US3258377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming tubular members
Assignee: BABBITT PIPE CO Inc
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Filing: 1961-09-14
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Granted: 1966-06-28
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Expires: 1981-09-14
Abstract
No abstract record available.
Inventors
- 👤 Charles H Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:19
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/44; B29C33/00; B29C33/44; B29C33/48; B29C33/50; B29C33/505; B29C49/24; B29C49/26; B29C63/00; B29C63/26; B29C63/28; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/42; B29C70/44; B29C70/446; G; G08; G08C; G08C15/00; G08C15/06; G08C15/12; B29C2949/00; B29C2949/07; B29C2949/079; B29C2949/08; B29C43/00; B29C43/02; B29C43/10; B29C43/12; B29K; B29K2061/00; B29K2061/04; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/0809; B29K2105/25; B29K2105/253; B29K2105/258; B29K2309/00; B29K2309/12; B29L; B29L2023/00; B29L2023/22; B29L2031/00; B29L2031/30; B29L2031/3097; Y; Y10; Y10S; Y10S425/00; Y10S425/044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE METHOD OF FORMING A PLASTIC TUBULAR MEMBER WITHIN A METAL TUBULAR MEMBER COMPRISING, INSERTING A TUBULAR PERFORM OF RESIN TREATED FIBROUS MATERIAL INTO THE METAL TUBULAR MEMBER, APPLYING AN OUTWARDLY ACTING FLUID PRESSURE INTERNALLY OF THE PREFORM TO COMPRESS THE PREFORM OUTWARDLY AGAINST THE METAL MEMBER, THE PRESSURE BEING GREATER THAN THE OUTWARDLY ACTING PRESSURE THE METAL MEMBER CAN WITHSTAND WITHOUT DAMAGE THERETO, SIMULTANEOUSLY APPLYING AN INWARDLY ACTING COMPENSATING FLUID PRESSURE EXTERNALLY OF THE METAL MEMBER TO COMPENSATE THE INTERNAL PRESSURE TO PREVENT DAMAGE TO THE METAL MEMBER, AND HEATING THE FLUID TO CURE THE RESIN.
Claim 2
Independent Claim
97 words
THE METHOD OF FORMING A PLASTIC TUBULAR MEMBER WITHIN A METAL TUBULAR MEMBER COMPRISING, INSERTING A TUBULAR PERFORM OF RESIN TREATED FIBROUS MATERIAL INTO THE METAL TUBULAR MEMBER, APPLYING AN OUTWARDLY ACTING FLUID PRESSURE INTERNALLY OF THE PREFORM TO COMPRESS THE PREFORM OUTWARDLY AGAINST THE METAL MEMBER, THE PRESSURE BEING GREATER THAN THE OUTWARDLY ACTING PRESSURE THE METAL MEMBER CAN WITHSTAND WITHOUT DAMAGE THERETO, SIMULTANEOUSLY APPLYING AN INWARDLY ACTING COMPENSATING FLUID PRESSURE EXTERNALLY OF THE METAL MEMBER TO COMPENSATE THE INTERNAL PRESSURE TO PREVENT DAMAGE TO THE METAL MEMBER, AND HEATING THE FLUID TO CURE THE RESIN.
References Cited (Backward Citations)
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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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |