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US4287998A Expired / Lapsed US ⏱️ 0.0 years remaining

Dew worm carton

Assignee: Somerville Belkin Industries Ltd
•
Filing: 1980-05-13
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Granted: 1981-09-08
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Expires: 2000-05-13
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Abstract

Abstract The invention relates to a paperboard container with small ventilation holes in the order of less than 3/32 of an inch in diameter. The holes are not punched but rather are formed by making small U-shaped cuts at a corner fold of the container blank and by making the corner fold in the reverse direction.

Inventors

  • 👤 John Zimmermann

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 01:05
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/4295

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 236 words
A paperboard container blank having, an inside face and an outside face adjacent wall panels defined by fold lines that are die formed depressions in said inside face of the container blank; U-shaped cuts in the blank each having two arms and a base, each arm having a free end and an end joining the base, said U-shaped cuts interrupting the fold lines to form U-shaped tabs, the direction of the arms of the U-shaped cuts being transverse of the direction of the fold lines, the tops of the arms of the U-shaped cuts being on a first one of two adjacent panels adjacent a fold line, and the base of the U-shaped cuts being in the second one of two adjacent panels; said U-shaped cuts in said blank being wider at the inside face of the blank than they are at the outside face of the blank; the distance between the arms of said U-shaped cut being less than 3/32 of an inch and the length of the arms being greater than the distance between them, the container being adapted for set up by folding said blank about said fold line whereby said U-shaped tabs separate from said second panel and remain in the plane of said first panel to leave a ventilating opening in said second panel at the corner between said first panel and said second panel when the container is set up.
Claim 2
Dependent Claim 236 words
A paperboard container blank having, an inside face and an outside face adjacent wall panels defined by fold lines that are die formed depressions in said inside face of the container blank; U-shaped cuts in the blank each having two arms and a base, each arm having a free end and an end joining the base, said U-shaped cuts interrupting the fold lines to form U-shaped tabs, the direction of the arms of the U-shaped cuts being transverse of the direction of the fold lines, the tops of the arms of the U-shaped cuts being on a first one of two adjacent panels adjacent a fold line, and the base of the U-shaped cuts being in the second one of two adjacent panels; said U-shaped cuts in said blank being wider at the inside face of the blank than they are at the outside face of the blank; the distance between the arms of said U-shaped cut being less than 3/32 of an inch and the length of the arms being greater than the distance between them, the container being adapted for set up by folding said blank about said fold line whereby said U-shaped tabs separate from said second panel and remain in the plane of said first panel to leave a ventilating opening in said second panel at the corner between said first panel and said second panel when the container is set up.
Claim 3
Dependent Claim 43 words
A paperboard container blank as claimed in claim 1 in which the base of said U-shaped cuts is spaced from the foldline its respective U-shaped cut interrupts a distance not substantially greater than the distance between the two arms of its U-shaped cut.
Claim 4
Dependent Claim 29 words
A paperboard container as claimed in claim 1 or claim 2 in which the distance between the arms of the U-shaped cut is less than 1/16 of an inch.

References Cited (Backward Citations)

US3126867A Cited
US2365312A Cited
US2875937A Cited
FR1269909A Cited
US3937390A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-09-07 1985-03-09 1985-09-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-09-07 1989-03-09 1989-09-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-09-07 1993-03-09 1993-09-08 $7700.00 Window Closed / Lapsed

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