US3208056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data processing
Assignee: Laboratory For Electronics Inc
•
Filing: 1961-03-21
•
Granted: 1965-09-21
•
Expires: 1981-03-21
Abstract
No abstract record available.
Inventors
- 👤 Robert T Pearson
- 👤 William J Gorman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:48
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/021; G11B17/32; G11B5/00; G11B5/48; G11B5/58; G11B5/60; G11B5/6005; G11B5/74; G11B5/82; G11B5/825
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A MAGNETIC RECORDER IN WHICH A GAP BETWEEN A MAGNETIC RECORDING MEDIUM AND EACH ONE OF A PLURALITY OF RADIALLY DISPOSED MAGNETIC TRANSDUCERS MAY BE VARIED COMPRISING, A FLEXIBLE MAGNETIC RECORDING DISC, A PLURALITY OF MAGNETIC TRANSDUCERS AND A STABLILIZING PLATE IMMERSED IN A FLUID, MEANS FOR ROTATING SAID DISC IN PROXIMITY TO SAID PLATE, MEANS FOR MOUNTING EACH ONE OF SAID PLURALITY OF MAGNETIC TRANSDUCERS FLUSH WITH THE FACE OF SAID PLATE AT A DIFFERENT DISTANCE RADIALLY THEREOF, AND MEANS FOR REGULATING THE FLUID PASSING BETWEEN SAID DISC AND SAID STABILIZING PLATE AND SAID PLURALITY OF MAGNETIC TRANSDUCERS, SAID LAST NAMED MEANS INCLUDING A THEREMALLY SENSITIVE VALVE AND A THROTTLE VALVE TO REGULATE THE PRESSURE OF THE FLUID ENTERING BETWEEN SAID DISC AND SAID STABILIZING PLATE.
Claim 2
Dependent Claim
127 words
A MAGNETIC RECORDER IN WHICH A GAP BETWEEN A MAGNETIC RECORDING MEDIUM AND EACH ONE OF A PLURALITY OF RADIALLY DISPOSED MAGNETIC TRANSDUCERS MAY BE VARIED COMPRISING, A FLEXIBLE MAGNETIC RECORDING DISC, A PLURALITY OF MAGNETIC TRANSDUCERS AND A STABLILIZING PLATE IMMERSED IN A FLUID, MEANS FOR ROTATING SAID DISC IN PROXIMITY TO SAID PLATE, MEANS FOR MOUNTING EACH ONE OF SAID PLURALITY OF MAGNETIC TRANSDUCERS FLUSH WITH THE FACE OF SAID PLATE AT A DIFFERENT DISTANCE RADIALLY THEREOF, AND MEANS FOR REGULATING THE FLUID PASSING BETWEEN SAID DISC AND SAID STABILIZING PLATE AND SAID PLURALITY OF MAGNETIC TRANSDUCERS, SAID LAST NAMED MEANS INCLUDING A THEREMALLY SENSITIVE VALVE AND A THROTTLE VALVE TO REGULATE THE PRESSURE OF THE FLUID ENTERING BETWEEN SAID DISC AND SAID STABILIZING PLATE.
References Cited (Backward Citations)
US2899260A
Cited
US3131395A
Cited
US2950353A
Cited
US3108259A
Cited
US3001850A
Cited
US3110889A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |