Miniature acoustic transducer of improved construction
Abstract
Abstract AN IMPROVED TRANSDUCER CONSTRUCTION WHICH INCLUDES A CASE, A BULKHEAD BEING MOUNTED ON THE CASE, AND A COVER IS SECURED TO THE BULKHEAD. A DIAPHRAGM IS MOUNTED ON THE BULKHEAD ADJACENT TO THE COVER. A COIL IS MOUNTED ON THE BULKHEAD WITHIN THE CASE. A U-SHAPED MAGNET SUPPORT IS MOUNTED ON THE BULKHEAD WITHIN THE CASE AND A PAIR OF SPACED MAGNETS IS MOUNTED IN THE CASE, ONE OF THE MAGNETS ON THE BULKHEAD AND THE OTHER ON THE MAGNET SUPPORT. A COIL IS MOUNTED ON THE BULKHEAD ADJACENT TO THE MAGNETS AND A USHAPED ARMATURE REED HAS ONE END CONNECTED TO ONE OF THE MAGNETS THROUGH THE MAGNET SUPPORT AND THE OTHER END OF THE ARMATURE REED EXTENDS THROUGH THE COIL AND IS POSITIONED BETWEEN THE MAGNETS.
Inventors
- 👤 Elmer Victor Carlson
- 👤 Floyd Warren Cross
- 👤 Mead Clifford Killion
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |