Patent US4600999A successfully refreshed from Google Patents.
US3882030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-lubricating bearing elements
Assignee: Phillips Petroleum Co
•
Filing: 1974-02-15
•
Granted: 1975-05-06
•
Expires: 1994-02-15
Abstract
Abstract Bearing composition: A. POLYARYLENE SULFIDE B. INORGANIC LUBRICANTS.
Inventors
- 👤 Mahlon E Campbell
- 👤 William D Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:13
CPC Classifications
C; C10; C10M; C10M7/00; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/05; C10M2201/06; C10M2201/062; C10M2201/065; C10M2201/066; C10M2201/10; C10M2201/102; C10M2201/12; C10M2221/00; C10N; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/08; C10N2050/10; F16C2208/00; F16C2208/20; F16C2208/52
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
41 words
A SELF-LUBRICATING POLYMERIC COMPOSITION CONSISTING ESSENTIALLY OF AN ARYLENE SULFIDE POLYMER AND A SOLID LUBRICATING COMPONENT CONSISTING OF A MIXTURE OF MOLYBDENUM DISULFIDE AND ANTIMONY TRIOXIDE IN A WEIGHT RATIO OF MOLYBDENUM DISULFIDE TO ANTIMONY TRIOXIDE RANGING FROM 35:65 TO 75:25
Claim 2
Dependent Claim
41 words
A SELF-LUBRICATING POLYMERIC COMPOSITION CONSISTING ESSENTIALLY OF AN ARYLENE SULFIDE POLYMER AND A SOLID LUBRICATING COMPONENT CONSISTING OF A MIXTURE OF MOLYBDENUM DISULFIDE AND ANTIMONY TRIOXIDE IN A WEIGHT RATIO OF MOLYBDENUM DISULFIDE TO ANTIMONY TRIOXIDE RANGING FROM 35:65 TO 75:25
Claim 3
Dependent Claim
26 words
The composition of claim 1 wherein said solid lubricating component is present in said composition in an approximate amount ranging from 10 to 90 weight percent.
Claim 4
Dependent Claim
12 words
The composition of claim 2 wherein said weight ratio is 55: 45.
Claim 5
Dependent Claim
11 words
The composition of claim 1 wherein said polymer is polyphenylene sulfide.
Claim 6
Independent Claim
159 words
A METHOD OF FORMING A SOLID SELF-LUBRICATING COMPOSITE CONSISTING ESSENTIALLY OF AN ARYLENE SULFIDE POLYMER AND AT LEAST ONE SOLID LUBRICATING COMPONENT SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM DISULFIDE, MOLYBDENUM DISELENIDE, GRAPHITE, ANTIMONY TRIOXIDE, TUNGSTEN DISULFIDE, TUNGSTEN DISELENIDE, AND MIXTURES THEREOF WHICH COMPRISES THE STEPS OF: A. ADMIXING SAID POLYMER AND AT LEAST ONE OF SAID SOLID LUBRICATING COMPONENTS;55 B. HEATING THE RESULTING ADMIXTURE AT A FIRST TEMPERATURE FOR A FIRST INTERVAL; C. THEREAFTER HEATING SAID ADMIXTURE AT A SECOND, HIGHER TEMPERATURE FOR A SECOND INTERVAL; D. THEREAFTER COOLING AND GRINDING SAID THUS-HEATED ADMIXTURE; E. COMPRESSING THE THUS-GROUND ADMIXTURE OF STEP (D) IN A MOLD AT A FIRST PRESSURE; F. HEATING THE THUS-COMPRESSED COMPOSITION AT A THIRD TEMPERATURE FOR A THIRD INTERVAL; G. THEREAFTER, MOLDING THE COMPOSITION OF STEP (F) AT A SECOND PRESSURE; H. COOLING THE THUS-MOLDED COMPOSITION UNDER SAID SECOND PRESSURE TO A FOURTH TEMPERATURE; AND I. THEREAFTER REMOVING FROM THE MOLD THE FINISHED SELFLUBRICATING COMPOSITE.
Claim 7
Independent Claim
159 words
A METHOD OF FORMING A SOLID SELF-LUBRICATING COMPOSITE CONSISTING ESSENTIALLY OF AN ARYLENE SULFIDE POLYMER AND AT LEAST ONE SOLID LUBRICATING COMPONENT SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM DISULFIDE, MOLYBDENUM DISELENIDE, GRAPHITE, ANTIMONY TRIOXIDE, TUNGSTEN DISULFIDE, TUNGSTEN DISELENIDE, AND MIXTURES THEREOF WHICH COMPRISES THE STEPS OF: A. ADMIXING SAID POLYMER AND AT LEAST ONE OF SAID SOLID LUBRICATING COMPONENTS;55 B. HEATING THE RESULTING ADMIXTURE AT A FIRST TEMPERATURE FOR A FIRST INTERVAL; C. THEREAFTER HEATING SAID ADMIXTURE AT A SECOND, HIGHER TEMPERATURE FOR A SECOND INTERVAL; D. THEREAFTER COOLING AND GRINDING SAID THUS-HEATED ADMIXTURE; E. COMPRESSING THE THUS-GROUND ADMIXTURE OF STEP (D) IN A MOLD AT A FIRST PRESSURE; F. HEATING THE THUS-COMPRESSED COMPOSITION AT A THIRD TEMPERATURE FOR A THIRD INTERVAL; G. THEREAFTER, MOLDING THE COMPOSITION OF STEP (F) AT A SECOND PRESSURE; H. COOLING THE THUS-MOLDED COMPOSITION UNDER SAID SECOND PRESSURE TO A FOURTH TEMPERATURE; AND I. THEREAFTER REMOVING FROM THE MOLD THE FINISHED SELFLUBRICATING COMPOSITE.
Claim 8
Dependent Claim
138 words
The method of claim 5 wherein said first temperature is in the range of 25* to 125* F. below the melt point of said polymer and said first interval is in the range of 0.5 to 72 hours; said second temperature is in the range of 0* to 100* F. above the melt point of said polymer and said second interval is in the range of about 10 to about 90 minutes; said first pressure is in the range of 500 to 5,000 psig; said third temperature is in the range of 0*-200* F. above the melt point of said polymer and said third interval is in the range of 1 minute to about 1 hour; said second pressure is in the range of 3,000 to 10,000 psig; and said fourth temperature is not greater than 300* F.
Claim 9
Dependent Claim
26 words
The method of claim 6 wherein said solid lubricating component is present in said composite in an approximate amount ranging from 10 to 90 weight percent.
Claim 10
Dependent Claim
34 words
The method of claim 7 wherein said solid lubricating component is a mixture of molybdenum disulfide and antimony trioxide in a weight ratio of molybdenum disulfide to antimony trioxide ranging from 35:65 to 75:25.
Claim 11
Dependent Claim
11 words
The method of claim 8 wherein said weight ratio is 55:45.
Claim 12
Dependent Claim
11 words
The method of claim 5 wherein said polymer is polyphenylene sulfide.
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) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |