Patent US3993239A successfully refreshed from Google Patents.
US3993239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stackable cardboard box, in particular for fruit and similar products
Assignee: Individual
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Filing: 1975-04-23
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Granted: 1976-11-23
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Expires: 1995-04-23
Abstract
Abstract A stackable cardboard box has a rectangular bottom wall and integrally formed inwardly inclined side walls attached by way of flaps to separately formed vertically extending generally trapezoidal end walls whereby the formed boxes have a greater transverse dimension at the bottom than at the top to facilitate stacking and ventilation.
Inventors
- 👤 Heribert G. Exel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:14
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/001; B65D5/32; B65D5/322; B65D5/323; Y; Y10; Y10S; Y10S229/00; Y10S229/915; Y10S229/919
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
188 words
A stackable box especially useful in packaging and handling fruit and similar products, said box being formed from three separate blanks including a first blank having a central panel defining the bottom wall of the box and two side panels each defining one side wall of the box and second and third substantially identical blanks one defining each end wall of the box when assembled with said first blank, said side panels and central panel each having assembly flanges integrally formed on their opposed ends overlaying and attached to the outer surface of said second and third blanks along the bottom and side edges thereof when said blanks are assembled to form said box, the improvement wherein each of said blanks is formed from corrugated paperboard with the corrugations in said end walls and in said side panels running generally vertically, and wherein said bottom panel includes a portion extending upwardly from said bottom wall and defining a separating wall in said box, said separating wall being in the general form of an inverted V with the side areas thereof being separated at the bottom of said box.
Claim 2
Dependent Claim
188 words
A stackable box especially useful in packaging and handling fruit and similar products, said box being formed from three separate blanks including a first blank having a central panel defining the bottom wall of the box and two side panels each defining one side wall of the box and second and third substantially identical blanks one defining each end wall of the box when assembled with said first blank, said side panels and central panel each having assembly flanges integrally formed on their opposed ends overlaying and attached to the outer surface of said second and third blanks along the bottom and side edges thereof when said blanks are assembled to form said box, the improvement wherein each of said blanks is formed from corrugated paperboard with the corrugations in said end walls and in said side panels running generally vertically, and wherein said bottom panel includes a portion extending upwardly from said bottom wall and defining a separating wall in said box, said separating wall being in the general form of an inverted V with the side areas thereof being separated at the bottom of said box.
Claim 3
Dependent Claim
48 words
The stackable box as defined in claim 1 wherein said second and third blanks have generally parallel top and bottom edges and lateral edges extending inwardly and upwardly from the bottom edge whereby the top of the box is smaller in area than the bottom of said box.
Claim 4
Dependent Claim
48 words
The box as defined in claim 2 further comprising generally rectangular extension panels integrally formed on the top edge of said side panels, said extension panels extending vertically downward inside said box with the bottom edges of said extension panels supported by the bottom panel of the box.
Claim 5
Dependent Claim
58 words
The box as defined in claim 2 wherein said flaps formed on said side walls are formed with an angular extension projecting outwardly at an angle α relative to the edge thereof which defines the top of the box, the angle α being equal to the angle of inclination of the side walls with regard to the vertical.
Claim 6
Dependent Claim
68 words
The box as defined in claim 4 further comprising a notch with an angle of 90° + 2 α provided between the adjacent edges of the flaps formed on said side walls and the flaps of the bottom panel when the blank forming said bottom panel and said side walls is in a planar condition whereby said adjacent edges are in edge-to-edge relation when said box is assembled.
Claim 7
Dependent Claim
26 words
The box as defined in claim 1 wherein one of said two side walls extends inclined upwardly and toward a box opening having sloping side edges.
Claim 8
Dependent Claim
46 words
The box as defined in claim 1 whereby said box is closed on all sides and whereby two side areas opposite to one another extend inlined upward and inwardly to result in a construction element, e.g. an element of a lost casing, which is statically loadable.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-23 | 1980-05-24 | 1980-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-23 | 1984-05-24 | 1984-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-23 | 1988-05-24 | 1988-11-23 | $7700.00 | Window Closed / Lapsed |