US3564492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices for emitting acoustic waves in a liquid medium
Assignee: IFP Energies nouvelles
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Filing: 1968-11-21
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Granted: 1971-02-16
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Expires: 1988-11-21
Abstract
Abstract THIS DEVICE COMPRISES AT LEAST TWO MOVABLE ELEMENTS MADE OF A RIGID MATERIAL AND INTERCONNECTED BY A TIGHTENING MEMBRANE MADE OF A DEFORMABLE MATERIAL WHICH CONSTITUTE A TIGHT ENCLOSURE WITH THE MOVABLE ELEMENTS. THESE ELEMENTS HAVE CONTACT AREAS ADAPTED TO BE APPLIED INTERMITTENTLY AGAINST EACH OTHER. RELEASABLE MEANS ARE PROVIDED FOR MOVING THESE ELEMENTS AWAY FROM EACH OTHER AND FOR LOCKING THEM IN SPACED RELATIONSHIP TO EACH OTHER, AS WELL AS MEANS FOR LIMITING THE DEFORMATION OF THE MEMBRANE TOWARD THE INTERIOR OF THE ENCLOSURE AND MEANS FOR CREATING IN THIS ENCLOSURE A PRESSURE MUCH LOWER THAN THE PRESSURE PREVAILING OUTSIDE THE ENCLOSURE.
Inventors
- 👤 Pierre Magneville
- 👤 Claude Duconge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:38
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/02; G01V1/143; G01V1/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |