Patent US3209823A successfully refreshed from Google Patents.
US3209823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Core orientation
Assignee: Individual
•
Filing: 1960-04-27
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Granted: 1965-10-05
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Expires: 1980-04-27
Abstract
No abstract record available.
Inventors
- 👤 David E Winkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:24
CPC Classifications
E; E21; E21B; E21B25/00; E21B25/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
205 words
THE METHOD OF UTILIZING THE EARTH''S MAGNETIC FIELD FOR DETERMINING THE ORIENTATION OF A CORE TAKEN IN CORE DRILLING WHICH COMPRISING MIXING A MASS OF FINELY DIVIDED MAGNETIC PARTICLES HAVING HIGH COERCIVE FORCE IN A LIQUID HAVING THE CHARACTERISTIC OF SOLIDIFYING WITHIN A PREDETERMINED PERIOD OF TIME AND HAVING A FURTHER CHARACTERISTIC OF ADHERING SECURELY TO ROCK SURFACES, PLACING A BODY OF THE LIQUID MIXTURE ON THE BOTTOM OF HE HOLE TO BE CORED, WITHDRAWING FROM THE ZONE OF THE BOTTOM OF THE HOLE ALL MAGNETIC MATERIAL OTHER THAN THAT IN SAID MIXTURE WHEREBY THE MAGNETIC PARTICLES ARE ALLOWED TO ALIGN WITH THE EARTH''S MAGNETIC FIELD, ALLOWING THE LIQUID TO SOLIDIFY, CORING THE HOLE, REMOVING THE CORE WITH THE SOLIDFIED MIXTURE ADHERING THERETO, PLACING AN IDENTIFYING MARK ON THE SURFACE OF THE SOLIDFIED MIXTURE, REMOVING A FRAGMENT FROM THE SOLIDFIED MIXTURE BEARING A PORTION OF THE IDENTIFYING MARKING, MAGNETICALLY DETERMINING THE DIRECTION OF ALIGNMENT OF THE MAGNETIZED PARTICLES HELD IN SAID FRAGMENT OF THE MATERIAL, AND UTILIZING SAID IDENTIFYING MARKING ON SAID CORE AND ON SAID FRAGMENT FOR LOCATING THE DIRECTION OF THE EARTH''S MAGNETIC FIELD WITH RESPECT TO SAID CORE TO DETERMINE THE ORIGINAL ORIENTATION OF THE CORE PRIOR TO REMOVAL FROM THE EARTH.
Claim 2
Independent Claim
205 words
THE METHOD OF UTILIZING THE EARTH''S MAGNETIC FIELD FOR DETERMINING THE ORIENTATION OF A CORE TAKEN IN CORE DRILLING WHICH COMPRISING MIXING A MASS OF FINELY DIVIDED MAGNETIC PARTICLES HAVING HIGH COERCIVE FORCE IN A LIQUID HAVING THE CHARACTERISTIC OF SOLIDIFYING WITHIN A PREDETERMINED PERIOD OF TIME AND HAVING A FURTHER CHARACTERISTIC OF ADHERING SECURELY TO ROCK SURFACES, PLACING A BODY OF THE LIQUID MIXTURE ON THE BOTTOM OF HE HOLE TO BE CORED, WITHDRAWING FROM THE ZONE OF THE BOTTOM OF THE HOLE ALL MAGNETIC MATERIAL OTHER THAN THAT IN SAID MIXTURE WHEREBY THE MAGNETIC PARTICLES ARE ALLOWED TO ALIGN WITH THE EARTH''S MAGNETIC FIELD, ALLOWING THE LIQUID TO SOLIDIFY, CORING THE HOLE, REMOVING THE CORE WITH THE SOLIDFIED MIXTURE ADHERING THERETO, PLACING AN IDENTIFYING MARK ON THE SURFACE OF THE SOLIDFIED MIXTURE, REMOVING A FRAGMENT FROM THE SOLIDFIED MIXTURE BEARING A PORTION OF THE IDENTIFYING MARKING, MAGNETICALLY DETERMINING THE DIRECTION OF ALIGNMENT OF THE MAGNETIZED PARTICLES HELD IN SAID FRAGMENT OF THE MATERIAL, AND UTILIZING SAID IDENTIFYING MARKING ON SAID CORE AND ON SAID FRAGMENT FOR LOCATING THE DIRECTION OF THE EARTH''S MAGNETIC FIELD WITH RESPECT TO SAID CORE TO DETERMINE THE ORIGINAL ORIENTATION OF THE CORE PRIOR TO REMOVAL FROM THE EARTH.
References Cited (Backward Citations)
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US2292838A
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US2565861A
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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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |