Patent US2597975A successfully refreshed from Google Patents.
US2597975A
Expired / Lapsed
US
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Method of manufacturing hose of synthetic thermoplastic materials
Assignee: Individual
•
Filing: 1948-02-19
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Granted: 1952-05-27
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Expires: 1968-02-19
Abstract
No abstract record available.
Inventors
- 👤 Colombo Roberto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:28
CPC Classifications
B; B26; B26D; B26D3/00; B26D3/16; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/13; B29C48/16; B29C48/18; B29C48/21; B29C48/25; B29C48/30; B29C48/32; B29C48/335
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
THE METHOD OF MANUFACTURING THERMOPLASTIC HOSE HAVING A HELICAL REINFORCEMENT RIB MADE OF A THERMOPHASTIC MATERIAL HAVING PROPERTIES DIFFERENT THAN THOSE OF THE MATERIAL OF THE HOSE, WHICH COMPRISES PRODUCING BY EXTRUSION A TWO LAYER THERMOPLASTIC HOSE, CUTTING A HELICAL SLIT IN THE OUTER LAYER AS THE COMPOSITE HOSE ISSUES FROM THE EXTRUSION DIE IN SEMI-PLASTIC CONDITION AND ELONGATING THE COMPOSITE HOSE TO STRETCH THE
Claim 2
Independent Claim
65 words
THE METHOD OF MANUFACTURING THERMOPLASTIC HOSE HAVING A HELICAL REINFORCEMENT RIB MADE OF A THERMOPHASTIC MATERIAL HAVING PROPERTIES DIFFERENT THAN THOSE OF THE MATERIAL OF THE HOSE, WHICH COMPRISES PRODUCING BY EXTRUSION A TWO LAYER THERMOPLASTIC HOSE, CUTTING A HELICAL SLIT IN THE OUTER LAYER AS THE COMPOSITE HOSE ISSUES FROM THE EXTRUSION DIE IN SEMI-PLASTIC CONDITION AND ELONGATING THE COMPOSITE HOSE TO STRETCH THE
References Cited (Backward Citations)
US2126733A
Cited
US2301207A
Cited
US2232514A
Cited
US2340956A
Cited
US2383733A
Cited
US2367643A
Cited
US2371991A
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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) | 1955-05-27 | 1955-11-26 | 1956-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-27 | 1959-11-26 | 1960-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-27 | 1963-11-26 | 1964-05-27 | $7700.00 | Window Closed / Lapsed |