Collapsible container

Information

  • Patent Grant
  • 6293418
  • Patent Number
    6,293,418
  • Date Filed
    Thursday, December 9, 1999
    25 years ago
  • Date Issued
    Tuesday, September 25, 2001
    23 years ago
Abstract
A collapsible container for storage and transport of produce or other goods is provided. In one embodiment, there is provided a five piece collapsible container with abase and four pivotable walls. Each of the four walls are outwardly collapsible to facilitate washing, and inwardly collapsible for compact storage. A latch mechanism is provided at each of the four points where two sidewalls abut each other providing a rigid assembled container. Attached to each latch mechanism is an actuating member with a grip. There is a latch mechanism on each side of each of two opposing sidewalls and latch actuators with grips that in close proximity to each other. The two grips allow the operator to disengage both latches integral with one side of the container with one hand. Similarly, when collapsing the container from assembled position, all four latches can be disengaged with each hand at respective pairs of grips. The latches are readily disengageable while providing a rigid assembled container.
Description




FIELD OF THE INVENTION




This invention relates to injection molded containers, and more particularly, to a collapsible container.




BACKGROUND OF THE INVENTION




Many transport and storage containers are known. Certain collapsible containers are used to transport goods such as produce and other perishables. Collapsible containers are commonly rectangular in shape with four sidewalls hinged to the base. More recent collapsible containers are injection molded plastic having sidewalls that collapse outwardly for cleaning and inwardly for storage. The sidewalls are latched in an assembled position and unlatched in a collapsed position.




A collapsable container is taught in WO Patent Application 99/32362. This container includes a base, two sidewalls, and two end walls. A pair of opposing sidewall edges and a pair of opposing end wall flanges are integral with the base and depend therefrom. The end walls are pivotablv attached to each wall flange and include defined comers at each side that abut the corresponding sidewalls. A pair of opposing sidewalls are pivotably attached to the sidewall edges. Each sidewall has a latch member at each lateral edge and each end wall has a pair of flanges with a latch receiver for capturing the latch member in the assembled position




Each latch member comprises a rigid, substantially parallelopiped body and a raised tooth at its distal end. The latch receiver includes an aperture to receive the latch member and a resiliently deformable latch hinge with a lip complementary to the raised tooth. The latch hinge has a resting position that locks the tooth and a flexed position to allow the latch member to pass through the aperture.




During assembly of the container from the collapsed position, each latch member is inserted in the corresponding aperture. As the latch member passes through the aperture, the raised tooth flexes the latch hinge upwards from the rest position, temporarily flexing the latch hinge into the flexed position. In the assembled position, the raised tooth is locked on the outside of the latch hinge as it returns to rest position. The lip of the latch hinge abuts the tooth to retain the latch member in the aperture. Users of the container will appreciate that the assembly can be somewhat awkward as each opposing end wall must be outwardly collapsed at a given angle greater than forty-five degrees to the end wall flange when the each sidewall is moved upright into the assembled position. Furthermore, both corresponding sidewalls must be held upright to latch one end wall into place.




Returning the container to the collapsed position from the assembled position, each latch hinge is moved to the flexed position, raising the lip of the latch hinge so it no longer abuts the tooth. Each latch hinge is flexed by depressing the latch hinge, typically with the thumb and forefinger of one hand, while forceably separating the corresponding sidewall with the other hand. The latch member and tooth can then be released from the latch receiver. Because of the configuration of the container, this procedure must be repeated for each latch receiver in order to release each latch member and finally collapse the container.




A second five piece collapsible container is manufactured by the Rehrig Pacific Company, 4011 East 26


th


Street, Los Angeles Calif. 90025. The latch member and latch receiver are geometrically different from the container in WO 99/32362 but are functionally similar. As a result, it still requires the same awkward procedure to collapse the container.




An example of a five piece container that is less awkward to collapse is produced by Wavin Plastics Limited. This container has sidewall edges that are joined in the comers, but unlike the collapsible container taught in WO 99/32362, can only be collapsed inwardly. There is also a latch member with a striker and a latch release member. The latch release member extends from the latch member to an activation point on the sidewall of the container. A second latch member is attached to the same sidewall. A second latch release member extends from the second latch member to a second activation point. The first and second activation points are in close proximity to each other so that both release members can be activated with one hand thereby releasing both associated latch members. Thus the container can be easily collapsed by actuating each of two sets of latch release members. Users of the container can appreciate that this latching mechanism and the assembled container is less rigid than the aforementioned collapsible containers. Further, because the container can only collapse inwardly, it is more difficult to clean.




SUMMARY OF THE INVENTION




It is an object of the present invention to provide a novel collapsible container that obviates or mitigates at least one of the disadvantages of the prior art.




In one aspect of the invention there is provided a collapsible container comprising a base, a pair of first opposing sidewalls pivotably attached to the base, and a pair of second opposing sidewalls pivotably attached to the base. The sidewalls have an assembled position, an outwardly collapsed position, and an inwardly collapsed position. A latch bar is attached to each end of each of the first opposing sidewalls and a latch member is attached to each end of the second opposing sidewalls. The latch member is biased to releasably capture a respective latch bar when the sidewalls are in the assembled position. A latch actuator is attached to each latch member and extends along a respective second sidewall to a grip. Each second sidewall has a pair of grips proximal to each other such that each pair of grips can be actuated with one hand to urge the latch member to release the latch bar.




A collapsible container for storage and transport of produce or other goods is provided. In one embodiment, there is provided a five piece collapsible container with a base and four pivotable walls. Each of the four walls are outwardly collapsible to facilitate washing, and inwardly collapsible for compact storage. A latch is provided at each of the four points where two sidewalls abut each other providing a rigid assembled container. Attached to each latch is an actuating member with a grip. The grips are paired to allow the operator to disengage both latches on one side of the container with one hand. Similarly, when collapsing the container from assembled position, all four latches can be disengaged with each hand at respective pairs of grips. The latches are readily disengageable and provide a rigid assembled container.











BRIEF DESCRIPTION OF THE DRAWINGS




The present invention will now be explained, by way of example only, with reference to certain embodiments and the attached Figures in which:





FIG. 1

is a perspective view of the collapsible container with the sidewalls in the assembled position;





FIG. 2

is a perspective view of the collapsible container with the sidewalls in the outwardly collapsed position;





FIG. 3

is a perspective view of the collapsible container with the sidewalls in the inwardly collapsed position;





FIG. 4

is a perspective view of the two opposing long sidewalls of the collapsible container;





FIG. 5

is a perspective view of the two opposing short sidewalls of the collapsible container;





FIG. 6

is a partial perspective view of the corner of the collapsible container with the sidewalls in assembled position;





FIG. 7

is an exploded view of the latch mechanism including a catch bar, latch member, and latch actuator;





FIG. 8

is a partial top sectional view of the collapsible container in assembled position showing the catch bar, latch member, and latch actuator;





FIG. 9

is a partial top sectional view of the collapsible container with the latch member disengaged from the latch bar;





FIG. 10

is a side view of an alternative embodiment of the collapsible container;





FIG. 11

is a partial perspective view of an alternative embodiment of the collapsible container;





FIG. 12

is a side view of the collapsible container in a first alternative embodiment of the latch member and latch actuator;





FIG. 13

is a partial perspective view of the interior of the container showing the hinged catch of the latch member engaged with the catch aperture in a first alternative embodiment of the latch member and latch actuator;





FIG. 14

is a partial perspective view of the interior of the container showing the hinged catch of the latch member engaged with the catch aperture in the first alternative embodiment of the latch member and latch actuator;





FIG. 15

is a partial perspective view of the latch actuator and latch member in the first alternative embodiment of the latch member and latch actuator;





FIG. 16

is a partial perspective view of the latch actuator and latch member in the first alternative embodiment of the latch member and latch actuator;





FIG. 17

is a partial perspective view of an alternative embodiment of the latch actuator in the first alternative embodiment of the latch member and latch actuator;





FIG. 18

is a partial perspective view of the latch actuator in the first alternative embodiment of the latch member and latch actuator;





FIG. 19

is a side view of the collapsible container in a second alternative embodiment of the latch member and latch actuator;





FIG. 20

is a perspective view of the side of the collapsible container in the second alternative embodiment of the latch member and latch actuator;





FIG. 21

is a partial sectional view of section A—A of Figure J showing the second alternative embodiment of the latch member and latch actuator;





FIG. 22

is a partial sectional view of section A—A of Figure J showing the second alternative embodiment of the latch member and latch actuator;





FIG. 23

is a side view of the collapsible container in a third alternative embodiment of the latch member and latch actuator;





FIG. 24

is a partial perspective view of the interior of the container showing the hinged catch of the latch member engaged with the catch aperture in the third alternative embodiment of the latch member and latch actuator;





FIG. 25

is a partial perspective view of the latch actuator and latch member in the third alternative embodiment of the latch member and latch actuator;





FIG. 26

is a partial perspective view of the latch actuator and latch member in the third alternative embodiment of the latch member and latch actuator;





FIG. 27

is a partial perspective view of one side of the container showing an alternative embodiment of the hinge posts;





FIG. 28

is a partial perspective view of one side of the base of the container showing an alternative embodiment of the hangers;





FIG. 29

is a partial perspective view of one side and the base of the container showing the alternative embodiment of the hinge posts and hangers, and





FIG. 30

is a perspective view of container


20


in the outwardly collapsed position in an alternative embodiment of the tab configuration.











DETAILED DESCRIPTION OF THE INVENTION




Referring to

FIGS. 1-3

, a collapsible container in accordance with an embodiment of the invention is indicated generally at


20


. Container


20


is preferably used to transport and/or store products such as produce and other perishables. In a present embodiment, container


20


is injection-molded polymer such as polypropylene but other materials and forming processes can be used. Container


20


comprises a base


24


and four sidewalls


28


,


32


,


36


, and


40


that are pivotally attached to base


24


. The pivotal attachment will be discussed in greater detail below. Sidewalls


28


,


32


,


36


, and


40


have three positions. In the assembled position, shown in

FIG. 1

, container


20


is used for transporting or storing product, whereby all four sidewalls


28


,


32


,


36


, and


40


are substantially normal to base


24


. In the outwardly collapsed position, shown in

FIG. 2

, sidewalls


28


,


32


,


36


, and


40


are pivoted away from each other, and are substantially co-planar with base


24


, thus exposing the interior of the container to facilitate washing. In the inwardly collapsed position shown in

FIG. 3

, sidewalls


8


,


32


,


36


, and


40


are pivoted toward each other and are substantially parallel to base


24


thus facilitating the storage and transport of container


20


when it is empty.




In the present embodiment, base


24


is substantially planar with a rectangular footprint


44


. Base


24


has two opposing short sides


48


and


52


and two opposing long sides


56


and


60


. Each of short sides


48


and


52


include a base flange


64


and


68


, respectively, projecting normally from footprint


44


. Each side of base flanges


64


and


68


has comer sections


72


,


76


,


80


and


84


. respectively, that are normal to footprint


44


and integral with base flanges


64


and


68


and long sides


56


and


60


. Each of base ranges


64


and


68


have hinge posts


92


along the edge


96


for pivotal attachment to sidewalls


28


and


32


, respectively. Long sides


56


and


60


have hinge posts


100


for pivotal attachment with sidewalls


36


,


40


respectively.




As best seen in

FIG. 4

, a plurality of u-channel shaped hangers


108


on long sidewalls


36


and


40


are complementary with hinge posts


100


and pivotally attachable thereto. Long sidewalls


36


,


40


are substantially rectangular and are defined by short sides


120


and long sides


124


. Hangers


108


are attached to a contacting edge


132


on long sidewalls


36


,


40


. Each long sidewall


36


,


40


has a free edge


136


opposite contacting edge


132


. Nearest to free edge


136


and centred on sidewall


36


,


40


is a handle


140


for grasping container


20


. Each long sidewall


36


,


40


has tabs


148


and a rigid latch bar


152


protruding from each short side


120


. Latch bar


152


is substantially rectangular with a catch aperture


153


substantially centred therein and an outwardly bevelled free end


154


.




As best seen in

FIG. 5

, a plurality of u-channel shaped hangers


104


on short sidewalls


28


and


32


are complementary with hinge posts


92


and pivotally attached thereto. Short sidewalls


28


and


32


are substantially rectangular and are defined by short sides


112


and long sides


116


. Hangers


104


are attached to a contacting edge


134


on short sidewalls


28


,


32


. Each short sidewall


28


,


32


has a free edge


138


opposing contacting edge


134


. Nearest to free edge


138


and centred on sidewall


28


,


32


is a handle


142


for grasping container


20


. At each short side


112


of short sidewalls


28


,


32


, is a wall flange


156


protruding substantially normal to sidewall


28


,


32


. Integral with each wall flange


156


, is a tab receiving aperture


160


and a latch member


164


.




As best seen in

FIGS. 6 and 7

, latch member


164


has a resiliently deformable catch


168


which is biased to capture latch bar


152


by engaging with aperture


153


when sidewalls


28


,


32


,


36


,


40


are in the assembled position. Extending from each catch


168


is a substantially rectangular catch lever


172


. The free end of catch lever


172


has a substantially rectangular aperture


176


for attachment to a latch actuator


180


. In a present embodiment, latch actuator


180


has a pair of outwardly-turned feet


184


that are spring-biased to engage the edges of aperture


176


so that feet


184


are retained therein. A pair of legs


188


extend, respectively, from each foot


184


and merge at a body portion


192


. A grip


196


is integrally formed into actuator


180


on the end of body


192


opposite feet


184


. In the present embodiment, grip


196


is substantially arcuate with a raised lip


200


for grasping. When attached to latch member


164


, actuator


180


is substantially co-planar with short sidewalls


28


,


32


so that grip


196


is positioned near wall handle


142


. It can thus be seen that each latch actuator


180


is proximal to a corresponding latch actuator


180


of a corresponding latch member


164


on a same one of sidewalls


28


,


32


. Thus latch members


164


respective to corresponding latch actuators


180


are simultaneously releasable and the respective sidewall


28


,


32


is moveable to one of the collapsed positions.




While

FIGS. 6 and 7

show the latch between sidewalls


32


and


40


, it will now be apparent that the latch between the other sidewalls are similarly arranged. In particular, each short sidewall


28


,


32


has two actuators


180


with grips


196


in close proximity to each other, resulting in a single point of actuation for the pair of latch members


180


on each short sidewall


28


,


32


.




Each latch member


164


has two positions: a resting position and a flexed position. Referring now to

FIG. 8

, container


20


is in the assembled position and latch member


164


is in the resting position. Catch lever


172


is substantially normal to actuator


180


and catch


168


is engaged with latch bar


152


. In the flexed position, shown in

FIG. 9

, catch lever


172


is at an obtuse angle in relation to actuator


180


so that catch


168


is disengaged from catch bar


152


. Latch member


164


is movable from the rest position to the flexed position by urging grip


196


towards handle


142


. Upon releasing grip


196


, latch member


164


is biased towards the resting position.




The assembly of container


20


will now be described with reference to the foregoing and the attached Figures. To assemble container


20


from the outwardly collapsed position shown in

FIG. 2

, long sidewalls


36


,


40


are pivoted so that they are substantially normal to base


24


. Short sidewalls


28


,


32


are pivoted so that catch


168


abuts latch bar


152


. Maintaining long sidewalls


36


,


40


substantially normal to base


24


. external force is applied on short walls


28


,


32


so that they are directed inwardly and towards each other. When force is applied on short walls


28


,


32


, latch member


164


is urged from the resting position to the flexed position as catch


168


slides along bevelled free end


154


. Latch member


164


returns to the rest position when catch


168


engages catch aperture


153


. As will now be apparent, when each of the four catches


168


engage its respective aperture


153


, each sidewall


28


,


32


,


36


,


40


is substantially perpendicular to base


24


and container


20


is assembled as shown in FIG.


1


.




The collapsing of container


20


will now be described with reference to the foregoing and the attached Figures. To collapse container


20


from the assembled position shown in

FIG. 1

to the outwardly collapsed position shown in

FIG. 2

, both grips


196


on each short side


28


,


32


are urged towards each other by the operator. Typically the operator will pinch each grip


196


using the thumb and forefinger of each hand. Referring now to

FIG. 9

, latch actuator


180


is moved in the direction of arrow A, thereby applying a force on catch lever


172


and urging latch member


164


into the flexed position. As corresponding latch actuators


180


on each sidewall


28


,


32


are pinched, they are urged inwardly and towards each other. At the same time, latch members


164


are urged outwardly, into the flexed position, thereby disengaging catches


168


from their respective catch apertures


153


. At this point, each sidewall


28


,


32


is pivoted outwardly so that it is substantially co-planar with base


24


, in the outwardly collapsed position. Finally, long sidewalls


36


,


40


are then pivoted away from each other into the outwardly collapsed position.




It will now be apparent that both catches


168


on one sidewall


28


,


32


can be disengaged from their respective catch apertures


153


with one hand by urging the respective grips


196


together with one hand. Further, both catches


168


on both sidewalls


28


,


32


can be disengaged from their respective catch apertures


153


by urging each set of grips


196


on each wall


28


,


32


together using one hand on each set of grips


196


. Therefore, each wall


28


,


32


can be collapsed with each hand and both walls


28


,


32


can be collapsed substantially simultaneously.




To collapse container


20


from the assembled position shown in

FIG. 1

to the inwardly collapsed position shown in

FIG. 3

, both grips


196


on each short side


28


,


32


are urged towards each other by the operator. Referring to

FIGS. 8 and 9

, latch actuator


180


is moved in the direction of arrow A, thereby applying a force on catch lever


172


and urging latch member


164


into flexed position. When both latch actuators


180


on one of sidewalls


28


,


32


are urged towards each other, both latch members


164


are urged into the flexed position, thereby disengaging both catches


168


from their respective catch apertures


153


. When both catches


168


on sidewall


28


are disengaged from their respective catch apertures


153


, sidewall


28


is pivoted so that it is at an obtuse angle with base


24


. Similarly, both latch actuators


180


on opposing sidewall


32


are urged towards each other disengaging both catches


168


from their respective catch apertures


153


and sidewall


32


is pivoted so that it is at an obtuse angle with base


24


. Long sidewalls


36


,


40


are then pivoted inwardly, toward each other, so they are substantially parallel with base


24


. Short sidewalls


28


,


32


are then pivoted inwardly, toward each other so they are substantially parallel with base


24


.




It will be understood by those of skill in the art that the configurations of container


20


can be varied, and that such variations are within the scope of the invention. Referring now to

FIGS. 10 and 11

an alternative latch actuator


180




a


is shown on short side


28


. As best seen in

FIG. 10

, grips


196


from the previous embodiment can be eliminated and merged into a flexible single grip


196




a


proximal to handle


142


. By urging single (grip


196




a


towards handle


142


each foot


184




a


is drawn inwardly, thus releasing latch members


164


respective to each foot.




Referring now to

FIGS. 12-18

, an alternative latch member


164




b


and latch actuator


180




b


are shown. As best seen in

FIG. 13

, the resiliently deformable catch


168


of the first embodiment is replaced with a hinged catch


168




b


. Each hinged catch


168




b


has a first position whereby catch


168




b


is engaged with its respective catch aperture


153




b


, best seen in FIG.


14


. Each hinged catch


168




b


has a second position whereby catch


168




b


is pivoted away from catch aperture


153




b


, thereby disengaging catch aperture


153




b


. In addition, latch actuator


180




b


includes a pair of arms


185




b


which are joined to body


192




b


and oriented towards grip


196




b


, best seen in

FIGS. 15-18

. Arms


185




b


are spring-biased, having resting position that urges hinged catch


168




b


into the first position engaging catch aperture


153




b


. Arms


185




b


also have a flexed position when grip


196




b


is urged towards handle


142


, which urges hinged catch


168




b


into the second position thus disengaging catch


168




b


from its respective catch aperture


153




b.






Referring now to

FIGS. 19-22

, a second alternative latch member


164




c


and latch actuator


180




c


are shown. As best seen in

FIG. 21

, similar to hinged catch


168




b


of the previous embodiment, each hinged catch


168




c


has a first position whereby catch


168




c


is engaged with its respective catch aperture


153




c


. As best seen in

FIG. 22

, each hinged catch


168




c


has a second position whereby catch


168




c


is pivoted away from catch aperture


153




c


, thereby disengaging catch aperture


153




c


. As best seen in

FIG. 19

, each latch actuator includes a pair of splayed feet


184




c


. Splayed feet


184




c


each grasp their respective latch member


164




c


. In addition, latch actuator


180




c


includes a pair of arms


185




c


which are joined to body


192




c


and oriented towards feet


184




c


. Arms


185




c


are spring-biased, having a resting position that urges hinged catch


168




c


into the first position engaging catch aperture


153




c


. Arms


185




c


also have a flexed position when grip


196




c


is urged towards handle


142


, which urges hinged catch


168




c


into the second position thus disengaging catch


168




c


from its respective catch aperture


153




c


. The present embodiment also includes a single grip


197




c


, which interconnects each grip


196




c


. By urging single grip


197




c


towards handle


142


, feet


184




c


are urged inwardly, and thus releasing latch members


164


respective to each foot.




Referring now to

FIGS. 23-26

, a third alternative latch member


164




d


and latch actuator


180




d


are shown. As best seen in

FIG. 24

, similar to hinged catch


168




b


of the previous embodiment, each hinged catch


168




d


has a first position whereby catch


168




d


is engaged with its respective catch aperture


153




d


. Each hinged catch


168




d


has a second position whereby catch


168




d


is pivoted away from catch aperture


153




d


, thereby disengaging catch aperture


153




d


. In addition, latch actuator


180




d


includes a pair of arms


185




d


which are joined to body


192




d


at both ends. Arms


185




d


are spring-biased, having a resting position that urges hinged catch


168




d


into the first position engaging catch aperture


153




d


. Arms


185




d


also have a flexed position when grip


196




d


is urged towards handle


142


, which urges hinged catch


168




d


into the second position thus disengaging catch


168




d


from its respective catch aperture


153




d


.




Referring now to

FIGS. 10

,


27


-


29


, an alternative hinge post


92




e


,


100




e


and hanger


104




e


,


108




e


arrangement is shown. As best seen in

FIG. 27

, hinge posts


92


,


100


from the first embodiment can be eliminated and replaced by L-shaped hinge posts


92




e


. As shown in

FIG. 10

, three L-shaped hinge posts


92




e


project from contacting edge


134


and are centred on sidewall


32


. A split-cap L-shaped hinge post


93




e


projects from contacting edge


134


, proximal to each short side


112


of sidewall


32


. It will now be understood by those of skill in the art that each sidewall


28


,


36


,


40


can have L-shaped hinge posts


92




e


and split-cap L-shaped hinge posts


93




e


in similar arrangement to sidewall


132


. Hangers


104


,


108


from the first embodiment are replaced by hangers


104




e


, as shown in FIG.


28


. Each L-shaped hinge post


92




e


is received by complementary hanger


104




e


for pivotal attachment of sidewalls


28


,


32


,


36


,


40


as best shown in FIG.


29


. Similarly, each split-cap L-shaped hinge post


93




e


is received by a complimentary hanger


105




e


. Split-cap L-shaped hinge posts


93




e


interlock with apertures


106




e


on hangers


105




e


. The removal of split-cap L-shaped hinge posts


93




e


from respective hangers


105




e


is difficult thereby making the detachment of sidewalls


28


,


32


,


36


,


40


from base


24


difficult.




Referring now to

FIG. 30

, tabs


148


from the first embodiment can be replaced by a first tab


148




f


and a second tab


149




f


. First tab


148




f


is tapered inwardly as shown in FIG.


30


. The tapered first tab


148




f


reduces interference between short sidewalls


28


,


32


and long sidewalls


36


,


40


when assembling container


20


. The tapered first tab


148




f


allows the operator to pivot sidewalls


28


,


32


,


36


,


40


substantially normal to base


24


in any order when assembling container


20


from the collapsed positions.




While the embodiments discussed herein are directed to particular implementations of the present invention, it will be apparent that the subsets and variations to these embodiments are within the scope of the invention. For example, the sidewalls can differ in length from above or all four sidewalls can be equal in length. Alternatively, the container can have a cover to protect the goods stored therein. Also. the container can have a plurality of apertures for ambient circulation. The hinge configuration may differ. The shape of the grips may be varied such as including an aperture for inserting one's finger or thumb for actuating. The shape of the latch actuator may be changed or the latch member configuration can differ. Also, the latch catch and aperture can have different configurations to achieve the same function.




The present invention provides a novel collapsible container for transport or storage of products such as produce or other perishables. In one embodiment, there is provided a five piece collapsible container with a base and four sides that can be collapsed outwardly to facilitate washing and inwardly for compact storage. The container has latches and actuating members with grips that allow the operator to disengage both respective latches on one side of the container with one hand from an actuation point on the side of the container. Similarly, when collapsing the container from assembled position, all four latches can be disengaged with one hand at each actuation point. The latches are readily disengageable while providing a rigid assembled container. By providing a single point of actuation, both latches on one sidewall can be substantially simultaneously disengaged and the sidewall collapsed with one hand. Similarly, with one hand on each opposing sidewall, all four latches can be simultaneously disengaged and the sidewalls moved into their collapsed positions with each hand at each respective actuation point. Also, the container is readily collapsed for washing and storage thereby allowing processing by the operator. Also, less effort can be required as the latches are easily engaged and disengaged with reduced strain on the hand.



Claims
  • 1. A collapsible container comprising:a base; a pair of first opposing sidewalls pivotably attached to said base; a pair of second opposing sidewalls pivotably attached to said base, said sidewalls having an assembled position, an outwardly collapsed position, and an inwardly collapsed position; a latch bar attached to each end of each of said first opposing sidewalls; a latch member attached to each end of said second opposing sidewalls, said latch member being biased to releasably capture a respective latch bar when said walls are in the assembled position; and a latch actuator attached to each said latch member and extending along a respective said second sidewall to a grip, each said second sidewall having a pair of said grips proximal to each other such that each pair of said (grips can be actuated with one hand to urge said latch member to release said latch bar.
  • 2. The container in claim 1 wherein said latch bar comprises a substantially rectangular, protruding bar and a catch aperture for engaging said latch member.
  • 3. The container in claim 2 wherein said latch member comprises a resiliently deformable catch to capture said latch bar with a substantially rectangular catch lever extending therefrom, said catch lever having an aperture for attachment to said latch actuator.
  • 4. The container in claim 3 wherein said latch actuator comprises:a pair of outwardly turned feet to engage the edges of said aperture so that said feet are retained therein; a pair of legs extending, respectively from each of said feet; a body portion at which said legs merge; and said grip integrally formed with said actuator for grasping with a finger or hand.
  • 5. The container in claim 4 wherein said grip is substantially semi-circular with a protruding semicircular lip for grasping with a finger.
  • 6. The container in claim 4 wherein said grip comprises an aperture for inserting a finger to grasp and actuate said latch member.
  • 7. The container in claim 2 wherein said latch member comprises: a resiliently deformable catch to capture said latch bar with a substantially rectangular catch lever extending therefrom, said catch lever having a pair of outwardly turned feet to engage said latch actuator.
  • 8. The container in claim 7 wherein said latch actuator comprises:a substantially rectangular body portion; with an aperture, the edges of said aperture to be engaged with said feet; and said grip integrally formed with said actuator, opposing said aperture, for grasping with a finger or hand.
  • 9. A latch for a collapsible container, said container having:a base; a pair of first opposing sidewalls pivotably attached to said base; a pair of second opposing sidewalls pivotably attached to said base, said sidewalls having an assembled position, an outwardly collapsed position and an inwardly collapsed position; said latch comprising: a latch bar attached to each end of said first pairs of opposing sidewalls; a latch member attached to each end of the other of said second opposing sidewalls for releasably capturing said latch bar; and a latch actuator attached to each said latch member and extending along a respective said second sidewall to an integrally formed grip, each said second sidewall having a pair of grips proximal to each other such that each pair of grips can be actuated with one hand to urge said latch member to release said latch bar.
  • 10. A collapsible container comprising;a base and two pairs of opposing sidewalls pivotably attached to said base, said sidewalls having an assembled position, an outwardly collapsed position, and an inwardly collapsed position, said sidewalls having latches that releasably lock said sidewalls in said assembled position; and a latch actuator respective to each latch, each latch actuator being proximal to a corresponding latch actuator on a same one of said sidewalls such that latches respective to corresponding actuators are simultaneously releasable by a single hand and said same sidewall is movable to one of said collapsed positions.
  • 11. The container in 10 wherein said latch comprises:a latch bar attached to each end of one of said pairs of opposing sidewalls; a latch member attached to each end of the other of said pairs of opposing sidewalls, for releasably capturing a respective latch bar when said sidewalls are in said assembled position.
  • 12. The container in claim 11 wherein said latch bar, comprises a substantially rectangular, protruding bar and a catch aperture for engaging said latch member.
  • 13. The container in claim 12 wherein said latch member comprises: a resiliently deformable catch to capture said latch bar with a substantially rectangular catch lever extending therefrom, said catch lever having a pair of outwardly turned feet to engage said Latch actuator.
  • 14. The container in claim 13 wherein said latch actuator comprises:a substantially rectangular body portion; with an aperture, the edges of said aperture to be engaged with said feet; and a grip integrally formed with said actuator, opposing said aperture, for grasping with a finger or hand.
  • 15. The container in claim 12 wherein said latch member comprises: a resiliently deformable catch to capture said latch bar with a substantially rectangular catch lever extending therefrom, said catch lever having an aperture for attachment to said latch actuator.
  • 16. The container in claim 15 wherein said latch actuator comprises:a pair of outwardly turned feet to engage the edges of said aperture so that said feet are retained therein; a pair of legs extending, respectively, from each of said feet; a body portion at which said legs merge; and a grip integrally formed with said actuator for grasping with a finger or hand.
  • 17. The container in claim 16 wherein said grip is substantially semi-circular with a protruding semi-circular lip for grasping with a finger.
  • 18. The container in claim 16 wherein said grip comprises an aperture for inserting a finger to grasp and actuate said latch member.
  • 19. A latch for a collapsible container, said container having:a base; a pair of first opposing sidewalls pivotably attached to said base; a pair of second opposing sidewalls pivotably attached to said base, said sidewalls having an assembled position, an outwardly collapsed position, and an inwardly collapsed position; said latch comprising: a latch bar attached to each end of said first pairs of opposing sidewalls; a latch member attached to each end of the other of said second opposing sidewalls for releasably capturing said latch bar; and a latch actuator attached to each said latch member and extending along a respective said second sidewall to an integrally formed grip, each said grip being actuatable simutaneously by a single hand to urge a pair of said latch members to release said latch bar.
  • 20. The container in claim 10, wherein the container further comprises a grip coupled to both the corresponding actuators such that the latches respective to the corresponding actuators are substantially simultaneously releasable by actuating the grip with a single hand.
  • 21. The container in claim 1, wherein the container further comprises a grip member attached to each of the grips proximal to each other such that the grip member can be actuated with one hand to substantially simultaneously urge each corresponding latch member to release each respective latch bar.
  • 22. A collapsible container comprising;a base; two pairs of opposed sidewalls pivotally attached to the base; at least one pair of latch mechanisms, each latch mechanism releasably engaging an adjacent pair of the sidewalls when the sidewalls are in an assembled position; and a latch actuator connected to the at least one pair of latch mechanisms, the latch actuator operable by a single hand to substantially simultaneously disengage the pair of latch mechanisms.
  • 23. The container in claim 22, wherein the sidewalls are pivotable between an assembled position and a collapsed position.
  • 24. The container in claim 23, wherein the latch mechanism comprises a first latch portion disposed on a first one of the adjacent pair of sidewalls and a second latch portion disposed on a second one of the adjacent pair of sidewalls, the second latch portion for releasably engaging the first latch portion when the sidewalls are in the assembled position.
  • 25. The container in claim 24, wherein the first latch portion comprises a substantially rectangular protruding bar and an aperture, the first latch portion extending from an end of the first one of the adjacent pair of sidewalls, for releasably engaging the second latch portion.
  • 26. The container in claim 25, wherein the second latch portion comprises a resiliently deformable catch to releasably engage the first latch portion, and a catch lever extending from the catch.
  • 27. The container in claim 26, wherein the latch actuator comprises a grip having a pair of flexible arms, each flexible arm extending from an end of the single grip and connected to an extending body portion, the extending body portion coupled to the catch lever.
  • 28. A collapsible container comprising;a base; first and second pairs of opposed sidewalls, each sidewall pivotally attached to the base and moveable between an assembled position and a collapsed position; a plurality of latch bars, each latch bar attached to an end of each of the first pair of opposed sidewalls; a plurality of latch members, each latch member attached to an end of each of the second pair of opposed sidewalls and operable to releasably engage a respective one of the latch bars when the sidewalls are in the assembled position; and a pair of grip members, each grip member coupled to a pair of the latch members on a corresponding one of the second pair of opposed sidewalls, the grip member operable by a single hand to substantially simultaneously urge the pair of latch members to release each respective latch bar.
  • 29. The container in claim 28, wherein the latch bar comprises a substantially rectangular protruding bar and an aperture for engaging with the latch member.
  • 30. The container in claim 29, wherein the latch member comprises a resiliently deformable catch for releasably engaging the latch bar, and a catch lever extending from the catch.
  • 31. The container in claim 30, wherein the grip member comprises a grip having a pair of flexible arms, each flexible arm extending from an end of the grip and connected to an extending body portion coupled to the catch lever.
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Number Name Date Kind
2799423 Kaye Jul 1957
4923079 Foy May 1990
5398834 Umiker Mar 1995
5515987 Jacques et al. May 1996
5699926 Jacques et al. Dec 1997
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5967356 Laarhoven et al. Oct 1999
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Foreign Referenced Citations (2)
Number Date Country
2175316 Oct 1997 CA
2201010 Sep 1998 CA