Patent US3184754A successfully refreshed from Google Patents.
US3184754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording oscillograph
Assignee: ILLINOIS TESTING LABORATORIES
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Filing: 1962-12-26
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Granted: 1965-05-18
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Expires: 1982-12-26
Abstract
No abstract record available.
Inventors
- 👤 Veikko K Peltola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:19
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
APPARATUS FOR ESTABLISHING A RECORD OF THE VARIATIONS OF AN ELECTRICAL SIGNAL WHICH COMPRISES, A SCRIBE MEMBER FOR ESTABLISHING SAID RECORD, A NON-MAGNETIC, CYLINDRICAL FORM MEMBER, MOUNTING MEANS FOR MECHANICALLY LINKING SAID FORM MEMBER TO SAID SCRIBE MEMBER, A FIRST, MAGNECTICALLY PERMEABLE CORE MEMBER DISPOSED INTERIORLY OF SAID CYLINDRICAL MEMBER AND COAXIALLY THEREWITH, A MAGNETICALLY PERMEABLE SHELL MEMBER DISPOSED EXTERIORLY OF SAID NON-MAGNETIC FORM MEMBER AND COAXIALLY WITH SAID FIRST CORE MEMBER, AND MAGNETIZING MEANS CONNECTED IN SERIES MAGNETIC CIRCUIT WITH SAID SHELL MEMBER AND SAID CORE MEMBER FOR ESTABLISHING A MAGNETIC FLUX PATH HAVING A GAP EXTENDING RADIALLY BETWEEN SAID CORE MEMBER AND SAID SHELL MEMBER FOR LINKING SAID CYLINDRICAL FORM MEMBER, MEANS MOUNTING SAID CYLINDRICAL FORM MEMBER FOR MOVEMENT ALONG AN AXIS COMMON WITH SAID CORE MEMBER AND SAID SHELL MEMBER, A WINDING DISPOSED ABOUT SAID FORM MEMBER, AND MEANS FOR APPLYING SAID ELECTRICAL SIGNAL IN CIRCUIT WITH SAID WINDING, WHEREBY SAID SCRIBE MEMBER IS URGED TO MOVE TRANSVERSELY TO THE DIRECTION OF MAGNETIC FLUX PASSING RADIALLY THROUGH SAID GAP UPON APPLICATION OF SAID SIGNAL TO SAID WINDING.
Claim 2
Dependent Claim
180 words
APPARATUS FOR ESTABLISHING A RECORD OF THE VARIATIONS OF AN ELECTRICAL SIGNAL WHICH COMPRISES, A SCRIBE MEMBER FOR ESTABLISHING SAID RECORD, A NON-MAGNETIC, CYLINDRICAL FORM MEMBER, MOUNTING MEANS FOR MECHANICALLY LINKING SAID FORM MEMBER TO SAID SCRIBE MEMBER, A FIRST, MAGNECTICALLY PERMEABLE CORE MEMBER DISPOSED INTERIORLY OF SAID CYLINDRICAL MEMBER AND COAXIALLY THEREWITH, A MAGNETICALLY PERMEABLE SHELL MEMBER DISPOSED EXTERIORLY OF SAID NON-MAGNETIC FORM MEMBER AND COAXIALLY WITH SAID FIRST CORE MEMBER, AND MAGNETIZING MEANS CONNECTED IN SERIES MAGNETIC CIRCUIT WITH SAID SHELL MEMBER AND SAID CORE MEMBER FOR ESTABLISHING A MAGNETIC FLUX PATH HAVING A GAP EXTENDING RADIALLY BETWEEN SAID CORE MEMBER AND SAID SHELL MEMBER FOR LINKING SAID CYLINDRICAL FORM MEMBER, MEANS MOUNTING SAID CYLINDRICAL FORM MEMBER FOR MOVEMENT ALONG AN AXIS COMMON WITH SAID CORE MEMBER AND SAID SHELL MEMBER, A WINDING DISPOSED ABOUT SAID FORM MEMBER, AND MEANS FOR APPLYING SAID ELECTRICAL SIGNAL IN CIRCUIT WITH SAID WINDING, WHEREBY SAID SCRIBE MEMBER IS URGED TO MOVE TRANSVERSELY TO THE DIRECTION OF MAGNETIC FLUX PASSING RADIALLY THROUGH SAID GAP UPON APPLICATION OF SAID SIGNAL TO SAID WINDING.
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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) | 1968-05-17 | 1968-11-16 | 1969-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-17 | 1972-11-16 | 1973-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-17 | 1976-11-16 | 1977-05-18 | $7700.00 | Window Closed / Lapsed |