US3024496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for manufacturing corrugated thermoplastic sheets
Assignee: S A S Lavorazione Materie Plastische (l M P) Di M I Colombo & C
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Filing: 1958-03-26
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Granted: 1962-03-13
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Expires: 1978-03-26
Abstract
No abstract record available.
Inventors
- 👤 Colombo Roberto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:40
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/22; B29C53/24; B29C53/26; Y; Y10; Y10S; Y10S160/00; Y10S160/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN A PROCESS OF CORRUGATING A WEB OF A THERMOPLASTIC MATERIAL BY MEANS OF A MOULD HAVING A CORRUGATED FACE THE STEPS OF CONTINOUSLY TRAILING THE WEB ALONG A PREDETERMINEDF PATH; HAERATING THE WEB IN A LONGITUDINALLY TENSIONEDF CONDITION WITHIN A LONGITUDINALLY LIMITED REGION OF THE PATH UP TO SUBSTANTIALLY THE SOFTENING TEMPERATURE OF THE THERMOPLASTIC MATERIAL THEREBY LONGITUDINALLY STRETCHING THE WEB; POSITIONING THE MOULD ON A REGION OF THE PATH DOWNSTREAM OF THE FIRSTMENTIONED REGION WITH THE CORRUGATIONS ON THE CORRUGATED FACE OF THE MOULD EXTENDING LONGITUDINALLY OF THE PATH; PRESSING SOFTENED LONGITUDINALLY TENSIONEDF INCREMENTAL ZONES OF THE WEB AGAINST THE CORRUGATED FACE OF THE MOULD WHILE MAINTAINING SUBSTANTIAL-
Claim 2
Dependent Claim
110 words
IN A PROCESS OF CORRUGATING A WEB OF A THERMOPLASTIC MATERIAL BY MEANS OF A MOULD HAVING A CORRUGATED FACE THE STEPS OF CONTINOUSLY TRAILING THE WEB ALONG A PREDETERMINEDF PATH; HAERATING THE WEB IN A LONGITUDINALLY TENSIONEDF CONDITION WITHIN A LONGITUDINALLY LIMITED REGION OF THE PATH UP TO SUBSTANTIALLY THE SOFTENING TEMPERATURE OF THE THERMOPLASTIC MATERIAL THEREBY LONGITUDINALLY STRETCHING THE WEB; POSITIONING THE MOULD ON A REGION OF THE PATH DOWNSTREAM OF THE FIRSTMENTIONED REGION WITH THE CORRUGATIONS ON THE CORRUGATED FACE OF THE MOULD EXTENDING LONGITUDINALLY OF THE PATH; PRESSING SOFTENED LONGITUDINALLY TENSIONEDF INCREMENTAL ZONES OF THE WEB AGAINST THE CORRUGATED FACE OF THE MOULD WHILE MAINTAINING SUBSTANTIAL-
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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) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |