US3242338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for wear testing
Assignee: Motors Liquidation Co
•
Filing: 1958-11-03
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Granted: 1966-03-22
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Expires: 1978-11-03
Abstract
No abstract record available.
Inventors
- 👤 John P Danforth
- 👤 Farno L Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:03
CPC Classifications
G; G01; G01N; G01N17/00; G01N3/00; G01N3/56; G01N3/562
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A METHOD OF TESTING THE WEAR CHARACTERISTICS OF A SURFACE COMPRISING THE STEPS OF PLACING AN INSERT IN SAID SURFACE OF A MATERIAL WHICH IS DISTINCT FROM THE MATERIAL OF THE SURFACE AND WHICH CAN BE TRANSFORMED BY RADIATION TO A RADIOISOTOPE HAVING SEPARATELY IDENTIFIABLE RADIATION, SUBJECTING THE SURFACE WITH THE INSERT THEREIN TO WEAR, COLLECTING THE WEAR DEBRIS, IRRADIATING THE WEAR DEBRIS AND THEN MEASURING THE RADIOACTIVITY OF THE IRRADIATED WEAR DEBRIS.
Claim 2
Independent Claim
73 words
A METHOD OF TESTING THE WEAR CHARACTERISTICS OF A SURFACE COMPRISING THE STEPS OF PLACING AN INSERT IN SAID SURFACE OF A MATERIAL WHICH IS DISTINCT FROM THE MATERIAL OF THE SURFACE AND WHICH CAN BE TRANSFORMED BY RADIATION TO A RADIOISOTOPE HAVING SEPARATELY IDENTIFIABLE RADIATION, SUBJECTING THE SURFACE WITH THE INSERT THEREIN TO WEAR, COLLECTING THE WEAR DEBRIS, IRRADIATING THE WEAR DEBRIS AND THEN MEASURING THE RADIOACTIVITY OF THE IRRADIATED WEAR DEBRIS.
References Cited (Backward Citations)
US2315845A
Cited
US2640936A
Cited
US2744199A
Cited
US2723351A
Cited
US2811650A
Cited
US2874303A
Cited
US2751506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |