US3229269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple-disc type random access store
Assignee: Plessey Overseas Ltd
•
Filing: 1962-01-10
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Granted: 1966-01-11
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Expires: 1982-01-10
Abstract
No abstract record available.
Inventors
- 👤 Namenyi-Katz Laszlo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:54
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/0014; G11B23/0021; G11B23/0028; G11B23/0035; G11B5/00; G11B5/48; G11B5/54; G11B5/55; G11B5/5521; G11B5/74; G11B5/82; G11B5/825
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
188 words
IN A RANDOM-ACCESS STORE OF THE KIND INCLUDING A PLURALITY OF COAXIALLY ARRANGED DISC HAVING ALIGNABLE APERTURE ADAPTED TO FORM A PASSAGE, A TRANSDUCER HEAD MOVABLE ALONG SUCH PASSAGE INTO INDIVIDUAL COOPERATION WITH A SELECTED DISC, AND MEANS FOR ROTATING A SELECTED DISC ABOUT ITS AXIS TO EFFECT TRANSDUCTION ALONG A TRACK ON SUCH DISC, THE COMBINATION COMPRISING A HUB PORTION ON EACH DISC, SAID HUB PORTION BEING CONNECTED WITH THE DISC FOR COMMON ROTATION THEREWITH AND FORMED WITH A KEYWAY, SUPPORT SPINDLE MEANS ON WHICH THE HUB PORTIONS OF ALL OF A PLURALITY OF DISCS ARE SUPPORTED FOR RELATIVE AXIAL SLIDING MOVEMENT, A DRIVER KEY FITTING THE KEYWAY OF EACH HUB PORTION AND OF AN AXIAL LENGTH NOT EXCEEDING THAT OF EACH HUB PORTION, SAID KEY BEING ASSOCIATED WITH THE SUPPORT SPINDLE TO ENGAGE THE KEYWAY OF THE HUB PORTION WHEN SAID HUB PORTION IS IN A PREDETERMINED POSITION ON THE SPINDLE, MEANS FOR PLACING A SELECTED DISC IN SAID PREDETERMINED POSITION, MEANS FOR ROTATING THE DRIVER KEY ABOUT THE AXIS OF THE SPINDLE TO ROTATE THE SELECTED DISC, AND, MEANS PREVENTING ROTATION OF THE NON-SELECTED DISCS.
Claim 2
Dependent Claim
188 words
IN A RANDOM-ACCESS STORE OF THE KIND INCLUDING A PLURALITY OF COAXIALLY ARRANGED DISC HAVING ALIGNABLE APERTURE ADAPTED TO FORM A PASSAGE, A TRANSDUCER HEAD MOVABLE ALONG SUCH PASSAGE INTO INDIVIDUAL COOPERATION WITH A SELECTED DISC, AND MEANS FOR ROTATING A SELECTED DISC ABOUT ITS AXIS TO EFFECT TRANSDUCTION ALONG A TRACK ON SUCH DISC, THE COMBINATION COMPRISING A HUB PORTION ON EACH DISC, SAID HUB PORTION BEING CONNECTED WITH THE DISC FOR COMMON ROTATION THEREWITH AND FORMED WITH A KEYWAY, SUPPORT SPINDLE MEANS ON WHICH THE HUB PORTIONS OF ALL OF A PLURALITY OF DISCS ARE SUPPORTED FOR RELATIVE AXIAL SLIDING MOVEMENT, A DRIVER KEY FITTING THE KEYWAY OF EACH HUB PORTION AND OF AN AXIAL LENGTH NOT EXCEEDING THAT OF EACH HUB PORTION, SAID KEY BEING ASSOCIATED WITH THE SUPPORT SPINDLE TO ENGAGE THE KEYWAY OF THE HUB PORTION WHEN SAID HUB PORTION IS IN A PREDETERMINED POSITION ON THE SPINDLE, MEANS FOR PLACING A SELECTED DISC IN SAID PREDETERMINED POSITION, MEANS FOR ROTATING THE DRIVER KEY ABOUT THE AXIS OF THE SPINDLE TO ROTATE THE SELECTED DISC, AND, MEANS PREVENTING ROTATION OF THE NON-SELECTED DISCS.
References Cited (Backward Citations)
US2690913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |