US3868893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing composite containers
Assignee: PATENT DEVELOPMENTS INTERNATIONAL Ltd
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Filing: 1973-10-10
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Granted: 1975-03-04
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Expires: 1993-10-10
Abstract
Abstract Apparatus to produce a composite container from a blank defining a base panel from each of opposite sides of which projects a side panel, the apparatus having a split cavity tool, a core tool and a guideway to position a blank between the tools when they are open, closure of the tools driving the base panel toward the cavity tool and thereby initiating folding of the side panels relative to the base panel.
Inventors
- 👤 Brian Leo Chudleigh Sutch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:04
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/18; B29; B29C; B29C45/00; B29C45/14; B29C45/14008; B29C45/14467; B29C45/14475; B31; B31B; B31B50/00; B31B50/26; B31B50/44; B31B50/46; B31B50/60; B31B50/61
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
265 words
Apparatus for producing a composite container from a blank comprising an end wall panel and side wall panels each of which projects from the end wall panel, the apparatus comprising a cavity tool having a cavity therein including side walls, a core tool movable relative to the cavity tool between an open and a closed condition, the cavity tool comprising cavity tool parts themselves slidably movable along said side walls between an open condition and a closed condition in the latter of which and with the core tool and the cavity tool in the closed condition a cavity is defined which corresponds to the shape of the container to be produced, a blank guide for receiving a blank and positioning the blank in the open condition of the core tool and the cavity tool between those tools and spaced therefrom and with the end wall panel in the path of relative movement of the core tool, relative movement of the core tool anD the cavity tool in the closing direction, with a blank positioned by the guide therebetween, being operative to drive the end wall panel of the blank relative to the side wall panels and to the guide toward the cavity tool and to cause the core tool to move the cavity tool parts towards their closed condition, means being provided to inject material into vacant parts of the cavity defined by the core tool and the cavity tool in the closed condition to seam edges of the blank juxtaposed by relative movement of the core tool and cavity tool during relative closing movement.
Claim 2
Dependent Claim
265 words
Apparatus for producing a composite container from a blank comprising an end wall panel and side wall panels each of which projects from the end wall panel, the apparatus comprising a cavity tool having a cavity therein including side walls, a core tool movable relative to the cavity tool between an open and a closed condition, the cavity tool comprising cavity tool parts themselves slidably movable along said side walls between an open condition and a closed condition in the latter of which and with the core tool and the cavity tool in the closed condition a cavity is defined which corresponds to the shape of the container to be produced, a blank guide for receiving a blank and positioning the blank in the open condition of the core tool and the cavity tool between those tools and spaced therefrom and with the end wall panel in the path of relative movement of the core tool, relative movement of the core tool anD the cavity tool in the closing direction, with a blank positioned by the guide therebetween, being operative to drive the end wall panel of the blank relative to the side wall panels and to the guide toward the cavity tool and to cause the core tool to move the cavity tool parts towards their closed condition, means being provided to inject material into vacant parts of the cavity defined by the core tool and the cavity tool in the closed condition to seam edges of the blank juxtaposed by relative movement of the core tool and cavity tool during relative closing movement.
Claim 3
Dependent Claim
46 words
Apparatus according to claim 1, in which the core tool completes relative movement of a blank along the line of relative movement of the core tool and the cavity tool before the cavity tool parts begin their relative movement toward one another to their closed condition.
Claim 4
Dependent Claim
31 words
Apparatus according to claim 2, in which the cavity tool includes a base having surfaces which diverge toward the core tool, the cavity tool parts being slidable along the diverging surfaces.
Claim 5
Dependent Claim
29 words
Apparatus according to claim 1, in which the guide comprises a pair of rails displaceable in the direction of relative movement of the core tool and the cavity tool.
Claim 6
Dependent Claim
66 words
Apparatus according to claim 4, in which the core tool includes stripper means movable relative to the core tool in the direction of relative movement of the core tool and the cavity tool which stripper means engage the cavity tool parts as the core tool and cavity tool move toward the closed condition to drive the cavity tool parts toward the closed condition of those parts.
Claim 7
Dependent Claim
36 words
Apparatus according to claim 5, in which the stripper means include a stripper plate carrying a stripper ring, the plate engaging the rails during the relative closing movement of the core tool and the cavity tool.
Claim 8
Dependent Claim
79 words
Apparatus according to claim 6 in which the stripper plate is movable relative to and is biased toward a support plate of the core tool, stop means being provided in the path of the stripper plate in the direction of relative opening of the core tool and cavity tool to arrest the stripper plate before the core tool reaches its opening limit position whereby the stripper plate is advanced relative to the core tool to strip a container therefrom.
Claim 9
Dependent Claim
32 words
Apparatus according to claim 7 in which the stripper means are located at or rearward of the extreme locus of the blank free edges as the blank folds on to the core.
Claim 10
Dependent Claim
69 words
Apparatus according to claim 1 in which the guide comprises a pair of rails which have opposed surfaces which are stepped to provide first larger spacing therebetween in the direction of blank gravity feed to position a blank end wall panel opposite the core tool, a second reduced spacing in that part of the rail lengths occupied by the blank when so positioned, and a third further reduced spacing.
Claim 11
Dependent Claim
59 words
Apparatus according to claim 1 in which the guide comprises a pair of rails recessed on the opposed surfaces, the wall of each recess remote from the cavity tool parts being interrupted to allow a portion of blank to pass out of the recess as the end wall panel is advanced relative to the guide by the core tool.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |