Carton panel lock
AssigneeRiverwood International Corporation
InventorRobert L. Sutherland
Life of this patent
Estimating the term…
Abstract
This invention relates to a single stage locking arrangement in which the male lock is formed from the terminal edge of one flap and the female lock is located in a second flap and has a unique locking ledge located on an S-shaped cut line extending from the ends of the main cut line of the female lock.
Claims12
A single stage lock arrangement for locking together two flaps, said lock arrangement comprising:
- a. a first flap having a first terminal edge and a second flap having a second terminal edge, said first flap having at least one male lock attached to the first terminal edge, said male lock having a nose and two locking shoulders spaced from the first terminal edge;
- and
- b. said second flap having at least one female lock in alignment with said male lock, said female lock having a lock cut line with two ends and which is generally parallel to and spaced from the second terminal edge, an aperture adjacent the lock cut line between said lock cut line and second terminal edge for facilitating the entry of a nose of said male lock along said lock cut line, said aperture being closed by two doors which are defined by a door cut line generally parallel to and spaced between said lock cut line and the second terminal edge, said doors being hinged to facilitate the entry of the nose of said male lock along said lock cut line, said lock cut line having a curved cut line extending from each end which curves away from the second terminal edge to define a locking ledge for engaging a locking shoulder of said male lock.
A blank for wrap-around carton for containing a plurality of containers having a top panel foldably connected to two side panels, one of which is foldably connected to a first flap with a first terminal edge and the other side panel is foldably connected to a second flap with a second terminal edge, said first flap having at least one male lock attached to said first terminal edge, said male lock having a nose and two locking shoulders spaced from said first terminal edge, said second flap having at least one female lock in alignment with the male lock, said female lock having a lock cut line with two ends and which is generally parallel to and spaced from said second terminal edge, an aperture adjacent the lock cut line between said lock cut line and second terminal edge facilitating the entry of the nose of the male lock along said lock cut line, said aperture being closed by two doors which are defined by a door cut line generally parallel to and spaced between said lock cut line and said second terminal edge, said doors being hinged to facilitate the entry of the nose of the male lock along said cut lines, said lock cut line having a curved cut line extending from each end which curves away from the second terminal edge to define a locking edge for engaging a locking shoulder of said male lock.
Dependencies are inferred from the claim text.