US2740202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for drying sheet material
Assignee: Ultrasonic Corp
•
Filing: 1952-06-07
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Granted: 1956-04-03
•
Expires: 1972-06-07
Abstract
No abstract record available.
Inventors
- 👤 Arthur A Fowle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:34
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/24; D; D21; D21F; D21F13/00; F26B5/00; F26B5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
THE METHOD OF REMOVING FROM A WEB LIQUID WHICH IS SUPERFICALLY ADHERENT TO THE SURFACE THEREOF, WHICH METHOD COMPRISES CAUSING THE WEB TO TRAVEL LONGITUDINALLY BETWEN SURFACES CLOSELY OPPOSING ITS FACES TO DEFINE A RESTRICTED PASSAGEWAY, SUPPORTING THE WEB AT SPACED POINTS TO PROVIDE WITHIN SAID PASSAGEWAY AND EXTENDED PORTION CAPABLE OF MEMBRANE-LIKE VIBRATION, IMPINGING SOUND WAVES IN THE RANGE OF FROM 1,000 TO 3,000 C. P. S. ON THE SO EXTENDED PORTION TO IMPART THERETO VIBRATIONS TRANSVERSE TO ITS PLANE AND EFFECT DETACHMENT OF LIQUID DROPLETS THEREFROM AND CARRYING AWAY THE DETACHED DROPLETS BY A CURRENT OF AIR DIRECTED THROUGH SAID PASSAGEWAY OVER THE SURFACE OF SAID PORTION SUBSTANTIALLY PARALLEL TO ITS PLANE.
Claim 2
Independent Claim
114 words
THE METHOD OF REMOVING FROM A WEB LIQUID WHICH IS SUPERFICALLY ADHERENT TO THE SURFACE THEREOF, WHICH METHOD COMPRISES CAUSING THE WEB TO TRAVEL LONGITUDINALLY BETWEN SURFACES CLOSELY OPPOSING ITS FACES TO DEFINE A RESTRICTED PASSAGEWAY, SUPPORTING THE WEB AT SPACED POINTS TO PROVIDE WITHIN SAID PASSAGEWAY AND EXTENDED PORTION CAPABLE OF MEMBRANE-LIKE VIBRATION, IMPINGING SOUND WAVES IN THE RANGE OF FROM 1,000 TO 3,000 C. P. S. ON THE SO EXTENDED PORTION TO IMPART THERETO VIBRATIONS TRANSVERSE TO ITS PLANE AND EFFECT DETACHMENT OF LIQUID DROPLETS THEREFROM AND CARRYING AWAY THE DETACHED DROPLETS BY A CURRENT OF AIR DIRECTED THROUGH SAID PASSAGEWAY OVER THE SURFACE OF SAID PORTION SUBSTANTIALLY PARALLEL TO ITS PLANE.
References Cited (Backward Citations)
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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) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |