Patent US4620896A successfully refreshed from Google Patents.
US4620896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single facer having two sets of corrugating rolls and a single pressure roll
Assignee: Rengo Co Ltd
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Filing: 1985-12-09
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Granted: 1986-11-04
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Expires: 2005-12-09
Abstract
Abstract A single facer comprising plural means for corrugating and pasting sheet medium and a pressure roll, characterized in that each pair of upper and lower corrugating rolls are capable of being moved so that the lower corrugating roll may be brought into contact with the pressure roll.
Inventors
- 👤 Hiroshi Sueki
- 👤 Kuniaki Yufu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:30
CPC Classifications
B; B31; B31F; B31F1/00; B31F1/20; B31F1/24; B31F1/26; B31F1/28; B31F1/2845; B31F1/2863; B31F1/2868; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1016; Y10T156/17; Y10T156/1798
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
122 words
A single facer comprising (a) plural means for corrugating and pasting sheet medium, said means each including an upper corrugating roll, a lower corrugating roll meshing with said upper corrugating roll to form a nip for receiving a sheet medium to corrugate the same and means for applying adhesive to the peaks of the flutes of the corrugated medium, and (b) a pressure roll, characterized in that said upper and lower corrugating rolls are capable of being moved so that the lower corrugating roll may be brought into contact with said pressure roll to push the corrugated medium, to which the adhesive has been applied, against a sheet linerboard extending around the pressure roll to bond the corrugated medium to the linerboard.
Claim 2
Dependent Claim
122 words
A single facer comprising (a) plural means for corrugating and pasting sheet medium, said means each including an upper corrugating roll, a lower corrugating roll meshing with said upper corrugating roll to form a nip for receiving a sheet medium to corrugate the same and means for applying adhesive to the peaks of the flutes of the corrugated medium, and (b) a pressure roll, characterized in that said upper and lower corrugating rolls are capable of being moved so that the lower corrugating roll may be brought into contact with said pressure roll to push the corrugated medium, to which the adhesive has been applied, against a sheet linerboard extending around the pressure roll to bond the corrugated medium to the linerboard.
Claim 3
Dependent Claim
24 words
A single facer as claimed in claim 1, wherein said upper and lower corrugating rolls are moved by means of a pair of air-cylinders.
Claim 4
Dependent Claim
21 words
A single facer as claimed in claim 1 or 2, wherein said means for applying adhesive are capable of being moved.
References Cited (Backward Citations)
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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) | 1989-11-03 | 1990-05-05 | 1990-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-03 | 1994-05-05 | 1994-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-03 | 1998-05-05 | 1998-11-04 | $7700.00 | Window Closed / Lapsed |