US3320600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape velocity change detection circuit
Assignee: International Business Machines Corp
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Filing: 1963-06-27
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Granted: 1967-05-16
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Expires: 1983-06-27
Abstract
No abstract record available.
Inventors
- 👤 Lewis L Headrick
- 👤 Earl W Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:26
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/46; G11B15/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A VELOCITY CHANGE DETECTION CIRCUIT COMPRISING: A TIME MEASURING MEANS FOR BEING ACTUATED BY AT LEAST ONE PREDETERMINED TIME INTERVAL, MEANS FOR WRITING AT LEAST TWO INDICATIONS ON A SURFACE UNDER CONTROL OF SAID TIME MEASURING MEANS, WITH SAID INDICATIONS BEING SPACED FROM EACH OTHER BY THE PREDETERMINED TIME INTERVAL AS THEY ARE WRITTEN, READING MEANS HAVING A PREDETERMINED SPACED RELATIONSHIP FROM SAID MEANS FOR WRITING, SAID READING MEANS FOLLOWING SAID WRITING MEANS AND SENSING BOTH OF SAID INDICATIONS IN SUBSEQUENT TIME RELATIONSHIP, SAID TIME MEASURING MEANS BEING ACTUATED BY THE FIRST ONE OF SAID INDICATIONS BEING READ, AND MEANS FOR COMPARING THE TIME OF READING SAID SECOND INDICATION WITH THE ACTUATION OF SAID TIME MEASURING MEANS AND PROVIDING AN INDICATION THEREFROM.
Claim 2
Dependent Claim
122 words
A VELOCITY CHANGE DETECTION CIRCUIT COMPRISING: A TIME MEASURING MEANS FOR BEING ACTUATED BY AT LEAST ONE PREDETERMINED TIME INTERVAL, MEANS FOR WRITING AT LEAST TWO INDICATIONS ON A SURFACE UNDER CONTROL OF SAID TIME MEASURING MEANS, WITH SAID INDICATIONS BEING SPACED FROM EACH OTHER BY THE PREDETERMINED TIME INTERVAL AS THEY ARE WRITTEN, READING MEANS HAVING A PREDETERMINED SPACED RELATIONSHIP FROM SAID MEANS FOR WRITING, SAID READING MEANS FOLLOWING SAID WRITING MEANS AND SENSING BOTH OF SAID INDICATIONS IN SUBSEQUENT TIME RELATIONSHIP, SAID TIME MEASURING MEANS BEING ACTUATED BY THE FIRST ONE OF SAID INDICATIONS BEING READ, AND MEANS FOR COMPARING THE TIME OF READING SAID SECOND INDICATION WITH THE ACTUATION OF SAID TIME MEASURING MEANS AND PROVIDING AN INDICATION THEREFROM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |