Patent US3101289A successfully refreshed from Google Patents.
US3101289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making expansible tubular diaphragms for tire building drums
Assignee: Pirelli and C SpA
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Filing: 1960-04-20
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Granted: 1963-08-20
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Expires: 1980-04-20
Abstract
No abstract record available.
Inventors
- 👤 Giletta Dario
- 👤 Pacciarini Antonio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:18
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/08; B29D30/20; B29D30/24; B29D30/244; B29D30/246; B29D30/247; B29D99/00; B29D99/005; B29D30/32; B29D2030/3214; B29L; B29L2031/00; B29L2031/755
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A PROCESS FOR BUILDING UP A TUBULAR DIAPHRAGM WHICH IS ELASTICALLY EXPANSIBLE IN THE RADIAL DIRECTION FROM A PREDETERMINED MINIMUM DIAMETER TO A PREDETERMINED MAXIMUM DIAMETER WHICH COMPRISES DISPOSING A FIRST SHEET OF UNCURED RUBBER ABOUT A CYLINDRICAL BODY HAVING A DIAMETER NOT GREATER THAN SAID MINIMUM DIAMETER, INCREASING THE DIAMETER OF THE CYLINDRICAL BODY TO SAID MAXINUM DIAMETER, WINDING ABOUT SAID FIRST SHEET OF UNCURED RUBBER A SHEET OF A RUBBERIZED WEFTLESS FABRIC WHOSE THREADS ARE INEXTENSIBLE AND PARALLEL TO ONE ANOTHER AND TO AXIS OF THE CYLINDRICAL BODY, SPIRALLY WINDING ABOUT THE CENTRAL ZONE OF SAID FABRIC A CORD FORMED OF ONE OR MORE EXTENSIBLE RUBBER THREADS COVERED WITH A BRAID OF INEXTENSIBLE MATERIAL, SUBJECTING SAID CORD TO A TENSION
Claim 2
Dependent Claim
122 words
A PROCESS FOR BUILDING UP A TUBULAR DIAPHRAGM WHICH IS ELASTICALLY EXPANSIBLE IN THE RADIAL DIRECTION FROM A PREDETERMINED MINIMUM DIAMETER TO A PREDETERMINED MAXIMUM DIAMETER WHICH COMPRISES DISPOSING A FIRST SHEET OF UNCURED RUBBER ABOUT A CYLINDRICAL BODY HAVING A DIAMETER NOT GREATER THAN SAID MINIMUM DIAMETER, INCREASING THE DIAMETER OF THE CYLINDRICAL BODY TO SAID MAXINUM DIAMETER, WINDING ABOUT SAID FIRST SHEET OF UNCURED RUBBER A SHEET OF A RUBBERIZED WEFTLESS FABRIC WHOSE THREADS ARE INEXTENSIBLE AND PARALLEL TO ONE ANOTHER AND TO AXIS OF THE CYLINDRICAL BODY, SPIRALLY WINDING ABOUT THE CENTRAL ZONE OF SAID FABRIC A CORD FORMED OF ONE OR MORE EXTENSIBLE RUBBER THREADS COVERED WITH A BRAID OF INEXTENSIBLE MATERIAL, SUBJECTING SAID CORD TO A TENSION
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-19 | 1967-02-18 | 1967-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-19 | 1971-02-18 | 1971-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-19 | 1975-02-18 | 1975-08-20 | $7700.00 | Window Closed / Lapsed |