Container having an improved hinge
First Claim
Patent Images
1. A clamshell container comprisinga first side and a second side;
- a base having a bottom wall;
a lid having a top wall;
a rear wall extending between said bottom wall and said top wall;
a first fold line on said rear wall extending inwardly for a first distance from said first side to an inner end;
a second fold line on said rear wall extending inwardly for a second distance from said second side to an inner end;
a first cut extending inwardly from said first fold line inner end toward said second side;
a second cut extending inwardly from said second fold line inner end toward said first side;
wherein said first fold line is spaced apart from said base by a third distance and said second fold line is spaced apart from said base by a fourth distance greater than said third distance.
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Abstract
A clamshell container having an improved hinge for reducing container rear wall buckling when the container is opened and closed is disclosed. The hinge includes first and second offset partial hinge portions, each extending inwardly from one side of the container for less than the full width of the container. The partial hinge portions include fold line portions near the container side walls and parallel slit portions in the central area of the rear wall. A blank for forming the subject container is also disclosed.
31 Citations
19 Claims
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1. A clamshell container comprising
a first side and a second side; -
a base having a bottom wall;
a lid having a top wall;
a rear wall extending between said bottom wall and said top wall;
a first fold line on said rear wall extending inwardly for a first distance from said first side to an inner end;
a second fold line on said rear wall extending inwardly for a second distance from said second side to an inner end;
a first cut extending inwardly from said first fold line inner end toward said second side;
a second cut extending inwardly from said second fold line inner end toward said first side;
wherein said first fold line is spaced apart from said base by a third distance and said second fold line is spaced apart from said base by a fourth distance greater than said third distance. - View Dependent Claims (2, 3, 4, 5)
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6. The container of 5 wherein said second cut includes a second end spaced apart from said second cut first end and said rear wall includes a second section of uncreased paperboard material between said second cut second end and said first side.
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7. An integral hinged panel having a first and a second side and a width between said first side and second side comprising
a top hinge panel; -
a bottom hinge panel;
a hinge region connecting said top panel and said bottom panel, said hinge region comprising a first fold line extending from said first side toward said second side and a second fold line non-collinear with said first fold line and extending from said second side toward said first side, the length of said first fold line being less than the width of said panel. - View Dependent Claims (8, 9, 10, 11)
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12. An integral hinged panel having a first side and a second side comprising a first panel portion and a second panel portion connected by a hinge, wherein said hinge comprises:
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a first partial hinge extending from said first side toward said second side to a point spaced away from said second side; and
,a second partial hinge parallel to said first partial hinge and extending from said second side toward said first side to a point spaced away from said first side. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A blank for forming a clamshell container comprising:
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a first side and a second side;
a first end panel extending between said first side and said second side and having a first edge;
a second end panel extending between said first side and said second side and having a first edge;
a central panel extending between said first side and said second side and between said first end panel first edge and said second end panel first edge;
said central panel including first and second cuts parallel to each other and to said first end panel first edge; and
,a first fold line extending from a first end of said first cut to said first end panel first edge. - View Dependent Claims (19)
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Specification