Patent US3185484A successfully refreshed from Google Patents.
US3185484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Index rotor with plural heads for magnetic tape recorders
Assignee: Individual
•
Filing: 1962-07-20
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Granted: 1965-05-25
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Expires: 1982-07-20
Abstract
No abstract record available.
Inventors
- 👤 Lawrence T Burdeno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:28
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
IN A TAPE RECORDING APPARATUS PROVIDED WITH A MOVABLE TAPE, AN INDEX ROTOR COMPRISING: A BASE PLATE; A BODY SWINGABLY MOUNTED ON SAID PLATE ADJACENT SAID TAPE; A PLURAILITY OF RECORDER HEADS ON SAID BOSY, INCLUDING AN ERASE HEAD, A RECORD HEAD AND A PLAY-BACK HEAD; MEANS FOR SELECTIVELY SWINGING SAID BODY TO VARIOUS INDEXED POSITIONS FOR MOVING AT LEAST ONE OF SAID HEADS INTO OPERATIVE ENGAGEMENT WITH THE TAPE, AND OUT OF ENGAGING THERE-
Claim 2
Dependent Claim
75 words
IN A TAPE RECORDING APPARATUS PROVIDED WITH A MOVABLE TAPE, AN INDEX ROTOR COMPRISING: A BASE PLATE; A BODY SWINGABLY MOUNTED ON SAID PLATE ADJACENT SAID TAPE; A PLURAILITY OF RECORDER HEADS ON SAID BOSY, INCLUDING AN ERASE HEAD, A RECORD HEAD AND A PLAY-BACK HEAD; MEANS FOR SELECTIVELY SWINGING SAID BODY TO VARIOUS INDEXED POSITIONS FOR MOVING AT LEAST ONE OF SAID HEADS INTO OPERATIVE ENGAGEMENT WITH THE TAPE, AND OUT OF ENGAGING THERE-
References Cited (Backward Citations)
US2540406A
Cited
US2793253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-24 | 1968-11-23 | 1969-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-24 | 1972-11-23 | 1973-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-24 | 1976-11-23 | 1977-05-25 | $7700.00 | Window Closed / Lapsed |