Carton closure releasable by deformation

• US 4,570,845 A
• Filed: 11/23/1984
• Issued: 02/18/1986
• Est. Priority Date: 11/23/1984
• Status: Expired due to Fees

• Current Assignee: Dixie Canada Incorporated
• Original Assignee: Dixie Canada Incorporated
• Inventors: Hall, Charles J.
• Primary Examiner(s): Moy, Joseph Man-Fu
• Assistant Examiner(s): Fidei, David T.
• Application Number:
  US06/674,422
• Time in Patent Office: 452 Days
• Field of Search: 229/2.5 R, 229/32, 229/33, 229/35, 229/36, 229/44 R, 229/45 R
• US Class Current: 229/146
• CPC Class Codes: B65D 5/667 Lids in the form of an inverted tray

Abstract

A box includes a base portion and a lid portion. The base portion has at least two lateral panels which are joined together at an angled corner, and a recess is provided between the lateral panels at the corner. The lid portion includes a closure panel from which a locking tab extends, the locking tab being adapted to engage the recess when the lid portion is closed against the base portion. The closure panel is capable of curvilinear deformation by finger pressure, so that the locking tab can be withdrawn from engagement in the recess, thus permitting the box to be opened.

Claims

1. A box comprising:

a base portion having a front panel and two side panels each joined with the front panel at an angled corner, and recess means between the front panel and each side panel at the respective corners,

and a lid portion having a normally flat front panel from which two locking tabs extend in the plane of the panel and constitute extensions of the panel in opposed directions, each tab being adapted to engage in a respective recess means when the lid portion is closed against the base portion, said front panel of said lid portion being resiliently deformable by finger pressure applied between the tabs, to assume a curved shape in which the direct distance between the tabs decreases, thereby withdrawing the tabs from engagement in the recess means.

2. The box claimed in claim 1, in which the box is of cardboard, and each recess means is an aperture.

3. The box claimed in claim 1, in which the front panel of the base portion has two glue flaps, each glue flap being adhered to one of the two side panels, each glue flap having an opening adjacent its connection to the front panel, the openings constituting the respective recess means.

4. The box claimed in claim 3, in which each glue flap is adhered to its respective side panel at a region of the glue flap which is remote from the opening therein.

5. The box claimed in claim 1, in which the lid portion has a top panel of substantially rectangular configuration, from which extend a rear panel, two side panels and a forward panel, said front panel of the lid portion being hingedly attached to said forward panel;

and in which the base portion has a bottom panel of substantially rectangular configuration, from which upwardly extend said front panel of said base portion, said side panels and a rear panel.

6. The box claimed in claim 4, in which the lid portion has a top panel of substantially rectangular configuration, from which extend a rear panel, two side panels and a forward panel, said front panel of the lid portion being hingedly attached to said forward panel;

and in which the base portion has a bottom panel of substantially rectangular configuration, from which upwardly extend said front panel of said base portion, said side panels and a rear panel.

7. The box claimed in claim 6, in which the box is of cardboard.

8. The box claimed in claim 5, in which the rear, side and forward panels of the lid portion diverge downwardly, and in which the front, side and rear panels of the base portion diverge upwardly.