US2622901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion and solvent resistant pipe joint
Assignee: Atlas Mineral Products Company of Pennsylvania
•
Filing: 1951-01-22
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Granted: 1952-12-23
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Expires: 1971-01-22
Abstract
No abstract record available.
Inventors
- 👤 Raymond B Seymour
- 👤 Walker Willis Benedict
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:02
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/10; F16L13/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A BELL AND SPIGOT PIPE JOINT COMPRISING A SULFUR CEMENT LINING ON THE INNER CIRCUMFERENCE OF A BELL CAVITY, A SECOND SULFUR CEMENT LINING ON THE OUTER PERIPHERY OF A SPIGOT CENTERED WITHIN SAID BELL CAVITY, SAID SECOND LINING BEING SPACED FROM SAID FIRST MENTIONED LINING ANS SPACED FROM THE END OF THE SPIGOT, A CORROSION RESISTANT SYNTHETIC RESIN CEMENT FORMING AN ANNULAR RING AT THE JUNCTURE OF THE BELL AND SPIGOT AND EXTENDING FROM THE END OF SAID SPIGOT TO SAID SECOND LINING SAID ANNULAR RING BEING BONDED TO SAID LININGS, TO THE SPIGOT AND TO THE BELL, SAID SYNTHETIC RESIN CEMENT EXTENDING FROM SAID RING BETWEEN THE OPPOSITE FACES OF SAID LININGS AND SAID RESIN CEMENT BEING SELECTED FROM THE GROUP CONSISTING OF A POLYFURFURYL ALCOHOL RESIN CEMENT AND A PHENOLIC RESIN CEMENT.
Claim 2
Dependent Claim
135 words
A BELL AND SPIGOT PIPE JOINT COMPRISING A SULFUR CEMENT LINING ON THE INNER CIRCUMFERENCE OF A BELL CAVITY, A SECOND SULFUR CEMENT LINING ON THE OUTER PERIPHERY OF A SPIGOT CENTERED WITHIN SAID BELL CAVITY, SAID SECOND LINING BEING SPACED FROM SAID FIRST MENTIONED LINING ANS SPACED FROM THE END OF THE SPIGOT, A CORROSION RESISTANT SYNTHETIC RESIN CEMENT FORMING AN ANNULAR RING AT THE JUNCTURE OF THE BELL AND SPIGOT AND EXTENDING FROM THE END OF SAID SPIGOT TO SAID SECOND LINING SAID ANNULAR RING BEING BONDED TO SAID LININGS, TO THE SPIGOT AND TO THE BELL, SAID SYNTHETIC RESIN CEMENT EXTENDING FROM SAID RING BETWEEN THE OPPOSITE FACES OF SAID LININGS AND SAID RESIN CEMENT BEING SELECTED FROM THE GROUP CONSISTING OF A POLYFURFURYL ALCOHOL RESIN CEMENT AND A PHENOLIC RESIN CEMENT.
References Cited (Backward Citations)
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Cited
US1971100A
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US1745290A
Cited
US2285046A
Cited
US2401554A
Cited
US2517778A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |