Patent US3246149A successfully refreshed from Google Patents.
US3246149A
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Method for radioactive magnetic flaw detection
Assignee: JOHN D STEELE
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Filing: 1963-04-25
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Granted: 1966-04-12
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Expires: 1983-04-25
Abstract
No abstract record available.
Inventors
- 👤 Kazenas Zenon
- 👤 Richard A Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:54
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/82; G01N27/83; G01N27/84; G21; G21G; G21G4/00; G21G4/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
IN THE METHOD OF TESTING MAGNETIZABLE TEST BODIES FOR FLAWS, THE STEPS OF OBTAINING A PREVIOUSLY PREPARED POWDER ESSENTIALLY CONSISTING OF PARTICLES COMPRISED OF PARAMAGNETIC SUBPARTICLES AND A RESIN ADHERED THERETO, ACTIVATING SAID POWDER BY INTIMATELY MIXING IT IN A DISPERSION OF TRACER ELEMENTS OF THE CLASS CONSISTING OF RADIOACTIVE AND FLUORESCENT COMPOUNDS CAPABLE OF BONDING WITH SAID RESIN, THEREAFTER PASSING A MAGNETIC FLUX THROUGH MAGNETIZABLE TEST BODIES, DISPERSING SAID ACTIVATED POWDER OVER SAID TEST BODIES, AND SCANNING SAID TEST BODIES TO ASCERTAIN THE EXISTENCE OF FLAWS THEREIN THROUGH EMISSIONS FROM SAID POWDERS RETAINED IN THE LOCATION OF FLAWS BY THE ACTION OF THE MAGNETIC FLUX PASSED THROUGH SAID BODY.
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |