Patent US4540658A successfully refreshed from Google Patents.
Patent US3397112A successfully refreshed from Google Patents.
US3397112A
Expired / Lapsed
US
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Cylinder papermaking machine containing a water impervious cylinder
Assignee: SRP New Thames Ltd
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Filing: 1964-04-30
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Granted: 1968-08-13
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Expires: 1984-04-30
Abstract
No abstract record available.
Inventors
- 👤 Highton Allan Peter
- 👤 Wheeldon John Brian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:14
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/28; C07C309/29; C07C309/30; C07C309/31; C07C1/00; C07C1/26; C07C1/30; D; D21; D21F; D21F9/00; D21F9/04; C07C2521/00; C07C2521/06; C07C2521/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
APPARATUS FOR MAKING A FIBROUS WEB, SUCH AS PAPER, IN A CONTINUOUS MANNER, COMPRISING A CYLINDER HAVING A LIQUID IMPERVIOUS SURFACE, ROTATABLE ABOUT A HORIZONTAL AXIS, AN ENDLESS, LIQUID PERVIOUS BAND ENTRAINED AROUND A PORTION OF THE CYLINDER SURFACE AND MOVABLE THEREWITH, AT LEAST ONE FELTED PRESS ROLLER ADJACENT THE CYLINDER SURFACE AT A LOCATION CIRCUMFERENTIALLY SPACED BEYOND SAID ENDLESS BAND IN THE DIRCTION OR ROTATION OF THE CYLINDER, MEANS FOR CONTINUOUSLY DEPOSITING FIBROUS STOCK BETWEEN THE BAND AND THE CYLINDER SURFACE WHEREBY IT IS CONFINED THEREBETWEEN, MEANS FOR EXTRACTING, THROUGH THE BAND, STOCK LIQUID FROM THE FIBROUS STOCK WHILST SO CONFINED THEREBY TO FORM A FIBROUS WEB AND MEANS FOR STRIPPING THE FIBROUS WEB FROM THE CYLINDER SURFACE AFTER PASSING THROUGH THE NIP OF THE CYLINDER AND AT LEAST ONE FELTED PRESS ROLLER.
Claim 2
Dependent Claim
134 words
APPARATUS FOR MAKING A FIBROUS WEB, SUCH AS PAPER, IN A CONTINUOUS MANNER, COMPRISING A CYLINDER HAVING A LIQUID IMPERVIOUS SURFACE, ROTATABLE ABOUT A HORIZONTAL AXIS, AN ENDLESS, LIQUID PERVIOUS BAND ENTRAINED AROUND A PORTION OF THE CYLINDER SURFACE AND MOVABLE THEREWITH, AT LEAST ONE FELTED PRESS ROLLER ADJACENT THE CYLINDER SURFACE AT A LOCATION CIRCUMFERENTIALLY SPACED BEYOND SAID ENDLESS BAND IN THE DIRCTION OR ROTATION OF THE CYLINDER, MEANS FOR CONTINUOUSLY DEPOSITING FIBROUS STOCK BETWEEN THE BAND AND THE CYLINDER SURFACE WHEREBY IT IS CONFINED THEREBETWEEN, MEANS FOR EXTRACTING, THROUGH THE BAND, STOCK LIQUID FROM THE FIBROUS STOCK WHILST SO CONFINED THEREBY TO FORM A FIBROUS WEB AND MEANS FOR STRIPPING THE FIBROUS WEB FROM THE CYLINDER SURFACE AFTER PASSING THROUGH THE NIP OF THE CYLINDER AND AT LEAST ONE FELTED PRESS ROLLER.
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) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |