Patent US3581340A successfully refreshed from Google Patents.
US3581340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calenders,particularly in drawing calenders for the production of webs of foil or film
Assignee: Schloemann AG
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Filing: 1968-11-19
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Granted: 1971-06-01
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Expires: 1988-11-19
Abstract
Abstract A CALENDAR, PARTICULARLY A DRAWING CALENDAR FOR THE PRODUCTION OF FOIL WEBS FROM RUBBER OR THERMOPLASTIC MATERIALS, FOLLOWED BY OPTIONAL RACKING AND EMBOSSING MEANS, THE RACKING MEANS AND THE EMBOSSING MEANS EACH BEING LODGED IN A SEPARATE CARRIAGE CAPABLE OF TRAVELLING BETWEEN A WORKING POSITION CLOSE TO THE CALENDAR AND AN IDLE POSITION, THE TWO CARRIAGES BEING MOUNTED ONE ABOVE THE OTHER FOR PARALLEL RUNNING, AND THE LOWER CARRIAGE BEING PROVIDED, AND AT THE END ADJACENT TO THE CALANDER, WITH AN OVERHANGING BOWL WHICH CAN ALSO SERVE AS A GUIDING ROLLER. THE UPPER CARRIAGE MAY BE MOUNTED UPON THE LOWER CARRIAGE, FOR TRAVELLING THEREON.
Inventors
- 👤 Uwe Thieme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:49
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/22; B29C43/24; B29C55/00; B29C55/02; B29C55/04; B29C55/06
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |