US3212799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe coupling
Assignee: J-M A/C PIPE Corp A DE CORP
•
Filing: 1962-05-22
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Granted: 1965-10-19
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Expires: 1982-05-22
Abstract
No abstract record available.
Inventors
- 👤 David W Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:58
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/002; F16L21/005; F16L27/00; F16L27/10; F16L27/107; F16L37/00; F16L37/02; F16L37/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A COUPLING FOR USE WITH ADJACENT PIPE ENDS FOR FORMING A JOINT COMPRISING: (A) A TUBULAR COUPLING COMPRISING A SEMI-ELASTIC SNYTHETIC RESIN MATERIAL, (B) SAID COUPLING COMPRISING TWO SEPARATE TUBULAR SECTIONS JOINED BY AN INTEGRAL RIB, (C) EACH OF SAID SECTIONS HAVING A PLURALITY OF CIRCUMFERENTIALLY SPACED, INDEPENDENTLY FORMED CORRUGATIONS THEREIN, THE ADJACENT CORRUGATIONS IN ONE SECTION BEING CIRCUMFERENTIALLY DISPLACED FROM THE ADJACENT CORRUGATIONS IN THE OTHER SECTION IN SUCH A MANNER THAT THE CORRUGATIONS OF ONE SECTION ARE AXIALLY MISALIGNED FROM THE CORRUGATIONS IN THE OTHER SECTION, (D) SAID CORRUGATIONS IN EACH OF SAID SECTIONS EXTENDING GENERALLY IN AN AXIAL DIRECTION, (E) EACH OF SAID CORRUGATIONS HAVING AN AXIAL INNER EXTREMITY ADJACENT SAID INTEGRAL RIB,
Claim 2
Dependent Claim
116 words
A COUPLING FOR USE WITH ADJACENT PIPE ENDS FOR FORMING A JOINT COMPRISING: (A) A TUBULAR COUPLING COMPRISING A SEMI-ELASTIC SNYTHETIC RESIN MATERIAL, (B) SAID COUPLING COMPRISING TWO SEPARATE TUBULAR SECTIONS JOINED BY AN INTEGRAL RIB, (C) EACH OF SAID SECTIONS HAVING A PLURALITY OF CIRCUMFERENTIALLY SPACED, INDEPENDENTLY FORMED CORRUGATIONS THEREIN, THE ADJACENT CORRUGATIONS IN ONE SECTION BEING CIRCUMFERENTIALLY DISPLACED FROM THE ADJACENT CORRUGATIONS IN THE OTHER SECTION IN SUCH A MANNER THAT THE CORRUGATIONS OF ONE SECTION ARE AXIALLY MISALIGNED FROM THE CORRUGATIONS IN THE OTHER SECTION, (D) SAID CORRUGATIONS IN EACH OF SAID SECTIONS EXTENDING GENERALLY IN AN AXIAL DIRECTION, (E) EACH OF SAID CORRUGATIONS HAVING AN AXIAL INNER EXTREMITY ADJACENT SAID INTEGRAL RIB,
References Cited (Backward Citations)
CA623471A
Cited
US1058683A
Cited
US1811277A
Cited
US2116165A
Cited
US2610733A
Cited
US2890899A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |