US3213414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic transducer with pressure equalizing cover
Assignee: Schlumberger Well Surveying Corp
•
Filing: 1962-08-27
•
Granted: 1965-10-19
•
Expires: 1982-08-27
Abstract
No abstract record available.
Inventors
- 👤 Edward I Moser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:55
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/52; E; E21; E21B; E21B47/00; E21B47/005; G01V1/16; G01V1/18; G01V1/186; G01V1/188; G01V1/523
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
AN ELECTROACOUSTIC TRANSDUCER FOR USE IN A WELL BORE OR THE LIKE WHICH CONTAINS A MEDIUM OF VARYING PRESSURE, COMPRISING A SUPPORTING MANDREL, A CYLINDRICAL ELEMENT OF ELECTROACOUSTIC TRANSDUCING MATERIAL MOUNTED IN DURROUNDING RELATIONSHIP TO SAID SUPPORTING MANDREL TO DEFINE AN ANNULAR CAVITY THEREBETWEEN, A CYLINDRICAL SPACER OF NON-CONDUCTING MATERIAL SURROUNDING SAID ELEMENT, FLEXIBLE, IMPERMEABLE COVERING MEANS SURROUNDING SAID SPACER AND SEALED AT BOTH ENDS THEREOF TO SAID MANDREL TO PROVIDE A FLUID-TIGHT CHAMBER INCLUDING SAID ANNULAR CAVITY, THE OUTER SURFACE OF SAID COVERING MEANS
Claim 2
Dependent Claim
85 words
AN ELECTROACOUSTIC TRANSDUCER FOR USE IN A WELL BORE OR THE LIKE WHICH CONTAINS A MEDIUM OF VARYING PRESSURE, COMPRISING A SUPPORTING MANDREL, A CYLINDRICAL ELEMENT OF ELECTROACOUSTIC TRANSDUCING MATERIAL MOUNTED IN DURROUNDING RELATIONSHIP TO SAID SUPPORTING MANDREL TO DEFINE AN ANNULAR CAVITY THEREBETWEEN, A CYLINDRICAL SPACER OF NON-CONDUCTING MATERIAL SURROUNDING SAID ELEMENT, FLEXIBLE, IMPERMEABLE COVERING MEANS SURROUNDING SAID SPACER AND SEALED AT BOTH ENDS THEREOF TO SAID MANDREL TO PROVIDE A FLUID-TIGHT CHAMBER INCLUDING SAID ANNULAR CAVITY, THE OUTER SURFACE OF SAID COVERING MEANS
References Cited (Backward Citations)
US2251817A
Cited
US2783449A
Cited
US3018466A
Cited
US2868311A
Cited
US3056464A
Cited
US3093810A
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 |