US3177476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Information storage apparatus utilizing a record of internally reflective, light conducting material
Assignee: RCA Corp
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Filing: 1961-05-29
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Granted: 1965-04-06
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Expires: 1981-05-29
Abstract
No abstract record available.
Inventors
- 👤 Howard W Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:56
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/30; G11B23/34; G11B17/00; G11B17/005; G11B5/00; G11B5/012
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
IN A RECORD TRANSPORT SYSTEM IN WHICH A RECORD TRAVELS ALONG A PATH, SAID RECORD BEING CONSTITUTED AT LEAST IN PART OF INTERNALLY REFLECTIVE, LIGHT CONDUCTING MATERIAL HAVING AN EXPOSED PORTION WHICH DEFINES A TRACK EXTENDING ALONG SAID RECORD, SAID TRACK HAVING AREAS OF DIFFERENT LIGHT TRANSMITTING PORPERTIES, AN INDEXING SYSTEM WHICH COMPRISES AN INDEX STATION DISPOSED ALONG SAID PATH AND EXPOSED TO ILLUMINATION FROM SAID TRACK, A SOURCE OF LIGHT DIRECTED AT SAID RECORD FOR ILLUMINATING SAID MATERIAL AND THEREBY ILLULMINATING SAID TRACK, MEANS DISPOSED AT SAID INDEX STATION FOR DISTINGUISHING BETWEEN LIGHT AND DARK AREAS OF SAID TRACK, AND SIGNAL GENERATING MEANS RESPONSIVE TO SAID LIGHT AND DARK AREA DISTINGUISHING MEANS FOR GENERATING A SIGNAL WHICH VARIES IN ACCORDANCE WITH SAID LIGHT AND DARK AREAS.
Claim 2
Dependent Claim
127 words
IN A RECORD TRANSPORT SYSTEM IN WHICH A RECORD TRAVELS ALONG A PATH, SAID RECORD BEING CONSTITUTED AT LEAST IN PART OF INTERNALLY REFLECTIVE, LIGHT CONDUCTING MATERIAL HAVING AN EXPOSED PORTION WHICH DEFINES A TRACK EXTENDING ALONG SAID RECORD, SAID TRACK HAVING AREAS OF DIFFERENT LIGHT TRANSMITTING PORPERTIES, AN INDEXING SYSTEM WHICH COMPRISES AN INDEX STATION DISPOSED ALONG SAID PATH AND EXPOSED TO ILLUMINATION FROM SAID TRACK, A SOURCE OF LIGHT DIRECTED AT SAID RECORD FOR ILLUMINATING SAID MATERIAL AND THEREBY ILLULMINATING SAID TRACK, MEANS DISPOSED AT SAID INDEX STATION FOR DISTINGUISHING BETWEEN LIGHT AND DARK AREAS OF SAID TRACK, AND SIGNAL GENERATING MEANS RESPONSIVE TO SAID LIGHT AND DARK AREA DISTINGUISHING MEANS FOR GENERATING A SIGNAL WHICH VARIES IN ACCORDANCE WITH SAID LIGHT AND DARK AREAS.
References Cited (Backward Citations)
US2567092A
Cited
US2901730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |