US3235291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling for a thermoplastic liner in a metal conduit
Assignee: Phillips Petroleum Co
•
Filing: 1963-04-29
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Granted: 1966-02-15
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Expires: 1983-04-29
Abstract
No abstract record available.
Inventors
- 👤 Jacoby Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:15
CPC Classifications
F; F16; F16L; F16L58/00; F16L58/02; F16L58/04; F16L58/10; F16L17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A COUPLING APPARATUS FOR JOINING TOGETHER ADJACENT SECTIONS OF A HOLLOW THERMOPLASTIC LINER DISPOSED IN A PRESSURE-RESISTANT CONDUIT WHICH CONSISTS ESSENTIALLY OF A COUNTER BORED SECTION IN EACH ADJACENT END OF SAID SECTIONS OF LINER; A SLEEVE DISPOSED IN SAID COUNTER BOARED SECTIONS WITH A SLIDING FIT; A RESILIENT RING GASKET POSITIONED ON THE PE-
Claim 2
Dependent Claim
55 words
A COUPLING APPARATUS FOR JOINING TOGETHER ADJACENT SECTIONS OF A HOLLOW THERMOPLASTIC LINER DISPOSED IN A PRESSURE-RESISTANT CONDUIT WHICH CONSISTS ESSENTIALLY OF A COUNTER BORED SECTION IN EACH ADJACENT END OF SAID SECTIONS OF LINER; A SLEEVE DISPOSED IN SAID COUNTER BOARED SECTIONS WITH A SLIDING FIT; A RESILIENT RING GASKET POSITIONED ON THE PE-
References Cited (Backward Citations)
US587347A
Cited
US2735699A
Cited
CH136459A
Cited
FR1084115A
Cited
US2762904A
Cited
US2982311A
Cited
US2912263A
Cited
FR1218368A
Cited
US3074748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |