US3281803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic tape transducer apparatus
Assignee: SCM Corp
•
Filing: 1961-07-26
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Granted: 1966-10-25
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Expires: 1981-07-26
Abstract
No abstract record available.
Inventors
- 👤 Edward F Kleinschmidt
- 👤 John W Ehrlich
- 👤 Edward E Podwojski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:48
CPC Classifications
G; G11; G11B; G11B21/00; G11B21/02; G11B21/04; G11B15/00; G11B15/18; G11B15/20; G11B5/00; G11B5/48; H; H04; H04L; H04L13/00; H04L13/02; H04L13/08; H04L17/00; H04L17/02; H04L17/04; H04L17/16; H04L17/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
IN A RECORDING APPARATUS COMPRISING A TAPE FEED REEL, A TAPE TAKE-UP REEL, A MAGNETIC TAPE EXTENDING FROM SAID FEED REEL TO SAID TAKE-UP REEL, A RECORDING HEAD IN OPERATIVE RELATION WITH SAID TAPE, AN ERASE HEAD OPERATIVELY ASSOCIATED WITH SAID TAPE AND SPACED FROM SAID RECORDING HEAD, MEANS FOR RECORDING INFORMATION ACROSS THE WIDTH OF THE TAPE BY SAID RECORDING HEAD WHILE SAID TAPE IS STATIONARY, MEANS FOR ADVANCING SAID TAPE IN STEP INCREMENT MOVEMENTS FOLLOWING EACH RECORDING OPERATION, A MECHANISM FOR DISENGAGING SAID MEANS FOR ADVANCING TAPE IN STEP INCREMENT MOVEMENTS DURING THE REWIND OPERATION OF THE TAPE, AND MEANS LOCKING SAID MECHANISM IN OPERATING CONDITION AT THE BEGINNING OF A RECORDING OR PLAYBACK OPERATION FOLLOWING COMPLETION OF THE REWIND OPERATION TO ENABLE THE TAPE TO ADVANCE A DISTANCE AT LEAST AS GREAT AS THE DISTANCE BETWEEN THE ERASING HEAD AND THE RECORDING HEAD BEFORE ENERGIZING THE RECORDING HEAD.
Claim 2
Dependent Claim
151 words
IN A RECORDING APPARATUS COMPRISING A TAPE FEED REEL, A TAPE TAKE-UP REEL, A MAGNETIC TAPE EXTENDING FROM SAID FEED REEL TO SAID TAKE-UP REEL, A RECORDING HEAD IN OPERATIVE RELATION WITH SAID TAPE, AN ERASE HEAD OPERATIVELY ASSOCIATED WITH SAID TAPE AND SPACED FROM SAID RECORDING HEAD, MEANS FOR RECORDING INFORMATION ACROSS THE WIDTH OF THE TAPE BY SAID RECORDING HEAD WHILE SAID TAPE IS STATIONARY, MEANS FOR ADVANCING SAID TAPE IN STEP INCREMENT MOVEMENTS FOLLOWING EACH RECORDING OPERATION, A MECHANISM FOR DISENGAGING SAID MEANS FOR ADVANCING TAPE IN STEP INCREMENT MOVEMENTS DURING THE REWIND OPERATION OF THE TAPE, AND MEANS LOCKING SAID MECHANISM IN OPERATING CONDITION AT THE BEGINNING OF A RECORDING OR PLAYBACK OPERATION FOLLOWING COMPLETION OF THE REWIND OPERATION TO ENABLE THE TAPE TO ADVANCE A DISTANCE AT LEAST AS GREAT AS THE DISTANCE BETWEEN THE ERASING HEAD AND THE RECORDING HEAD BEFORE ENERGIZING THE RECORDING HEAD.
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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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |