Receptacles – Sectional – Folding
Reexamination Certificate
2000-10-28
2003-10-14
Moy, Joseph M. (Department: 3727)
Receptacles
Sectional
Folding
Reexamination Certificate
active
06631822
ABSTRACT:
TECHNICAL FIELD
This invention relates to a collapsible container adaptable for the storing and transporting produce items and other goods.
BACKGROUND ART
Plastic containers and crates are commonly used today to transport and store a variety of items. When in use, such containers are typically rectangular in shape and have a base surrounded by four upstanding side panels. When not in use, many of the plastic containers employed by the produce and food industries have panels which are capable of folding both outwardly and inwardly. The folding feature, and particularly the inwardly folding feature, allows the containers to be folded or otherwise reduced in size for conserving storage space. In practicality, while the outwardly collapsing feature allows the container to generally have a lower profile than when in the inwardly folded position, the outwardly folding feature is underutilized, as the container with outwardly folded panels is often bulky, awkward to carry, and may not nest or stack easily with like folded containers.
Furthermore, folding containers are often formed of various components, including the side panels and the base, which are molded separately. In particular, the walls typically include strengthening ribs on their outer surfaces in order to provide strength and torsional resistance to the parts. However, during the molding process, the components having ribs may be subject to slight warpage and deformation during cooling, when plastic tends to shrink. The warping may particularly occur at the edges of the parts. Under these circumstances, the parts may have lower dimensional accuracy individually as well as with mating components, and may result in scrapped parts, and elevated manufacturing and part costs.
When assembled and in use, adjoining walls of some present containers are typically locked together by a latch mechanism, requiring additional user handling and manipulation of the latch in order to unlock and unfold the walls prior to storage. One such container and latch mechanism is disclosed in U.S. Pat. No. 6,015,086, which is assigned to the assignee of the present invention. While such locking latch mechanisms are sturdy and effective, the user in the field may not be able to apply the extra handling and manual disengagement necessary to release the latch and collapse the locked container. In fact, on some containers, it is sometimes necessary to use both hands to release the locking features.
In present containers, the side panels and base have adjoining hinge features, whereby the side panels are typically snapped into the base via an interference fit. This often requires strength and effort, and once snapped together the panels may be difficult to separate from the base, whereby separating the components may result in deformation of the parts.
Consequently, an improved container is desired which has walls which are relatively easy to latch and unlatch without excessive user handling and manipulation. The container, when in the assembled orientation, should also have the requisite strength properties capable of supporting the load and forced placed on these walls. The container and its components should also be resistant to warpage during the molding and cooling process. The container should provide for a relatively low profile when the walls are in the inwardly folded position. The components (particularly walls from base) should also be easily assembled and disassembled without deformation. The container should also allow for efficient wall movement and usage.
DISCLOSURE OF INVENTION
It is an object according to the present invention to provide a container which is relatively easy to latch and unlatch without excessive user handling of the latch mechanism.
It is another object according to the present invention to provide a container which is capable of supporting the forces and load placed on the container walls, particularly during handling and during the unlatching and latching of the container.
It is still another object according to the present invention to provide a container having components which are resistant to warpage during the cooling and/or curing phases of the molding process.
Still other objects according to the present invention are to provide a container that is relatively easy to collapse, which has a very low profile when in the collapsed orientation, and which is easily assembled and disassembled.
In keeping with the above objects and goals according to the present invention, provided is a collapsible container which includes a floor member having first and second pairs of opposed edges, and a first pair of opposing side walls each pivotably attached to the first pair of opposed edges of the base. Each of the first pair of opposing side walls has a pair of lateral edges and a latch member extending therefrom. Also included is a second pair of opposed side walls each pivotably attached to a corresponding one of the second pair of opposed edges of the base, each of the second pair of opposed side walls having a pair of opposed lateral flanges inwardly depending therefrom and formed integrally therewith, each lateral flange having an inner surface with a latch receiving portion formed therein. The latch receiving portion includes at least one clip member having a spring portion flexible between a first position and a second position for accepting the latch member, such that when the container is oriented in an assembled position, the at least one clip member receives a corresponding latch member, and wherein to move the container to an inwardly collapsed position from the assembled position, a force is exerted against an exterior surface of each of the first pair of opposed sidewalls. The force sufficient for the latch member to overcome the spring portion and be released from the at least one clip member. Preferably, when the container is oriented in the inwardly collapsed position, the first pair of opposing side walls are pivotably folded inward adjacent the base, and the second pair of opposing sidewalls are pivotably folded inward such that the first pair of opposed side walls is layered between the second pair of opposed side walls and the base.
In further keeping with the teachings and goals of the present invention, also provided is a collapsible container orientable between an assembled position and an inwardly collapsed position and includes a base member having a floor with a pair of opposed upstanding flanges integrally formed therewith, the upstanding flanges having an upper surface. Also included is a pair of first opposed walls which are pivotably mounted to the base, where each of the first opposed walls have side edges with at least one latch portion extending laterally therefrom, the latch portion including at least one latch member. Further included is a pair of second opposed side walls pivotably attached to a corresponding upstanding flange proximate the upper surface thereof, each of the pair of second opposed side walls having a pair of opposed, inwardly directed flanges having an inner surface with a latch receiving area formed therein, the latch receiving area defined by at least one latch acceptance member having a flexible portion for receiving a corresponding latch member therein in an interference fit when the container is oriented in the assembled position, and wherein to move the container to the collapsed position, a force sufficient to overcome the interference fit is applied to an exterior surface of each of the first opposed side walls. As disclosed, the base includes a periphery having a plurality of lower hinge members, each lower hinge member having a hook portion with a downwardly directed edge, and each of the pairs of first and second opposed sidewalls having a plurality of corresponding upper hinge members extending from a lower edge thereof. Each upper hinge member has a cam-shaped member for engaging the hook portion, such that as the container is moved from the inwardly collapsed position to the assembled position, the edge of the hook member limits the vertical movement of the c
Moy Joseph M.
Rehrig Pacific Company
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