Receptacles – Sectional – Folding
Patent
1987-03-23
1989-02-28
Pollard, Steven M.
Receptacles
Sectional
Folding
220 15, 220 4F, B65D 724
Patent
active
048077747
DESCRIPTION:
BRIEF SUMMARY
This invention relates containers for the transport of liquids which containers are of the type comprising a base and a number of external walls with a plastic film bag inside the walls to contain liquid. Shock and other loads applied to a filled container of the above type can, when extreme in nature, cause bag rupture. It has been found that ruptures occur most frequently because of the failure of the walls adjacent the base of the container.
This invention has been devised to reinforce the vulnerable zone by providing a container base with several unique features which will overcome at least the type of failure referred to above. The base when combined with external walls in the conventional manner will provide a container for liquids which will withstand very severe operating conditions.
The present invention can be broadly said to comprise a container base assembly comprising a four sided base member and four substantially rectangular wall members with first edges of the wall members respectively permanently coupled to the base member at the four sides thereof in a manner allowing the wall members to be raised to an upright erected condition and to be lowered to a position where they overlie the base member, co-operating positioning means on the base member and on the first edges of the wall members to releasably maintain the wall members in an erected condition and interlocking means along opposed second and third edges of each wall member adjacent the first edge thereof whereby the wall members when erected are interlocked to provide a continuous four sided wall system.
A presently preferred form of the invention will now be described with reference to the accompanying drawings in which:
FIG. 1 is a plan view of the container base when inn a wall folded condition,
FIG. 2 is an elevation from one side of the container base of FIG. 1,
FIG. 3 is a sectional elevation along the section line 3--3 of FIG. 1,
FIG. 4 is a view similar to FIG. 3 of the container base when in a wall erected condition,
FIG. 5 is a view similar to FIG. 4 with panels mounted on the container base,
FIG. 6 is an elevation of a container comprised of the container base of FIG. 1 and panels and a lid,
FIG. 7 is a fragmentary plan view of one form of an interlock arrangement between adjacent edges of wall members of the container base,
FIG. 8 is a view similar to FIG. 7 of an alternate form of interlock,
FIG. 9 is a perspective view of the interlock of FIG. 7,
FIG. 10 is a view similar to FIG. 7 showing a variant of the interlock of FIG. 7,
FIG. 11 is a view illustrating the appearance of the FIG. 10 interlock when complete,
FIG. 12 is a plan view showing the interlocks between the upright edges of the wall members using the FIG. 7 arrangement,
FIG. 13 is an enlarged fragmentary view of portion of the container base and a wall member when in a folded condition,
FIG. 14 is a view similar to FIG. 13 showing an initial stage in the erection of the wall member,
FIG. 15 illustrates a later stage in the wall member erection and with the wall members upright,
FIG. 16 illustrates the locking of the wall member in the erected condition, and
FIG. 17 illustrates to an enlarged scale the interconnection of a panel with a container base,
The container base as illustrated comprises a base member 1 having sides 2, 3, 4 and 5 with front and rear openings 6 to allow for entry under the base by the tynes of a fork lift or other truck. Around the lower edges of the sides 2 to 5 there is a foot flange 7. FIG. 3 shows additional under members 8 to assist with the support of downloads and lateral members 9 tie the members 8 to the sides 3 and 5.
Around the load supporting surface central portion 10 of the container base there is a peripheral ring-like flange 11. A box section trough 12 is located below a gap 13a between the peripheral edge of the surface 10 and the inner perimeter of the flange 11. The form of the trough 12 is best seen in FIG. 13. It is to be noted that the top surface of the flange 11 is at an elevation above the load supporting surface
REFERENCES:
patent: 3306487 (1967-02-01), Gregoire
patent: 3628683 (1971-12-01), Friedrich
patent: 3651974 (1972-03-01), Barry et al.
patent: 3655087 (1972-04-01), Luisada
patent: 3809278 (1974-05-01), Csumrik
patent: 3874546 (1975-04-01), Sanders et al.
patent: 4020967 (1977-05-01), Hammond et al.
patent: 4452366 (1984-06-01), Nagai et al.
Pollard Steven M.
Schindler Edwin D.
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