US4392973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for transmitting power by traction utilizing borate esters as traction fluids and a device for using the method
Assignee: BP PLC
•
Filing: 1981-03-18
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Granted: 1983-07-12
•
Expires: 2001-03-18
Abstract
Abstract A method for transmitting power by traction wherein the traction fluid is a borate ester having the general formula: ##STR1## where R 1 is a saturated or unsaturated mono-cyclic group with from 1 to 5 side groups having from 1 to 20 carbon atoms, and R 2 and R 3 are the same or different cyclic groups as defined for R 1 or alkyl groups with from 1 to 20 carbon atoms. A traction drive mechanism utilizing such a borate ester as the traction fluid.
Inventors
- 👤 Anthony J. Moore
- 👤 Howard B. Silver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:34
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/02; C07F5/04; C10; C10M; C10M105/00; C10M105/78; C10M171/00; C10M171/002; C10M2227/00; C10M2227/06; C10M2227/061; C10N; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
98 words
A method of transmitting power by traction wherein a traction fluid transmits the torque between rolling elements of a drive mechanism, comprises introducing between rolling elements of a drive mechanism a traction fluid consisting essentially of a borate ester having the general formula: ##STR5## where R 1 is a saturated or unsaturated mono-cyclic hydrocarbyl group which from 1 to 5 side groups having from 1 to 20 carbon atoms, and R 2 and R 3 are the same or different cyclic hydrocarbyl groups as defined for R 1 or alkyl groups with from 1 to 20 carbon atoms.
Claim 2
Independent Claim
98 words
A method of transmitting power by traction wherein a traction fluid transmits the torque between rolling elements of a drive mechanism, comprises introducing between rolling elements of a drive mechanism a traction fluid consisting essentially of a borate ester having the general formula: ##STR5## where R 1 is a saturated or unsaturated mono-cyclic hydrocarbyl group which from 1 to 5 side groups having from 1 to 20 carbon atoms, and R 2 and R 3 are the same or different cyclic hydrocarbyl groups as defined for R 1 or alkyl groups with from 1 to 20 carbon atoms.
Claim 3
Dependent Claim
46 words
A method of transmitting power by traction as claimed in claim 1 in which at least R 1 and R 2 are saturated cyclic hydrocarbyl groups with from 2 to 5 alkyl side groups each of which side groups has from 1 to 5 carbon atoms.
Claim 4
Dependent Claim
43 words
A method of transmitting power by traction as claimed in claim 2 in which R 3 is also a saturated cyclic hydrocarbyl group with from 2 to 5 alkyl side groups each of which side groups has from 1 to 5 carbon atoms.
Claim 5
Dependent Claim
42 words
A method of transmitting power by traction as claimed in claim 2 in which R 3 is an unsaturated cyclic hydrocarbyl group with from 2 to 5 alkyl side groups each of which side groups has from 1 to 5 carbon atoms.
Claim 6
Dependent Claim
31 words
A method of transmitting power by traction as claimed in claim 1 in which one of R 1 , R 2 or R 3 is a sterically hindered cyclic hydrocarbyl group.
Claim 7
Dependent Claim
18 words
A traction drive mechanism in which the drive is transmitted by the method as claimed in claim 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-11 | 1987-01-10 | 1987-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-11 | 1991-01-10 | 1991-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-11 | 1995-01-10 | 1995-07-12 | $7700.00 | Window Closed / Lapsed |