Patent US3285364A successfully refreshed from Google Patents.
US3285364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loudspeaker construction
Assignee: Ling Temco Vought Inc
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Filing: 1965-06-01
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Granted: 1966-11-15
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Expires: 1985-06-01
Abstract
No abstract record available.
Inventors
- 👤 Abraham B Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:23
CPC Classifications
H; H04; H04R; H04R7/00; H04R7/02; H04R7/12; H04R7/122; H04R7/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A UNITARY MOLDED LOUDSPEAKER DIAPHRAGM COMPRISING A SHAPED CONTINUOUS SHEET OF COMPLIANT, OPEN-CELLED, FOAMED PLASTIC MATERIAL AND A VIBRATILE SURFACE PORTION MOLDED THEREON, SAID SHEET HAVING A PERIPHERAL MOUNTING AREA FREE FROM COVERAGE BY SAID VIBRATILE SURFACE PORTION AND SAID DIAPHRAGM BEING ADAPTED TO BE MOUNTED WITHIN A SPEAKER MOUNTING FRAME BY HAVING THE PERIPHERY OF SAID SHEET SECURED TO SAID FRAME, SAID VIBRATILE SURFACE PORTION HAVING A PORTION ADAPTED FOR MOUNTING A VOICE COIL AND HAVING A FACE SUBSTANTIALLY COMPLETELY COVERED BY SAID COMPLIANT, FOAMED PLASTIC MATERIAL, SAID VIBRATILE SURFACE PORTION BEING LIGHWEIGHT, STIFF, CLOSED-CELLED, FOAMED PLASTIC MATERIAL THAT IS MOLDED IN SITU ONTO SURFACE PORTIONS OF SAID SHEET OF COMPLIANT, FOAMED PLASTIC MATERIAL INTERMEDIATE ITS PERIPHERAL MOUNTING AREA AND SAID PORTION ADAPTED FOR MOUNTING A VOICE COIL TO CAUSE MECHANICAL INTERLOCKING OF MATERIAL OF SAID VIBRATILE PORTION WITH CELLS OF SAID COMPLIANT MATERIAL, WHEREBY SAID SHEET OF COMPLIANT MATERIAL SERVES TO DAMP UNDESIRED VIBRATIONS ARISING IN AND PROVIDES MEANS FOR COMPLIANT SUPPORT OF SAID VIBRATILE SURFACE PORTION.
Claim 2
Dependent Claim
169 words
A UNITARY MOLDED LOUDSPEAKER DIAPHRAGM COMPRISING A SHAPED CONTINUOUS SHEET OF COMPLIANT, OPEN-CELLED, FOAMED PLASTIC MATERIAL AND A VIBRATILE SURFACE PORTION MOLDED THEREON, SAID SHEET HAVING A PERIPHERAL MOUNTING AREA FREE FROM COVERAGE BY SAID VIBRATILE SURFACE PORTION AND SAID DIAPHRAGM BEING ADAPTED TO BE MOUNTED WITHIN A SPEAKER MOUNTING FRAME BY HAVING THE PERIPHERY OF SAID SHEET SECURED TO SAID FRAME, SAID VIBRATILE SURFACE PORTION HAVING A PORTION ADAPTED FOR MOUNTING A VOICE COIL AND HAVING A FACE SUBSTANTIALLY COMPLETELY COVERED BY SAID COMPLIANT, FOAMED PLASTIC MATERIAL, SAID VIBRATILE SURFACE PORTION BEING LIGHWEIGHT, STIFF, CLOSED-CELLED, FOAMED PLASTIC MATERIAL THAT IS MOLDED IN SITU ONTO SURFACE PORTIONS OF SAID SHEET OF COMPLIANT, FOAMED PLASTIC MATERIAL INTERMEDIATE ITS PERIPHERAL MOUNTING AREA AND SAID PORTION ADAPTED FOR MOUNTING A VOICE COIL TO CAUSE MECHANICAL INTERLOCKING OF MATERIAL OF SAID VIBRATILE PORTION WITH CELLS OF SAID COMPLIANT MATERIAL, WHEREBY SAID SHEET OF COMPLIANT MATERIAL SERVES TO DAMP UNDESIRED VIBRATIONS ARISING IN AND PROVIDES MEANS FOR COMPLIANT SUPPORT OF SAID VIBRATILE SURFACE PORTION.
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US2905260A
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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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |