US3138429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric signal recorders
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1961-05-16
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Granted: 1964-06-23
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Expires: 1981-05-16
Abstract
No abstract record available.
Inventors
- 👤 Austin G Cooley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:26
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/024; H04N1/032; H04N1/0323; H04N1/04; H04N1/12; H04N1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A RECORDER COMPRISING AN ELONGATED MARKING MEMBER IN THE FORM OF A FLEXIBLE BLADE, MEANS TO MOVE A PRESSURE-RESPONSIVE RECORDING BLANK PAST THE EDGE OF SAID MARKING MEMBER AND MEANS TO ACTUATE SAID MARKING MEMBER INTO MARKING RELATION WITH SAID RECORDING BLANK IN RESPONSE TO ELECTRIC SIGNALS, SAID LAST-MENTIONED MEANS COMPRISING A MAGNETIC CORE ASSEMBLY PROVIDED WITH SPACED POLES FORMING AN ARRAY SUBSTANTIALLY CO-EXTENSIVE WITH SAID FLEXIBLE BLADE, A PLURALITY OF DISTRIBUTED OVERLAPPING WINDINGS DISPOSED ALONG THE LENGTH OF SAID CORE ASSEMBLY AND MEANS TO SUCCESSIVELY APPLY SIGNAL CURRENTS TO SAID WINDINGS IN PREDETERMINED ORDER TO THEREBY MOVE THE POINT OF MARKING PRESSURE ACROSS THE BLANK.
Claim 2
Dependent Claim
106 words
A RECORDER COMPRISING AN ELONGATED MARKING MEMBER IN THE FORM OF A FLEXIBLE BLADE, MEANS TO MOVE A PRESSURE-RESPONSIVE RECORDING BLANK PAST THE EDGE OF SAID MARKING MEMBER AND MEANS TO ACTUATE SAID MARKING MEMBER INTO MARKING RELATION WITH SAID RECORDING BLANK IN RESPONSE TO ELECTRIC SIGNALS, SAID LAST-MENTIONED MEANS COMPRISING A MAGNETIC CORE ASSEMBLY PROVIDED WITH SPACED POLES FORMING AN ARRAY SUBSTANTIALLY CO-EXTENSIVE WITH SAID FLEXIBLE BLADE, A PLURALITY OF DISTRIBUTED OVERLAPPING WINDINGS DISPOSED ALONG THE LENGTH OF SAID CORE ASSEMBLY AND MEANS TO SUCCESSIVELY APPLY SIGNAL CURRENTS TO SAID WINDINGS IN PREDETERMINED ORDER TO THEREBY MOVE THE POINT OF MARKING PRESSURE ACROSS THE BLANK.
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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |