US3128381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear measurement without introducting radioactive material into the system
Assignee: General Electric Co
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Filing: 1958-03-31
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Granted: 1964-04-07
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Expires: 1978-03-31
Abstract
No abstract record available.
Inventors
- 👤 David H Morley
- 👤 Warner W Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:24
CPC Classifications
G; G01; G01T; G01T7/00; G01T7/08; G01N; G01N3/00; G01N3/56; G01N3/562
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
IN A METHOD FOR DETERMING THE WEAR OF A MEMBER WITHOUT INTRODUCING RADIOACTIVE MATERIAL INTO THE SYSTEM INCLUDING, THE STEPS COMPRISING SUBJECTING A NONRADIOACTIVE MEMBER TO WEAR IN THE PRESENCE OF A FLUID CAPABLE OF CARRYING THE WEAR PARTICLES FROM SAID MEMBER, IRRADIATING ONLY SAID WEAR PARTICLES TO MAKE SAID WEAR PARTICLES RADIOACTIVE, AND DETERMING THE AMOUNT OF WEAR FROM THE RADIOACTIVITY OF SAID WEAR PARTICLES.
Claim 2
Dependent Claim
66 words
IN A METHOD FOR DETERMING THE WEAR OF A MEMBER WITHOUT INTRODUCING RADIOACTIVE MATERIAL INTO THE SYSTEM INCLUDING, THE STEPS COMPRISING SUBJECTING A NONRADIOACTIVE MEMBER TO WEAR IN THE PRESENCE OF A FLUID CAPABLE OF CARRYING THE WEAR PARTICLES FROM SAID MEMBER, IRRADIATING ONLY SAID WEAR PARTICLES TO MAKE SAID WEAR PARTICLES RADIOACTIVE, AND DETERMING THE AMOUNT OF WEAR FROM THE RADIOACTIVITY OF SAID WEAR PARTICLES.
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) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |