[특허]Edge-tearing tamper evident container

PWP Industries

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특허 상세정보

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Edge-tearing tamper evident container

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B65D-041/32
미국특허분류(USC)	220/791; 220/004.23; 220/266; 220/377; 220/789
출원번호	UP-0512817 (2009-07-30)
등록번호	US-7712626 (2010-06-03)
발명자 / 주소	Vovan, Terry
출원인 / 주소	PWP Industries
대리인 / 주소	Knobbe, Martens, Olson & Bear LLP
인용정보	피인용 횟수 : 27 인용 특허 : 59

초록
▼

A food container formed from plastic, can be loaded with food and then closed by a clerk, and thereafter cannot be opened without tearing apart first sides (24, 26) of the base (12) and lid (16). The container is formed by a single sheet of plastic that forms a base and lid with second sides (20, 22) that are latched together and with adjacent first sides that are joined by a joint line (30) in the plastic that is creased and that has slits (40). At the joint line, the lid has a projecting lid tab (32) and the base has a projecting base tab (36). A perso...

대표
청구항
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The invention claimed is: 1. A container comprising a base and lid of plastic, the base and lid each having first and second sides and the second sides of the base and lid are latched together to inhibit initial opening thereat, said container forming an arrangement at said first side of the base and lid that requires an additional lift force on the lid to initially separate the lid first side from the base first side, but after the initial separation followed by closing of the lid it requires a lesser lift force to separate the lid first side from the base first side, wherein: at said first side, said lid and base are joined by a join line in an integral portion of said plastic, with said join line being weakened to be less resistant to tearing along said join line than along the rest of the plastic sheeting, to facilitate tearing at said join line; at said first side of said lid and base, said base has a projection extending radially outward from a gap in said join line that can be grasped, to lift said base first side with sufficient force to tear apart said lid and base along said join line and to lift said base first side with sufficient force to separate said lid first side from said base first side. 2. The container described in claim 1 wherein: said base and lid are formed of a single sheet of plastic, and along said join line, said lid and base are joined by integral portions of the plastic sheet. 3. The container described in claim 1 wherein: said base second side has a downwardly-facing base shoulder and said lid second side has an upwardly-facing lid rim part that lies under said base shoulder, to prevent said lid second side from lifting unless said lid first side has been lifted off said base first side so said lid second side can be slid so it does not lie under said base shoulder. 4. The container described in claim 1 wherein: said join line does not separate the projection from the remainder of the base. 5. The container described in claim 1 wherein: said base and lid each have adjacent flat rims lying beside said join line, and of the flat rims of said base and lid at least one of them has a bump that projects towards the other flat rim, to at least partially separate outer ends of the flat rims. 6. The container described in claim 3 wherein: said ends of the flat rims separate after the join line is torn. 7. The container described in claim 1 wherein said container has a vertical axis, and wherein: said base and lid have adjacent flat rims lying beside said join line and said join line has a pair of join line portions spaced apart along said join line where said lid and base are not joined; said projection comprising a radially-projecting base tab that lies in said space between join line portions, said base tab projecting radially outward beyond said join line, to enable said base tab to be grasped to lift said base first side. 8. The container describes in claim 7 wherein: said lid has a cutout, and said radially-projecting base tab lies in said cutout when said base has been pivoted 180 degrees from a position wherein said lid is closed on said base. 9. A method for forming a container out of a plastic sheet wherein the container can be loaded with food by a clerk and then closed by the clerk, and the container thereafter resists initial opening by a customer, comprising: forming a single plastic sheet into base and lid parts with adjacent first sides that are joined by a join line that merges with the base and lid and that is weakened to facilitate tearing along said join line; forming at least one gap in said plastic sheet along said join line, to leave a plurality of joined, weakened locations where said first sides of said base and lid are joined and a tab on said lid or base extending beyond said joined, weakened locations; and after the forming step, pivoting and folding portions of said plastic sheet on opposite sides of said join line to bring said second sides of said base and lid together, and coupling said second sides so the second side of the lid resists its upward movement away from said base second side but said lid second side can pivot to allow said lid first side to pivot open above said base first side when said first side of said lid is lifted after tearing said plastic sheet along said join line. 10. The method of claim 9 wherein: said weakened portions do not separate the projection from the remainder of the base. 11. A container comprising a base and lid of plastic, the base and lid each having first and second sides and the second sides of the base and lid are latched together to inhibit initial opening thereat, said container forming an arrangement at said first side of the base and lid that requires an additional lift force on the lid to initially separate the lid first side from the base first side, but after the initial separation followed by closing of the lid it requires a lesser lift force to separate the lid first side from the base first side, wherein: at said first side, said lid and base are joined by a fold line about which the lid and base can rotate relative to each other, said fold line including a weakened portion that is less resistant to tearing along said fold line than along the rest of the plastic sheeting, to facilitate tearing at said weakened portion; at said first side of said lid and base, said base has a projection extending radially outward from said fold line. 12. The container described in claim 11 wherein: said base and lid each have adjacent flat rims lying beside said join line, and of the flat rims of said base and lid at least one of them has a bump that projects towards the other flat rim, to at least partially separate outer ends of the flat rims. 13. The container described in claim 11 wherein: said base second side has a downwardly-facing base shoulder and said lid second side has an upwardly-facing lid rim part that lies under said base shoulder, to prevent said lid second side from lifting unless said lid first side has been lifted off said base first side so said lid second side can be slid so it does not lie under said base shoulder.

이 특허에 인용된 특허 (59)

이 특허를 인용한 특허 피인용횟수: 27

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내보내기 구분	파일저장 인쇄 메일전송
구성항목	관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
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특허 상세정보

Edge-tearing tamper evident container

초록
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대표
청구항
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이 특허에 인용된 특허 (59)

이 특허를 인용한 특허 피인용횟수: 27

IPC 상위 출원인

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IPC 상세정보(version : 201201)

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Edge-tearing tamper evident container

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대표청구항 ▼

이 특허에 인용된 특허 (59)

이 특허를 인용한 특허 피인용횟수: 27

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

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잠시만 기다려주세요.

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