tensioning panels in their tensioning orientation relative to the
base.
[0128] Although an off-the-shelf cam buckle is illustrated in FIGS.
9 through 11, and such a buckle can work perfectly adequately for
retaining the tightness on the straps, FIG. 12 shows an
alternative, novel, cam buckle 240 according to the present
invention. The majority of the features of the housing portion 230a
and locking member 230b are similar to the standard forms used
within cam-buckle industry, and thus will not be described in
detail here. However, in this cam buckle, in the base of the
housing portion 230a is a hole 270 suitable for a screw, rivet or
other fixing. The hole 270 is used to locate and attach the cam
buckle 230 to the inside of the tensioning panel 170. Further,
there is provided a cross member 260 that comprises a
rectangular-section member connecting the two side walls of the
housing portion 230a. The cross member 260 is located above the end
opposite the locking member 230b pivot point, and defines a slot
suitable for a webbed strap 240 to slide through without
significant resistance.
[0129] The cross member 260 acts to guide the projection of the
webbed strap 240 extending from the cam buckle 230, up the sides of
the tensioning panels 170. This therefore aids the webbed strap 240
in being passed around the sides of the contents of the case in
order to be fastened above with the buckle 250. It also prevents
inadvertant release of the strap by holding it away from the
release flange 230b.
[0130] It will be appreciated that it is not intended to limit the
present invention to the above specific embodiments only. Many
variants will be readily apparent to one of ordinary skill in the
art without departing from the scope of the appended claims.
[0131] Further Statements of Invention:
[0132] 1 An expandable travelling case comprising: [0133] a back
panel; [0134] a flexible skirt or jacket; and [0135] at least one
tensioner connected to, or in contact with, said flexible skirt or
jacket, [0136] wherein the case can be expanded by moving the
tensioner to an expansion configuration, the tensioner is a
tensioning panel and when the case is in its expanded configuration
the tensioner exerts a force on the flexible skirt or jacket in
cooperation with the back panel of the case to provide a tension
fit for the flexible skirt or jacket.
[0137] 2 An expandable travelling case according to statement 1,
wherein the expanded case can be collapsed to a store-away
configuration by moving the tensioner to a folded configuration,
thereby slackening tension in the skirt or jacket.
[0138] 3 An expandable travelling case according to statement 2,
wherein the collapsed case further comprises the tensioner laying
generally parallel with respect to the back panel.
[0139] 4 An expandable travelling case according to any one of the
preceding statements, wherein the tensioner in the expanded
configuration is in generally out-of-plane relation with respect to
the back panel.
[0140] 5 An expandable travelling case according to any one of the
preceding statements, wherein the case comprises two tensioners
located on opposite sides of the case.
[0141] 6 An expandable travelling case according to statement 5,
wherein the two tensioners are symmetrically positioned with
respect to a median plane of the travelling case.
[0142] 7 An expandable travelling case according to any one of the
preceding statements, wherein the flexible skirt or jacket is made
of a fabric material.
[0143] 8 An expandable travelling case according to any one of the
preceding statements, having a flexible jacket rather than a skirt,
wherein the back panel comprises a rigid portion and the flexible
jacket surrounds substantially all of the case, and is arranged for
a tight fit on at least the rigid portion of the back panel.
[0144] 9 An expandable travelling case according to any one of
statements 1 to 7, wherein the flexible skirt or jacket is
connected to an edge of the back panel.
[0145] 10 An expandable travelling case according to any one of the
above statements, the travelling case comprising a length, a width
and a depth, and wherein the at least one tensioner is configured
for expanding the depth of the case.
[0146] 11 An expandable travelling case according to any one of the
preceding statements, wherein the back panel has an internally
concave shape in which one or more of the tensioners can be folded
when the case is collapsed.
[0147] 12 An expandable travelling case according to statement 1,
wherein the back panel comprises one or more inner retention means,
each retention means being configured for engagement with a
tensioner.
[0148] 13 An expandable travelling case according to statement 12,
wherein the one or more retention means comprises one or more
respective locking means.
[0149] 14 An expandable travelling case according to statement 12
or 13, wherein each tensioner is configured for folding inwardly
with respect to the back panel.
[0150] 15 An expandable travelling case according to any one of the
preceding statements, wherein the or each tensioner are located
internally of an internal volume defined by the case.
[0151] 16 An expandable travelling case according to any one of the
preceding statements, wherein the flexible skirt or jacket is
configured to fold on or over the back panel.
[0152] 17 An expandable travelling case according to any one of the
preceding statements, wherein the flexible skirt or jacket
comprises fold lines.
[0153] 18 An expandable case according to any one of the preceding
statements, wherein the tensioning panel, once deployed into its
tensioning condition, supports the flexible skirt or jacket at the
sidewall of the case and defines the shape of that sidewall, save
for any region thereof accommodating a wheel housing.
[0154] 19 An expandable case according to any one of the preceding
statements, wherein the or each tensioning panel, when in the
tensioning condition, extends along a side of the case.
[0155] 20 An expandable case according to statements 5, 10 and 19,
each tensioning panel extending substantially over the length of
the case in the expanded or unexpanded configurations of the case,
and extending substantially over the depth of the case in the
expanded configuration of the case.
[0156] 21 An expandable case according to statement 20, two mating
parts of a retention means being mounted thereon, one on the back
panel and the other on one of the tensioning panels.
[0157] 22 An expandable case according to any one of the preceding
statements comprising a retention means for the tensioning panel,
the retention means comprising a webbed strap and a cam buckle.
[0158] 23 An expandable case according to statement 22, wherein
said cam buckle is rigidly attached to said tensioning panel.
[0159] 24 An expandable case according to statement 22, wherein
said cam buckle is pivotally attached to said tensioning panel.
[0160] 25 An expandable case according to any of statements 22 to
24, wherein said cam buckle is riveted to said tensioning
panel.
[0161] 26 An expandable case according to any one of the preceding
statements wherein retention means for opposing tensioning panels
are disposed symmetrically on opposite sides of said case.
[0162] 27 An expandable case according to statement 26 when
dependent on statement 22, wherein said webbed strap cooperates
with a webbed strap of a further retention means on an opposite
side of the case to provide a strap to restrain clothes stored in
said case.
[0163] 28 An expandable case according to any one of the preceding
statements comprising two opposed reinforcement panels each
extending across the width of the case on opposing sides thereof,
other than the side or sides having the tensioning panel or panels,
said reinforcement panels being deployable for expanding those
additional sides and for providing side reinforcement for the case
on those additional sides when the case is expanded.
[0164] 29 An expandable case according to statement 28, wherein
both reinforcement panels can be retracted or folded away when the
case is collapsed to a store-away configuration.
[0165] 30 An expandable case according to statement 28 or statement
29, wherein at least one of the reinforcement panels is able to be
secured in its deployed configuration by the or each tensioning
panel when the case is expanded.
[0166] 31 An expandable case according to any one of the preceding
statements, further comprising a top cover which can be operated by
a user to open and access the inside of the case, or to close the
case to prevent access thereto.
[0167] 32 An expandable case according to statement 31, wherein the
top cover is hingedly attached to the flexible skirt or jacket.
[0168] 33 A cam buckle comprising: [0169] a housing portion
comprising first and second ends suitable for receiving a webbed
strap; and [0170] a locking member pivotally attached to the
housing portion above the first end, comprising: [0171] a cam face
disposed from the pivot point, the cam face controlling the height
of an access slot formed at the first end; and [0172] a lever arm
extending substantially perpendicularly from said cam face, said
lever arm being operable to rotate said locking member, [0173]
characterised in that the housing portion comprises a cross member
above the second end, the cross member aiding in controlling the
exit angle of the webbed strap.
[0174] 34 A cam buckle according to statement 33, wherein the
housing portion comprises a hole to allow attachment of said cam
buckle to a surface.
[0175] 35 An expandable case with displaceable, wall-tensioning,
sidewalls, and having at least one cam buckle and webbing strap for
securing the sidewalls in a case expanding configuration.
[0176] 36. The expandable case according to statement 35, wherein
the cam buckle is in accordance with statement 33 or statement
34.
[0177] 37. The expandable case of statement 35, the case being in
accordance with any one of statements 1 to 32.
[0178] 38 The use of a webbed strap in an expandable case according
to any one of statements 1 to 32 or 35 to 37, as both a tensioning
panel retention means, and a clothes restraining means.
* * * * *