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Locking stacking lug for stackable containers

a technology of stackable containers and locking lugs, which is applied in the field of stackable containers, can solve the problems of affecting the construction efficiency of containers, affecting the efficiency of palletizing and depalletizing, and affecting the efficiency of palletizing and depalletizing, and achieves the effect of facilitating efficiencies in both palletizing and depalletizing

Inactive Publication Date: 2006-04-06
US CAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005] When the pails are stacked, the locking lugs are received in the grooves to lock the pails together. The lugs and their associated grooves now prevent the pails from shifting with respect to each other. They also allow containers to be easily stacked in a proper alignment facilitating efficiencies in both the palletizing and de-palletizing of the containers.

Problems solved by technology

Typically, as more containers are stacked together, the stack becomes unwieldy and may topple over.
Even though containers may be designed to nest in a preferred way does not guarantee that they actually will be.
Rather, many prior art containers can still be stacked so that they do not properly align with each other, thereby defeating the purpose of their construction.
If the containers are not properly aligned in a stack, this causes stoppage of the machine and requires further manual labor to complete removal of the containers.

Method used

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  • Locking stacking lug for stackable containers
  • Locking stacking lug for stackable containers
  • Locking stacking lug for stackable containers

Examples

Experimental program
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second embodiment

[0026] Referring to FIGS. 8 and 9, the invention includes a container 100 having a circumferential rim 118 extends around the top of the pail. Container 100 has a pair of annular flanges 120, 122 extending outwardly of a container sidewall 116, a distance below the top of the container. Flange 120 comprises an upper flange on the container, and flange 122 a lower flange. Again the pail has a removable bail handle used for lifting and carrying the container. Respective ears 126 (only one of which is shown in the drawings) are formed opposite sides of the container, project outwardly from the side of the container, and extend vertically between the upper and lower flanges. Each tab 126 includes an opening 28 for receiving and securing an end of the handle.

[0027] A locking means for stacking containers 100 includes a pair of notches 130 formed on the outer margin of lip 118 on opposite sides of the container. A mating pair of locking lugs 132 is formed on lower flange 122 of the contai...

third embodiment

[0029] Referring to FIGS. 10 and 11, the invention comprises a container 200 having a circumferential rim 218 extends around the top of the pail and an annular flange 220 extending outwardly of a container sidewall 216, a distance below the top of the container. Again the pail has a removable bail handle used for lifting and carrying the container. Respective ears 226 (only one of which is shown in the drawings) are formed opposite sides of the container, project outwardly from the side of the container, and depend beneath flange 220. Each tab 226 includes an opening 228 for receiving and securing an end of the handle.

[0030] A locking means for stacking containers 200 includes a pair of notches 230 formed on the outer margin of lip 218 on opposite sides of the container. A mating pair of locking lugs 232 extends below the respective ears 226 on opposite sides of the container. In this embodiment, the notches 230 are again formed directly above the respective ears 226 so they are ver...

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PUM

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Abstract

A stackable container (10) has a generally cylindrical body with a rounded top (12), a rounded bottom (14), and a sidewall (16). A pair of opposed ears (26) formed below the top of the body extend outwardly from the side of the body for attaching ends of a handle (24) used to lift and carry the container. The container has a locking mechanism for stacking the container with a similarly formed container so the containers are securely attached to each other to facilitate their movement. The container has a circumferential lip (18) formed about the top of the container and a pair of opposed notches (30) are formed in the lip. A pair of lugs (32) extend outwardly from the container sidewall and are sized to fit into the notch when two containers are stacked together so to attach the containers to each other and facilitate stacking of the containers. In one embodiment the notches and lugs are aligned with the respective ears; while in another embodiment they are offset from the ears.

Description

BACKGROUND OF THE INVENTION [0001] This invention relates to stackable containers such as plastic pails and the like; and more particularly, to containers having locking stacking lugs which allow nested containers to be stacked more uniformly. [0002] Containers such as plastic pails are designed so that containers of the same size and shape can be fitted within one another, or nested. The resulting stack of containers can include a large number of containers. Typically, as more containers are stacked together, the stack becomes unwieldy and may topple over. To prevent this, molded plastic containers are often formed so that they can be stacked together only in a certain way. By requiring a container to be placed inside another container in a preferred orientation, the stack is made more stable and less prone to toppling or falling over. Examples of such prior art container constructions are shown, for example, FIGS. 1 and 2 of the accompanying drawings. [0003] Even though containers...

Claims

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Application Information

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IPC IPC(8): B65D21/00
CPCB65D21/0233B65D25/2867B65D2303/00
Inventor RAYMUNDO, RODOLFO Q. JR.SMITH, RICKY
Owner US CAN