Envelopes – wrappers – and paperboard boxes – Paperboard box – Window or transparent portion
Patent
1993-05-19
1993-12-21
Elkins, Gary E.
Envelopes, wrappers, and paperboard boxes
Paperboard box
Window or transparent portion
206 4531, B65D 542
Patent
active
052715523
ABSTRACT:
A display box has first and second opaque sides meeting at a corner and defining a window opening extending around the corner. A semi-rigid transparent sheet in the window opening overlaps portions of the first and second opaque sides adjacent the window opening and is secured thereto. The transparent sheet has a main fold line extending across the window opening in line with the corners and a corner portion at at least one end of the main fold line. The or each corner portion is formed by a first corner fold line in the transparent sheet adjacent the first opaque side and extending from the window opening to an adjacent end of the transparent sheet, a second corner fold line in the transparent sheet adjacent the second opaque side and extending from the window opening to the adjacent end of the transparent sheet, and a third corner fold line in the transparent sheet between the first and second fold lines and extending from the window opening to the adjacent end of the transparent sheet. When the box is in an erected configuration, the corner portion is raised away from the corner formed by the first and second opaque sides, the raised corner portion having a first segment between the first and third corner fold lines extending away from the first opaque side and a second segment between the first and third fold lines extending away from the second opaque side.
REFERENCES:
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patent: 4964563 (1990-10-01), Chaygneaud-Dupuy
patent: 5160083 (1992-11-01), Lafreniere
Brantford Paper Box Company Limited
Elkins Gary E.
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