US3335484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for flanging thermoplastic lined pipe
Assignee: Dow Chemical Co
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Filing: 1964-06-05
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Granted: 1967-08-15
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Expires: 1984-06-05
Abstract
No abstract record available.
Inventors
- 👤 Donald J Parker
- 👤 Eugene J Bourasso
- 👤 Walter H West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:22
CPC Classifications
F; F16; F16L; F16L58/00; F16L58/18; F16L58/187; B; B29; B29B; B29B13/00; B29B13/02; B29B13/023; B29B13/024; B29B13/025; B29C; B29C57/00; B29C57/005; B29C35/00; B29C35/02; B29C35/04; B29C35/045; B29L; B29L2023/00; B29L2023/22; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49428; Y10T29/49446; Y10T29/49826; Y10T29/49908; Y10T29/49938; Y10T29/4994
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A METHOD OF FLANGING THE LINER OF A THERMOPLASTIC RESINOUS LINED PIPE COMPRISING REMOVING A PORTION OF THE PIPE HAVING A GENERALLY CYLINDRICAL CONFIGURATION ADJACENT AT LEAST ONE END OF THE PIPE TO LEAVE A GENERALLY CYLINDRICAL PORTION OF THE LINER EXTENDING THEREFROM, APPLYING TO THE TERMINAL PORTION OF THE PIPE A FLANGE HAVING A RADIALLY EXTENDING SURFACE ADJACENT TO THE EXTENDING PORTION OF THE LINGING, THE IMPROVEMENT WHICH COMPRISES GENERALLY UNIFORMLY HEATING THE EXTENDED PORTION OF THE LINER UNTIL THE PORTION IS IN A HEAT PLASTIFIED CONDITION BY MEANS OF
Claim 2
Dependent Claim
92 words
IN A METHOD OF FLANGING THE LINER OF A THERMOPLASTIC RESINOUS LINED PIPE COMPRISING REMOVING A PORTION OF THE PIPE HAVING A GENERALLY CYLINDRICAL CONFIGURATION ADJACENT AT LEAST ONE END OF THE PIPE TO LEAVE A GENERALLY CYLINDRICAL PORTION OF THE LINER EXTENDING THEREFROM, APPLYING TO THE TERMINAL PORTION OF THE PIPE A FLANGE HAVING A RADIALLY EXTENDING SURFACE ADJACENT TO THE EXTENDING PORTION OF THE LINGING, THE IMPROVEMENT WHICH COMPRISES GENERALLY UNIFORMLY HEATING THE EXTENDED PORTION OF THE LINER UNTIL THE PORTION IS IN A HEAT PLASTIFIED CONDITION BY MEANS OF
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) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |