US3582467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two wire former
Assignee: Beloit Corp
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Filing: 1968-06-25
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Granted: 1971-06-01
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Expires: 1988-06-25
Abstract
Abstract THE INVENTION RELATES TO THE ART OF FORMING FIBROUS WEBS E.G., PAPER FROM DILUTE AQUEOUS FIBER SUSPENSIONS FED INTO A WEB FORMING ZONE DEFINED BY A PAIR OF OPPOSED POROUS FORMING BELTS OR "WIRES" DRIVEN INTO GRADUAL CONVERGENCE, IN A FORMING ZONE, BY (1) AN OPEN-FACED ROLL WRAPPED BY ONE OF THE BELTS AND (2) AN OPPOSED POROUS STATIONARY GUIDE WRAPPED BY THE OTHER OF THE BELTS AND URGING THE SAME INTO SUCH CONVERGENCE IN THE FORMING ZONE WITH THE ONE BELT, THE STATIONARY GUIDE PRESENTING A NON-CIRCULAR ACTIVE SURFACE DEFINED BY THE LONGITUDINAL CONTOUR OF A PLURALITY OF BELT-CONTACTING LONGITUDINALLY SPACED TRASVERSE EDGES.
Inventors
- 👤 David R Gustafson
- 👤 John F Schmaeng
- 👤 John S Finnila
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:50
CPC Classifications
D; D21; D21D; D21D5/00; D21D5/26; D21F; D21F9/00; D21F9/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |