IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0024862
(2001-12-18)
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우선권정보 |
GB-0010515 (1995-05-24) |
발명자
/ 주소 |
- Brifcani, Mouayed Mamdooh
- Hinton, Peter James
- Kysh, Mark Christopher
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출원인 / 주소 |
- Crown Cork &
- Seal Technologies Corporation
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대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
33 인용 특허 :
49 |
초록
▼
A can end comprising a peripheral cover hook, a chuck wall dependent from a first point on the interior of the cover hook, an outwardly concave annular reinforcing bead extending radially inwards from a second point on the interior of the chuck wall, and a central panel supported by an inner portion
A can end comprising a peripheral cover hook, a chuck wall dependent from a first point on the interior of the cover hook, an outwardly concave annular reinforcing bead extending radially inwards from a second point on the interior of the chuck wall, and a central panel supported by an inner portion of the reinforcing bead, characterized in that, a line connecting the first point and the second point is inclined to an axis perpendicular to the exterior of the central panel at an angle between 30° and 60°.
대표청구항
▼
1. A method of forming a double seam between a can body and a can end, said method comprising the steps of:a) providing a can end having a circumferentially extending peripheral curl and a wall extending circumferentially and radially inward from said curl and an annular reinforcing bead extending r
1. A method of forming a double seam between a can body and a can end, said method comprising the steps of:a) providing a can end having a circumferentially extending peripheral curl and a wall extending circumferentially and radially inward from said curl and an annular reinforcing bead extending radially inward from said wall, said reinforcing bead having an interior surface, said peripheral curl comprising a seaming panel and a radiused portion extending from said seaming panel to said wall, said wall inclined between about 20° and about 60° with respect to an axial centerline of said can end; b) placing said curl of said can end into contact with a circumferentially extending flange of a can body; c) providing a rotatable chuck having first and second circumferentially extending walls, said first and second walls forming a juncture therebetween; bringing said chuck into engagement with said can end so that said juncture of said first and second walls of said chuck contacts said inclined wall of said can end; d) rotating said chuck; e) performing a first seaming operation by placing a first seaming roll into contact with said can end curl while rotating said can end so as to partially deform said curl and said can body flange into a partial seam, said rotation of said can end during said first seaming operation driven by said rotating chuck through driving contact between said juncture of said first and second walls of said chuck and said inclined wall of said can end without driving contact between said chuck and said can end bead interior surface; f) performing a second seaming operation by placing a second seaming roll into contact with said partially deformed can end curl so as to further deform said curl and said can body flange so as to further form said seam. 2. The method according to claim 1, wherein said first and second seaming operations reform said can end inclined wall by bending a first portion of said inclined wall upward by an angle of at least about 16°.3. The method according to claim 1, wherein as a result of said first and second seaming operations said can end inclined wall is reformed so that a first portion of said wall is oriented substantially cylindrically.4. The method according to claim 1, wherein prior to performing said first seaming operation said wall of said can end is inclined between about 30° and about 50° with respect to said axial centerline of said can end.5. The method according to claim 4, wherein as a result of said first and second seaming operations said can end inclined wall is reformed so that a first portion of said wall is oriented substantially cylindrically.6. The method according to claim 4, wherein said first and second seaming operations reform said can end inclined wall by bending a first portion of said inclined wall upward by an angle of at least about 26°.7. The method according to claim 1, wherein prior to performing said first seaming operation said wall of said can end is inclined between about 40° and about 45° with respect to an axial centerline of said can end.8. The method according to claim 7, wherein as a result of said first and second seaming operations said can end inclined wall is reformed so that a first portion of said wall is oriented substantially cylindrically.9. The method according to claim 7, wherein said first and second seaming operations reform said can end inclined wall by bending a first portion of said inclined wall upward by an angle of at least about 36°.10. The method according to claim 1, wherein said first circumferentially extending wall of said chuck is oriented so as to be substantially cylindrical.11. The method according to claim 10, wherein said substantially cylindrical first wall of said chuck is oriented so as to be inclined with respect to an axial centerline of said chuck by no more than about 4°.12. The method according to claim 1, wherein the distance from the lowermost point on said annular bead to the uppermost point on said curl defines a height of said can end, and wherein as a result of said first and second seaming operations said can end inclined wall is reformed so that a first portion of said wall is bent upwardly so as to substantially increase said height of said can end.13. The method according to claim 1, wherein said chuck second wall is inclined with respect to an axial centerline of said chuck that substantially matches said inclination of said can end wall, and wherein said rotation of said can end during said first seaming operation is aided by driving contact between said second wall of said chuck and said inclined wall of said can end.14. A method of forming a double seam between a can body and a can end intended for use in packaging a carbonated beverage, said method comprising the steps of:a) providing a can end having (i) a circumferentially extending peripheral cover hook, said peripheral cover hook comprising a seaming panel to be formed into a portion of said double seam during a seaming operation, (ii) an annular reinforcing bead, and (iii) a circumferentially extending wall extending from said seaming panel to said reinforcing bead, said wall comprising first and second wall portions, said first wall portion to be formed into another portion of said double seam during said seaming operation, said first wall portion extending from said seaming panel to a first location on said wall and comprising a radiused portion extending from said seaming panel, said second wall portion extending from said first wall portion at said first wall location to a second location on said wall that forms a transition with said reinforcing bead, whereby said first and second locations form end points of said second wall portion, and wherein a straight line extending between said first and second locations on said wall is inclined between about 20° and about 60° with respect to an axial centerline of said can end; b) placing said cover hook of said can end into contact with a circumferentially extending flange of a can body; c) providing a rotatable chuck comprising a first circumferentially extending wall, said chuck first wall being substantially cylindrical; d) bringing said chuck into engagement with said can end; and e) performing said seaming operation by placing one or more seaming rolls into contact with said peripheral cover hook of said can end while said can end rotates so as to deform said seaming panel of said cover hook and said first wall portion and said can body flange into said double seam, said seaming operation deforming said first wall portion such that at least a portion of said first wall portion after seaming is substantially cylindrical, said first location on said wall after said seaming operation forming the transition from said substantially cylindrical wall portion to said second wall portion, said line between said first and second locations on said wall remaining inclined between about 20° and about 60° with respect to said axial centerline after completion of said seaming operation. 15. The method according to claim 14, wherein during said seaming operation at least a portion of said can end wall first portion is reformed by bending upward by an angle of at least about 16°.16. The method according to claim 14, wherein said line between said first and second locations on said wall of said can end is inclined between about 30° and about 50° with respect to an axial centerline of said can end prior to performing said seaming operation.17. The method according to claim 16, wherein during said seaming operation at least a portion of said can end wall first portion is reformed by bending upward by an angle of at least about 26°.18. The method according to claim 14, wherein said line between said first and second locations on said second wall of said can end is inclined between about 40° and about 45° with respect to an axial centerline of said can end.19. The method according to claim 18, wherein during said seaming operation at least a portion of said can end wall first portion is reformed by bending upward by an angle of at least about 36°.20. The method according to claim 14, wherein said substantially cylindrical first wall of said chuck is oriented so as to be inclined with respect to an axial centerline of said chuck by no more than about 4°.21. The method according to claim 14, wherein the distance from the lowermost point on said annular bead to the uppermost point on said cover hook defines a height of said can end, and wherein as a result of said seaming operation at least a portion of said can end first wall portion is bent upwardly into said substantially cylindrical orientation so as to substantially increase said height of said can end.22. The method according to claim 14, whereinf) said annular bead has an interior surface thereof; g) said chuck further comprises a second wall, said first and second walls of said chuck form a juncture therebetween; h) said seaming operation comprises (i) performing a first seaming operation by placing a first seaming roll into contact with said can end cover hook while said can end is rotated so as to partially deform said cover hook and said first wall portion and said can body flange into a partial seam, and (ii) performing a second seaming operation by placing a second seaming roll into contact with said partially deformed can end cover hook so as to further deform said cover hook and said first portion and said can body flange so as to further form said seam; i) said rotation of said can end during said first seaming operation is accomplished by imparting driving contact between said juncture of said first and second walls of said chuck and said wall of said can end but without imparting driving contact between said chuck and said can end bead interior surface. 23. The method according to claim 14, further comprising the step of filling the can body with a carbonated beverage prior to performing said seaming operation.24. The method according to claim 14, wherein said chuck further comprises a second chuck wall depending from said substantially cylindrical first chuck wall, said second chuck wall not being substantially cylindrical whereby said first and second chuck walls form a juncture therebetween, and wherein the step of bringing said chuck into engagement with said can end comprises bringing said chuck wall juncture into engagement with said can end wall proximate said first location on said can end wall.25. The method according to claim 24, wherein the step of performing said seaming operation further comprises bending said first wall portion of said can end upwardly around said chuck wall juncture so as to permanently deform said first wall portion.26. The method according to claim 14, wherein said wall of said can end is substantially frustoconical prior to performing said seaming operation.27. The method according to claim 14, wherein said first and second portions of said wall of said can end lie along a substantially straight line prior to performing said seaming operation.28. The method according to claim 14, wherein said line between the first and second locations on said second wall remains inclined between about 30° and about 50° after seaming.29. The method according to claim 14, wherein said line between the first and second locations on said second wall remains inclined between about 40° and about 45° after seaming.30. The method according to claim 14, wherein, in said step c) of performing the seaming operation, rotation of said can end is achieved without imparting driving contact between said chuck and a bottom interior surface of said reinforcing bead.31. The method according to claim 14, wherein said chuck further comprises a second chuck wall depending from said substantially cylindrical first chuck wall, said second chuck wall being substantially frustoconical.32. A method of forming a double seam between a can body and a can end intended for use in packaging a carbonated beverage, said method comprising the steps of:a) providing a can end having (i) a circumferentially extending peripheral cover hook, said peripheral cover hook comprising a seaming panel to be formed into a portion of said double seam during a seaming operation and (ii) a circumferentially extending wall comprising first and second portion, said first wall portion to be formed into another portion of said double seam during said seaming operation, said first wall portion extending from said seaming panel to a first location on said wall and comprising a radiused portion extending from said seaming panel, said second wall portion extending from said first wall portion at said first wall location on said wall to a second location on said wall, whereby said first and second locations form end points of said second wall portion, said second wall location being the lowermost point of said wall, and wherein a straight line extending between said first and second locations on said wall is inclined between about 20° and about 60° with respect to an axial centerline of said can end; b) placing said cover hook of said can end into contact with a circumferentially extending flange of a can body; c) providing a rotatable chuck comprising a first circumferentially extending wall, said first chuck wall being substantially cylindrical; d) bringing said chuck into engagement with said can end; and e) performing said seaming operation by placing one or more seaming rolls into contact with said peripheral cover hook of said can end so as to deform said seaming panel of said cover hook and said first wall portion and said can body flange into said double seam, said first portion of said can end wall being pressed against said chuck first wall so that at least a portion of said first portion of said can end wall is bent upward through an angle of at least about 16°, said first location on said wall after said seaming operation forming the transition from said double seam to said second wall portion, said line between said first and second locations remaining inclined between about 20° and about 60° with respect to said axial centerline. 33. The method according to claim 32, wherein said line between said first and second locations on said wall of said can end is inclined between about 30° and about 50° with respect to said axial centerline of said can end prior to performing said seaming operation.34. The method according to claim 33, wherein during said seaming operation at least a portion of said can end wall first portion is reformed by bending upward by an angle of at least about 26°.35. The method according to claim 33, wherein said line between the first and second locations on said second wall portion remains inclined between about 30° and about 50° after seaming.36. The method according to claim 32, wherein said line between said first and second locations on said wall of said can end is inclined between about 40° and about 45° with respect to said axial centerline of said can end prior to performing said seaming operation.37. The method according to claim 36, wherein during said seaming operation at least a portion of said can end wall first portion is reformed by bending upward by an angle of at least about 36°.38. The method according to claim 36, wherein said line between the first and second locations on said second wall portion remains inclined between about 40° and about 45° after seaming.39. The method according to claim 32, wherein the can end further comprises a reinforcing bead extending radially inward from said second portion of said wall at said second wall location, the distance from a lowermost point on said annular bead to the uppermost point on said cover hook defines a height of said can end, and wherein said upward bending of said first portion of can end wall during said seaming operation substantially increases said height of said can end.40. The method according to claim 32, whereinf) said can end comprises an annular reinforcing bead extending radially inward from said wall, said annular bead having an interior surface thereof; g) said chuck further comprises a second wall, said first and second walls of said chuck form a juncture therebetween; h) said seaming operation comprises (i) performing a first seaming operation by placing a first seaming roll into contact with said can end peripheral cover hook while said can end is rotated so as to partially deform said cover hook and said first wall portion and said can body flange into a partial seam, and (ii) performing a second seaming operation by placing a second seaming roll into contact with said partially deformed can end cover hook so as to further deform said cover hook and said first wall portion and said can body flange so as to further form said seam; i) said rotation of said can end during said first seaming operation is accomplished by imparting driving contact between said juncture of said first and second walls of said chuck and said wall of said can end but without imparting driving contact between said chuck and said can end bead interior surface. 41. The method according to claim 32, further comprising the step of filling the can body with a carbonated beverage prior to performing said seaming operation.42. The method according to claim 32, wherein said chuck further comprises a second chuck wall depending from said substantially cylindrical first chuck wall, said second chuck wall not being substantially cylindrical whereby said first and second chuck walls form a juncture therebetween, and wherein the step of bringing said chuck into engagement with said can end comprises bringing said chuck wall juncture into engagement with said can end wall proximate said second location on said can end wall.43. The method according to claim 42, wherein said bending of said first wall portion during said seaming operation comprises bending said first wall portion upwardly around said chuck wall juncture.44. The method according to claim 42, wherein said end includes an annular reinforcing bead extending from said second wall portion and, in said step e) of performing the seaming operation, rotation of said can end is achieved without imparting driving contact between said chuck and a bottom interior surface of said reinforcing bead.45. The method according to claim 32, wherein the can end includes a reinforcing bead extending radially inward from said lowermost point of said second portion of the wall.46. The method according to claim 32, wherein said wall of said can end is substantially frustoconical prior to performing said seaming operation.47. The method according to claim 32, wherein said first and second portions of said wall of said can end lie along a substantially straight line prior to performing said seaming operation.48. The method according to claim 32, wherein after said seaming operation said first and second portions of said can end wall intersect at an obtuse angle.49. The method according to claim 32, wherein said chuck further comprises a second chuck wall depending from said substantially cylindrical first chuck wall, said second chuck wall being substantially frustoconical.50. A method of forming a double seam between a can body and a can end intended for use in packaging a carbonated beverage, said method comprising the steps of:a) providing a can end having (i) a circumferentially extending peripheral cover hook, said peripheral cover hook comprising a seaming panel to be formed into a portion of said double seam during a seaming operation, (ii) an annular reinforcing bead, and (iii) a circumferentially extending wall extending from said seaming panel to said reinforcing bead, said wall and said reinforcing bead forming a transition therebetween; b) placing said cover hook of said can end into contact with a circumferentially extending flange of a can body; c) providing a rotatable chuck comprising first and second circumferentially extending walls, said second chuck wall depending from said first chuck wall so as to form a juncture therebetween; d) bringing said chuck into engagement with said can end; and e) performing said seaming operation by placing one or more seaming rolls into contact with said peripheral cover hook of said can end while said can end rotates so as to deform said seaming panel of said cover hook and to bend a portion of said can end wall upwardly around said juncture of said chuck walls at a first location on said can end wall, a straight line extending from said first location on said can end wall to said transition between said can end wall and said reinforcing bead inclined between about 20° and about 60° with respect to said axial centerline both before and after said seaming operation. 51. The method according to claim 50 wherein at least a portion of said portion of said can end wall bent upwardly during said seaming operation is bent upward through an angle of at least about 16°.52. The method according to claim 50, wherein said line extending from said first location to said transition is inclined between about 30° and about 50° with respect to said axial centerline of said can end both before and after performing said seaming operation.53. The method according to claim 52, wherein at least a portion of said portion of said can end wall bent upwardly during said seaming operation is bent upward through an angle of at least about 26°.54. The method according to claim 50, wherein said line extending from said first location to said transition is inclined between about 40° and about 45° with respect to said axial centerline of said can end both before and after performing said seaming operation.55. The method according to claim 54, wherein at least a portion of said portion of said can end wall bent upwardly during said seaming operation is bent upward through an angle of at least about 36°.56. The method according to claim 50, wherein at least a portion of said portion of said can end wall bent upwardly during said seaming operation is bent upward into a substantially cylindrical configuration.57. The method according to claim 50, wherein said wall of said can end is substantially frustoconical prior to performing said seaming operation.58. The method according to claim 50, wherein said first wall of said chuck is oriented so as to be inclined with respect to an axial centerline of said chuck by no more than about 4°.59. The method according to claim 50, wherein said first wall of said chuck is substantially cylindrical.60. The method according to claim 59, wherein said said second chuck wall being substantially frustoconical.61. The method according to claim 50, wherein the distance from a lowermost point on said annular bead to the uppermost point on said cover hook defines a height of said can end, and said seaming operation increases said height of said can end.62. The method according to claim 50, whereinf) said annular bead has an interior surface thereof; g) said seaming operation comprises (i) performing a first seaming operation by placing a first seaming roll into contact with said can end curl while said can end is rotated so as to partially deform said cover hook and a first portion of said can end wall and said can body flange into a partial seam, and (ii) performing a second seaming operation by placing a second seaming roll into contact with said partially deformed can end cover hook so as to further deform said cover hook and said can end wall first portion and said can body flange so as to further form said seam; h) said rotation of said can end during said first seaming operation is accomplished without imparting driving contact between said chuck and said can end bead interior surface.
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