Plastic made rectangular airtight container for food

• US 6,415,947 B1
• Filed: 09/21/2000
• Issued: 07/09/2002
• Est. Priority Date: 07/15/2000
• Status: Expired due to Term

• Current Assignee: Lock & Lock Co., Ltd. (Consumer Strength Ltd.)
• Original Assignee: Hana Cobi Co., Ltd.
• Inventors: Kim, Chang-Ho
• Primary Examiner(s): NEWHOUSE, NATHAN JEFFREY
• Application Number:
  US09/667,007
• Time in Patent Office: 656 Days
• Field of Search: 220/781, 220/784, 220/786, 220/788, 220/794, 220/795, 220/324, 220/326, 229/125.29, 229/931
• US Class Current: 220/788
• CPC Class Codes: B29C 45/0025 Preventing defects on the moulded article, e.g. weld lines, shrinkage marks preventing defects on the preformed parts or layers B29C45/14836
• CPC Class Codes: B29C 45/0081 of objects with parts connected by a thin section, e.g. hinge, tear line
• CPC Class Codes: B65D 2543/00194 square or rectangular
• CPC Class Codes: B65D 2543/00296 Plastic
• CPC Class Codes: B65D 2543/005 both cup and skirt
• CPC Class Codes: B65D 2543/00555 on both the inside and the outside
• CPC Class Codes: B65D 2543/00972 Collars or rings
• CPC Class Codes: B65D 43/0218 on both the inside and the outside of the mouth of the container B65D43/0216 takes precedence
• CPC Class Codes: B65D 45/20 pivoted

Abstract

A plastic, rectangular, airtight container for accommodating food items which comprising a rectangular by shaped container main body having four sides, a plurality locking projections provided on each of the four sides of the container main body, a lid provided with locking wings which are hinged along the periphery of the lid, each said locking wing provided with locking holes which accommodate the locking projections, and each said locking wing provided with a flow intercepting hole disposed between the locking holes for forming channels therebetween so that the plastic molten liquid is induced to flow through said channels by bypassing the molten liquid flow intercepting hole.

Claims

1. A plastic, rectangular, airtight container for accommodating food items which comprises:

a rectangularly shaped container main body having four sides;

a plurality locking projections provided on each of the four sides of the container main body;

a lid provided with locking wings which are hinged along the periphery of the lid, each said locking wing provided with locking holes which accommodate the locking projections, and;

each said locking wing provided with a flow intercepting hole disposed between the locking holes for forming channels therebetween so that the plastic molten liquid is induced to flow through said channels by bypassing the flow intercepting hole.

2. The plastic, rectangular, airtight container for accommodating food as defined in claim 1, wherein each said flow intercepting hole is formed along the hinge portion of the locking wing so that entire line length of the hinge portion is shortened.

3. The plastic, rectangular, airtight container for accommodating food as defined in claim 1, wherein the lid and the container bottom are provided with complimentary recesses and protrusions to facilitate stacking.

4. The plastic, airtight container of claim 1, wherein the lid is provided with a peripheral recess for engaging with the top of the container main body, said peripheral recess adapted to contain a packing for hermetically sealing the container.

5. The plastic, airtight container of claim 1, wherein the lid is provided with a rough sand-blasted appearance.