Friction control composition with high and positive friction characteristics
AssigneeWhitmore Manufacturing, LLC
InventorsKELVIN CHIDDICK, ALEJANDRO MEDRANO, RANDALL KRINKER, KYLE WILSON, DAVID BIRDWELL
Life of this patent
Estimating the term…
Abstract
A friction control composition having high and positive frictional properties for sliding steel surfaces includes a water insoluble hydrocarbon that enables a reduced water content, a rheological additive, a freezing point depressant, a friction modifier, and a lubricant.
Claims20
A thixotropic gel or liquid for friction control comprising a friction modifier, water and a matrix of a rheology agent and a water-insoluble component, wherein the rheology agent expands in water to form the thixotropic gel or liquid.
A method of modifying friction of a rail road track from negative to positive comprising:
- mixing a friction control composition by applying shear to thin the thickness or viscosity of the composition, the friction control composition comprising a thixotropic gel or liquid comprising a matrix of a rheology agent and a water insoluble component wherein the rheology agent expands in water to form the thixotropic gel or liquid;
- applying said thinned composition to the top of a rail;
- and
- causing said thinned composition on the top of the rail to settle to a static condition of increased viscosity sufficient to maintain the composition in position on the top of the rail as an undried composition for engagement by a train wheel with shear thinning and distribution of the composition along the rail to change the friction from negative to positive.
A method of modifying friction of a rail road track from negative to positive comprising:
- mixing a friction control composition by applying shear to thin the thickness or viscosity of the composition, the friction control composition comprising a thixotropic gel or liquid which comprises clay having a water insoluble component bound thereto;
- applying said thinned composition to the top of a rail;
- and
- causing said thinned composition on the top of the rail to settle to a static condition of increased viscosity sufficient to maintain the composition in position on the top of the rail as an undried composition for engagement by a train wheel with shear thinning and distribution of the composition along the rail to change the friction from negative to positive.
Dependencies are inferred from the claim text.