Patent US3030253A successfully refreshed from Google Patents.
US3030253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of assembling a flange to a laminated non-metallic pipe
Assignee: Resistoflex Corp
•
Filing: 1959-03-09
•
Granted: 1962-04-17
•
Expires: 1979-03-09
Abstract
No abstract record available.
Inventors
- 👤 John Alexander N T St
- 👤 Jr Robert Thomann
- 👤 William E Titterton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:23
CPC Classifications
F; F16; F16L; F16L23/00; F16L23/02; F16L23/024; B; B29; B29C; B29C57/00; F16L23/12; F16L23/125; F16L47/00; F16L47/14; B29L; B29L2009/00; Y; Y10; Y10S; Y10S138/00; Y10S138/03; Y10S264/00; Y10S264/66; Y10S285/00; Y10S285/909; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T428/00; Y10T428/31504; Y10T428/3154
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
122 words
METHOD OF ASSEMBLING A FLANGE TO A LAMINATED PIPE HAVING A WALL INCLUDING A LAYER OF POLYTETRAFLUOROETHYLENE AND A LAYER OF CURED THERMOSETTING RESIN WHICH COMPRISES THE STEPS OF APPLYING HEAT TO THE END OF THE LAMINATED PIPE UNTIL THE THERMOSETTING RESIN ADJACENT SAID END HAS BEGUN TO BREAK DOWN AND DETERIORATE, THEREAFTER FLARING RADIALLY OUTWARDLY SAID END OF THE PIPE IN A MANNER TO MOLD THE POLYTETRAFLUOROETHYLENE LAYER, RECONSTITUING THE THERMOSETTING RESIN LAYER IN THE FLARED PORTION BY IMPREGNATING THE EXPOSED PORTIONS THEREOF WITH A COMPATIBLE RESINOUS CEMENT, REINFORCING THE FLARED PROTION BY BRINGING A BACK-UP RING WITH AN INTERNAL CNICAL SEAT INTO INTIMATE CONTACT WITH THE CEMENT BEFORE IT HAS SET, AND DISPOSING A FLANGED MEMBER BEHIND THE BACK-UP RING.
References Cited (Backward Citations)
BE523450A
Cited
US2415472A
Cited
US2433546A
Cited
US2545263A
Cited
US2608501A
Cited
US2632942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |