US3188399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic transducing assembly
Assignee: Ampex Corp
•
Filing: 1960-11-28
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Granted: 1965-06-08
•
Expires: 1980-11-28
Abstract
No abstract record available.
Inventors
- 👤 Donald F Eldridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:46
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/49; G11B5/4907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A MAGNETIC TRANSDUCING ASSEMBLY COMPRISING: A STATIONARY MAGNETIC CONTROL ELEMENT; A MAGNETIC TRANSDUCER MAGNETICALLY COUPLED TO SAID ELEMENT; SAID TRANSDUCER HAVING A WIDE TRANSDUCER PATH INCLUDING A NONMAGNETIC GAP, SAID TRANSDURCER PATH NORMALLY HAVING A VERY HIGH RELUCTANCE, SAID CONTROL ELEMENT COUPLED TO SAID TRANSDUCER AND FOR ENABLING SMALL PORTIONS OF SAID TRNASDUCER PATH TO ASSUME A VERY LOW RELUCTANCE IN A PREDETERMINED MANNER; AND MEANS COUPLED TO SAID TRANSDUCER FOR SUPPLYING AN INFORMATION SIGNAL, MEANS COUPLED TO SAID CONTROL ELEMENT FOR ACTIVATING SAID CONTROL ELEMENT WITH A PREDETERMINED CONTROL SIGNAL SO THAT THE TRANS-
Claim 2
Dependent Claim
95 words
A MAGNETIC TRANSDUCING ASSEMBLY COMPRISING: A STATIONARY MAGNETIC CONTROL ELEMENT; A MAGNETIC TRANSDUCER MAGNETICALLY COUPLED TO SAID ELEMENT; SAID TRANSDUCER HAVING A WIDE TRANSDUCER PATH INCLUDING A NONMAGNETIC GAP, SAID TRANSDURCER PATH NORMALLY HAVING A VERY HIGH RELUCTANCE, SAID CONTROL ELEMENT COUPLED TO SAID TRANSDUCER AND FOR ENABLING SMALL PORTIONS OF SAID TRNASDUCER PATH TO ASSUME A VERY LOW RELUCTANCE IN A PREDETERMINED MANNER; AND MEANS COUPLED TO SAID TRANSDUCER FOR SUPPLYING AN INFORMATION SIGNAL, MEANS COUPLED TO SAID CONTROL ELEMENT FOR ACTIVATING SAID CONTROL ELEMENT WITH A PREDETERMINED CONTROL SIGNAL SO THAT THE TRANS-
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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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |