Patent US3604320A successfully refreshed from Google Patents.
US3604320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for assembling tube and end panel
Assignee: ROCK-TENN COMPANY A CORP OF
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Filing: 1969-09-17
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Granted: 1971-09-14
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Expires: 1989-09-17
Abstract
Abstract Novel assembly means adapted to produce a unique package particularly suited for use in conjunction with asphalt wherein a fiber bottom is sealed to a fiber tube by means of a heat and pressure sensitive adhesive. The assembly means includes three mandrels mounted on a revolving spider and a heated sealing platen. In operation, a cylindrical paper tube is placed over one of the mandrels so that its upper edge extends beyond the upper end of the mandrel. The paper tube includes approximately a oneinch strip of heat and pressure sensitive adhesive which has been coated around the inner periphery of its upper edge. A paper bottom is positioned within the upper end of the paper tube and rests against the upper end of the mandrel. Once loaded, the mandrel is rotated into a sealing position where the heated sealing platen cooperates with the mandrel to crimp the adhesive coated end of the paper tube into sealed engagement with the paper bottom. The mandrel is then revolved to a third position where the sealed package is removed from the assembly means.
Inventors
- 👤 Alvin C Duvall
- 👤 James C Jones
- 👤 George R Kramp
- 👤 James L Swickard Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:43
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/56; B29C65/567; B29C65/568; B29C65/78; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/12; B29C66/122; B29C66/1222; B29C66/1224; B29C66/20; B29C66/24; B29C66/242; B29C66/2422; B29C66/24221; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/5346; B29C66/53461; B29C66/61; B29C66/80; B29C66/81; B29C66/814; B29C66/8145; B29C66/81457; B29C66/816; B29C66/8161; B29C66/82; B29C66/824; B29C66/8242; B29C66/83; B29C66/832; B29C66/8322; B65; B65D; B65D3/00; B65D3/10; B65D3/12; B31; B31B; B31B2105/00; B31B2105/002; B31B2105/0022
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
175 words
Apparatus for assembling a cylindrical fiber tube and a circular fiber end panel into a container comprising mandrel means adapted to telescopingly support a tube and to support and position an end panel within and spaced from one end of said tube with a marginal portion of said tube extending beyond said end panel, said marginal portion of said tube having a coating of heat and pressure sensitive adhesive around its inner periphery, heated platen means positioned in facing relation to said end panel, means connected to said platen for moving said platen into engagement with said marginal portion of said tube to apply deforming pressure and heat to said marginal portion to compress it into sealed engagement with said end panel, and said mandrel means including an expandable head adapted to expand radially outward against said fiber tube to maintain the cylindrical configuration of said fiber tube under the force of said heated platen when said heated platen is moved into engagement with said marginal portion of said fiber tube and said end panel.
Claim 2
Dependent Claim
175 words
Apparatus for assembling a cylindrical fiber tube and a circular fiber end panel into a container comprising mandrel means adapted to telescopingly support a tube and to support and position an end panel within and spaced from one end of said tube with a marginal portion of said tube extending beyond said end panel, said marginal portion of said tube having a coating of heat and pressure sensitive adhesive around its inner periphery, heated platen means positioned in facing relation to said end panel, means connected to said platen for moving said platen into engagement with said marginal portion of said tube to apply deforming pressure and heat to said marginal portion to compress it into sealed engagement with said end panel, and said mandrel means including an expandable head adapted to expand radially outward against said fiber tube to maintain the cylindrical configuration of said fiber tube under the force of said heated platen when said heated platen is moved into engagement with said marginal portion of said fiber tube and said end panel.
Claim 3
Dependent Claim
263 words
Apparatus for assembling a cylindrical fiber tube and a circular fiber end panel into a container comprising mandrel means adapted to telescopingly support a tube and to support and position an end panel within and spaced from one end of said tube with a marginal portion of said tube extending beyond said end panel, said marginal portion of said tube having a coating of heat and pressure sensitive adhesive around its inner periphery, heated platen means positioned in facing relation to said end panel, means connected to said platen for moving said platen into engagement with said marginal portion of said tube to apply deforming pressure and heat to said marginal portion to compress it into sealed engagement with said end panel, said mandrel means including an expandable head adapted to expand radially outward against said fiber tube to maintain the cylindrical configuration of said fiber tube under the force of said heated platen when said heated platen is moved into engagement with said marginal portion of said fiber tube and said end panel, and said expandable head comprising a pair of tapered platen, a plurality of wedge-shaped expansion shoes positioned in the tapered space between said plates and adapted to be moved radially outward into engagement with the fiber tube when said tapered plates are urged together under the force of the heated sealing platen, a garter spring circumferentially surrounding the expansion shoes and biasing them into engagement with said plates, and a plurality of stop screws adjustable to control the amount of movement of thE tapered plates and the expansion shoes.
Claim 4
Dependent Claim
263 words
Apparatus for assembling a cylindrical fiber tube and a circular fiber end panel into a container comprising mandrel means adapted to telescopingly support a tube and to support and position an end panel within and spaced from one end of said tube with a marginal portion of said tube extending beyond said end panel, said marginal portion of said tube having a coating of heat and pressure sensitive adhesive around its inner periphery, heated platen means positioned in facing relation to said end panel, means connected to said platen for moving said platen into engagement with said marginal portion of said tube to apply deforming pressure and heat to said marginal portion to compress it into sealed engagement with said end panel, said mandrel means including an expandable head adapted to expand radially outward against said fiber tube to maintain the cylindrical configuration of said fiber tube under the force of said heated platen when said heated platen is moved into engagement with said marginal portion of said fiber tube and said end panel, and said expandable head comprising a pair of tapered platen, a plurality of wedge-shaped expansion shoes positioned in the tapered space between said plates and adapted to be moved radially outward into engagement with the fiber tube when said tapered plates are urged together under the force of the heated sealing platen, a garter spring circumferentially surrounding the expansion shoes and biasing them into engagement with said plates, and a plurality of stop screws adjustable to control the amount of movement of thE tapered plates and the expansion shoes.
Claim 5
Dependent Claim
37 words
Apparatus as set forth in claim 2 wherein said heated platen means includes a forming pressure ring with a tapered interior periphery adapted to fold said marginal portion of said tube into sealing engagement with said panel.
Claim 6
Dependent Claim
33 words
Apparatus as set forth in claim 3 wherein said heated platen means further includes a calrod heating device adjacent to said forming pressure ring adapted to supply heat to said forming pressure ring.
Claim 7
Dependent Claim
36 words
Apparatus as set forth in claim 4 wherein said heated platen means further includes an outwardly biased end panel engaging retractable means for engaging said end panel prior to the engagement of said forming pressure ring.
Claim 8
Dependent Claim
235 words
A three station full overlap cycle forming machine for assembling a cylindrical fiber tube and a circular fiber end panel into a container comprising a first mandrel positioned to telescopingly support a fiber tube and to support and position an end panel within and spaced from one end of said tube with a marginal portion of said tube extending beyond said end panel, said marginal portion of said tube having a coating of heat and pressure sensitive adhesive around its inner periphery, a second mandrel, container forming means overlying said second mandrel and adapted to be moved into engagement with said marginal portion of said tube to apply deforming pressure and heat to said marginal portion to compress it into sealed engagement with said end panel, a third mandrel, container removal means positioned adjacent said third mandrel and adapted to remove a sealed container from said forming machine, means for supporting said first, second, and third mandrels equidistant from each other, means connected to said mandrel supporting means adapted to index said mandrels between said three stations, and each of said first, second, and third mandrels including an expandable head adapted to expand radially outward against said fiber tube to maintain the cylindrical configuration of said fiber tube under the force of said heated platen when said heated platen is moved into engagement with said marginal portions of said fiber tube and said end panel.
Claim 9
Dependent Claim
235 words
A three station full overlap cycle forming machine for assembling a cylindrical fiber tube and a circular fiber end panel into a container comprising a first mandrel positioned to telescopingly support a fiber tube and to support and position an end panel within and spaced from one end of said tube with a marginal portion of said tube extending beyond said end panel, said marginal portion of said tube having a coating of heat and pressure sensitive adhesive around its inner periphery, a second mandrel, container forming means overlying said second mandrel and adapted to be moved into engagement with said marginal portion of said tube to apply deforming pressure and heat to said marginal portion to compress it into sealed engagement with said end panel, a third mandrel, container removal means positioned adjacent said third mandrel and adapted to remove a sealed container from said forming machine, means for supporting said first, second, and third mandrels equidistant from each other, means connected to said mandrel supporting means adapted to index said mandrels between said three stations, and each of said first, second, and third mandrels including an expandable head adapted to expand radially outward against said fiber tube to maintain the cylindrical configuration of said fiber tube under the force of said heated platen when said heated platen is moved into engagement with said marginal portions of said fiber tube and said end panel.
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) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |