Patent US3123974A successfully refreshed from Google Patents.
US2828675A
Expired / Lapsed
US
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Method and apparatus for continuously forming a fibrous web from a liquid suspension and progressively removing liquid therefrom
Assignee: Individual
•
Filing: 1956-02-21
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Granted: 1958-04-01
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Expires: 1976-02-21
Abstract
No abstract record available.
Inventors
- 👤 Stewart E Seaman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:19
CPC Classifications
D; D21; D21F; D21F9/00; D21F3/00; D21F3/02; D21F3/04; Y; Y10; Y10S; Y10S162/00; Y10S162/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
AN APPARATUS FOR FORMING A WEB OF FIBROUS MATERIAL, COMPRISING AN INCLINED PERFORATE STATIONARY PLATE HAVING A SMOOTH SURFACE AND ADAPTED TO HAVE FIBER SUSPENSION STOCK WHICH IS DELIVERED TO ITS TOP ENF FLOW DOWN ITS SAID SURFACE BY GRAVITY AND PLURALITY DRAIN THE LIQUID THEREFROM ANS ALLOW FIBERS IN SUSPENSION TO MAT THE BOTTOM A TRAVELLING FOAMINOUS CONVEYOR SIDSPOSED AT THE BOTTOM OF THE PLATE IN POSITION TO RECEIVE THE WEB THEREFORM, AND PRESS ROLLS POSITIONED TO RECEIVE THE WEB FROM THE CONVEYOR INTO THEIR BITE, THE BOTTOM ROLL BEING HOLLOW AND FORMED OF A PLURALITY OD SPACED RINGS.
Claim 2
Independent Claim
100 words
AN APPARATUS FOR FORMING A WEB OF FIBROUS MATERIAL, COMPRISING AN INCLINED PERFORATE STATIONARY PLATE HAVING A SMOOTH SURFACE AND ADAPTED TO HAVE FIBER SUSPENSION STOCK WHICH IS DELIVERED TO ITS TOP ENF FLOW DOWN ITS SAID SURFACE BY GRAVITY AND PLURALITY DRAIN THE LIQUID THEREFROM ANS ALLOW FIBERS IN SUSPENSION TO MAT THE BOTTOM A TRAVELLING FOAMINOUS CONVEYOR SIDSPOSED AT THE BOTTOM OF THE PLATE IN POSITION TO RECEIVE THE WEB THEREFORM, AND PRESS ROLLS POSITIONED TO RECEIVE THE WEB FROM THE CONVEYOR INTO THEIR BITE, THE BOTTOM ROLL BEING HOLLOW AND FORMED OF A PLURALITY OD SPACED RINGS.
References Cited (Backward Citations)
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US1503605A
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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) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |