US3219140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatable loudspeaker
Assignee: Circle O Phonic Inc
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Filing: 1964-10-07
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Granted: 1965-11-23
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Expires: 1984-10-07
Abstract
No abstract record available.
Inventors
- 👤 Mizrahi Eli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:14
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/32; H04R1/323
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
AN ELECTRICAL LOUDSPEAKER APPARATUS COMPRISING AN UPRIGHT BASE MEMBER HAVING A U-SHAPED SLOT IN ITS TOP, A CURVATURED C-SHAPED MEMBER DISPOSED SLIDABLY IN SAID U-SHAPED SLOT OF SAID BASE UPRIGHT, A SHAFT ROTATABLY MOUNTED BETWEEN THE ENDS OF THE C-SHAPED MEMBER, A COLLAR ADAPTED TO CONDUCT ELECTRICAL CURRENT DISPOSED ABOUT SAID SHAFT AND FIXED THERETO, MEANS FOR ELECTRICALLY INSULATING SAID COLLAR FROM SAID SHAFT, MEANS FOR ROTATING SAID SHAFT, AN ELECTRICITY CONDUCTING STATIONARY CLAMP SHOE MEANS DISPOSED IN FRICTIONAL RELATIONSHIP AGAINST SAID COLLAR, MEANS FOR URGING SAID STATIONARY CLAMP SHOE IN FIRM CONTACT WITH SAID ROTATING SHAFT, A LOUDSPEAKER FIXEDLY SECURED TO SAID SHAFT, AND AN ELECTRICAL CONDUIT DISPOSED BETWEEN SAD COLLAR AND SAID HORN FOR CONDUCTING ELECTRICAL IMPULSES THERETO.
Claim 2
Dependent Claim
120 words
AN ELECTRICAL LOUDSPEAKER APPARATUS COMPRISING AN UPRIGHT BASE MEMBER HAVING A U-SHAPED SLOT IN ITS TOP, A CURVATURED C-SHAPED MEMBER DISPOSED SLIDABLY IN SAID U-SHAPED SLOT OF SAID BASE UPRIGHT, A SHAFT ROTATABLY MOUNTED BETWEEN THE ENDS OF THE C-SHAPED MEMBER, A COLLAR ADAPTED TO CONDUCT ELECTRICAL CURRENT DISPOSED ABOUT SAID SHAFT AND FIXED THERETO, MEANS FOR ELECTRICALLY INSULATING SAID COLLAR FROM SAID SHAFT, MEANS FOR ROTATING SAID SHAFT, AN ELECTRICITY CONDUCTING STATIONARY CLAMP SHOE MEANS DISPOSED IN FRICTIONAL RELATIONSHIP AGAINST SAID COLLAR, MEANS FOR URGING SAID STATIONARY CLAMP SHOE IN FIRM CONTACT WITH SAID ROTATING SHAFT, A LOUDSPEAKER FIXEDLY SECURED TO SAID SHAFT, AND AN ELECTRICAL CONDUIT DISPOSED BETWEEN SAD COLLAR AND SAID HORN FOR CONDUCTING ELECTRICAL IMPULSES THERETO.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |