US4046703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traction fluids
Assignee: Sunoco Inc R&M
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Filing: 1975-11-26
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Granted: 1977-09-06
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Expires: 1995-11-26
Abstract
Abstract Perhydrogenated dimers of styrene or a methylated styrene have very high coefficients of traction and are therefore useful as traction fluids. A preferred dimer is 1-cyclohexyl-1,3,3-trimethylhydrindane.
Inventors
- 👤 Irl N. Duling
- 👤 David S. Gates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:40
CPC Classifications
C; C10; C10M; C10M171/00; C10M171/002
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
27 words
Method of increasing the coefficient of traction between two surfaces in tractive relationship which comprises introducing to said surfaces a perhydrogenated dimer of styrene or a methylstyrene.
Claim 2
Dependent Claim
27 words
Method of increasing the coefficient of traction between two surfaces in tractive relationship which comprises introducing to said surfaces a perhydrogenated dimer of styrene or a methylstyrene.
Claim 3
Dependent Claim
13 words
Method according to claim 1 wherein said dimer is a dimer of α-methylstyrene.
Claim 4
Dependent Claim
11 words
Method according to claim 2 wherein said perhydrogenated dimer is 1-cyclohexyl-1,3,3-trimethylhydrindane.
Claim 5
Dependent Claim
13 words
Method according to claim 1 wherein said perhydrogenated dimer contains an antiwear additive.
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) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |