Patent US3462830A successfully refreshed from Google Patents.
US3462830A
Expired / Lapsed
US
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Method of making a magnetometer
Assignee: Edgar Sharpe & Associates Ltd
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Filing: 1964-10-29
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Granted: 1969-08-26
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Expires: 1984-10-29
Abstract
No abstract record available.
Inventors
- 👤 Edgar J Sharpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:34
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/02; G01R33/038; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
A METHOD OF MAKING A MAGNETIC SEARCH INSTRUMENT HAVING A CHAMBER, A SEARCH MAGNET SYSTEM MOUNTED FOR PIVOTAL MOVEMENT IN SAID CHAMBER, SAID SEARCH MAGNET SYSTEM HAVING A SEARCH MAGNET THEREIN ADAPTED TO RESPONDED TO A MAGNETIC FIELD TO BE EXPLORED, A DAMPING LIQUID SOLUTION IN SAID CHAMBER HAVING AN INSTRUMENT SPECIFIC GRAVITY SUCH THAT THE MASS OF THE LIQUID DISPLACED BY SAID SEARCH MAGNET SYSTEM IS SUBSTANTIALLY EQUAL TO THE MASS OF SAID SEARCH MAGNET SYSTEM, INCLUDING THE STEPS OF MECHANICALLY BALANCING SAID SEARCH MAGNET SYSTEM, FLOATING THE BALANCED SEARCH SYSTEM IN A CONTAINED FIRST DAMPING LIQUID HAVING A GREATER SPECIFIC GRAVITY THAN SAID BALANCED SEARCH SYSTEM, ADDING AND MIXING WITH SAID FIRST DAMPING LIQUID A SECOND MISCIBLE DAMPING LIQUID HAVING A SPECFIC GRAVITY LESS THAN SAID BALANCED SEARCH SYSTEM UNTIL SAID BALANCED SEARCH SYSTEM CHANGES ITS CONDITION FROM FLOATING TO COMPLETE SUBMERSION TO THEREBY RENDER SAID DAMPING SOLUTION, REMOVING THE BALANCED SEARCH SYSTEM FROM SAID SOLUTION AND PIVOTALLY MOUNTING SAME IN SAID CHAMBER, AND FILLING SAID CHAMBER WITH SAID SOLUTION FOR COMPLETELY SUBMERGING THE MOUNTED BALANCED SEARCH SYSTEM.
Claim 2
Independent Claim
180 words
A METHOD OF MAKING A MAGNETIC SEARCH INSTRUMENT HAVING A CHAMBER, A SEARCH MAGNET SYSTEM MOUNTED FOR PIVOTAL MOVEMENT IN SAID CHAMBER, SAID SEARCH MAGNET SYSTEM HAVING A SEARCH MAGNET THEREIN ADAPTED TO RESPONDED TO A MAGNETIC FIELD TO BE EXPLORED, A DAMPING LIQUID SOLUTION IN SAID CHAMBER HAVING AN INSTRUMENT SPECIFIC GRAVITY SUCH THAT THE MASS OF THE LIQUID DISPLACED BY SAID SEARCH MAGNET SYSTEM IS SUBSTANTIALLY EQUAL TO THE MASS OF SAID SEARCH MAGNET SYSTEM, INCLUDING THE STEPS OF MECHANICALLY BALANCING SAID SEARCH MAGNET SYSTEM, FLOATING THE BALANCED SEARCH SYSTEM IN A CONTAINED FIRST DAMPING LIQUID HAVING A GREATER SPECIFIC GRAVITY THAN SAID BALANCED SEARCH SYSTEM, ADDING AND MIXING WITH SAID FIRST DAMPING LIQUID A SECOND MISCIBLE DAMPING LIQUID HAVING A SPECFIC GRAVITY LESS THAN SAID BALANCED SEARCH SYSTEM UNTIL SAID BALANCED SEARCH SYSTEM CHANGES ITS CONDITION FROM FLOATING TO COMPLETE SUBMERSION TO THEREBY RENDER SAID DAMPING SOLUTION, REMOVING THE BALANCED SEARCH SYSTEM FROM SAID SOLUTION AND PIVOTALLY MOUNTING SAME IN SAID CHAMBER, AND FILLING SAID CHAMBER WITH SAID SOLUTION FOR COMPLETELY SUBMERGING THE MOUNTED BALANCED SEARCH SYSTEM.
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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) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |