US3352748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing webs of fibrous materials, in particular of paper and cardboard webs
Assignee: Individual
•
Filing: 1964-09-11
•
Granted: 1967-11-14
•
Expires: 1984-09-11
Abstract
No abstract record available.
Inventors
- 👤 Krofta Milos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:25
CPC Classifications
D; D21; D21F; D21F11/00; D21F11/06; D21F11/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
APPARATUS FOR PRODUCING WEBS OF FIBROUS MATERIALS, IN PARTICULAR OF PAPER AND CARDBOARD WEBS, COMPRISING A SUPPORT MEMBER, A HOLLOW METAL SCREEN CYLINDER ROTATABLY MOUNTED ON SAID SUPPORT MEMBER AND HAVING CYLINDRICAL IMPERFORATE END PORTIONS IN AN ECCENTRIC RELATIONSHIP WITH SAID CYLINDER, AN ENDLESS SCREEN BELT IN AN ARCUATE PATH OF AT LEAST 100* RELATIVE TO SAID SCREEN CYLINDER AND CONVERGING TO A NARROW GAP THEREBETWEEN AND MEANS FOR SUPPLYING FIBROUS MIXTURES TO SAID CYLINDER AND TO SAID SCREEN BELT RESPECTIVELY, SAID MEANS COMPRISING A PAIR OF SPACED CURVED CONVERGING CHANNEL MEMBERS, THE WALLS OF SAID CHANNEL MEMBERS FORMING A CHAMBER THEREBETWEEN FOR SUPPLYING GASEOUS PRESSURE MEDIUM, SAID CHAMBER EXTENDING AN ARCUATE PATH OF AT LEAST 66* BETWEEN THE CYLINDER AND THE SCREEN BELT AND HAVING AN OUTLET OPENING FOR GAS.
Claim 2
Dependent Claim
131 words
APPARATUS FOR PRODUCING WEBS OF FIBROUS MATERIALS, IN PARTICULAR OF PAPER AND CARDBOARD WEBS, COMPRISING A SUPPORT MEMBER, A HOLLOW METAL SCREEN CYLINDER ROTATABLY MOUNTED ON SAID SUPPORT MEMBER AND HAVING CYLINDRICAL IMPERFORATE END PORTIONS IN AN ECCENTRIC RELATIONSHIP WITH SAID CYLINDER, AN ENDLESS SCREEN BELT IN AN ARCUATE PATH OF AT LEAST 100* RELATIVE TO SAID SCREEN CYLINDER AND CONVERGING TO A NARROW GAP THEREBETWEEN AND MEANS FOR SUPPLYING FIBROUS MIXTURES TO SAID CYLINDER AND TO SAID SCREEN BELT RESPECTIVELY, SAID MEANS COMPRISING A PAIR OF SPACED CURVED CONVERGING CHANNEL MEMBERS, THE WALLS OF SAID CHANNEL MEMBERS FORMING A CHAMBER THEREBETWEEN FOR SUPPLYING GASEOUS PRESSURE MEDIUM, SAID CHAMBER EXTENDING AN ARCUATE PATH OF AT LEAST 66* BETWEEN THE CYLINDER AND THE SCREEN BELT AND HAVING AN OUTLET OPENING FOR GAS.
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |