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US3156918A
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Record eccentricity detector and centering arrangement for recording machines
Assignee: International Business Machines Corp
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Filing: 1960-12-30
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Granted: 1964-11-10
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Expires: 1980-12-30
Abstract
No abstract record available.
Inventors
- 👤 Donald H Cronquist
- 👤 Robert C Treseder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:08
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/26; G01B11/27; G01B11/272; G06; G06K; G06K17/00; G11; G11B; G11B17/00; G11B17/02; G11B17/022; G11B17/025; G11B17/34; G11B5/00; G11B5/48; G11B5/52; G11B5/53; Y; Y10; Y10S; Y10S221/00; Y10S221/01
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
133 words
IN A RECORDING APPARATUS HAVING A RECORDING HEAD ARRANGED TO ROTATE ABOUT A PREDETERMINED AXIS, AN ARRANGEMENT FOR DETECTING ECCENTRICITIES IN THE POSITION OF RECORDS PLACED UPON THE APPARATUS WITH REGARD TO SAID PREDETERMINED AXIS, COMPRISING IN COMBINATION IN THE RECORD PLATE A NON-CIRCULAR HOLE HAVING SYMMETRICALLY SHAPED OPPOSITE SECTORS AND IN THE RECORDING APPARATUS A SOURCE OF LIGHT, MEANS FOR MOVING A BEAM FROM SAID SOURCE OF LIGHT ABOUT SAID AXIS OF ROTATION IN A CIRCULAR ORBIT ADJACENT THE EDGE OF THE HOLE OF A RECORD PLATE PLACED UPON THE APPARATUS, LIGHT-SENSITIVE MEANS, MEANS FOR DIRECTING SAID LIGHT BEAM UPON PASSAGE THROUGH SAID HOLE ONTO SAID LIGHT-SENSITIVE MEANS, AND MEANS FOR COMPARING THE TIMES OF ILLUMINATION OF SAID LIGHT-SENSITIVE MEANS BY SAID BEAM IN OPPOSITE SECTORS OF THE ORBIT OF THE BEAM.
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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) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |