US3154173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loudspeaker cone suspension
Assignee: General Electric Co
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Filing: 1962-11-19
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Granted: 1964-10-27
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Expires: 1982-11-19
Abstract
No abstract record available.
Inventors
- 👤 Adelore F Petrie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:38
CPC Classifications
H; H04; H04R; H04R7/00; H04R7/16; H04R7/18; H04R7/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A LOUDSPEAKER CONE SUSPENSION COMPRISING RESILIENT MATERIAL SHAPED TO PROVIDE AT LEAST THREE CONCENTRICALLY ARRANGED SYMMETRICAL CORRUGATIONS IN THE OUTERMOST REGION THEREOF, EACH OF SAID CORRUGATIONS INCLUDING AT LEAST ONE SUBSTANTIALLY CURVED PORTION OF A PREDETERMINED RADIUS OF CURVATURE, THE CURVED PORTIONS OF THE THREE CORRUGATIONS FACING IN THE SAME GENERAL DIRECTION, AT LEAST ONE OF THE INTERMEDIATE CORRUGATIONS HAVING A CURVED PORTION OF A RADIUS OF CURVATURE WHICH IS GREATER THAN THE RADII OF CURVATURE OF THE END CORRUGATIONS.
Claim 2
Dependent Claim
80 words
A LOUDSPEAKER CONE SUSPENSION COMPRISING RESILIENT MATERIAL SHAPED TO PROVIDE AT LEAST THREE CONCENTRICALLY ARRANGED SYMMETRICAL CORRUGATIONS IN THE OUTERMOST REGION THEREOF, EACH OF SAID CORRUGATIONS INCLUDING AT LEAST ONE SUBSTANTIALLY CURVED PORTION OF A PREDETERMINED RADIUS OF CURVATURE, THE CURVED PORTIONS OF THE THREE CORRUGATIONS FACING IN THE SAME GENERAL DIRECTION, AT LEAST ONE OF THE INTERMEDIATE CORRUGATIONS HAVING A CURVED PORTION OF A RADIUS OF CURVATURE WHICH IS GREATER THAN THE RADII OF CURVATURE OF THE END CORRUGATIONS.
References Cited (Backward Citations)
US1820585A
Cited
DE1001326B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |