Patent US3284581A successfully refreshed from Google Patents.
US3284581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loud speaker construction
Assignee: CBS Broadcasting Inc
•
Filing: 1963-06-03
•
Granted: 1966-11-08
•
Expires: 1983-06-03
Abstract
No abstract record available.
Inventors
- 👤 Clarence L Fender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:02
CPC Classifications
H; H04; H04R; H04R9/00; H04R9/02; H04R9/04; H04R9/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN COMBINATION WITH A LOUD SPEAKER HAVING A SPEAKER CONE HAVING AN APERTURE AT THE APEX THEREOF, A VOICE COIL ARRANGEMENT COMPRISING A CYLINDRICAL BOBBIN EXTENDING THROUGH SAID APERTURE TO AN END PORTION ADJACENT AND INWARDLY OF SAID APERTURE, A COIL OF WIRE ON THE OPPOSITE END PORTION OF SAID BOBBIN, SAID COIL HAVING ELECTRICAL LEADS EXTENDING THEREFROM THROUGH SAID APERTURE, SAID LEADS EXTENDING TO THE SURFACE OF SAID CONE ADJACENT BUT RADIALLY OUTWARD OF SAID APERTURE, A MEMBRANE EXTENDING OVER SAID LEADS ADJACENT SAID FIRST-MENTIONED END OF SAID BOBBIN FOR SPACING SAID LEADS FROM SAID SPEAKER CONE AT SAID APERTURE, AND ADHESIVE MEANS SECURING SAID LEADS TO SAID SURFACE.
Claim 2
Dependent Claim
110 words
IN COMBINATION WITH A LOUD SPEAKER HAVING A SPEAKER CONE HAVING AN APERTURE AT THE APEX THEREOF, A VOICE COIL ARRANGEMENT COMPRISING A CYLINDRICAL BOBBIN EXTENDING THROUGH SAID APERTURE TO AN END PORTION ADJACENT AND INWARDLY OF SAID APERTURE, A COIL OF WIRE ON THE OPPOSITE END PORTION OF SAID BOBBIN, SAID COIL HAVING ELECTRICAL LEADS EXTENDING THEREFROM THROUGH SAID APERTURE, SAID LEADS EXTENDING TO THE SURFACE OF SAID CONE ADJACENT BUT RADIALLY OUTWARD OF SAID APERTURE, A MEMBRANE EXTENDING OVER SAID LEADS ADJACENT SAID FIRST-MENTIONED END OF SAID BOBBIN FOR SPACING SAID LEADS FROM SAID SPEAKER CONE AT SAID APERTURE, AND ADHESIVE MEANS SECURING SAID LEADS TO SAID SURFACE.
References Cited (Backward Citations)
GB415444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |