Envelopes – wrappers – and paperboard boxes – Paperboard box – End structure
Patent
1978-12-29
1980-03-04
Moorhead, Davis T.
Envelopes, wrappers, and paperboard boxes
Paperboard box
End structure
220 4R, B65D 502
Patent
active
041913213
ABSTRACT:
Disclosed is a paper-board end cap for a tubular central section in the shape of an oval sleeve. The end cap is found from a rectangular paper-board having an oval shaped crease symmetrical about the long axis of the rectangle. The end cap is folded along the crease and inserted into the tubular central section.
REFERENCES:
patent: 615716 (1898-12-01), Kimmard
patent: 1186184 (1916-06-01), Grasberger
patent: 1615254 (1927-01-01), Barker
patent: 1947190 (1934-02-01), Cody
patent: 2053680 (1936-09-01), Page
patent: 2134321 (1938-10-01), Amberg
patent: 2489616 (1949-11-01), Buttery
patent: 2671593 (1954-03-01), Page
patent: 3700018 (1972-10-01), Goglio
patent: 3986659 (1976-10-01), Vajtay
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