Traction drive fluid
AssigneeFlex-G Pty Ltd
InventorsMark Rutland, Sergei Glavatskih, Shannon Marc Notely
Life of this patent
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Abstract
The invention describes a traction drive fluid that comprising a carrier and a particulate solid. The carrier has a boiling point of greater than at least about 100° C., and a melting point of below about 10° C., both being measured at 1 atm pressure. The particulate solid consists of a plurality of laminae. The laminae are homogeneously distributed through the carrier.
Claims12
A method for transferring torque from a drive element to a driven element in a traction drive, comprising disposing a traction drive fluid between the drive element and the driven element, and rotating the drive element,
- whereby rotation of the drive element causes rotation of the driven element,
- wherein the traction drive fluid comprises:
- a carrier having a boiling point of at least about 100° C. and a melting point of below about 10° C., both being measured at 1 atm pressure;
- and
- a particulate solid consisting of a plurality of laminae,
- wherein
- the laminae comprise particles formed from a number of sheets of lamina material;
- the particles have a mean aspect ratio of at least 20;
- and
- the average number of individual sheets in each particle is from about 1 sheet to about 100 sheets,
- wherein the laminae are homogeneously distributed through said carrier;
- wherein the proportion of the particulate solid in the traction drive fluid is from about 0.05% to about 10% w/w;
- and
- wherein the traction drive fluid has a traction coefficient of greater than about 0.05 at 25° C., measured at 0.8 GPa contact pressure, 100 mms−1 speed, and 10% slide to roll ratio.
A traction drive comprising:
- a drive element;
- a driven element;
- and
- a traction drive fluid,
- wherein the traction drive fluid is disposed between said drive element and said driven element,
- wherein the traction drive fluid comprises:
- a carrier having a boiling point of at least about 100° C. and a melting point of below about 10° C., both being measured at 1 atm pressure;
- and
- a particulate solid consisting of a plurality of laminae,
- wherein
- the laminae comprise particles formed from a number of sheets of lamina material;
- the particles have a mean aspect ratio of at least 20;
- and
- the average number of individual sheets in each particle is from about 1 sheet to about 100 sheets,
- wherein the laminae are homogeneously distributed through said carrier;
- wherein the proportion of the particulate solid in the traction drive fluid is from about 0.05% to about 10% w/w;
- and
- wherein the traction drive fluid has a traction coefficient of greater than about 0.05 at 25° C., measured at 0.8 GPa contact pressure, 100 mms−1 speed, and 10% slide to roll ratio.
Dependencies are inferred from the claim text.