Title: Shipping container and blank therefor

Abstract: A shipping container is provided which is formed from a blank of foldable sheet material. The container includes a top closure flap which is foldably connected to the upper edge of one of four side panels. The closure flap has a shape which corresponds substantially to the area delimited by the upper edges of the side panels. Foldably connected to a peripheral segment of the closure flap is a finger pull tab which is disposed a substantial distance from the connection of the flap to the side panel. The finger pull tab facilitates initially moving the closure flap from a closed position to an open position. A first pair of alternate bottom closure flaps is foldably connected to corresponding side panels. Each of the first pair of bottom closure flaps is provided with a locking tab which is interlockingly accommodated within an elongated slot formed in a bottom closure flap which is one of a second pair of alternate bottom closure flaps.

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Inventors: Olson, Gregory J. (Burlington, WI, US)
Chapman, Wayne A. (Burlington, WI, US)

Application Number: 711493
Filing Date: 1976-08-04
Publication_date: 1977-11-22
Assignee: Packaging Corporation of America (Evanston, IL)
Primary Class(es): 229/125 229/117.12, 229/117.13, 229/117.22, 229/117.23, 229/185, 229/190, 229/905
Other Classes:
US Patent Ref:

1134998	Apr, 1915	Davidson	229/39.
1852527	Apr, 1932	King	229/39.
1956619	May, 1934	McAleer	229/39.
2209593	Jul, 1940	Bernis	229/39.
2329628	Sep, 1943	Lanigan	229/37.
2783933	Mar, 1957	Sharts	229/37.
3365109	Jan, 1968	Kessler et al.	229/39.
3417911	Dec, 1968	Hennessey	229/37.

Other Refs: 98,558

Nov, 1924	OE

Primary Examiner: Moorhead, Davis T.
Assistant Examiner:
Attorney: Neuman, Williams, Anderson & Olson