US3290795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Web turning device
Assignee: Svenska Flaktfabriken AB
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Filing: 1964-03-18
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Granted: 1966-12-13
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Expires: 1984-03-18
Abstract
No abstract record available.
Inventors
- 👤 Jarreby Bertil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:13
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/10; F26B13/14; F26B13/16; B; B65; B65H; B65H23/00; B65H23/04; B65H23/24; B65H23/32; B65H27/00; D; D21; D21F; D21F1/00; D21F1/36; D21F5/00; D21G; D21G9/00; F26B13/101; F26B13/104; B65H2404/00; B65H2404/10; B65H2404/13; B65H2404/136; B65H2404/1363; B65H2404/18; B65H2404/181; B65H2406/00; B65H2406/10; B65H2406/11; B65H2406/111
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
A TURNING DEVICE FOR WEB-LIKE MATERIAL, COMPRISING IN COMBINATION A FORAMINOUS ROTATABLE, HOLLOW CYLINDER HAVING AT LEAST ONE SPINDLE SUPPORTING SAID CYLINDER, A TUBE MOUNTED WITHIN SAID CYLINDER AND SPACED FROM THE INNER SURFACE OF SAID CYLINDER SO AS TO DEFINE A LONGITUDINAL SPACE EXTENDING THEREBETWEEN, AT LEAST ONE ANNULAR WALL CIRCUMSCRIBING SAID TUBE AND CONNECTING SAID TUBE TO THE INNER SURFACE OF SAID CYLINDER SO AS TO DIVIDE SAID SPACE LONGITUDINALLY INTO A FIRST AND A SECOND CHAMBER, SAID CYLINDER SURFACE ASSOCIATED WITH SAID FIRST CHAMBER HAVING A PLURALITY OF MEANS EACH DEFINING AN OPENING SAID CYLINDER SURFACE ASSOCIATED WITH SAID SEOND CHAMBER HAVING A PLURALITY OF HOLES THEREIN, SAID OPENINGS POSITIONED TO CAUSE A FLOW OF A MEDIUM THERETHROUGH IN A DIRECTION SUBSTANTIALLY TANGENTIAL TO THE SURFACE OF SAID CYLINDER AND IN A DIRECTION COINCIDENT WITH THE DIRECTION OF INTENDED MOTION OF SAID CYLINDER, SAID TUBE HAVING A PLURALITY OF SLOTS CONFINED TO THE PORTION OF SAID TUBE ASSOCIATED WITH SAID SECOND CHAMBER, MEANS FOR SUPPLYING A LOW PRESSURE GASEOUS MEDIUM INTO SAID TUBE THROUGH SAID SLOTS, AND MEANS FOR SUPPLYING A HIGHER PRESSURE MEDIUM TO SAID FIRST CHAMBER.
Claim 2
Dependent Claim
191 words
A TURNING DEVICE FOR WEB-LIKE MATERIAL, COMPRISING IN COMBINATION A FORAMINOUS ROTATABLE, HOLLOW CYLINDER HAVING AT LEAST ONE SPINDLE SUPPORTING SAID CYLINDER, A TUBE MOUNTED WITHIN SAID CYLINDER AND SPACED FROM THE INNER SURFACE OF SAID CYLINDER SO AS TO DEFINE A LONGITUDINAL SPACE EXTENDING THEREBETWEEN, AT LEAST ONE ANNULAR WALL CIRCUMSCRIBING SAID TUBE AND CONNECTING SAID TUBE TO THE INNER SURFACE OF SAID CYLINDER SO AS TO DIVIDE SAID SPACE LONGITUDINALLY INTO A FIRST AND A SECOND CHAMBER, SAID CYLINDER SURFACE ASSOCIATED WITH SAID FIRST CHAMBER HAVING A PLURALITY OF MEANS EACH DEFINING AN OPENING SAID CYLINDER SURFACE ASSOCIATED WITH SAID SEOND CHAMBER HAVING A PLURALITY OF HOLES THEREIN, SAID OPENINGS POSITIONED TO CAUSE A FLOW OF A MEDIUM THERETHROUGH IN A DIRECTION SUBSTANTIALLY TANGENTIAL TO THE SURFACE OF SAID CYLINDER AND IN A DIRECTION COINCIDENT WITH THE DIRECTION OF INTENDED MOTION OF SAID CYLINDER, SAID TUBE HAVING A PLURALITY OF SLOTS CONFINED TO THE PORTION OF SAID TUBE ASSOCIATED WITH SAID SECOND CHAMBER, MEANS FOR SUPPLYING A LOW PRESSURE GASEOUS MEDIUM INTO SAID TUBE THROUGH SAID SLOTS, AND MEANS FOR SUPPLYING A HIGHER PRESSURE MEDIUM TO SAID FIRST CHAMBER.
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |