US3143877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant testing apparatus
Assignee: Pure Oil Co
•
Filing: 1960-07-22
•
Granted: 1964-08-11
•
Expires: 1980-07-22
Abstract
No abstract record available.
Inventors
- 👤 Robert G Moyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:41
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/26; G01N33/28; G01N33/2888
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
AN APPARATUS FOR EVALUATING THE COLD-SLUDGING PROPERTIES OF LUBRICANTS COMPRISING A VESSEL INTERNALLY SHAPED TO DEFINE A LUBRICANT CHAMBER AND A GAS CHAMBER COMMUNICATING THEREWITH, INLET AND OUTLET MEANS COMMUNICATING WITH SAID GAS CHAMBER FOR THE CIRCULATING OF A TEST ATMOSPHERE THERETHROUGH, A BODY HAVING A HOLLOW INTERIOR MOVABLY SUPPORTED WITHIN SAID VESSEL FOR MOVEMENT BETWEEN SAID CHAMBERS, MEANS FOR CYCLICALLY MOVING SAID BODY FROM ONE CHAMBER TO THE OTHER, WHEREBY A FILM OF LUBRICANT BEING EVALUATED IS DEPOSITED ON SAID BODY IN SAID LUBRICANT CHAMBER AND THE FILM OF LUBRICANT IS EXPOSED TO THE TEST ATMOSPHERE IN SAID GAS CHAMBER, SAID BODY BEING SUPPORTED SUCH THAT THE FILM OF LUBRICANT ON THE ENTIRE OUTER SURFACE OF SAID BODY IN SAID GAS CHAMBER IS EXPOSED TO THE TEST ATMOSPHERE IN SAID GAS CHAMBER, INLET AND OUTLET MEANS COMMUNICATING WITH THE INTERIOR OF SAID BODY FOR THE CIRCULATION OF COOLING FLUID THERETHROUGH AND MEANS FOR MAINTAINING SAID LUBRICATING CHAMBER AT A TEMPERATURE HIGHER THAN SAID COOLING LIQUID.
Claim 2
Independent Claim
166 words
AN APPARATUS FOR EVALUATING THE COLD-SLUDGING PROPERTIES OF LUBRICANTS COMPRISING A VESSEL INTERNALLY SHAPED TO DEFINE A LUBRICANT CHAMBER AND A GAS CHAMBER COMMUNICATING THEREWITH, INLET AND OUTLET MEANS COMMUNICATING WITH SAID GAS CHAMBER FOR THE CIRCULATING OF A TEST ATMOSPHERE THERETHROUGH, A BODY HAVING A HOLLOW INTERIOR MOVABLY SUPPORTED WITHIN SAID VESSEL FOR MOVEMENT BETWEEN SAID CHAMBERS, MEANS FOR CYCLICALLY MOVING SAID BODY FROM ONE CHAMBER TO THE OTHER, WHEREBY A FILM OF LUBRICANT BEING EVALUATED IS DEPOSITED ON SAID BODY IN SAID LUBRICANT CHAMBER AND THE FILM OF LUBRICANT IS EXPOSED TO THE TEST ATMOSPHERE IN SAID GAS CHAMBER, SAID BODY BEING SUPPORTED SUCH THAT THE FILM OF LUBRICANT ON THE ENTIRE OUTER SURFACE OF SAID BODY IN SAID GAS CHAMBER IS EXPOSED TO THE TEST ATMOSPHERE IN SAID GAS CHAMBER, INLET AND OUTLET MEANS COMMUNICATING WITH THE INTERIOR OF SAID BODY FOR THE CIRCULATION OF COOLING FLUID THERETHROUGH AND MEANS FOR MAINTAINING SAID LUBRICATING CHAMBER AT A TEMPERATURE HIGHER THAN SAID COOLING LIQUID.
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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |