US2757533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas leak detector for well casing
Assignee: Phillips Petroleum Co
•
Filing: 1951-01-02
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Granted: 1956-08-07
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Expires: 1971-01-02
Abstract
No abstract record available.
Inventors
- 👤 Bruce F Wiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:31
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/10; E21B47/107; F; F16; F16L; F16L2101/00; F16L2101/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
AN APPARATUS FOR LOCATING A GAS LEAK IN A CLOSED-IN GAS WELL CASING WHICH COMPRISES A SUBSTANTIALLY CYLINDRICAL BODY ADAPTED TO BE LOWERED INTO A WELL CASING AND ADAPTED TO PROVIDE A CLOSE FIT THEREWITH; A SIREN SECURED TO SAID CYLINDRICAL BODY; A SINGLE PASSAGEWAY THROUGH SAID BODY COMMUNICATING AT ITS UPPER END WITH SAID SIREN; AND MEANS AT THE SURFACE FOR RECEIVING AND AMPLIFYING THE SOUND PRODUCED BY SAID SIREN.
Claim 2
Independent Claim
71 words
AN APPARATUS FOR LOCATING A GAS LEAK IN A CLOSED-IN GAS WELL CASING WHICH COMPRISES A SUBSTANTIALLY CYLINDRICAL BODY ADAPTED TO BE LOWERED INTO A WELL CASING AND ADAPTED TO PROVIDE A CLOSE FIT THEREWITH; A SIREN SECURED TO SAID CYLINDRICAL BODY; A SINGLE PASSAGEWAY THROUGH SAID BODY COMMUNICATING AT ITS UPPER END WITH SAID SIREN; AND MEANS AT THE SURFACE FOR RECEIVING AND AMPLIFYING THE SOUND PRODUCED BY SAID SIREN.
References Cited (Backward Citations)
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Cited
US2008934A
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US2191119A
Cited
US2210417A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-07 | 1960-02-06 | 1960-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-07 | 1964-02-06 | 1964-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-07 | 1968-02-06 | 1968-08-07 | $7700.00 | Window Closed / Lapsed |