US3283086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Versatile extensive area sound reproducer or audio transducer
Assignee: Individual
•
Filing: 1963-06-17
•
Granted: 1966-11-01
•
Expires: 1983-06-17
Abstract
No abstract record available.
Inventors
- 👤 Willis F Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:52
CPC Classifications
H; H04; H04R; H04R9/00; H04R9/02; H04R9/04; H04R9/046; H04R9/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
AN EXTENSIVE AREA TRANSDUCER COMPRISING, IN COMBINATION, A FLAT DIAPHRAGM; MEANS FOR RESILIENTLY SUPPORTING THE DIAPHRAGM IN A TAUT STATE; A CONTINUOUS CONDUCTOR COIL DEPLOYED ON BOTH SIDES IN SPREADING CONFIGURATION FROM THE CENTRAL AREA OF THE DIAPHRAGM TOWARD ITS EDGES; AND MEANS DISPOSED ADJACENT ONE SIDE OF THE DIAPHRAGM FOR PRODUCING MAGNETIC FLUX LINES LINKING SUBSTANTIALLY ALL INCREMENTS OF THE CONDUCTOR TO GENERATE CURRENT BUILD-UP
Claim 2
Dependent Claim
66 words
AN EXTENSIVE AREA TRANSDUCER COMPRISING, IN COMBINATION, A FLAT DIAPHRAGM; MEANS FOR RESILIENTLY SUPPORTING THE DIAPHRAGM IN A TAUT STATE; A CONTINUOUS CONDUCTOR COIL DEPLOYED ON BOTH SIDES IN SPREADING CONFIGURATION FROM THE CENTRAL AREA OF THE DIAPHRAGM TOWARD ITS EDGES; AND MEANS DISPOSED ADJACENT ONE SIDE OF THE DIAPHRAGM FOR PRODUCING MAGNETIC FLUX LINES LINKING SUBSTANTIALLY ALL INCREMENTS OF THE CONDUCTOR TO GENERATE CURRENT BUILD-UP
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) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |