US2933449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Functional fluid and lubricant
Assignee: Douglas Aircraft Co Inc
•
Filing: 1956-09-21
•
Granted: 1960-04-19
•
Expires: 1976-09-21
Abstract
No abstract record available.
Inventors
- 👤 Douglas H Moreton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:29
CPC Classifications
C; C10; C10M; C10M3/00; C10M2203/00; C10M2203/10; C10M2203/102; C10M2203/104; C10M2203/106; C10M2203/108; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/04; C10M2205/06; C10M2207/00; C10M2207/04; C10M2207/042; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/102; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/06; C10M2213/00; C10M2213/04; C10M2213/06; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/06; C10M2223/065; C10N; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
116 words
THE FUNCTIONAL FLUID COMPOSITION COMPRISING A MAJOR PROPORTION OF AN ESTER OF THE GROUP CONSISTING OF PHOSPHATES AND PHOSPHONATES HAVING THREE ORGANIC RADICALS OF THE GROUP CONSISTING OF PHENYL, CRESYL, XYLYL, ALKYL WITH FROM 4 TO 10 CARBON ATOMS, AND ALKOXY ALKYL WITH FROM 3 TO 6 CARBON ATOMS AND A RELATIVELY MINOR BUT SUFFICIENT PROPORTION WITHIN THE RANGE OF ABOUT 15 TO 50 PERCENT OF A NORMALLY LIQUID HALOGENATED ALIPHATIC HYDROCARBON LIQUID AT TEMPERATURES WITHIN THE RANGE OF ABOUT -20*C. TO 200*C. EFFECTIVE TO INCREASE THE FIRE-RESISTANCE AND EXTREME PRESSURE PROPERTIES OF THE ESTER, THE RESULTING MIXTURE OF ESTER AND HALOGENATED HYDROCARBON CONTAINING A SUFFICIENT PROPORTION OF POLY ALKYL METHACRYLATE TO INCREASE THE VISCOSITY INDEX.
Claim 2
Dependent Claim
116 words
THE FUNCTIONAL FLUID COMPOSITION COMPRISING A MAJOR PROPORTION OF AN ESTER OF THE GROUP CONSISTING OF PHOSPHATES AND PHOSPHONATES HAVING THREE ORGANIC RADICALS OF THE GROUP CONSISTING OF PHENYL, CRESYL, XYLYL, ALKYL WITH FROM 4 TO 10 CARBON ATOMS, AND ALKOXY ALKYL WITH FROM 3 TO 6 CARBON ATOMS AND A RELATIVELY MINOR BUT SUFFICIENT PROPORTION WITHIN THE RANGE OF ABOUT 15 TO 50 PERCENT OF A NORMALLY LIQUID HALOGENATED ALIPHATIC HYDROCARBON LIQUID AT TEMPERATURES WITHIN THE RANGE OF ABOUT -20*C. TO 200*C. EFFECTIVE TO INCREASE THE FIRE-RESISTANCE AND EXTREME PRESSURE PROPERTIES OF THE ESTER, THE RESULTING MIXTURE OF ESTER AND HALOGENATED HYDROCARBON CONTAINING A SUFFICIENT PROPORTION OF POLY ALKYL METHACRYLATE TO INCREASE THE VISCOSITY INDEX.
Claim 3
Dependent Claim
22 words
THE FIRE-RESISTANT FUNCTIONAL FLUID AND LUBRICANT CONSISTING ESSENTIALLY OF A HOMOGENEOUS MIXTURE OF ABOUT 70 PERCENT OF PHOSPHATE ESTER HAVING THE FORMULAS
Claim 4
Dependent Claim
22 words
THE FIRE-RESISTANT FUNCTIONAL FLUID AND LUBRICANT CONSISTING ESSENTIALLY OF A HOMOGENEOUS MIXTURE OF ABOUT 70 PERCENT OF PHOSPHATE ESTER HAVING THE FORMULAS
References Cited (Backward Citations)
US2245649A
Cited
US2413170A
Cited
US2502392A
Cited
US2442741A
Cited
US2509620A
Cited
US2528348A
Cited
US2583588A
Cited
US2636861A
Cited
US2707176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |