[특허]Container sidewall strengthening apparatus and methods

Ropak Corporation

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Container sidewall strengthening apparatus and methods

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B65D-006/04 B65D-006/38 B65D-008/12 B65D-090/02
미국특허분류(USC)	220/671; 220/675
출원번호	UP-0256925 (2002-09-27)
등록번호	US-7740149 (2010-07-12)
발명자 / 주소	Luburic, Frano
출원인 / 주소	Ropak Corporation
대리인 / 주소	McKenna Long & Aldridge LLP
인용정보	피인용 횟수 : 6 인용 특허 : 52

초록

Apparatus and methods relate to containers having a sidewall portion with at least one generally vertical corrugation therein. The containers can be of a variety of shapes, sizes, cross-sections, and materials. The corrugation improves the container sidewall strength and resistance to buckling under compressive loads such as stacking of multiple containers.

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I claim: 1. A nestable plastic container, comprising: a base; a sidewall integrally formed with and extending upwardly from the base, the sidewall surrounding an inner cavity and having an upper edge defining an opening into the inner cavity; a first generally vertical corrugation in a corner of the sidewall and the base, the corrugation being concave as viewed from outside the container; upper and lower generally horizontal reinforcement ribs integrally formed with and crossing the corner of the sidewall, wherein the upper generally horizontal reinforcement rib is below the upper edge of the sidewall, and wherein the distance between the lower generally horizontal reinforcement rib and the base is greater than the distance between the lower generally horizontal reinforcement rib and the upper edge of the sidewall; and a handle connected to and integrally formed with the lower generally horizontal reinforcement rib, wherein the base, the sidewall, the first generally vertical corrugation, the upper and lower generally horizontal reinforcement ribs and the handle are integrally formed together via injection molding. 2. The plastic container of claim 1, wherein the first generally vertical corrugation protrudes inward a distance greater than a thickness of the sidewall. 3. The plastic container of claim 1, wherein the upper and lower generally horizontal ribs extend from the sidewall a distance greater than a thickness of the sidewall. 4. The plastic container of claim 1, wherein a distance between the upper edge and the lower generally horizontal rib is greater than a distance the first generally vertical corrugation protrudes inward. 5. The plastic container of claim 1, wherein a distance between the upper edge and the lower generally horizontal rib is greater than a width of the first generally vertical corrugation. 6. The plastic container of claim 1, wherein a distance between the upper edge and the lower generally horizontal rib is greater than a distance the upper and lower generally horizontal ribs extend from the sidewall. 7. The plastic container of claim 1, wherein a distance between the upper edge and the upper horizontal rib is greater than a thickness of the sidewall. 8. The plastic container of claim 1, wherein the upper and lower horizontal reinforcement ribs extend from the sidewall a distance less than a distance between the upper and lower horizontal reinforcement ribs. 9. The plastic container of claim 1, wherein the first generally vertical corrugation has a height greater than the distance between the upper and lower horizontal reinforcement ribs. 10. The plastic container of claim 1, wherein the first vertical corrugation has a height greater than the distance between the lower horizontal reinforcement rib and the upper edge of the sidewall. 11. The plastic container of claim 1, wherein a length of the upper horizontal reinforcement rib is greater than the length of the base. 12. The plastic container of claim 1, wherein the corner of the sidewall is symmetric with respect to a vertical plane 45 degrees from both sides adjacent to the corner portion. 13. The plastic container of claim 1, wherein the upper edge of the sidewall has a thickness less than an amount the first generally vertical corrugation protrudes into the sidewall. 14. The plastic container of claim 1, wherein the first generally vertical corrugation protrudes away from both sides adjacent to the corner portion. 15. The plastic container of claim 1, wherein a width of the first generally vertical corrugation at the base is greater than a thickness of the sidewall. 16. The plastic container of claim 1, wherein the container is symmetric about a vertical plane parallel to the length of the base and cutting the container in half. 17. The plastic container of claim 1, wherein the container is symmetric about a vertical plane parallel to the width of the base and cutting the container in half. 18. The plastic container of claim 1, wherein the first generally vertical corrugation stops below the top of the sidewall. 19. The plastic container of claim 1, further comprising a second generally vertical corrugation nearest to the first generally vertical corrugation, the second corrugation being concave as viewed from outside the container. 20. The plastic container of claim 19, wherein a distance between the first and second generally vertical corrugations is greater than a distance the first and second vertical corrugations protrude inward. 21. The plastic container of claim 19, wherein a distance between the first and second generally vertical corrugations is less then a height of the first and second generally vertical corrugations. 22. The plastic container of claim 1, further comprising a second generally vertical corrugation in another corner of the sidewall, the second corrugation being concave as viewed from outside the container. 23. The plastic container of claim 22, wherein no generally vertical corrugations being concave as viewed from outside the container are included between the first and second generally vertical corrugations. 24. The plastic container of claim 22, wherein a height of the container is greater than a distance between the first and second generally vertical corrugations. 25. The plastic container of claim 22, wherein sidewalls have no corrugations except in four corner portions of the container. 26. The plastic container of claim 22, wherein the sidewall extends substantially straight from one corner portion to another corner portion. 27. The plastic container of claim 1, wherein the handle protrudes from an exterior of the sidewall and is between the upper and lower reinforcement ribs. 28. The plastic container of claim 27, wherein a length of the handle is greater then a distance between the upper and lower horizontal reinforcement ribs. 29. The plastic container of claim 27, wherein a length of the handle is greater than a distance between the upper horizontal reinforcement rib and the upper edge of the sidewall. 30. The plastic container of claim 27, wherein a distance between the sidewall and an exterior-facing wall of the handle is less than a distance between the lower horizontal reinforcement rib and the upper edge of the sidewall. 31. A nestable plastic container, comprising: a base; a sidewall integrally formed with and extending upwardly from the base, the sidewall surrounding an inner cavity and having an upper edge defining an opening into the inner cavity, wherein a distance between the upper edge of the sidewall and the base is substantially the same around the periphery of the container; a first generally vertical curved corrugation in a corner of the sidewall and the base, the corrugation being concave as viewed from outside the container; upper and lower generally horizontal reinforcement ribs integrally formed with and crossing the corner of the sidewall, wherein the upper reinforcement rib is below the upper edge of the sidewall, wherein the distance between the upper reinforcement rib and the upper edge of the sidewall is substantially the same around the periphery of the container, wherein the distance between the lower reinforcement rib and the upper edge of the sidewall is substantially the same around the periphery of the container, and wherein the distance between the lower reinforcement rib and the base is greater than the distance between the lower reinforcement rib and the upper edge of the sidewall; and a protruding handle connected to and integrally formed with the lower reinforcement rib, the protruding handle being between the upper and lower reinforcement ribs, wherein the base, the sidewall, the first corrugation, the upper and lower reinforcement ribs and the protruding handle are integrally formed together as a single unit via an injection molding.

이 특허에 인용된 특허 (52)

이 특허를 인용한 특허 피인용횟수: 6

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Container sidewall strengthening apparatus and methods

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이 특허에 인용된 특허 (52)

이 특허를 인용한 특허 피인용횟수: 6

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Container sidewall strengthening apparatus and methods

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이 특허에 인용된 특허 (52)

이 특허를 인용한 특허 피인용횟수: 6

IPC 상위 출원인

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IPC 상세정보(version : 201201)

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