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US 2010/0140285 A1Published application
Airtight container and mold for press-forming the airtight container
AssigneeSam Kwang Glass Ind. Co. Ltd.
InventorByung Il CHOI
Life of this patent
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Abstract
Disclosed is an airtight container comprising: a container body having an opening portion and a flange formed along an outer circumference of the opening portion; and a lockable lid that is disposed to cover the opening portion of the container body and that has a locking wing at an edge, wherein the locking wing further comprises upper and lower supporting protrusions disposed on an inner surface of the locking wing at an interval that permits engagement of the flange between the upper and lower supporting protrusions.
Claims4
An airtight container comprising:
- a container body having an opening portion and a flange formed along an outer circumference of the opening portion;
- and
- a lockable lid that is disposed to cover the opening portion of the container body and that has a locking wing at an edge,
- wherein the locking wing further comprises upper and lower supporting protrusions disposed on an inner surface of the locking wing at an interval that permits engagement of the flange between the upper and lower supporting protrusions.
1 more element
A mold for press-forming an airtight container comprising:
- a first mold that is formed vertically to press-form a flange having an upper area and an opening portion;
- a second mold that is disposed outside the first mold to press-form a lower area of the flange;
- and
- a third mold that is disposed under the second mold to press-form a container body lower area below the flange,
- wherein the first mold further comprises a convex protrusion protruding downward at a press-formed portion of the first mold corresponding to a spot where the flange opening portion and a root of the flange meet each other, and
- wherein the flange upper area further comprises a concave groove press-formed by the convex protrusion during the press-forming.
3 more elements
Dependencies are inferred from the claim text.