Patent US3559301A successfully refreshed from Google Patents.
US3559301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air flotation system for conveying web materials
Assignee: Egan Machinery Co
•
Filing: 1968-07-29
•
Granted: 1971-02-02
•
Expires: 1988-07-29
Abstract
Abstract A COATED OR IMPREGNATED WEB OF FLEXIBLE MATERIAL IS CONVEYED OR SUBJECTED TO DESIRED TREATMENT, SUCH AS DRYING, DURING MOVEMENT THROUGH A HOUSING IN WHICH THE WEB IS SUPPORTED AND GUIDED IN FLOATING CONDITION BY SUPPORT MEANS USING A GASEOUS MEDIUM AND IS MAINTAINED OUT OF CONTACT WITH DEVICES WITHIN THE HOUSING. THE SUPPORT MEANS COMPRISES A PLURALITY OF SPACED, NOVEL, SUPPORT NOZZLES THAT ARE POSITIONED AKJACENT AND ACROSS ONE SIDE OF THE WEB AND THAT ARE SO CONSTRUCTED AS TO UTILIZE THE BERNOULLI THEOREM AS APPLIED TO GASES AND THE "COANDA EFFECT" DURING OPERATION. D R A W I N G
Inventors
- 👤 William A R Fraser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:13
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/10; F26B13/101; F26B13/104; B; B21; B21C; B21C47/00; B21C47/34; B21C47/3466; B21C47/3475; B65; B65H; B65H23/00; B65H23/04; B65H23/24; D; D21; D21F; D21F5/00; B65H2406/00; B65H2406/10; B65H2406/11; B65H2406/112
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |