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US 4,498,618 AGranted
Lock arrangement between two carton closure panels
AssigneeFederal Paper Board Company, Inc.
InventorRobert L. Sutherland
Life of this patent
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AssigneeFederal Paper Board Company, Inc.
InventorRobert L. Sutherland
Estimating the term…
This relates to a lock arrangement for locking together closure panels of cartons, particular cartons of the wrap around type. The lock arrangement includes a primary lock panel which carries a primary lock arrangement including a projecting primary locking tab which is disposed on one side of a semicircular cut out or aperture and wherein there is a locking ear on the opposite side of the aperture. The other closure panel, which is the inner closure panel carries a secondary lock arrangement which includes a secondary locking tab which is connected to the secondary flap along a hinge line and is separated therefrom by an offset partial cut line so as to define a locking shoulder. When the lock arrangement is formed, the primary locking tab is locked behind a shoulder on the inner closure panel defined by the displacement of the secondary flap and the primary locking tab extends through the aperture and is locked behind the locking ear. The primary locking tabs and the secondary tabs are disposed in side by side relation with the secondary locking tab projecting generally normal to the closure panels and projecting between adjacent containers so as to hold the containers apart. The secondary flap is of a width at least equal to the overall width of the primary lock arrangement.
A lock arrangement between two carton closure panels, one of said closure panels being an inner panel and the other of said closure panels being an outer panel, each of said closure panels having a free edge, said inner panel having struck therefrom a secondary flap hingedly connected to said inner panel remote from said inner panel free edge and carrying generally at one side thereof a secondary locking tab projecting towards said inner panel free edge, the striking of said secondary flap and said secondary locking tab define in said inner panel a locking aperture having at a side thereof remote from said secondary locking tab a primary locking shoulder facing away from said inner panel free edge, said outer panel carrying a primary locking panel generally along a hinge line, said primary locking panel carrying a primary locking tab struck from said outer panel and extending across said hinge line, locking means for said secondary locking tab spaced along said hinge line from said primary locking tab, and an aperture in said terminal flap between said primary locking tab and said locking means for said secondary locking tab, said secondary flap being aligned with and fully extending the width of said primary locking tab, said aperture in said primary locking panel and said locking means being of a combined dimension generally equal to the width of and being aligned with said secondary locking tab.
Dependencies are inferred from the claim text.