US3274820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Test for engine oil contamination
Assignee: Motors Liquidation Co
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Filing: 1963-12-23
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Granted: 1966-09-27
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Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Julius M Komarmy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:59
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A METHOD OT TESTING A LUBRICATING OIL FOR THE PRESSURE OF SOLIDS CONTAMINATION IN EXCESS OF A PREDETERMINED DEGREE OF CONTAMINATION WHICH WARRANTS REPLACEMENT OF SAID OIL, SAID METHOD COMPRISING THE STEPS OF PLACING A DROPLET OF THE CONTAMINATED LUBRICATING OIL TO BE TESTED INTO A LIQUID MEDIUM SAID LIQUID MEDIUM BEING SUBSTANTIALLY IMMISCIBLE WITH SAID OIL AND HAVING A SPECIFIC GRAVITY SUCH THAT SAID DROPLET WILL FLOAT IN SAID LIQUID MEDIUM WHEN THE DEGREE OF SOLIDS CONTAMINATION OF SAID LUBRICATING OIL IS NOT GREATER THAN SAID PREDETERMINED DEGREE OF CONTAMINATION, BUT SAID DROPLET WILL SINK IN SAID LIQUID MEDIUM WHEN THE SOLIDS CONTAMINATION CONTENT OF SAID DROPLET EXCEEDS SAID PREDETERMINED DEGREE OF CONTAMINATION, THE SINKING OF SAID DROPLET IN SAID LIQUID MEDIUM INDICATING THAT SAID OIL IS SUFFICIENTLY CONTAMINATED TO WARRANT REPLACEMENT, AND OBSERVING THE CAPACITY OF SAID OIL TO SINK IN SAID LIQUID MEDIUM.
Claim 2
Independent Claim
146 words
A METHOD OT TESTING A LUBRICATING OIL FOR THE PRESSURE OF SOLIDS CONTAMINATION IN EXCESS OF A PREDETERMINED DEGREE OF CONTAMINATION WHICH WARRANTS REPLACEMENT OF SAID OIL, SAID METHOD COMPRISING THE STEPS OF PLACING A DROPLET OF THE CONTAMINATED LUBRICATING OIL TO BE TESTED INTO A LIQUID MEDIUM SAID LIQUID MEDIUM BEING SUBSTANTIALLY IMMISCIBLE WITH SAID OIL AND HAVING A SPECIFIC GRAVITY SUCH THAT SAID DROPLET WILL FLOAT IN SAID LIQUID MEDIUM WHEN THE DEGREE OF SOLIDS CONTAMINATION OF SAID LUBRICATING OIL IS NOT GREATER THAN SAID PREDETERMINED DEGREE OF CONTAMINATION, BUT SAID DROPLET WILL SINK IN SAID LIQUID MEDIUM WHEN THE SOLIDS CONTAMINATION CONTENT OF SAID DROPLET EXCEEDS SAID PREDETERMINED DEGREE OF CONTAMINATION, THE SINKING OF SAID DROPLET IN SAID LIQUID MEDIUM INDICATING THAT SAID OIL IS SUFFICIENTLY CONTAMINATED TO WARRANT REPLACEMENT, AND OBSERVING THE CAPACITY OF SAID OIL TO SINK IN SAID LIQUID MEDIUM.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |