US2886525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of grease manufacture which comprises shearing the grease mixture at high temperatures
Assignee: Texaco Inc
•
Filing: 1955-06-06
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Granted: 1959-05-12
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Expires: 1975-06-06
Abstract
No abstract record available.
Inventors
- 👤 John P Dilworth
- 👤 Terence B Jordan
- 👤 Bill L Benge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:54
CPC Classifications
C; C10; C10M; C10M5/00; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/282; C10M2207/34; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2050/00; C10N2050/10; C10N2070/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
THE METHOD OF PREPARING A LUBRICATING GREASE WHICH COMPRISES PROVIDING A MOLTEN HOMOGENEOUS MIXTURE OF A SOAP AND AN OLEAGINOUS LIQUID IN GREASE FORMING PROPORTIONS AT AN ELEVATED TEMPERATURE ABOVE THE SOLUTION TEMPERATURE BUT BELOW THE DECOMPOSITION TEMPERATURE OF THE SOAP, MAINTAINING A BODY OF RELATIVELY LARGE VOLUME OF THE SAID MIXTURE WITH AGITATION WHILE COOLING IT AT A RATE BELOW 25* F. PER MINUTE UNTIL A GREASE CONSISTENCY IS OBTAINED, AND SUBJECTING THE SAID MIXURE TO A SHEARING ACTION AT A TEMPERATURE IN THE TRANSITION TEMPERATURE RANGE BY CONTINUOUSLY WITHDRAWING A RECYCLE STREAM OF RELATIVELY SMALL VOLUME FROM THE MAINTAINED BODY OF THE MIXTURE, PASSING IT UNDER PRESSURE THROUGH A RESTRICTED ORIFICE INTO A CONFINED PASSAGEWAY, WITH A PRESSURE DROP OF ABOUT 10-200 POUNDS PER SQUARE INCH ACROSS SAID ORIFICE, AND THEN RETURNING IT TO THE SAID MAINTAINED BODY OF THE MIXTURE AT A BATCH TURNOVER RATE OF AT LEAST ABOUT 0.13 PER MINUTE UNTIL THE VOLUME OF THE RECYCLED MIXTURE IS AT LEAST EQUAL TO THE TOTAL VOLUME OF THE SAID MIXTURE.
Claim 2
Independent Claim
174 words
THE METHOD OF PREPARING A LUBRICATING GREASE WHICH COMPRISES PROVIDING A MOLTEN HOMOGENEOUS MIXTURE OF A SOAP AND AN OLEAGINOUS LIQUID IN GREASE FORMING PROPORTIONS AT AN ELEVATED TEMPERATURE ABOVE THE SOLUTION TEMPERATURE BUT BELOW THE DECOMPOSITION TEMPERATURE OF THE SOAP, MAINTAINING A BODY OF RELATIVELY LARGE VOLUME OF THE SAID MIXTURE WITH AGITATION WHILE COOLING IT AT A RATE BELOW 25* F. PER MINUTE UNTIL A GREASE CONSISTENCY IS OBTAINED, AND SUBJECTING THE SAID MIXURE TO A SHEARING ACTION AT A TEMPERATURE IN THE TRANSITION TEMPERATURE RANGE BY CONTINUOUSLY WITHDRAWING A RECYCLE STREAM OF RELATIVELY SMALL VOLUME FROM THE MAINTAINED BODY OF THE MIXTURE, PASSING IT UNDER PRESSURE THROUGH A RESTRICTED ORIFICE INTO A CONFINED PASSAGEWAY, WITH A PRESSURE DROP OF ABOUT 10-200 POUNDS PER SQUARE INCH ACROSS SAID ORIFICE, AND THEN RETURNING IT TO THE SAID MAINTAINED BODY OF THE MIXTURE AT A BATCH TURNOVER RATE OF AT LEAST ABOUT 0.13 PER MINUTE UNTIL THE VOLUME OF THE RECYCLED MIXTURE IS AT LEAST EQUAL TO THE TOTAL VOLUME OF THE SAID MIXTURE.
References Cited (Backward Citations)
US2646401A
Cited
US2652366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |