US3292168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High resolution, head positioner system
Assignee: Unisys Corp
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Filing: 1962-08-13
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Granted: 1966-12-13
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Expires: 1982-08-13
Abstract
No abstract record available.
Inventors
- 👤 James L Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:39
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A DEVICE FOR PROPERLY ALIGNING A SENSING HEAD WITH A MAGNETIC RECORDING TRACK COMPRISING: (A) A FIRST SENSING HEAD FOR READING SIGNALS RECORDED UPON SAID MAGNETIC RECORDING TRACK; (B) A SECOND SENSING HEAD FOR SENSING THE EFFECT TO SIGNALS RECORDED IN SAID MAGNETIC RECORDING TRACK ADJACENT ONE EDGE OF SAID TRACK; (C) A THIRD SENSING HEAD FOR SENSING THE EFFECT OF SIGNALS RECORDED IN SAID MAGNETIC RECORDING TRACK ADJACENT THE OTHER EDGE OF SAID TRACK; (D) MOUNTING MEANS ARRANGED TO HOLD FIRST, SECOND AND THIRD SENSING MEANS IN DESIRED POSITIONS RELATIVE TO ONE ANOTHER AND ADAPTED FOR MOVEMENT RELATIVE TO SAID MAGNETIC RECORDING TRACK; (E) FIRST POSITIONING MEANS RESPONSIVE TO A FIRST SIGNAL TO MOVE SAID MOUNTING MEANS TO A POSITION OF APPROXIMATE ALIGNMENT WITH SAID MAGNETIC RECORDING TRACK; (F) SAID FIRST POSITIONING MEANS INCLUDING: (1) AN INPUT TERMINAL FOR RECEIVING SAID FIRST SIGNAL INDICATIVE OF SAID APPROXIMATE POSITION; (2) A DEMODULATOR AND POWER AMPLIFIER MEANS CONNECTED TO SAID TERMINAL AND ADAPTED TO PROVIDE A SIGNAL OF A CORRECT POLARITY AND AMPLITUDE;
Claim 2
Independent Claim
172 words
A DEVICE FOR PROPERLY ALIGNING A SENSING HEAD WITH A MAGNETIC RECORDING TRACK COMPRISING: (A) A FIRST SENSING HEAD FOR READING SIGNALS RECORDED UPON SAID MAGNETIC RECORDING TRACK; (B) A SECOND SENSING HEAD FOR SENSING THE EFFECT TO SIGNALS RECORDED IN SAID MAGNETIC RECORDING TRACK ADJACENT ONE EDGE OF SAID TRACK; (C) A THIRD SENSING HEAD FOR SENSING THE EFFECT OF SIGNALS RECORDED IN SAID MAGNETIC RECORDING TRACK ADJACENT THE OTHER EDGE OF SAID TRACK; (D) MOUNTING MEANS ARRANGED TO HOLD FIRST, SECOND AND THIRD SENSING MEANS IN DESIRED POSITIONS RELATIVE TO ONE ANOTHER AND ADAPTED FOR MOVEMENT RELATIVE TO SAID MAGNETIC RECORDING TRACK; (E) FIRST POSITIONING MEANS RESPONSIVE TO A FIRST SIGNAL TO MOVE SAID MOUNTING MEANS TO A POSITION OF APPROXIMATE ALIGNMENT WITH SAID MAGNETIC RECORDING TRACK; (F) SAID FIRST POSITIONING MEANS INCLUDING: (1) AN INPUT TERMINAL FOR RECEIVING SAID FIRST SIGNAL INDICATIVE OF SAID APPROXIMATE POSITION; (2) A DEMODULATOR AND POWER AMPLIFIER MEANS CONNECTED TO SAID TERMINAL AND ADAPTED TO PROVIDE A SIGNAL OF A CORRECT POLARITY AND AMPLITUDE;
References Cited (Backward Citations)
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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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |