Patent US4452596A successfully refreshed from Google Patents.
US4452596A
Expired / Lapsed
US
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Apparatus for making cup of surface protected paperboard
Assignee: Michael Hoerauf Maschinenfabrik GmbH and Co KG
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Filing: 1982-09-21
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Granted: 1984-06-05
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Expires: 2002-09-21
Abstract
Abstract A paper cup of surface-protected paperboard and an apparatus for making the same, with the paper cup including a wound cup wall and a cup bottom inserted therein. Ends of a wall blank forming the cup wall are overlapped after a winding of the wall blank, and an inner cutting edge is covered by a protective strip welded together with the cup wall. The protective strip is fashioned as a sealing strip in flat contact with the inner surface of the cup wall and is welded to the cup wall on both sides of the overlapping point. The apparatus includes a winding station wherein the wall blank is wrapped onto a winding mandrel and is welded together at the overlapping zone in a subsequent welding station. With further devices being provided for inserting a cup bottom in the thus manufactured cup wall. A positioning device for the sealing strip is associated with the winding mandrel with the positioning device lying in front or preceding the winding station.
Inventors
- 👤 Gerhard Clauss
- 👤 Berthold Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:35
CPC Classifications
B; B65; B65D; B65D3/00; B65D3/28; B31; B31F; B31F1/00; B31F1/0003; B31F1/0045; B31F1/0048; B31F1/0051; B31F1/0054; B65D3/02; B65D3/06; B31B; B31B2105/00; B31B2105/002; B31B2105/0022
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
112 words
An apparatus for producing a paper cup, the apparatus comprising at least one winding mandrel means for winding a wall blank into a wound cup shell having a seam formed by overlapping ends of the wall blank, means for sealing the wall blank in an interior of the cup in an area of the overlapping ends, and means for inserting a cup bottom into the cup shell, characterized in that means are provided for positioning a protective sealing strip on the at least one winding mandrel means prior to disposing the wall blank on the winding mandrel means so that a sealing of the overlapping ends is obtained by the sealing strip.
Claim 2
Independent Claim
112 words
An apparatus for producing a paper cup, the apparatus comprising at least one winding mandrel means for winding a wall blank into a wound cup shell having a seam formed by overlapping ends of the wall blank, means for sealing the wall blank in an interior of the cup in an area of the overlapping ends, and means for inserting a cup bottom into the cup shell, characterized in that means are provided for positioning a protective sealing strip on the at least one winding mandrel means prior to disposing the wall blank on the winding mandrel means so that a sealing of the overlapping ends is obtained by the sealing strip.
Claim 3
Dependent Claim
42 words
An apparatus according to claim 1, characterized in that a plurality of winding mandrel means are provided, means are provided for sequentially indexing the respective mandrel means between the positioning means, the winding means, the sealing means, and the bottom inserting means.
Claim 4
Independent Claim
140 words
An apparatus for producing a paper cup, the apparatus comprising at least one mandrel means for winding a wall blank into a wound cup shell having a seam formed by overlapping ends of the wall blank, means for sealing the wall blank in an interior of the cup in an area of the overlapping ends, and means for inserting a cup bottom into the cup shell, characterized in that means are provided for positioning a protective sealing strip on the at least one winding mandrel means prior to a winding of the wall blank, said positioning means includes a suction means, an arm means carrying the suction means, and means for pivotally mounting the arm means so that the suction means has a path of motion approximately tangential to an outer peripheral surface of the at least one mandrel means.
Claim 5
Independent Claim
140 words
An apparatus for producing a paper cup, the apparatus comprising at least one mandrel means for winding a wall blank into a wound cup shell having a seam formed by overlapping ends of the wall blank, means for sealing the wall blank in an interior of the cup in an area of the overlapping ends, and means for inserting a cup bottom into the cup shell, characterized in that means are provided for positioning a protective sealing strip on the at least one winding mandrel means prior to a winding of the wall blank, said positioning means includes a suction means, an arm means carrying the suction means, and means for pivotally mounting the arm means so that the suction means has a path of motion approximately tangential to an outer peripheral surface of the at least one mandrel means.
Claim 6
Dependent Claim
26 words
An apparatus according to claim 3, characterized in that means are provided in the at least one winding mandrel means for holding the sealing strip thereon.
Claim 7
Dependent Claim
59 words
An apparatus according to claim 4, characterized in that at least a portion of the at least one winding mandrel means is hollow, means are provided for communicating the hollow portion with a vaccum source, and in that the holding means includes a permeable wall portion provided in the outer peripheral surface of the at least one mandrel means.
Claim 8
Dependent Claim
31 words
An apparatus according to claim 5, characterized in that the permeable wall portion is provided with at least perforation communicating with the hollow portion of the at least one mandrel means.
Claim 9
Independent Claim
44 words
An apparatus according to one of claims 1, 3, 4, 5, or 6, characterized in that means are provided for sequentially indexing the at least one winding mandrel means between the positioning means, the winding means, the sealing means, and the bottom inserting means.
Claim 10
Dependent Claim
40 words
An apparatus according to claim 7, characterized in that the positioning means includes a means for accommodating a length of sheeting forming the protective strip, and means for severing a length of sheeting into protective sealing strips of predetermined lengths.
Claim 11
Dependent Claim
19 words
An apparatus according to claim 8, characterized in that the sealing means is a welding station for ultrasonic welding.
Claim 12
Independent Claim
171 words
An apparatus for producing a paper cup, the apparatus comprising a plurality of winding mandrel means for winding a wall blank into a wound cup shell having a seam formed by overlapping ends of the wall blank, means for sealing the wall blank in an interior of the cup in an area of the overlapping ends, and means for inserting a cup bottom into the cup shell, characterized in that means are provided for positioning a protective sealing strip on the respective winding mandrel means prior to a winding of the wall blank, said positioning means includes a suction means, and an arm means carrying the suction means, and means for pivotally mounting the arm means so that the suction means has a path of motion approximately tangential to an outer peripheral surface of a winding mandrel means disposed at the positioning means, and in that means are provided for sequentially indexing the respective mandrel means between the positioning means, the winding means, the sealing means, and the bottom inserting means.
Claim 13
Independent Claim
171 words
An apparatus for producing a paper cup, the apparatus comprising a plurality of winding mandrel means for winding a wall blank into a wound cup shell having a seam formed by overlapping ends of the wall blank, means for sealing the wall blank in an interior of the cup in an area of the overlapping ends, and means for inserting a cup bottom into the cup shell, characterized in that means are provided for positioning a protective sealing strip on the respective winding mandrel means prior to a winding of the wall blank, said positioning means includes a suction means, and an arm means carrying the suction means, and means for pivotally mounting the arm means so that the suction means has a path of motion approximately tangential to an outer peripheral surface of a winding mandrel means disposed at the positioning means, and in that means are provided for sequentially indexing the respective mandrel means between the positioning means, the winding means, the sealing means, and the bottom inserting means.
Claim 14
Dependent Claim
24 words
An apparatus according to claim 10, characterized in that means are provided in each of the mandrel means for holding a sealing strip thereon.
Claim 15
Dependent Claim
40 words
An apparatus according to claim 11, characterized in that the positioning means includes a means accommodating a length of sheeting forming the protective strip, and means for severing a length of sheeting into protective sealing strips of a predetermined length.
Claim 16
Dependent Claim
19 words
An apparatus according to claim 12, characterized in that the sealing means is a welding station for ultrasonic welding.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-05 | 1987-12-05 | 1988-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-05 | 1991-12-05 | 1992-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-05 | 1995-12-05 | 1996-06-05 | $7700.00 | Window Closed / Lapsed |