US3125478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making plastic tubular members of
Assignee: —
•
Filing: 1959-10-16
•
Granted: 1964-03-17
•
Expires: 1979-10-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:28
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/56; B29C53/58; B29C53/581; B29C53/80; B29C53/82; B29C53/821; B29C53/824; B29C53/84; B29C53/845
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
THE PORCESS OF MANUFACTURING PLASTIC TUBULAR MEMBERS WHICH COMPRISES, CRINKLING A SHEET OF FIBROUS MATERIAL TO SHORTEN IT, TREATING THE MATERIAL WITH RESIN, SPIRALLY WINDING THE RESIN TREATED MATERIAL INTO A TUBULAR PREFORM, PLACING A TUBULAR RESTRAINING MEMBER AROUND THE EXTERIOR OF THE PRREFORM, APPLYING AN OUTWARDLY ACTING FLUID PRESSURE INTERNALLY OF THE PREFORM TO COMPRESS THE PLIES TOGETHER AND EXPAND THEM CIRCUMFERENTIALLY TO REMOVE THE CRINKLING AND LENGTHEN THE MATERIAL APPROXIMATELY THE AMOUNT IT WAS SHORTENED, WHILE SIMULTANEOUSLY HEATING THE PREFORM TO CURE THE RESIN.
Claim 2
Dependent Claim
86 words
THE PORCESS OF MANUFACTURING PLASTIC TUBULAR MEMBERS WHICH COMPRISES, CRINKLING A SHEET OF FIBROUS MATERIAL TO SHORTEN IT, TREATING THE MATERIAL WITH RESIN, SPIRALLY WINDING THE RESIN TREATED MATERIAL INTO A TUBULAR PREFORM, PLACING A TUBULAR RESTRAINING MEMBER AROUND THE EXTERIOR OF THE PRREFORM, APPLYING AN OUTWARDLY ACTING FLUID PRESSURE INTERNALLY OF THE PREFORM TO COMPRESS THE PLIES TOGETHER AND EXPAND THEM CIRCUMFERENTIALLY TO REMOVE THE CRINKLING AND LENGTHEN THE MATERIAL APPROXIMATELY THE AMOUNT IT WAS SHORTENED, WHILE SIMULTANEOUSLY HEATING THE PREFORM TO CURE THE RESIN.
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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) | 1967-03-17 | 1967-09-16 | 1968-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-17 | 1971-09-16 | 1972-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-17 | 1975-09-16 | 1976-03-17 | $7700.00 | Window Closed / Lapsed |