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US3942837A Expired / Lapsed US ⏱️ 0.0 years remaining

Reinforced container divider

Assignee: ROCK-TENN COMPANY A NY CORP
•
Filing: 1975-01-02
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Granted: 1976-03-09
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Expires: 1995-01-02
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Abstract

Abstract A divider for use in a container, such as a corrugated cardboard box, has a network of intersecting partitions and reinforced folded structures at the ends of the partitions. The reinforcing structures are folded to the main body of the partitions, forming areas of increased thickness which increase the compressive strength of the divider and a container having the divider included therein. The partitions are slotted and interlocked together by use of the slots. The slots have relieved areas at the entrance to the slots and an interlocking protrusion. The opposite edges of the partitions from the slots have relieved areas. The relieved areas at the slot entrances facilitate entry of the strips into the slots and interlocking of the strips together. The protrusions mate with the relieved areas on the intersecting strips and stabilize the partition against substantial relative movement parallel to the slots and also stabilize the strips against any substantial relative movement in a direction perpendicular to the slots. The divider is made by cutting conventional cardboard stock using a conventional die cutting machine. The die cutting machine cuts partitions, the relieved areas, and the slots and scores the ends of the partitions. After the partitions have been cut and scored, they then are passed by a conventional glue mechanism, either a glue pot, brush, or an air gun glue applicator, which applies glue to the area of the partitions between the scores and the ends of the partitions. The partitions are then passed through a plow which folds the partitions along the scored lines. The folded partitions are passed through calender rolls which press the glued areas against the main body of the partitions, forming a firm bond in the folded over areas between the folded structures and the main body of the partitions.

Inventors

  • 👤 Donald W. Engle

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 20:59
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/44; B65D5/48; B65D5/48024; B65D5/48026; B65D5/48038

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 114 words
A divider for use in a container to divide the internal space of the container having a first partition extending in a first direction and a second partition extending in a direction intersecting the first partition, at least one of the partitions having a score extending transversely of the partition and spaced adjacent to an extremity of the partition, the portion of the partition between the score and the extremity being folded back along the score and joined by a glue bond to the main body of the partition to form an area of increased thickness at an end of the partition to reinforce the partition and strengthen the partition against externally applied forces.
Claim 2
Dependent Claim 114 words
A divider for use in a container to divide the internal space of the container having a first partition extending in a first direction and a second partition extending in a direction intersecting the first partition, at least one of the partitions having a score extending transversely of the partition and spaced adjacent to an extremity of the partition, the portion of the partition between the score and the extremity being folded back along the score and joined by a glue bond to the main body of the partition to form an area of increased thickness at an end of the partition to reinforce the partition and strengthen the partition against externally applied forces.
Claim 3
Dependent Claim 87 words
A partition for use in a container to divide the internal space of the container having a score extending transversely of the partition and spaced adjacent to an extremity of the partition, the portion of the partition between the score and the extremity being folded back along the score and joined by a glue bond to the main body of the partition to form an area of increased thickness at an end of the partition to reinforce the partition and strengthen the partition against externally applied forces.
Claim 4
Dependent Claim 87 words
A partition for use in a container to divide the internal space of the container having a score extending transversely of the partition and spaced adjacent to an extremity of the partition, the portion of the partition between the score and the extremity being folded back along the score and joined by a glue bond to the main body of the partition to form an area of increased thickness at an end of the partition to reinforce the partition and strengthen the partition against externally applied forces.
Claim 5
Dependent Claim 13 words
The divider of claim 1 wherein the partitions are joined by interlocking slots.
Claim 6
Dependent Claim 19 words
The divider of claim 3 wherein the interlocking slots have relieved portions adapted to facilitate assembly of the partitions.
Claim 7
Dependent Claim 16 words
The divider of claim 3 wherein the partitions have means restricting relative movement of the partitions.
Claim 8
Dependent Claim 141 words
A divider for use in a container to divide the internal space of the container and reinforce the container having a plurality of partitions extending in a first direction and at least one partition extending in a direction intersecting the first partitions, the partitions having means to interlock into a network to divide into spaces of substantially equal volume, the partitions having cooperating means to restrict relative movement of the partitions, the ends of the partitions having reinforced portions adapted to be positioned closely adjacent to the walls of a container to strengthen the container, the reinforced portions having a score extending transversely of the strips and spaced from the extremity thereof, the area between the score and the extremity of the strip having an adhesive material thereon and being joined to the main body of the strips by the adhesive.
Claim 9
Dependent Claim 141 words
A divider for use in a container to divide the internal space of the container and reinforce the container having a plurality of partitions extending in a first direction and at least one partition extending in a direction intersecting the first partitions, the partitions having means to interlock into a network to divide into spaces of substantially equal volume, the partitions having cooperating means to restrict relative movement of the partitions, the ends of the partitions having reinforced portions adapted to be positioned closely adjacent to the walls of a container to strengthen the container, the reinforced portions having a score extending transversely of the strips and spaced from the extremity thereof, the area between the score and the extremity of the strip having an adhesive material thereon and being joined to the main body of the strips by the adhesive.
Claim 10
Independent Claim 90 words
A method of forming a container divider comprising cutting a first partition element, slotting the element, scoring the element in a location adjacent to the extremity of the element, applying an adhesive to the element at a location between the score and the extremity of the partition, and joining the adhesive coated portion of the element to the main body of the element by forming an adhesive bond, thereby forming an area of increased strength and rigidity to reinforce force the divider and a container having the divider incorporated therein.
Claim 11
Independent Claim 90 words
A method of forming a container divider comprising cutting a first partition element, slotting the element, scoring the element in a location adjacent to the extremity of the element, applying an adhesive to the element at a location between the score and the extremity of the partition, and joining the adhesive coated portion of the element to the main body of the element by forming an adhesive bond, thereby forming an area of increased strength and rigidity to reinforce force the divider and a container having the divider incorporated therein.
Claim 12
Dependent Claim 36 words
The method of claim 7 wherein a plurality of elements are formed and the elements are assembled into a network, and wherein means are formed on the elements to restrict relative movement of the assembled elements.

References Cited (Backward Citations)

US2920782A Cited
US3519191A Cited
US3384289A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-03-09 1979-09-08 1980-03-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-03-09 1983-09-08 1984-03-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-03-09 1987-09-08 1988-03-09 $7700.00 Window Closed / Lapsed

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