Patent US2733423A successfully refreshed from Google Patents.
US2733423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic transducers having annular elements
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
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Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:26
CPC Classifications
H; H04; H04R; H04R17/00; B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0607; B06B1/0611; B06B1/0622; B06B1/0644; B06B1/0655; G; G01; G01S; G01S1/00; G01S1/72; H01; H01J; H01J31/00; H01J31/08; H01J31/58; H01J31/60; H01J31/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
IN A TRANSDUCER FOR TRANSLATING SOUND WAVES IN A FLUID MEDIUM INTO ELECTRICAL WAVES IN AN ELECTRIC CIRCUIT, AND VICE VERSA: A FRONT WALL MEMBER OF SOUND-TRANSPARENT MATERIAL; A SOLID WALL MEMBER OF SOUND-REFLECTIVE MATERIAL BACK OF SAID FRONT WALL MEMBER IN GENERALLY PARALLEL RELATION THERETO AND SUBSTANTIALLY COEXTENSIVE THEREWITH, AND MEANS JOINING SAID WALL MEMBERS TOGETHER AT THEIR EDGES TO FORM AN ENCLOSURE; AN ARRAY OF RADIALLY VIBRATILE ANNULAR TRANSDUCING ELEMENTS POSITIONED IN SAID ENCLOSURE EACH ELEMENT RESTING AT ONE END AGAINST SAID SOLID WALL MEMBER; MEANS INCLUDING SOUND-ABSORPTIVE MATERIAL INTERPOSED BETWEEN SAID ELEMENTS FOR SUPPORTING THEM IN SEPARATED RELATION AND PREVENTING EFFECTIVE ACOUSTIC VOUPLING BETWEEN THEIR OUTER SURFACES AND SAID FRONT WALL MEMBER; A SOUND-PROPAGATING COMPRESSIONAL WAVE MEDIUM FILLING THE FREE SPACE WITHIN SAID ENCLOSURE FOR PRPAGATING SOUND BETWEEN SAID FRONT IALL MEMBER AND MEANS ASSOCIATING SAID ELEMENTS WITH SAID ELECTRIC CIRCUIT.
Claim 2
Dependent Claim
144 words
IN A TRANSDUCER FOR TRANSLATING SOUND WAVES IN A FLUID MEDIUM INTO ELECTRICAL WAVES IN AN ELECTRIC CIRCUIT, AND VICE VERSA: A FRONT WALL MEMBER OF SOUND-TRANSPARENT MATERIAL; A SOLID WALL MEMBER OF SOUND-REFLECTIVE MATERIAL BACK OF SAID FRONT WALL MEMBER IN GENERALLY PARALLEL RELATION THERETO AND SUBSTANTIALLY COEXTENSIVE THEREWITH, AND MEANS JOINING SAID WALL MEMBERS TOGETHER AT THEIR EDGES TO FORM AN ENCLOSURE; AN ARRAY OF RADIALLY VIBRATILE ANNULAR TRANSDUCING ELEMENTS POSITIONED IN SAID ENCLOSURE EACH ELEMENT RESTING AT ONE END AGAINST SAID SOLID WALL MEMBER; MEANS INCLUDING SOUND-ABSORPTIVE MATERIAL INTERPOSED BETWEEN SAID ELEMENTS FOR SUPPORTING THEM IN SEPARATED RELATION AND PREVENTING EFFECTIVE ACOUSTIC VOUPLING BETWEEN THEIR OUTER SURFACES AND SAID FRONT WALL MEMBER; A SOUND-PROPAGATING COMPRESSIONAL WAVE MEDIUM FILLING THE FREE SPACE WITHIN SAID ENCLOSURE FOR PRPAGATING SOUND BETWEEN SAID FRONT IALL MEMBER AND MEANS ASSOCIATING SAID ELEMENTS WITH SAID ELECTRIC CIRCUIT.
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) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |