US3132104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plug valve lubricant and sealant compositions
Assignee: Rockwell Manufacturing Co
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Filing: 1959-04-07
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Granted: 1964-05-05
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Expires: 1979-04-07
Abstract
No abstract record available.
Inventors
- 👤 George F Scherer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:15
CPC Classifications
C; C10; C10M; C10M7/00; C08; C08L; C08L23/00; C08L23/02; C08L23/18; C08L23/20; C08L23/22; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/024; C10M2205/026; C10M2205/14; C10M2207/00; C10M2207/04; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10N; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; C10N2050/00; C10N2050/08; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A HIGH TEMPERATURE PLASTIC LUBRICANT AND SEALING COMPOSITION SUITABLE FOR USE IN LUBRICATED PLUG VALVES CONSISTING ESSENTIALLY OF: (A) A POLYBUTENE HAVING AN APPROXIMATE AVERAG MOLECULAR WEIGHT OF 200-1,500; (B) A POLYMERIC ALKENE COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE AND POLYBUTENE, THE APPROXIMATE AVERAGE MOLECULAR WEIGHT OF SAID POLYETHYLENE, POLYPROPYLENE, AND POLYBUTENE BEING, RESPECTIVELY, 1000-50,000, 200,000-500,000, AND 40,000-500,000, SAID POLYMERIC COMPOUND BEING PRESENT IN SUFFICIENT AMOUNT TO IMPART COMBINED LUBRICATING AND SEALING PROPERTIES UNDER SERVICE CONDITIONS IN A PLUG VALVE AND BEING CAPABLE OF DEPOLYMERIZING AND EVAPORATING AT TEMPERATURES OF 500-1,000*F. WITHOUT LEAVING ANY CARBONACEOUS OR OTHER SOLID RESIDUE; AND (C) A COMPATIBLE, WATER INSOLUBLE PLASTICIZER CAPABLE OF VOLATILIZING WITHOUT LEAVING SOLID RESIDUES AT SAID TEMPERATURES IN AN AMOUNT SUFFICIENT TO IMPART THE VISCOSITY OF A SOFT PLASTIC MASS TO SAID COMPOSITION.
Claim 2
Dependent Claim
135 words
A HIGH TEMPERATURE PLASTIC LUBRICANT AND SEALING COMPOSITION SUITABLE FOR USE IN LUBRICATED PLUG VALVES CONSISTING ESSENTIALLY OF: (A) A POLYBUTENE HAVING AN APPROXIMATE AVERAG MOLECULAR WEIGHT OF 200-1,500; (B) A POLYMERIC ALKENE COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE AND POLYBUTENE, THE APPROXIMATE AVERAGE MOLECULAR WEIGHT OF SAID POLYETHYLENE, POLYPROPYLENE, AND POLYBUTENE BEING, RESPECTIVELY, 1000-50,000, 200,000-500,000, AND 40,000-500,000, SAID POLYMERIC COMPOUND BEING PRESENT IN SUFFICIENT AMOUNT TO IMPART COMBINED LUBRICATING AND SEALING PROPERTIES UNDER SERVICE CONDITIONS IN A PLUG VALVE AND BEING CAPABLE OF DEPOLYMERIZING AND EVAPORATING AT TEMPERATURES OF 500-1,000*F. WITHOUT LEAVING ANY CARBONACEOUS OR OTHER SOLID RESIDUE; AND (C) A COMPATIBLE, WATER INSOLUBLE PLASTICIZER CAPABLE OF VOLATILIZING WITHOUT LEAVING SOLID RESIDUES AT SAID TEMPERATURES IN AN AMOUNT SUFFICIENT TO IMPART THE VISCOSITY OF A SOFT PLASTIC MASS TO SAID COMPOSITION.
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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |