US3610000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal means
Assignee: Joh Kleinewefers Soehne KG
•
Filing: 1970-07-29
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Granted: 1971-10-05
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Expires: 1990-07-29
Abstract
Abstract AN IMPROVEMENT FOR SEALING DEVICES FOR CONTINUOUS WEB PROCESSING TANKS WHICH HAVE A SLOT FOR PASSAGE OF THE WEB IN AND OUT OF THE TANK, WITH THE SLOTS INCLUDING A PAIR OF MEMBRANE FOIL MEANS POSITIONED ABOUT THE SLOT SO THAT THE WEB PASSES BETWEEN THE MEMBRANE MEANS, THE IMPROVEMENT COMPRISING A SPRING MEANS FIXEDLY MOUNTED AT ONE END ON THE MEANS FORMING THE SLOT AND POSITIONED TO CONTACT ONE OF THE MEMBRANE FOIL MEANS UNDER SPRING COMPRESSION AT A POINT URGING THAT ONE MEMBRANE MEANS TOWARDS THE OTHER MEANS.
Inventors
- 👤 Karl Peter Lopata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:18
CPC Classifications
D; D06; D06B; D06B23/00; D06B23/14; D06B23/18; D06C; D06C7/00; D06C2700/00; D06C2700/13
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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |