# US 11,897,666 B2 · Package > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,897,666 B2 - Document ID: US11897666B2 - Status: Granted - Kind: B2 - Application number: 17/295,694 - Filed: 2019-09-27 - Published: 2023-05-25 - Granted: 2024-02-13 - Earliest claimed: 2018-11-22 - Assignees: Nipro Corporation - Applicants: Nipro Corporation - Inventors: Mitsuru Hasegawa - Web page: https://patentgrep.com/patent/US11897666B2 ## CPC - B65D 43/22: Devices for holding in closed position, e.g. clips - B65D 43/162: {the container, the lid and the hinge being made of one piece (B65D43/161 takes precedence)} - B65D 2401/05: Tearable non-integral strips - B65D 2401/10: Tearable part of the container (B65D2401/60 takes precedence) - B65D 2401/15: Tearable part of the closure (B65D2401/60 takes precedence) - B65D 2401/20: Frangible elements completely enclosed in closure skirt - B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES ## Abstract A package includes a first side, a second side and a hinge. As the first side and the second side pivot around the hinge, the first side and the second side make transition between a closed state and an opened state. The first side includes a first fitting portion in a projecting shape, a rigid portion provided in a partial section on a line that goes around the first fitting portion, and a first weak portion provided in a remaining section on the line that goes around the first fitting portion and being lower in rigidity than the rigid portion. The second side includes a second fitting portion in a recessed shape and fitted to the first fitting portion in the closed state and a second weak portion provided on a line that goes around the second fitting portion and being lower in rigidity than the rigid portion. ## Claims ### Claim 1 A package formed from a flexible sheet material, the package comprising: a first side and a second side; and a hinge that foldably connects the first side and the second side to each other, wherein the first side and the second side transition between a closed state and an opened state by pivoting around the hinge, wherein, in the closed state, a space for accommodating an article being provided, in the opened state, the space being opened, wherein the first side includes: a first fitting portion in any one of a projecting shape and a recessed shape, a rigid portion provided in a partial section on a line that goes around the first fitting portion, and a first weak portion provided in a remaining section on the line that goes around the first fitting portion and being lower in rigidity than the rigid portion, and wherein the second side includes: a second fitting portion in an other of the projecting shape and the recessed shape and thus configured to be fitted to the first fitting portion in the closed state, and a second weak portion provided on a line that goes around the second fitting portion and being lower in rigidity than the rigid portion. ### Claim 2 (depends on 1) The package according to claim 1, wherein the first side further includes a peripheral portion that forms a periphery of the sheet material at a position distant in a direction of radius from a pivot center of the first side and the second side in the hinge, the first fitting portion is provided at a position adjacent to the peripheral portion, and a length from the peripheral portion to the first weak portion is longer than a length from the peripheral portion to the rigid portion. ### Claim 3 (depends on 1) The package according to claim 1, wherein the first weak portion is provided by continuously cutting the first side along the line that goes around the first fitting portion. ### Claim 4 (depends on 1) The package according to claim 1, wherein the second weak portion is provided as a perforated portion provided by intermittently cutting the second side along the line that goes around the second fitting portion. ### Claim 5 (depends on 4) The package according to claim 4, wherein the perforated portion includes a cut portion where the second side is cut and a non-cut portion where the second side is not cut, and in the closed state, the non-cut portion is arranged as being superimposed on an area from the first fitting portion to the first weak portion on a surface of the first side. ### Claim 6 (depends on 1) The package according to claim 1, wherein the first side is provided with a depression in a depressed shape in conformity with a shape of the article, the first fitting portion is in the projecting shape when viewed from the second side in the closed state, and the second fitting portion is in the recessed shape when viewed from the first side in the closed state. ### Claim 7 (depends on 1) The package according to claim 1, wherein the first side further includes a third fitting portion provided at a position distant from the first fitting portion, and the second side further includes a fourth fitting portion provided at a position distant from the second fitting portion and fitted to the third fitting portion in the closed state.