Patent US3149026A successfully refreshed from Google Patents.
US3149026A
Expired / Lapsed
US
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Air assisted formation method and apparatus
Assignee: Beloit Iron Works Inc
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Filing: 1961-09-26
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Granted: 1964-09-15
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Expires: 1981-09-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Lloyd Hornbostel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:19
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/48; D21F1/52; D21F1/009; D21F1/18; D21F1/20; F; F24; F24F; F24F6/00; F24F6/02; F24F6/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
65 words
THE METHOD OF IMPROVING WEB FORMATION FROM PAPER STOCK DEPOSITED ON A FORAMINOUS MOVING SURFACE SUBJECTED TO A PRESSURE DIFFERENTIAL THEREACROSS FOR REMOVING WATER DOWNWARDLY THROUGH THE SURFACE, WHICH COMPRISES DIRECTING DISCRETE STREAMS OF AIR BENEATH SAID FORMING SURFACE ACROSS THE WIDTH OF THE FORMING SURFACE TENDING TO RAISE THE LAYER OF STOCK AT THE LOCATIONS OF THE STREAMS WITHOUT PENETRATING THE LAYER OF STOCK.
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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |