US3070901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guiding air-borne webs
Assignee: Svenska Flaktfabriken AB
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Filing: 1960-02-16
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Granted: 1963-01-01
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Expires: 1980-02-16
Abstract
No abstract record available.
Inventors
- 👤 Allander Claes
- 👤 Wallin Sven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:09
CPC Classifications
F; F26; F26B; F26B21/00; F26B21/50; D; D21; D21F; D21F5/00; F26B13/00; F26B13/10; F26B13/101; F26B13/104; F26B21/55
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
APPARATUS FOR SUPPORTING AND CONVEYING WEBS BY A GASEOUS MEDIUM, COMPRISING IN COMBINATION, SEPARATE GAS SUPPLY SYSTEMS FOR THE OPPOSITE SURFACES RESPECTIVELY OF THE WEB, THE ONE GAS SUPPLY SYSTEM FOR ONE SURFACE OF THE WEB INCLUDING MEANS FOR DISCHARGING GASEOUS MEDIUM LONGITUDINALLY OF THE DIRECTION OF MOVEMENT OF THE WEB AT SPACED POINTS THEREACROSS AND THEREALONG, AND THE OTHER GAS SUPPLY SYSTEM FOR THE OTHER SURFACE OF THE WEB INCLUDING MEANS FOR DISCHARGING GASEOUS MEDIUM TRANSVERSELY OF THE DIRECTION OF MOVEMENT OF THE WEB AT SPACED POINTS THEREACROSS AND THEREALONG, SAID OTHER GAS SUPPLY SYSTEM INCLUDING ALTERNATE BOXES ALONG THE LENGTH OF THE WEB, EACH SAID BOX HAVING SEPARATE MEANS FOR SUPPLYING IT WITH GASEOUS MEDIUM, SAID BOXES BEING ARRANGED FOR THE SUPPLY OF GAS IN ALTERNATION RESPECTIVELY FROM OPPOSITE SIDE EDGES OF THE WEB, SAID GAS SUPPLY MEANS FOR EACH BOX INCLUDING A FAN HAVING ITS PROPELLER AXIS ALIGNED WITH THE DIRECTION OF FLOW OF GASEOUS MEDIUM ACROSS SAID WEB, AND THE DIRECTION OF ROTATION OF THE FAN PROPELLERS AS VIEWED FROM BEHING THE FAN AND DOWN THE DIRECTION OF FLOW BEING OPPOSITE FOR THE ALTERNATE BOXES FOR OPPOSITE SIDE EDGES OF THE WEB.
Claim 2
Dependent Claim
196 words
APPARATUS FOR SUPPORTING AND CONVEYING WEBS BY A GASEOUS MEDIUM, COMPRISING IN COMBINATION, SEPARATE GAS SUPPLY SYSTEMS FOR THE OPPOSITE SURFACES RESPECTIVELY OF THE WEB, THE ONE GAS SUPPLY SYSTEM FOR ONE SURFACE OF THE WEB INCLUDING MEANS FOR DISCHARGING GASEOUS MEDIUM LONGITUDINALLY OF THE DIRECTION OF MOVEMENT OF THE WEB AT SPACED POINTS THEREACROSS AND THEREALONG, AND THE OTHER GAS SUPPLY SYSTEM FOR THE OTHER SURFACE OF THE WEB INCLUDING MEANS FOR DISCHARGING GASEOUS MEDIUM TRANSVERSELY OF THE DIRECTION OF MOVEMENT OF THE WEB AT SPACED POINTS THEREACROSS AND THEREALONG, SAID OTHER GAS SUPPLY SYSTEM INCLUDING ALTERNATE BOXES ALONG THE LENGTH OF THE WEB, EACH SAID BOX HAVING SEPARATE MEANS FOR SUPPLYING IT WITH GASEOUS MEDIUM, SAID BOXES BEING ARRANGED FOR THE SUPPLY OF GAS IN ALTERNATION RESPECTIVELY FROM OPPOSITE SIDE EDGES OF THE WEB, SAID GAS SUPPLY MEANS FOR EACH BOX INCLUDING A FAN HAVING ITS PROPELLER AXIS ALIGNED WITH THE DIRECTION OF FLOW OF GASEOUS MEDIUM ACROSS SAID WEB, AND THE DIRECTION OF ROTATION OF THE FAN PROPELLERS AS VIEWED FROM BEHING THE FAN AND DOWN THE DIRECTION OF FLOW BEING OPPOSITE FOR THE ALTERNATE BOXES FOR OPPOSITE SIDE EDGES OF THE WEB.
References Cited (Backward Citations)
US2229285A
Cited
US2351549A
Cited
CH297422A
Cited
US2772486A
Cited
US2848820A
Cited
FR1121824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |