Patent US3129920A successfully refreshed from Google Patents.
US3129920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conduit connection and valve
Assignee: Individual
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Filing: 1961-07-31
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Granted: 1964-04-21
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Expires: 1981-07-31
Abstract
No abstract record available.
Inventors
- 👤 Crawford K Stillwagon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:49
CPC Classifications
F; F16; F16L; F16L17/00; F16L17/02; F16L17/04; F16L29/00; F16L29/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A BUTTERFLY VALVE ADAPTED FOR DIRECT CONNECTION BETWEEN TWO ALIGNED PIPES HAVING GROOVES IN THEIR OUTER SURFACES ADJACENT THEIR CONFRONTING ENDS, COMPRISING SEPARABLE BODY PARTS, EACH BODY PART BEING FORMED WITH INTURNED FLANGES AT THEIR EDGES PROVIDING A TROUGH THEREBETWEEN AND ADAPTED TO FIT GROOVES IN THE PIPE ENDS FOR ASSEMBLY IN A PIPELINE; A SLEEVE OF RESILIENT SEALING MATERIAL WITHIN THE TROUGH; PARTS FORMED ON THE INNER CENTRAL PART OF THE SLEEVE FOR ENGAGING THE PIPE END EDGES WITH AN INTERFERENCE FIT PROVIDING A PRESSURE-ENERGIZED TYPE SEAL THEREWITH, SAID SLEEVE HAVING PARTS FORMED ON THE INNER SURFACE ADJACENT EACH END PROVIDING AN INTERFERENCE FIT WITH THE OUTER SURFACE OF PIPE ENDS PROVIDING A PRESSURE-ENERGIZED SEAL THEREWITH; MEANS FOR ASSEMBLING AND HOLDING THE BODY PARTS IN A CIRCULAR CONFIGURATION WITH THE SLEEVE IN THE TROUGH PROVIDED BY THE BODY PARTS; AND A VALVE DISC WITH STEMS EXTENDING THROUGH THE SLEEVE AND JOURNALED IN THE BODY PARTS, SAID DISC ENGAGING THE SLEEVE TO PROVIDE A SEAL THEREWITH WHEN IN CLOSED POSITION.
Claim 2
Dependent Claim
170 words
A BUTTERFLY VALVE ADAPTED FOR DIRECT CONNECTION BETWEEN TWO ALIGNED PIPES HAVING GROOVES IN THEIR OUTER SURFACES ADJACENT THEIR CONFRONTING ENDS, COMPRISING SEPARABLE BODY PARTS, EACH BODY PART BEING FORMED WITH INTURNED FLANGES AT THEIR EDGES PROVIDING A TROUGH THEREBETWEEN AND ADAPTED TO FIT GROOVES IN THE PIPE ENDS FOR ASSEMBLY IN A PIPELINE; A SLEEVE OF RESILIENT SEALING MATERIAL WITHIN THE TROUGH; PARTS FORMED ON THE INNER CENTRAL PART OF THE SLEEVE FOR ENGAGING THE PIPE END EDGES WITH AN INTERFERENCE FIT PROVIDING A PRESSURE-ENERGIZED TYPE SEAL THEREWITH, SAID SLEEVE HAVING PARTS FORMED ON THE INNER SURFACE ADJACENT EACH END PROVIDING AN INTERFERENCE FIT WITH THE OUTER SURFACE OF PIPE ENDS PROVIDING A PRESSURE-ENERGIZED SEAL THEREWITH; MEANS FOR ASSEMBLING AND HOLDING THE BODY PARTS IN A CIRCULAR CONFIGURATION WITH THE SLEEVE IN THE TROUGH PROVIDED BY THE BODY PARTS; AND A VALVE DISC WITH STEMS EXTENDING THROUGH THE SLEEVE AND JOURNALED IN THE BODY PARTS, SAID DISC ENGAGING THE SLEEVE TO PROVIDE A SEAL THEREWITH WHEN IN CLOSED POSITION.
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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |