Headset incorporating a microphone and an earphone
Abstract
Abstract A DYNAMIC MICROPHONE TRANSDUCER AND AN EARPHONE TRANSDUCER ARE MOUNTED IN FRONT AND REAR HALF-SHELLS WHICH FIT TOGETHER TO FORM A CASING. SOUND IS BROUGHT TO THE MICROPHONE TRANSDUCER BY A VOICE TUBE EXTENDING FORWARDLY FROM THE FRONT HALF-SHELL. AN EAR TUBE IS CONNECTED TO THE REAR HALF-SHELL TO CARRY THE SOUND FROM THE EARPHONE TRANSDUCER TO THE EAR OF THE USER. POROUS DISCS MADE OF SINTERED METAL ARE PREFERABLY MOUNTED IN THE TUBES FOR DAMPING RESONANCES THEREIN. THE HEADSET IS SUPPORTED BY A MOUNTING MEMBER HAVING FRONT AND REAR CLIPS OF GENERALLY CIRCULAR CURVATURE FOR RESILIENTLY ENGAGING THE HALF-SHELLS TO HOLD THEM TOGETHER. THE HALF-SHELLS ARE PREFERABLY FORMED WITH RECESSES FOR RECEIVING THE CLIPS IN SUBSTANTIALLY FLUSH RELATION TO THE HALF-SHELLS. THE MOUNTING MEMBER PREFERABLY INCLUDES A TEMPLE CLIP FOR MOUNTING THE HEADSET ON ONE OF THE TEMPLES OF A PAIR OF EYEGLASSES. A SWIVEL JOINT IS PREFERABLY PROVIDED BETWEEN THE TEMPLE CLIP AND THE FRONT AND REAR CLIPS.
Inventors
- 👤 Marvin C Negley
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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 |